overview - water · web viewthe outlined example below demonstrates the all dates option for...

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[Type text] DRAFT [Type text] USGS Surface Water Toolbox DRAFT MANUAL Contents Overview............................................................. 1 Analysis Menu........................................................ 1 Integrated Design Flow..............................................4 Select Dates Tab..................................................4 N-Day, Trend, Frequency Tab.......................................5 Frequency Report.................................................10 Design Flow Tab..................................................10 Outliers Tab.....................................................11 Duration/Compare Analysis..........................................12 Duration Hydrograph Analysis.......................................19 Overview The Surface Water Toolbox (SWToolbox) contains a set of procedures for statistical analysis of time-series data. The basic use of the software (setting up a project, downloading data, etc.) is covered in the online help system. This supplemental section contains descriptions of the following statistical capabilities to support water-quantity and water-quality modeling: Perform flow-duration analysis using values from a time-series dataset. Compute an n-day high or low annual time series from a daily time series. Perform frequency analysis of any annual time series using the log- Pearson Type III distribution. Perform Kendall Tau analysis for trend in annual time series. Computes duration hydrograph tables and curves. DRAFT 1 DO NOT CITE OR DISTRIBUTE

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Page 1: Overview - Water · Web viewThe outlined example below demonstrates the All Dates option for two time series. In the example below, the Low Flow Condition is selected, and the Year/Season

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USGS Surface Water Toolbox

DRAFT MANUAL

ContentsOverview.....................................................................................................................................................1

Analysis Menu.............................................................................................................................................1

Integrated Design Flow............................................................................................................................4

Select Dates Tab..................................................................................................................................4

N-Day, Trend, Frequency Tab..............................................................................................................5

Frequency Report..............................................................................................................................10

Design Flow Tab.................................................................................................................................10

Outliers Tab.......................................................................................................................................11

Duration/Compare Analysis...................................................................................................................12

Duration Hydrograph Analysis...............................................................................................................19

OverviewThe Surface Water Toolbox (SWToolbox) contains a set of procedures for statistical analysis of time-series data. The basic use of the software (setting up a project, downloading data, etc.) is covered in the online help system. This supplemental section contains descriptions of the following statistical capabilities to support water-quantity and water-quality modeling:

Perform flow-duration analysis using values from a time-series dataset.

Compute an n-day high or low annual time series from a daily time series.

Perform frequency analysis of any annual time series using the log-Pearson Type III distribution.

Perform Kendall Tau analysis for trend in annual time series.

Computes duration hydrograph tables and curves.

Analysis MenuThe SWToolbox analysis menu contains four main options:

Graph – basic plots of time series

Integrated Frequency Analysis - includes Basic, N-Day generation, Trend (simple), and Frequency capabilities as well as Design Flows.

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Page 2: Overview - Water · Web viewThe outlined example below demonstrates the All Dates option for two time series. In the example below, the Low Flow Condition is selected, and the Year/Season

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Duration/Compare - includes duration analysis for single timeseries or statistical comparison of 2 timeseries

Duration Hydrograph - performs duration hydrograph analysis

When any one of the four SWTOOLBOX items is selected, the Select Data form is displayed, allowing the user to filter the available time series based on their attributes.

The top section of this form is titled Select Attribute Values to Filter Available Data and contains pull-down lists with time-series attributes. The number and content of these lists can be managed through the Attributes menu. When the user selects an attribute from any of these lists, the grid beneath is populated with the range of distinct values for that attribute from all available time series. Then, when

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Page 3: Overview - Water · Web viewThe outlined example below demonstrates the All Dates option for two time series. In the example below, the Low Flow Condition is selected, and the Year/Season

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the user selects one or more of these values from the list, the middle section of the form, titled Matching Data, is populated with all available time series that have the selected value for the given attribute.

Finally, the user selects from among the time series listed in the Matching Data section, and these time series are listed in the bottom section of the form, Selected Data. Once time series are selected, clicking on the OK button will close that form and invoke the appropriate form for the selected SWToolbox option.

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Page 4: Overview - Water · Web viewThe outlined example below demonstrates the All Dates option for two time series. In the example below, the Low Flow Condition is selected, and the Year/Season

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Integrated Design FlowThe Integrated Design Flow window consists of four tabs:

- Select Dates- N-Day, Trend, and Frequency Analysis- Design Flow- Outlier Test

These components are discussed in more detail in their respective sections. Each section assumes that the timeseries to analyze have been selected as described earlier.

Select Dates TabWhen the Integrated Frequency Analysis option is selected, the Select Dates tab is initially displayed, where the user is able to specify the Flow Condition (High or Low) and Date/Season options for use in subsequent analysis. While the Flow Condition is only used in N-Day, Trend, and Frequency analysis, the Year/Season Boundaries and Years to Include in Analysis provide great flexibility in defining which portions of the data record to analyze and also apply to the Design Flow analysis. In the Years to Include in Analysis Panel, the user has three options: All, Common or Custom. Once the user chooses Custom, they are able to change the years and the dates in the appropriate text boxes. The outlined example below demonstrates the All Dates option for two time series.

In the example below, the Low Flow Condition is selected, and the Year/Season Boundaries panel is used to specify a year starting on April 1 and extending to March 31 of the following year should be used for the analysis. This is a the climate year that is typically used for low flow analysis. The All option is selected from the Years to Include in Analysis panel to use all available data.

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Page 5: Overview - Water · Web viewThe outlined example below demonstrates the All Dates option for two time series. In the example below, the Low Flow Condition is selected, and the Year/Season

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N-Day, Trend, Frequency TabThe N-Day, Trend, Frequency option computes annual n-day high and low flows for a daily time series. On the N-Day, Trend, Frequency tab, a default list of Number of Days to generate is provided for initial use. This list of N-Day values can be modified by adding (+button) or subtracting (-button) values in the text box below the list. The next time SWToolbox is run, the contents of the list and the items selected will be preserved.

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Page 6: Overview - Water · Web viewThe outlined example below demonstrates the All Dates option for two time series. In the example below, the Low Flow Condition is selected, and the Year/Season

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As mentioned earlier, the Select Dates tab contains the Flow Condition option, which is used to define whether the annual N-Day time series will be for High or Low values.

The N-Day Timeseries List button brings up a window showing the n-day time series that was computed by the software.

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Page 7: Overview - Water · Web viewThe outlined example below demonstrates the All Dates option for two time series. In the example below, the Low Flow Condition is selected, and the Year/Season

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These results may be saved by clicking File:Save and saving to a text file. This file is in a tab-separated form that is readily imported by other spreadsheet programs. Other tabulated results can also be saved in this way. The Analysis menu of this window also provides the ability the Graph the time series.

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Page 8: Overview - Water · Web viewThe outlined example below demonstrates the All Dates option for two time series. In the example below, the Low Flow Condition is selected, and the Year/Season

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Trend ListTrend List is used for annual time series as a preprocessing step to frequency analysis. The following results display Kendall Tau statistic, P-level and median slope of the time series specified earlier.

Screening TestsAn additional set of screening tests are run by pushing the Screening Tests button. The four tests included here are:

- Spearman – an alternative trend test. Results are given as PASS or FAIL, with PASS indicating that there is no apparent trend detected by this test

- PPCC - this test computes a probability plot correlation coefficient for the observed data and the fitted distribution. Results are given as PASS or FAIL, with PASS indicating that there is no strong evidence that the two distributions do not match.

- KSFit – the Kolmogorov-Smirnov test is used assess the fit of the distribution. Results are given as PASS or FAIL, with PASS indicating that there is no strong evidence that the distribution is not a good fit.

- KRatioOutliers – This function indicates data points that may not fit within the selected distribution. Years for which the data point may suspect are listed. This information can be used to subject flagged years to additional scrutiny, but having one or more flagged years (as in the example below) is not necessarily a problem. Data should not be removed simply because they appear on this list.

Frequency Grid and GraphWith this option annual time series may be analyzed with the log-Pearson Type III distribution. Procedures have been included to handle zero values and periods of missing records. Missing record must have annual values of -1 or less. Output is provided in a table and, optionally, the computed annual time-series datasets are added to a WDM file.

The user interface allows selection of any desired N-Day/Recurrence Interval combination(s). As with the Number of Days list, the Recurrence Interval list has an initial set of defaults that may be modified using the text box and + and - buttons below the list. The following form specifies the calculation of the 10 day low mean values for the selected time series at the 2, 5, 10, 50 and 100 year recurrence interval. The Logarithmic option is checked, meaning that the base-10 logarithms of each value in the time series will be taken before fitting the frequency distribution. In other words, the log-Pearson Type III distribution will be used (leaving it unchecked would use the Pearson Type III distribution).

Clicking the Frequency Grid produces the following results form.

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Page 9: Overview - Water · Web viewThe outlined example below demonstrates the All Dates option for two time series. In the example below, the Low Flow Condition is selected, and the Year/Season

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From this screen the File menu contains several output options:

Save Grid - produces tab-delimited file that duplicated the results grid on the form

Save Report - produces traditional USGS Frequency Output report

Save/View N-Day - enables users to save and/or view N-Day annual timeseries, including frequency results as attributes

Export Results - produces tab-delimited file of resulting attributes and values

From the main N-Day, Trend, Frequency tab, the user can click on Frequency Graph. Doing so will produce a graph showing the fitted frequency curve.

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Page 10: Overview - Water · Web viewThe outlined example below demonstrates the All Dates option for two time series. In the example below, the Low Flow Condition is selected, and the Year/Season

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The two checkboxes next to the Frequency Graph button can be used to generate frequency plots for different combinations of chosen N-Day and flow data stations. If only the 'Multiple N-Day Plots' is checked, then there will be as many frequency plots created as selected N-Day(s), each plot contains data from all chosen stations. If only the 'Multiple Station Plots' is checked, then there will be as many frequency plots created as selected stations, each plot contains data curves for all chosen N-Days. If both checkboxes are checked, then there will be a frequency plot created for every combination of chosen N-Day(s) and Stations.

Frequency ReportA formatted text file is produced by pushing the Frequency Report button. This report includes both the frequency results and full information on inputs and settings chosen.

Design Flow TabThe Design Flow Tab calculates biologically-based flows and hydrologically based flows used for design purposes. Default specifications for the flows give quick access to commonly used design flows. The custom options allow the user to specify parameters of these design flows. Note that the hydrologically

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Page 11: Overview - Water · Web viewThe outlined example below demonstrates the All Dates option for two time series. In the example below, the Low Flow Condition is selected, and the Year/Season

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based flows produce the same results as obtained using the N-day, Trend, Frequency tab. However, the richer set of analysis and graphing tools are not available using this workflow. For this reason, use of the n-day, Trend, Frequency tab is recommended for computing these types of flow statistics.

Outliers TabThe outliers tab provides another screening test for 7Q10 values computed from gages that are expected to have similar unit runoff for this low flow value. This tab will be populated with information from stations that were selected in the “Select Data” window at the beginning of the workflow. The test can only be run when five or more stations are selected. A streamgage with “Yes” listed under the “Is Outlier” column is one that is significantly different from the others, suggesting that additional inspection of the information for that gage may be warranted. In many cases, it may be an outlier because there are differences in the upstream watershed that affect low flow hydrology. In other cases,

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Page 12: Overview - Water · Web viewThe outlined example below demonstrates the All Dates option for two time series. In the example below, the Low Flow Condition is selected, and the Year/Season

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the apparent difference may be due to differences in the period of record used. Additional checking of the data for that gage may also be useful to identify the reasons that streamgage was identified as an outlier.

Duration/Compare Analysis

The Duration and Compare features perform traditional flow duration analysis on time series data. While the Duration option performs the analysis on individual time series, the Compare option performs the analysis on 2 related time series, such as simulated and observed or upstream and downstream, to compute error and bias. Due to the intrinsic commonality between duration and compare analyses, they are managed together in terms of dataset selection and report generation.

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Page 13: Overview - Water · Web viewThe outlined example below demonstrates the All Dates option for two time series. In the example below, the Low Flow Condition is selected, and the Year/Season

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The Duration analysis can be done on more than one timeseries whereas the Compare analysis needs exactly two timeseries. If user selected more than two timeseries for the Compare analysis, only the first two of the selected group will be used. Note: for the Compare analysis, the two selected timeseries should have common time duration and time step. This can be accomplished by clicking the Common button on the Select Data form.

Once the desired time series are selected, as discussed in the main USGS Surface Water Statistic section, the main entry form for Duration/Compare analysis will be shown.

In the above form, the Class Limits Generation panel is used to specify conditions for creating class limits to be used for breaking up timeseries data values into appropriate classes or 'bins'. The class limits are used in the text report, but not for generation of the flow duration curve or the flow percentiles. The Number of class limits must be specified by the user before clicking on the Generate, button. The Min and Max limits are optional and they provide a way for the user to restrict range of the class thresholds to be generated. The SWSTAT Default checkbox, when checked, will apply a set of 35 class limits (ranging from 0 to 100000), regardless what the user specifies for the Number, Min, and Max values.

The Class Limits panel displays all available class thresholds. Users can add or remove class thresholds and select some class limits for use in the analysis by highlighting them. If none is selected (highlighted), then all class limits are used in the analysis. The Default, button will create 35 class limits based on the currently selected timeseries' overall minimum and maximum values. Thus, different selection of timeseries will have their own 'default' set of class limits.

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Page 14: Overview - Water · Web viewThe outlined example below demonstrates the All Dates option for two time series. In the example below, the Low Flow Condition is selected, and the Year/Season

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The Choose Analysis panel allows the user to select either Duration or Compare analysis by checking their corresponding radio buttons. Information about the selected timeseries will be displayed in the area directly under the two radio buttons.

Once the final selection of class limits and the choice of an analysis are made, the user can proceed to click the Report button to carry out the analysis and the resulting text report will be displayed in a subsequent popup window. Below is the Compare report using two timeseries (Reach 100 and Reach 131).

Compare Report:

1Note: TS, Time Series

XyZ Correlation Coefficient 0.584XyZ Coefficient of Determination 0.341XyZ Mean Error 1,178.9XyZ Mean Absolute Error 1,179.8XyZ RMS Error 2,348.7XyZ Model Fit Efficiency -208.22

XyZ TS 1 - TENKILL RCH100 FLOWXyZ TS 2 - TENKILL RCH131 FLOW

XyZ Mean Root meanXyZ Lower Number absolute error(1) square error(2) Bias(3)XyZ class of ------------------- ------------------- -------------------XyZ limit cases Average Percent Average Percent Average PercentXyZ --------- --------- --------- --------- --------- --------- --------- ---------XyZ 0.10 0 0.000 0.0 0.000 0.0 0.000 0.0XyZ 0.32 0 0.000 0.0 0.000 0.0 0.000 0.0XyZ 0.46 0 0.000 0.0 0.000 0.0 0.000 0.0XyZ 0.68 0 0.000 0.0 0.000 0.0 0.000 0.0XyZ 1.00 0 0.000 0.0 0.000 0.0 0.000 0.0XyZ 1.50 0 0.000 0.0 0.000 0.0 0.000 0.0XyZ 2.20 0 0.000 0.0 0.000 0.0 0.000 0.0XyZ 3.20 0 0.000 0.0 0.000 0.0 0.000 0.0XyZ 4.60 0 0.000 0.0 0.000 0.0 0.000 0.0XyZ 6.80 0 0.000 0.0 0.000 0.0 0.000 0.0XyZ 10.00 0 0.000 0.0 0.000 0.0 0.000 0.0XyZ 15.00 0 0.000 0.0 0.000 0.0 0.000 0.0

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XyZ 22.00 0 0.000 0.0 0.000 0.0 0.000 0.0XyZ 32.00 0 0.000 0.0 0.000 0.0 0.000 0.0XyZ 46.00 0 0.000 0.0 0.000 0.0 0.000 0.0XyZ 68.00 8 92.377 98.5 92.469 98.5 -92.377 -98.5XyZ 100.00 274 126.770 98.9 127.430 98.9 -126.770 -98.9XyZ 150.00 449 183.260 98.1 184.460 98.2 -183.260 -98.1XyZ 220.00 734 263.320 97.5 264.950 97.6 -263.320 -97.5XyZ 320.00 930 374.670 96.0 378.140 96.3 -373.670 -95.7XyZ 460.00 1209 544.950 96.1 549.640 96.4 -544.820 -96.1XyZ 680.00 1078 782.160 95.0 789.890 95.3 -779.370 -94.6XyZ 1000.00 861 1143.000 94.5 1155.800 94.9 -1140.700 -94.3XyZ 1500.00 527 1704.400 94.4 1719.700 94.7 -1704.400 -94.4XyZ 2200.00 344 2485.100 94.2 2512.000 94.7 -2485.100 -94.2XyZ 3200.00 223 3621.500 95.5 3645.500 95.6 -3621.500 -95.5XyZ 4600.00 155 5266.500 95.6 5309.000 95.7 -5266.500 -95.6XyZ 6800.00 80 8019.000 95.2 8080.400 95.4 -8019.000 -95.2XyZ 10000.00 46 11560.000 95.1 11647.000 95.2-11560.000 -95.1XyZ 15000.00 12 16290.000 96.4 16351.000 96.4-16290.000 -96.4XyZ 22000.00 8 23878.000 96.8 24030.000 96.9-23878.000 -96.8XyZ 46000.00 2 52594.000 95.4 52630.000 95.4-52594.000 -95.4XyZ --------- --------- --------- --------- --------- --------- --------- ---------XyZ 6940 1179.800 95.8 2348.700 96.1 1178.900 -95.7

Standard error of estimate = 2,031.6XyZ = square root((n/n-1)*((tot.col.5)**2-(tot.col.7)**2))(1) Average = sum(|TS2-TS1|/n)XyZ Percent = 100 * (sum(|TS2-TS1|/TS1))/n for all TS1 > 0(2) Average = square root(sum((TS2-TS1)**2)/n)XyZ Percent = 100 * square root(sum(((TS2-TS1)/TS1)**2)/n) for all TS1 > 0(3) Average = sum(TS2-TS1)/nXyZ Percent = 100 * sum(((TS2-TS1)/TS1)/n) for all TS1 > 0

1Table 2XyZ TS 1 - TENKILL RCH100 FLOWXyZ TS 2 - TENKILL RCH131 FLOW

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Page 16: Overview - Water · Web viewThe outlined example below demonstrates the All Dates option for two time series. In the example below, the Low Flow Condition is selected, and the Year/Season

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XyZ Cases equal or exceeding lowerXyZ limit & less then upper limit Percent casesXyZ ---------------------------- equal or Average of casesXyZ Lower Cases Percent exceeding limit within class limitsXyZ class --------- ------------------- ------------------- -------------------XyZ limit TS1 TS2 TS1 TS2 TS1 TS2 TS1 TS2XyZ --------- ---- ---- --------- --------- --------- --------- --------- ---------XyZ 0.10 0 22 0.00 0.32 100.00 100.00 0.00 0.26XyZ 0.32 0 44 0.00 0.63 100.00 99.68 0.00 0.40XyZ 0.46 0 63 0.00 0.91 100.00 99.05 0.00 0.57XyZ 0.68 0 128 0.00 1.84 100.00 98.14 0.00 0.83XyZ 1.00 0 200 0.00 2.88 100.00 96.30 0.00 1.26XyZ 1.50 0 227 0.00 3.27 100.00 93.41 0.00 1.83XyZ 2.20 0 256 0.00 3.69 100.00 90.14 0.00 2.69XyZ 3.20 0 332 0.00 4.78 100.00 86.46 0.00 3.85XyZ 4.60 0 452 0.00 6.51 100.00 81.67 0.00 5.68XyZ 6.80 0 557 0.00 8.03 100.00 75.16 0.00 8.46XyZ 10.00 0 769 0.00 11.08 100.00 67.13 0.00 12.36XyZ 15.00 0 752 0.00 10.84 100.00 56.05 0.00 18.26XyZ 22.00 0 692 0.00 9.97 100.00 45.22 0.00 26.68XyZ 32.00 0 650 0.00 9.37 100.00 35.24 0.00 38.27XyZ 46.00 0 546 0.00 7.87 100.00 25.88 0.00 55.83XyZ 68.00 8 381 0.12 5.49 100.00 18.01 93.78 82.78XyZ 100.00 274 302 3.95 4.35 99.88 12.52 128.28 121.06XyZ 150.00 449 187 6.47 2.69 95.94 8.17 186.77 180.96XyZ 220.00 734 134 10.58 1.93 89.47 5.48 270.15 262.58XyZ 320.00 930 102 13.40 1.47 78.89 3.54 390.38 388.13XyZ 460.00 1209 61 17.42 0.88 65.49 2.07 566.95 556.57XyZ 680.00 1078 38 15.53 0.55 48.07 1.20 824.05 807.58XyZ 1000.00 861 29 12.41 0.42 32.54 0.65 1210.90 1192.40XyZ 1500.00 527 9 7.59 0.13 20.13 0.23 1805.20 1799.30

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Page 17: Overview - Water · Web viewThe outlined example below demonstrates the All Dates option for two time series. In the example below, the Low Flow Condition is selected, and the Year/Season

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XyZ 2200.00 344 6 4.96 0.09 12.54 0.10 2637.90 2557.00XyZ 3200.00 223 1 3.21 0.01 7.58 0.01 3793.70 3350.00XyZ 4600.00 155 0 2.23 0.00 4.37 0.00 5504.90 0.00XyZ 6800.00 80 0 1.15 0.00 2.13 0.00 8423.30 0.00XyZ 10000.00 46 0 0.66 0.00 0.98 0.00 12167.00 0.00XyZ 15000.00 12 0 0.17 0.00 0.32 0.00 16915.00 0.00XyZ 22000.00 8 0 0.12 0.00 0.14 0.00 24656.00 0.00XyZ 46000.00 2 0 0.03 0.00 0.03 0.00 55115.00 0.00XyZ --------- ---- ---- --------- --------- ---------- --------- --------- ---------XyZ 6940 6940 100.00 100.00 1239.10 60.22

1XyZ TS 1 - TENKILL RCH100 FLOWXyZ TS 2 - TENKILL RCH131 FLOW

XyZ Lower Number of occurrences between indicated deviationsXyZ class -------------------------------------------------------------XyZ limit -60% -30% -10% 0% 10% 30% 60%XyZ --------- -------------------------------------------------------------XyZ 0.10 0 0 0 0 0 0 0 0XyZ 0.32 0 0 0 0 0 0 0 0XyZ 0.46 0 0 0 0 0 0 0 0XyZ 0.68 0 0 0 0 0 0 0 0XyZ 1.00 0 0 0 0 0 0 0 0XyZ 1.50 0 0 0 0 0 0 0 0XyZ 2.20 0 0 0 0 0 0 0 0XyZ 3.20 0 0 0 0 0 0 0 0XyZ 4.60 0 0 0 0 0 0 0 0XyZ 6.80 0 0 0 0 0 0 0 0XyZ 10.00 0 0 0 0 0 0 0 0XyZ 15.00 0 0 0 0 0 0 0 0XyZ 22.00 0 0 0 0 0 0 0 0XyZ 32.00 0 0 0 0 0 0 0 0XyZ 46.00 0 0 0 0 0 0 0 0XyZ 68.00 8 0 0 0 0 0 0 0XyZ 100.00 274 0 0 0 0 0 0 0XyZ 150.00 447 2 0 0 0 0 0 0XyZ 220.00 733 1 0 0 0 0 0 0XyZ 320.00 917 5 3 1 2 0 2 0XyZ 460.00 1197 8 2 1 0 1 0 0XyZ 680.00 1061 9 3 0 0 2 3 0XyZ 1000.00 846 9 3 0 1 1 1 0XyZ 1500.00 522 5 0 0 0 0 0 0XyZ 2200.00 339 2 2 1 0 0 0 0XyZ 3200.00 222 1 0 0 0 0 0 0XyZ 4600.00 155 0 0 0 0 0 0 0XyZ 6800.00 80 0 0 0 0 0 0 0XyZ 10000.00 46 0 0 0 0 0 0 0XyZ 15000.00 12 0 0 0 0 0 0 0

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Page 18: Overview - Water · Web viewThe outlined example below demonstrates the All Dates option for two time series. In the example below, the Low Flow Condition is selected, and the Year/Season

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XyZ 22000.00 8 0 0 0 0 0 0 0XyZ 46000.00 2 0 0 0 0 0 0 0XyZ --------- -------------------------------------------------------------XyZ 6869 42 13 3 3 4 6 0

1XyZ Percent time value was exceeded

XyZ Flow FlowXyZ TS1 TS2 %ExceedanceXyZ --------- ---------- -----------XyZ 115.6 0.5 99XyZ 128.4 0.7 98XyZ 161.2 1.2 95XyZ 215.0 2.2 90XyZ 264.4 3.6 85XyZ 309.3 5.1 80XyZ 361.7 6.9 75XyZ 412.0 9.0 70XyZ 465.7 10.9 65XyZ 526.5 13.1 60XyZ 587.7 15.7 55XyZ 653.4 18.4 50XyZ 731.1 22.1 45XyZ 825.5 26.8 40XyZ 933.5 32.1 35XyZ 1071.8 38.7 30XyZ 1243.4 47.8 25XyZ 1508.2 61.2 20XyZ 1899.6 83.4 15XyZ 2616.1 123.3 10XyZ 4208.6 236.2 5XyZ 6881.8 474.6 2XyZ 9905.0 762.3 1

The user can also click the Graph button to produce a duration plot for the selected timeseries data.

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Page 19: Overview - Water · Web viewThe outlined example below demonstrates the All Dates option for two time series. In the example below, the Low Flow Condition is selected, and the Year/Season

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Duration Hydrograph AnalysisThis analysis will compute duration hydrograph tables and curves for the selected timeseries. It is based on the USGS K956 WATSTORE program for the same analysis. The duration hydrograph displays the percentage of time that a particular flow value has been exceeded on a given day over the period of record. The duration hydrograph curves are plotted to show range of exceedance levels for each timestep. Data are analyzed at a daily time step. Although it was originally developed for streamflow data, any timeseries may be analyzed.

Once the desired time series are selected, as discussed in the main USGS Surface Water Statistic section, the main entry form for Duration Hydrograph analysis will be shown.

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Page 20: Overview - Water · Web viewThe outlined example below demonstrates the All Dates option for two time series. In the example below, the Low Flow Condition is selected, and the Year/Season

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The Select Percent Exceedance list box contains the percentiles for which exceedance values will be extracted from the selected timeseries for each day of the records. The user can add or remove percent exceedance levels but they have to be within the range of 0 and 1. If none are selected, then all percents are used for the analysis. Click the Report button will start the analysis. Multiple timeseries data can be analyzed and text reports will be displayed in a popup window with one timeseries' result following another. Click the Graph button to generate percent exceedance hydrograph for the selected percentile levels for each of the selected timeseries as shown below:

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Click the Report button to generate a report that tabulates the information shown in the graph.

1XyZ Duration hydrograph forXyZ Station idXyZ For period 1983/12/31 24:00 to 2002/12/31 24:00

XyZ Num PercentileXyZ Jan yrs Max 0.1 0.2 0.3 0.5 0.7 0.8 0.9 Min

XyZ 1 19 11199. 2892. 1426. 1291. 826. 656. 587. 385. 124.XyZ 2 19 7989. 2438. 1388. 1228. 856. 722. 567. 373. 125.XyZ 3 19 5342. 2154. 1619. 1238. 983. 765. 660. 453. 141.XyZ 4 19 11160. 2903. 2285. 1424. 887. 735. 675. 620. 193.XyZ 5 19 23890. 2848. 1828. 1270. 862. 704. 646. 586. 221.XyZ 6 19 15397. 2272. 1763. 1170. 773. 650. 616. 564. 216.

DRAFT 21 DO NOT CITE OR DISTRIBUTE

Page 22: Overview - Water · Web viewThe outlined example below demonstrates the All Dates option for two time series. In the example below, the Low Flow Condition is selected, and the Year/Season

[Type text] DRAFT [Type text]

XyZ 7 19 10656. 2046. 1926. 1037. 716. 651. 596. 526. 200.XyZ 8 19 10539. 2004. 1642. 943. 686. 618. 580. 468. 185.XyZ 9 19 9863. 1809. 1641. 988. 746. 631. 567. 478. 174.XyZ 10 19 5898. 3071. 2597. 944. 716. 602. 543. 458. 167.XyZ 11 19 4208. 3116. 2627. 904. 682. 576. 553. 439. 161.XyZ 12 19 3141. 2725. 1847. 866. 664. 600. 532. 422. 156.XyZ 13 19 2549. 2451. 1902. 1327. 652. 602. 530. 405. 152.XyZ 14 19 11223. 2039. 1616. 1062. 621. 559. 508. 390. 148.XyZ 15 19 9420. 1873. 1437. 1094. 590. 569. 486. 376. 145.XyZ 16 19 6080. 1729. 1317. 979. 569. 550. 470. 378. 321.XyZ 17 19 4767. 2933. 1302. 1239. 552. 541. 531. 472. 436.XyZ 18 19 3933. 2710. 1508. 1249. 785. 527. 510. 469. 423.XyZ 19 19 5531. 3591. 2033. 1250. 715. 503. 490. 457. 453.XyZ 20 19 9680. 3393. 2202. 1356. 597. 482. 471. 456. 454.XyZ 21 19 6868. 3443. 1984. 1294. 567. 470. 461. 436. 425.XyZ 22 19 4458. 2521. 1426. 1141. 542. 447. 437. 419. 399.XyZ 23 19 2932. 1943. 1186. 1043. 600. 433. 422. 401. 379.XyZ 24 19 2030. 1598. 1130. 974. 583. 514. 406. 382. 363.XyZ 25 19 1518. 1390. 1082. 920. 608. 512. 400. 372. 348.XyZ 26 19 2461. 1404. 1262. 1138. 760. 492. 387. 360. 334.XyZ 27 19 2849. 1859. 1153. 1050. 709. 486. 467. 349. 322.XyZ 28 19 2816. 1714. 1204. 1058. 797. 545. 453. 365. 310.XyZ 29 19 4853. 1438. 1145. 1066. 763. 538. 430. 361. 299.XyZ 30 19 4238. 1884. 1123. 963. 731. 524. 419. 344. 289.XyZ 31 19 2936. 1893. 1104. 927. 701. 582. 401. 328. 279.

XyZ Mean 6788. 2325. 1603. 1111. 704. 574. 510. 429. 269.1XyZ Duration hydrograph forXyZ Station idXyZ For period 1983/12/31 24:00 to 2002/12/31 24:00

XyZ Num Percentile

DRAFT 22 DO NOT CITE OR DISTRIBUTE

Page 23: Overview - Water · Web viewThe outlined example below demonstrates the All Dates option for two time series. In the example below, the Low Flow Condition is selected, and the Year/Season

[Type text] DRAFT [Type text]

XyZ Feb yrs Max 0.1 0.2 0.3 0.5 0.7 0.8 0.9 Min

XyZ 1 19 3881. 1873. 1170. 995. 697. 578. 454. 313. 271.XyZ 2 19 3193. 1570. 1215. 939. 797. 518. 452. 300. 292.XyZ 3 19 2804. 1837. 1007. 929. 766. 478. 394. 333. 292.XyZ 4 19 2065. 1386. 845. 816. 736. 448. 416. 377. 341.XyZ 5 19 1591. 1047. 836. 814. 704. 457. 425. 364. 328.XyZ 6 19 2402. 1283. 893. 859. 659. 486. 392. 347. 316.XyZ 7 19 9356. 1119. 823. 789. 611. 466. 388. 331. 305.XyZ 8 19 6881. 1002. 791. 718. 656. 543. 373. 316. 294.XyZ 9 19 3945. 932. 753. 713. 663. 519. 375. 303. 295.XyZ 10 19 2563. 1073. 873. 681. 627. 494. 412. 294. 288.XyZ 11 19 1870. 1107. 880. 828. 598. 496. 403. 289. 278.XyZ 12 19 2486. 1853. 993. 810. 568. 455. 377. 363. 270.XyZ 13 19 2474. 1646. 1617. 889. 551. 529. 390. 353. 262.XyZ 14 19 4901. 1895. 1310. 966. 557. 494. 363. 335. 255.XyZ 15 19 9700. 4725. 2180. 1100. 528. 466. 337. 320. 248.XyZ 16 19 8647. 6635. 3536. 958. 502. 443. 323. 306. 244.XyZ 17 19 5824. 5027. 2671. 950. 484. 436. 311. 307. 294.XyZ 18 19 4159. 3551. 2313. 1087. 554. 457. 302. 294. 283.XyZ 19 19 2864. 2451. 1698. 953. 653. 475. 293. 286. 283.XyZ 20 19 2113. 1804. 1382. 1123. 822. 607. 467. 283. 274.XyZ 21 19 12620. 1630. 1161. 1087. 731. 572. 462. 275. 265.XyZ 22 19 9809. 1999. 1444. 962. 692. 538. 441. 265. 256.XyZ 23 19 7047. 4442. 2071. 907. 642. 514. 427. 255. 247.XyZ 24 19 14960. 3454. 1769. 837. 601. 507. 409. 245. 237.XyZ 25 19 15750. 3587. 1972. 1462. 578. 466. 393. 231. 231.XyZ 26 19 8485. 4337. 2581. 1270. 559. 454. 432. 375. 228.XyZ 27 19 5419. 3211. 2868. 1269. 951. 458. 413. 359. 236.XyZ 28 19 3858. 2863. 2752. 1211. 895. 436. 392. 340. 232.

DRAFT 23 DO NOT CITE OR DISTRIBUTE

Page 24: Overview - Water · Web viewThe outlined example below demonstrates the All Dates option for two time series. In the example below, the Low Flow Condition is selected, and the Year/Season

[Type text] DRAFT [Type text]

XyZ Mean 5774. 2476. 1586. 961. 657. 493. 394. 313. 273.XyZ 29 5 922. 922. 852. 417. 417. 229. 229. 229. 229.1XyZ Duration hydrograph forXyZ Station idXyZ For period 1983/12/31 24:00 to 2002/12/31 24:00

XyZ Num PercentileXyZ Mar yrs Max 0.1 0.2 0.3 0.5 0.7 0.8 0.9 Min

XyZ 1 19 5568. 2115. 1826. 1739. 692. 491. 395. 325. 226.XyZ 2 19 4582. 2235. 2050. 1545. 723. 580. 468. 313. 219.XyZ 3 19 6326. 2774. 1832. 1595. 952. 588. 459. 304. 210.XyZ 4 19 6019. 2724. 1646. 1360. 1000. 569. 446. 295. 201.XyZ 5 19 4198. 2603. 1744. 1515. 1145. 527. 428. 286. 194.XyZ 6 19 5570. 2753. 1415. 1290. 1004. 520. 410. 276. 188.XyZ 7 19 4589. 2482. 1969. 1282. 982. 601. 376. 266. 181.XyZ 8 19 4349. 3292. 3202. 1477. 948. 728. 358. 254. 174.XyZ 9 19 7991. 3494. 2379. 2177. 1078. 650. 443. 244. 168.XyZ 10 19 6042. 2591. 2073. 1458. 949. 582. 533. 268. 163.XyZ 11 19 4187. 2652. 1432. 1074. 857. 544. 482. 311. 158.XyZ 12 19 9792. 1899. 1382. 1237. 846. 676. 487. 299. 153.XyZ 13 19 6652. 2392. 1868. 1106. 727. 657. 469. 283. 147.XyZ 14 19 7989. 4045. 1525. 1023. 721. 647. 447. 267. 143.XyZ 15 19 14238. 3849. 1285. 1075. 633. 603. 425. 267. 143.XyZ 16 19 8800. 3082. 1488. 1067. 707. 570. 429. 272. 159.XyZ 17 19 5546. 2606. 2021. 1119. 854. 551. 408. 296. 176.XyZ 18 19 7855. 3916. 1718. 1402. 854. 566. 525. 299. 194.XyZ 19 19 5167. 3952. 1496. 1445. 861. 687. 515. 318. 221.XyZ 20 19 6963. 4432. 2581. 2117. 823. 690. 481. 307. 228.XyZ 21 19 5244. 2577. 2330. 1877. 830. 564. 451. 294. 221.XyZ 22 19 3615. 2074. 1649. 1536. 813. 691. 466. 294. 213.XyZ 23 19 2521. 2247. 1620. 1292. 742. 656. 412. 308. 205.

DRAFT 24 DO NOT CITE OR DISTRIBUTE

Page 25: Overview - Water · Web viewThe outlined example below demonstrates the All Dates option for two time series. In the example below, the Low Flow Condition is selected, and the Year/Season

[Type text] DRAFT [Type text]

XyZ 24 19 2439. 1960. 1655. 1363. 721. 658. 394. 306. 199.XyZ 25 19 2870. 2183. 1539. 1151. 831. 629. 373. 294. 212.XyZ 26 19 3114. 2217. 1382. 1309. 849. 636. 461. 281. 237.XyZ 27 19 2812. 1736. 1523. 1290. 771. 607. 568. 275. 268.XyZ 28 19 2753. 1920. 1722. 1304. 799. 581. 569. 286. 249.XyZ 29 19 9905. 2994. 1892. 1464. 967. 558. 508. 270. 238.XyZ 30 19 12965. 3279. 2453. 1259. 1031. 548. 511. 258. 235.XyZ 31 19 10559. 3415. 1960. 1378. 958. 532. 491. 247. 232.

XyZ Mean 6198. 2820. 1855. 1411. 874. 610. 465. 293. 206.1XyZ Duration hydrograph forXyZ Station idXyZ For period 1983/12/31 24:00 to 2002/12/31 24:00

XyZ Num PercentileXyZ Apr yrs Max 0.1 0.2 0.3 0.5 0.7 0.8 0.9 Min

XyZ 1 19 6177. 4585. 1668. 1304. 868. 509. 445. 245. 238.XyZ 2 19 7913. 2933. 1679. 1065. 778. 481. 411. 275. 234.XyZ 3 19 6572. 2660. 1705. 1262. 748. 499. 460. 326. 222.XyZ 4 19 5805. 3131. 1999. 1840. 760. 706. 447. 310. 213.XyZ 5 19 5432. 5014. 1983. 1563. 856. 669. 423. 297. 202.XyZ 6 19 5934. 4445. 1588. 1393. 760. 595. 403. 289. 193.XyZ 7 19 4290. 2952. 1390. 1245. 826. 538. 387. 278. 191.XyZ 8 19 10841. 2499. 1992. 1392. 923. 586. 374. 268. 192.XyZ 9 19 9540. 5559. 1936. 1224. 851. 558. 365. 254. 187.XyZ 10 19 5113. 3297. 1687. 1140. 925. 535. 356. 324. 178.XyZ 11 19 5677. 3329. 2216. 1763. 939. 564. 511. 338. 168.XyZ 12 19 8098. 2348. 2190. 1480. 844. 731. 519. 334. 160.XyZ 13 19 4750. 2368. 1762. 1295. 1029. 743. 582. 476. 156.XyZ 14 19 11830. 2909. 2002. 1407. 1211. 728. 499. 421. 153.XyZ 15 19 10261. 4163. 1756. 1343. 1108. 703. 537. 429. 149.XyZ 16 19 6380. 2564. 1454. 1209. 968. 664. 468. 414. 152.

DRAFT 25 DO NOT CITE OR DISTRIBUTE

Page 26: Overview - Water · Web viewThe outlined example below demonstrates the All Dates option for two time series. In the example below, the Low Flow Condition is selected, and the Year/Season

[Type text] DRAFT [Type text]

XyZ 17 19 18312. 1834. 1237. 1120. 881. 623. 436. 396. 267.XyZ 18 19 16619. 1811. 1343. 1140. 895. 651. 427. 374. 367.XyZ 19 19 6737. 2042. 1250. 1050. 928. 627. 439. 353. 347.XyZ 20 19 13640. 2358. 2250. 1013. 848. 596. 431. 363. 330.XyZ 21 19 9792. 3043. 1764. 1059. 756. 563. 447. 353. 313.XyZ 22 19 6115. 2502. 1525. 1291. 750. 642. 540. 374. 337.XyZ 23 19 5692. 4182. 1820. 1157. 796. 617. 514. 349. 344.XyZ 24 19 7956. 3376. 1374. 1027. 739. 591. 484. 366. 329.XyZ 25 19 4007. 3120. 2206. 1110. 624. 561. 463. 347. 317.XyZ 26 19 3123. 2594. 1995. 949. 589. 532. 462. 316. 305.XyZ 27 19 4422. 2487. 1385. 963. 751. 527. 468. 297. 295.XyZ 28 19 3708. 2141. 1090. 1036. 768. 531. 444. 286. 280.XyZ 29 19 2763. 2090. 1213. 1136. 799. 562. 459. 274. 265.XyZ 30 19 9550. 3311. 1542. 1318. 753. 513. 441. 263. 254.

XyZ Mean 7568. 3055. 1700. 1243. 842. 598. 455. 333. 245.1XyZ Duration hydrograph forXyZ Station idXyZ For period 1983/12/31 24:00 to 2002/12/31 24:00

XyZ Num PercentileXyZ May yrs Max 0.1 0.2 0.3 0.5 0.7 0.8 0.9 Min

XyZ 1 19 10915. 3250. 1390. 1216. 665. 475. 423. 259. 244.XyZ 2 19 4639. 3239. 1499. 1019. 640. 530. 403. 260. 231.XyZ 3 19 22945. 2902. 2576. 1240. 684. 497. 395. 256. 224.XyZ 4 19 22350. 3377. 2304. 1821. 668. 470. 403. 281. 218.XyZ 5 19 10981. 2642. 2086. 1362. 685. 503. 392. 315. 216.XyZ 6 19 6425. 2434. 1515. 1090. 689. 516. 383. 296. 226.XyZ 7 19 4840. 2717. 1215. 962. 752. 472. 363. 283. 269.XyZ 8 19 9176. 3353. 1553. 905. 696. 511. 356. 275. 254.XyZ 9 19 19637. 3241. 1337. 855. 681. 579. 359. 319. 268.XyZ 10 19 20032. 2403. 1472. 899. 696. 561. 366. 294. 258.

DRAFT 26 DO NOT CITE OR DISTRIBUTE

Page 27: Overview - Water · Web viewThe outlined example below demonstrates the All Dates option for two time series. In the example below, the Low Flow Condition is selected, and the Year/Season

[Type text] DRAFT [Type text]

XyZ 11 19 11723. 3725. 1759. 1132. 676. 548. 352. 324. 302.XyZ 12 19 6859. 3471. 2602. 1945. 654. 560. 486. 306. 289.XyZ 13 19 4635. 2984. 2387. 2120. 755. 532. 452. 291. 280.XyZ 14 19 3822. 3013. 1875. 1596. 844. 469. 457. 293. 273.XyZ 15 19 2773. 2302. 1636. 1400. 754. 444. 397. 306. 259.XyZ 16 19 2840. 1774. 1240. 1113. 691. 451. 409. 295. 244.XyZ 17 19 4552. 2042. 1496. 871. 657. 440. 384. 283. 235.XyZ 18 19 5935. 2662. 1499. 1117. 717. 579. 363. 271. 227.XyZ 19 19 3611. 2179. 1801. 1661. 646. 526. 373. 255. 220.XyZ 20 19 3204. 1891. 1546. 1288. 663. 552. 390. 242. 220.XyZ 21 19 4922. 1838. 1533. 1211. 794. 523. 386. 232. 228.XyZ 22 19 7799. 3338. 1895. 1058. 691. 499. 390. 326. 302.XyZ 23 19 7917. 3857. 1792. 1089. 703. 525. 418. 366. 292.XyZ 24 19 6016. 2189. 1407. 1112. 758. 506. 458. 349. 285.XyZ 25 19 3874. 1641. 1512. 1466. 1110. 724. 475. 443. 409.XyZ 26 19 4814. 2698. 1647. 1545. 1034. 664. 509. 447. 408.XyZ 27 19 5262. 2698. 2275. 1106. 931. 682. 593. 446. 358.XyZ 28 19 9315. 3659. 2019. 1640. 875. 754. 547. 412. 325.XyZ 29 19 8373. 2961. 1762. 1426. 855. 654. 565. 357. 305.XyZ 30 19 5972. 1702. 1577. 1368. 1000. 671. 500. 394. 289.XyZ 31 19 5436. 2050. 1726. 1300. 1136. 701. 586. 406. 270.

XyZ Mean 8116. 2717. 1740. 1288. 768. 552. 430. 319. 272.1XyZ Duration hydrograph forXyZ Station idXyZ For period 1983/12/31 24:00 to 2002/12/31 24:00

XyZ Num PercentileXyZ Jun yrs Max 0.1 0.2 0.3 0.5 0.7 0.8 0.9 Min

XyZ 1 19 3694. 2200. 1682. 988. 906. 778. 565. 409. 254.XyZ 2 19 2495. 1919. 1582. 1270. 826. 711. 543. 421. 296.XyZ 3 19 6168. 3427. 1435. 1196. 784. 660. 549. 456. 442.

DRAFT 27 DO NOT CITE OR DISTRIBUTE

Page 28: Overview - Water · Web viewThe outlined example below demonstrates the All Dates option for two time series. In the example below, the Low Flow Condition is selected, and the Year/Season

[Type text] DRAFT [Type text]

XyZ 4 19 6626. 3607. 2360. 1598. 830. 623. 557. 415. 404.XyZ 5 19 22704. 2360. 1611. 1353. 860. 674. 537. 413. 364.XyZ 6 19 13601. 4823. 1799. 1194. 829. 650. 516. 344. 339.XyZ 7 19 11568. 3742. 1451. 1091. 768. 594. 494. 312. 310.XyZ 8 19 4944. 2634. 1300. 1130. 731. 557. 498. 293. 292.XyZ 9 19 6725. 3235. 1888. 1120. 699. 610. 528. 288. 279.XyZ 10 19 5587. 2763. 1980. 1049. 707. 599. 495. 336. 290.XyZ 11 19 7948. 2524. 2114. 1201. 805. 572. 461. 334. 269.XyZ 12 19 5960. 3055. 1814. 1604. 756. 535. 511. 335. 246.XyZ 13 19 9026. 3571. 1471. 1424. 811. 603. 478. 318. 227.XyZ 14 19 9192. 5475. 1608. 1193. 797. 539. 454. 291. 219.XyZ 15 19 6245. 4470. 3490. 1415. 847. 512. 427. 277. 221.XyZ 16 19 4740. 3533. 2861. 1505. 820. 484. 404. 267. 229.XyZ 17 19 11423. 2471. 1883. 1297. 867. 460. 397. 266. 222.XyZ 18 19 9358. 1862. 1424. 1160. 823. 430. 380. 287. 210.XyZ 19 19 4082. 1507. 1061. 1001. 800. 441. 417. 298. 195.XyZ 20 19 5196. 2399. 1295. 953. 794. 441. 403. 274. 185.XyZ 21 19 8770. 1871. 1382. 1056. 784. 651. 431. 258. 178.XyZ 22 19 9197. 2649. 1338. 1119. 831. 538. 408. 251. 172.XyZ 23 19 5894. 3058. 1568. 1030. 753. 680. 408. 273. 165.XyZ 24 19 10264. 3616. 1224. 946. 801. 533. 370. 268. 155.XyZ 25 19 5128. 3369. 1705. 967. 720. 437. 351. 250. 146.XyZ 26 19 4461. 3590. 1351. 880. 689. 387. 322. 233. 144.XyZ 27 19 3961. 2114. 1548. 921. 631. 366. 308. 222. 148.XyZ 28 19 4819. 1568. 1508. 830. 621. 353. 302. 214. 142.XyZ 29 19 8484. 1639. 1085. 851. 617. 334. 304. 203. 142.XyZ 30 19 9747. 1349. 889. 744. 612. 396. 313. 192. 147.

XyZ Mean 7600. 2880. 1657. 1136. 771. 538. 438. 300. 234.1XyZ Duration hydrograph forXyZ Station id

DRAFT 28 DO NOT CITE OR DISTRIBUTE

Page 29: Overview - Water · Web viewThe outlined example below demonstrates the All Dates option for two time series. In the example below, the Low Flow Condition is selected, and the Year/Season

[Type text] DRAFT [Type text]

XyZ For period 1983/12/31 24:00 to 2002/12/31 24:00

XyZ Num PercentileXyZ Jul yrs Max 0.1 0.2 0.3 0.5 0.7 0.8 0.9 Min

XyZ 1 19 16222. 1252. 759. 707. 583. 485. 293. 185. 172.XyZ 2 19 5977. 1111. 682. 668. 558. 493. 271. 178. 168.XyZ 3 19 3460. 969. 713. 627. 518. 473. 272. 180. 160.XyZ 4 19 2371. 901. 806. 579. 502. 426. 276. 185. 153.XyZ 5 19 1798. 1351. 964. 646. 488. 438. 281. 182. 145.XyZ 6 19 1719. 1356. 781. 611. 479. 414. 264. 171. 143.XyZ 7 19 1295. 1177. 703. 579. 457. 386. 299. 161. 137.XyZ 8 19 1167. 885. 676. 631. 456. 401. 351. 153. 134.XyZ 9 19 1092. 733. 642. 560. 435. 381. 323. 146. 133.XyZ 10 19 1059. 639. 610. 472. 403. 368. 308. 138. 129.XyZ 11 19 1826. 662. 577. 442. 369. 344. 323. 131. 127.XyZ 12 19 1569. 933. 581. 512. 392. 357. 311. 136. 128.XyZ 13 19 2148. 1172. 607. 571. 449. 378. 300. 146. 128.XyZ 14 19 2126. 992. 855. 532. 464. 366. 287. 146. 123.XyZ 15 19 2098. 825. 646. 507. 447. 355. 274. 139. 120.XyZ 16 19 1897. 773. 603. 500. 411. 335. 267. 129. 118.XyZ 17 19 1625. 774. 676. 517. 396. 314. 261. 120. 116.XyZ 18 19 2050. 915. 715. 465. 399. 317. 253. 127. 114.XyZ 19 19 1421. 699. 669. 428. 361. 300. 240. 198. 113.XyZ 20 19 1466. 670. 542. 450. 333. 285. 264. 188. 115.XyZ 21 19 3852. 641. 566. 409. 312. 282. 246. 178. 110.XyZ 22 19 1787. 694. 610. 380. 311. 271. 250. 170. 107.XyZ 23 19 1388. 663. 564. 382. 317. 271. 248. 163. 104.XyZ 24 19 1237. 636. 512. 357. 303. 266. 239. 153. 102.XyZ 25 19 1206. 574. 527. 507. 286. 266. 232. 143. 104.XyZ 26 19 3559. 938. 598. 503. 303. 265. 224. 136. 110.XyZ 27 19 11402. 1658. 815. 487. 285. 252. 215. 139. 111.

DRAFT 29 DO NOT CITE OR DISTRIBUTE

Page 30: Overview - Water · Web viewThe outlined example below demonstrates the All Dates option for two time series. In the example below, the Low Flow Condition is selected, and the Year/Season

[Type text] DRAFT [Type text]

XyZ 28 19 9127. 1327. 772. 423. 272. 239. 205. 171. 112.XyZ 29 19 3396. 1047. 567. 400. 280. 232. 210. 169. 112.XyZ 30 19 2481. 1093. 766. 412. 324. 229. 217. 155. 109.XyZ 31 19 4894. 1042. 849. 392. 304. 221. 209. 143. 105.

XyZ Mean 3184. 939. 676. 505. 394. 336. 265. 157. 125.1XyZ Duration hydrograph forXyZ Station idXyZ For period 1983/12/31 24:00 to 2002/12/31 24:00

XyZ Num PercentileXyZ Aug yrs Max 0.1 0.2 0.3 0.5 0.7 0.8 0.9 Min

XyZ 1 19 2697. 871. 604. 375. 289. 215. 198. 133. 102.XyZ 2 19 1674. 774. 528. 370. 267. 218. 190. 128. 99.XyZ 3 19 1816. 706. 489. 340. 255. 219. 186. 125. 107.XyZ 4 19 3057. 648. 465. 292. 245. 212. 188. 122. 112.XyZ 5 19 3764. 613. 452. 378. 239. 225. 196. 137. 106.XyZ 6 19 7663. 1968. 534. 404. 239. 218. 188. 153. 103.XyZ 7 19 4451. 2049. 550. 379. 226. 214. 178. 136. 109.XyZ 8 19 2674. 1580. 526. 364. 220. 198. 171. 135. 120.XyZ 9 19 1855. 1298. 488. 371. 253. 208. 189. 155. 137.XyZ 10 19 2887. 938. 442. 396. 230. 207. 181. 150. 149.XyZ 11 19 2325. 743. 413. 339. 274. 207. 182. 136. 132.XyZ 12 19 1576. 629. 391. 332. 251. 213. 198. 142. 122.XyZ 13 19 1236. 558. 415. 373. 254. 228. 200. 159. 143.XyZ 14 19 4345. 877. 403. 359. 266. 223. 187. 158. 142.XyZ 15 19 3226. 792. 474. 351. 238. 215. 178. 151. 146.XyZ 16 19 1673. 820. 605. 349. 233. 219. 169. 145. 134.XyZ 17 19 4445. 847. 552. 354. 235. 205. 177. 156. 128.XyZ 18 19 5059. 734. 555. 340. 264. 218. 191. 148. 136.XyZ 19 19 2860. 758. 579. 390. 297. 209. 188. 148. 141.XyZ 20 19 3439. 1324. 689. 490. 295. 197. 189. 148. 136.

DRAFT 30 DO NOT CITE OR DISTRIBUTE

Page 31: Overview - Water · Web viewThe outlined example below demonstrates the All Dates option for two time series. In the example below, the Low Flow Condition is selected, and the Year/Season

[Type text] DRAFT [Type text]

XyZ 21 19 2516. 1256. 588. 434. 281. 188. 183. 139. 131.XyZ 22 19 1395. 985. 540. 397. 274. 179. 179. 143. 131.XyZ 23 19 916. 787. 512. 372. 259. 179. 169. 139. 126.XyZ 24 19 753. 636. 611. 358. 243. 192. 173. 134. 120.XyZ 25 19 677. 579. 546. 448. 236. 212. 173. 129. 114.XyZ 26 19 656. 581. 526. 435. 240. 193. 172. 131. 109.XyZ 27 19 587. 536. 508. 453. 299. 197. 174. 128. 106.XyZ 28 19 643. 511. 461. 420. 258. 216. 162. 129. 128.XyZ 29 19 541. 499. 439. 388. 232. 208. 168. 129. 125.XyZ 30 19 505. 458. 402. 362. 226. 198. 169. 126. 121.XyZ 31 19 500. 454. 402. 349. 284. 190. 166. 119. 117.

XyZ Mean 2336. 865. 506. 379. 255. 207. 181. 139. 124.1XyZ Duration hydrograph forXyZ Station idXyZ For period 1983/12/31 24:00 to 2002/12/31 24:00

XyZ Num PercentileXyZ Sep yrs Max 0.1 0.2 0.3 0.5 0.7 0.8 0.9 Min

XyZ 1 19 548. 437. 365. 336. 248. 185. 148. 114. 113.XyZ 2 19 505. 436. 346. 317. 249. 185. 139. 109. 108.XyZ 3 19 459. 441. 369. 316. 230. 182. 152. 106. 106.XyZ 4 19 1059. 426. 414. 314. 238. 173. 156. 109. 104.XyZ 5 19 772. 409. 365. 306. 230. 184. 149. 109. 102.XyZ 6 19 413. 401. 345. 293. 223. 177. 141. 106. 99.XyZ 7 19 417. 365. 288. 272. 213. 171. 134. 103. 96.XyZ 8 19 762. 374. 346. 285. 242. 204. 129. 104. 94.XyZ 9 19 787. 479. 376. 286. 219. 200. 149. 115. 92.XyZ 10 19 1164. 449. 391. 353. 210. 199. 159. 114. 90.XyZ 11 19 1863. 482. 393. 360. 210. 191. 162. 116. 89.XyZ 12 19 1307. 618. 420. 333. 210. 174. 153. 119. 88.XyZ 13 19 1534. 619. 476. 405. 211. 176. 146. 135. 118.

DRAFT 31 DO NOT CITE OR DISTRIBUTE

Page 32: Overview - Water · Web viewThe outlined example below demonstrates the All Dates option for two time series. In the example below, the Low Flow Condition is selected, and the Year/Season

[Type text] DRAFT [Type text]

XyZ 14 19 14013. 2154. 709. 475. 296. 172. 152. 125. 114.XyZ 15 19 14072. 2408. 1074. 400. 296. 181. 151. 124. 113.XyZ 16 19 6360. 3606. 1635. 1002. 349. 185. 163. 121. 112.XyZ 17 19 3866. 2851. 1313. 966. 367. 260. 148. 120. 110.XyZ 18 19 7262. 2401. 1020. 765. 347. 280. 140. 119. 116.XyZ 19 19 4804. 1696. 788. 610. 441. 265. 214. 119. 116.XyZ 20 19 2689. 1293. 690. 635. 378. 261. 243. 129. 112.XyZ 21 19 6635. 1298. 1001. 555. 365. 281. 238. 124. 109.XyZ 22 19 8183. 1046. 842. 555. 392. 233. 223. 121. 117.XyZ 23 19 3855. 888. 749. 612. 402. 270. 211. 179. 135.XyZ 24 19 2082. 1588. 829. 626. 395. 320. 273. 188. 182.XyZ 25 19 3998. 1274. 862. 540. 408. 332. 258. 200. 170.XyZ 26 19 11217. 1000. 841. 639. 467. 353. 295. 239. 163.XyZ 27 19 24776. 858. 712. 501. 417. 338. 278. 220. 159.XyZ 28 19 9795. 1020. 779. 541. 363. 343. 265. 201. 155.XyZ 29 19 7867. 1632. 719. 477. 363. 304. 236. 201. 150.XyZ 30 19 56489. 1175. 670. 535. 374. 272. 223. 216. 145.

XyZ Mean 6652. 1137. 671. 487. 312. 235. 188. 140. 119.1XyZ Duration hydrograph forXyZ Station idXyZ For period 1983/12/31 24:00 to 2002/12/31 24:00

XyZ Num PercentileXyZ Oct yrs Max 0.1 0.2 0.3 0.5 0.7 0.8 0.9 Min

XyZ 1 19 53736. 1020. 640. 505. 376. 280. 230. 207. 141.XyZ 2 19 25280. 1426. 580. 478. 365. 288. 221. 201. 137.XyZ 3 19 12719. 1131. 581. 457. 343. 276. 206. 195. 134.XyZ 4 19 7799. 968. 714. 439. 322. 265. 191. 190. 131.XyZ 5 19 13689. 1220. 728. 536. 327. 298. 187. 185. 128.XyZ 6 19 11415. 1042. 579. 520. 352. 282. 229. 181. 128.XyZ 7 19 4545. 927. 533. 509. 392. 310. 254. 177. 127.

DRAFT 32 DO NOT CITE OR DISTRIBUTE

Page 33: Overview - Water · Web viewThe outlined example below demonstrates the All Dates option for two time series. In the example below, the Low Flow Condition is selected, and the Year/Season

[Type text] DRAFT [Type text]

XyZ 8 19 2450. 1757. 869. 533. 370. 288. 233. 180. 125.XyZ 9 19 7562. 1896. 932. 611. 340. 271. 224. 178. 127.XyZ 10 19 5520. 1427. 907. 708. 337. 260. 218. 176. 131.XyZ 11 19 4425. 1647. 844. 729. 351. 295. 211. 169. 134.XyZ 12 19 5249. 2246. 810. 675. 334. 290. 205. 160. 136.XyZ 13 19 4184. 2545. 781. 684. 404. 284. 197. 156. 131.XyZ 14 19 4449. 3094. 1207. 610. 395. 272. 189. 152. 124.XyZ 15 19 3353. 2498. 1004. 566. 380. 260. 199. 149. 119.XyZ 16 19 2181. 1649. 1555. 883. 455. 251. 207. 145. 116.XyZ 17 19 2130. 1479. 1271. 812. 442. 249. 201. 142. 115.XyZ 18 19 2795. 1373. 1074. 796. 427. 242. 195. 138. 114.XyZ 19 19 4654. 1366. 937. 754. 417. 237. 189. 135. 118.XyZ 20 19 8517. 1783. 992. 717. 415. 232. 181. 134. 133.XyZ 21 19 13617. 1966. 923. 794. 453. 226. 177. 145. 131.XyZ 22 19 6873. 1393. 756. 744. 457. 239. 175. 144. 129.XyZ 23 19 4226. 1553. 1113. 690. 428. 233. 184. 139. 126.XyZ 24 19 2755. 1286. 1075. 701. 437. 309. 227. 137. 121.XyZ 25 19 3184. 1532. 1082. 860. 618. 283. 229. 165. 119.XyZ 26 19 6866. 1695. 1126. 796. 589. 295. 210. 188. 118.XyZ 27 19 7234. 1786. 1135. 903. 553. 332. 202. 186. 116.XyZ 28 19 5734. 1667. 940. 849. 539. 327. 219. 178. 115.XyZ 29 19 4337. 1495. 903. 789. 518. 341. 282. 179. 112.XyZ 30 19 3238. 1163. 1124. 702. 497. 393. 267. 173. 132.XyZ 31 19 2803. 1046. 978. 645. 493. 349. 308. 235. 167.

XyZ Mean 7985. 1583. 926. 677. 423. 283. 214. 168. 127.1XyZ Duration hydrograph forXyZ Station idXyZ For period 1983/12/31 24:00 to 2002/12/31 24:00

XyZ Num PercentileXyZ Nov yrs Max 0.1 0.2 0.3 0.5 0.7 0.8 0.9 Min

DRAFT 33 DO NOT CITE OR DISTRIBUTE

Page 34: Overview - Water · Web viewThe outlined example below demonstrates the All Dates option for two time series. In the example below, the Low Flow Condition is selected, and the Year/Season

[Type text] DRAFT [Type text]

XyZ 1 19 4904. 2072. 986. 708. 522. 461. 294. 275. 164.XyZ 2 19 4569. 2687. 1927. 890. 495. 442. 335. 271. 162.XyZ 3 19 3154. 2081. 1453. 809. 545. 396. 349. 253. 158.XyZ 4 19 9691. 1590. 1358. 1000. 527. 367. 336. 242. 153.XyZ 5 19 24082. 1678. 1221. 938. 703. 355. 304. 233. 148.XyZ 6 19 15760. 1384. 1183. 829. 658. 469. 285. 222. 142.XyZ 7 19 13045. 2334. 1213. 729. 644. 446. 306. 212. 137.XyZ 8 19 13760. 2019. 1106. 1021. 611. 460. 304. 205. 135.XyZ 9 19 7609. 1765. 1089. 973. 591. 480. 289. 197. 137.XyZ 10 19 5746. 1734. 1529. 928. 568. 466. 278. 188. 153.XyZ 11 19 3902. 2894. 1421. 931. 593. 442. 268. 182. 173.XyZ 12 19 8428. 2113. 1027. 893. 590. 583. 420. 225. 177.XyZ 13 19 6654. 1801. 1344. 1135. 816. 540. 401. 219. 172.XyZ 14 19 13035. 2251. 1765. 918. 742. 509. 366. 214. 167.XyZ 15 19 10918. 2763. 2050. 1097. 799. 496. 336. 209. 164.XyZ 16 19 6800. 3419. 2466. 1961. 948. 475. 316. 203. 159.XyZ 17 19 7587. 5913. 2158. 1513. 979. 458. 301. 196. 154.XyZ 18 19 14556. 5335. 3788. 1747. 722. 453. 290. 190. 150.XyZ 19 19 31217. 4691. 3251. 1593. 847. 594. 279. 184. 147.XyZ 20 19 16663. 4178. 2465. 1926. 901. 572. 269. 178. 145.XyZ 21 19 7872. 3367. 2874. 1878. 881. 552. 261. 171. 140.XyZ 22 19 8949. 3602. 2248. 1551. 801. 695. 253. 177. 140.XyZ 23 19 9214. 2598. 1616. 1397. 773. 666. 345. 186. 149.XyZ 24 19 5729. 2636. 1647. 1247. 750. 640. 422. 181. 157.XyZ 25 19 10711. 4164. 1678. 1476. 777. 609. 344. 177. 157.XyZ 26 19 9927. 3051. 2061. 1478. 923. 598. 293. 174. 155.XyZ 27 19 6823. 2800. 2421. 2053. 1165. 573. 281. 171. 152.XyZ 28 19 4936. 3359. 1918. 1569. 1097. 616. 285. 167. 146.XyZ 29 19 4215. 2875. 1987. 1668. 1033. 682. 266. 162. 141.XyZ 30 19 5145. 2031. 1789. 1595. 981. 859. 250. 158. 138.

DRAFT 34 DO NOT CITE OR DISTRIBUTE

Page 35: Overview - Water · Web viewThe outlined example below demonstrates the All Dates option for two time series. In the example below, the Low Flow Condition is selected, and the Year/Season

[Type text] DRAFT [Type text]

XyZ Mean 9853. 2840. 1835. 1282. 766. 532. 311. 201. 152.1XyZ Duration hydrograph forXyZ Station idXyZ For period 1983/12/31 24:00 to 2002/12/31 24:00

XyZ Num PercentileXyZ Dec yrs Max 0.1 0.2 0.3 0.5 0.7 0.8 0.9 Min

XyZ 1 19 5551. 2968. 1822. 1481. 1063. 792. 240. 154. 135.XyZ 2 19 4416. 2357. 1614. 1323. 1160. 742. 234. 150. 133.XyZ 3 19 3499. 3080. 1830. 1258. 978. 702. 394. 151. 130.XyZ 4 19 3106. 2530. 2315. 1232. 995. 675. 597. 225. 128.XyZ 5 19 3925. 2211. 1883. 1210. 961. 648. 582. 217. 126.XyZ 6 19 2395. 1891. 1629. 1256. 933. 635. 560. 209. 123.XyZ 7 19 2064. 1540. 1469. 1117. 834. 644. 598. 200. 122.XyZ 8 19 2100. 1374. 1305. 1045. 965. 665. 621. 230. 132.XyZ 9 19 3729. 1992. 1368. 1266. 952. 720. 596. 277. 140.XyZ 10 19 4666. 3385. 1568. 1246. 900. 688. 590. 263. 141.XyZ 11 19 5875. 2497. 1487. 1131. 855. 637. 566. 252. 140.XyZ 12 19 5300. 2457. 1741. 1095. 819. 676. 598. 247. 136.XyZ 13 19 10617. 3954. 2318. 1445. 959. 763. 569. 293. 133.XyZ 14 19 11024. 3170. 1995. 1883. 1070. 746. 543. 279. 130.XyZ 15 19 14842. 3047. 2098. 1600. 1087. 731. 522. 268. 127.XyZ 16 19 15968. 3553. 1989. 1526. 1031. 720. 503. 263. 124.XyZ 17 19 15118. 2796. 2264. 1551. 1201. 930. 636. 365. 122.XyZ 18 19 11137. 3713. 2174. 1535. 1104. 878. 614. 354. 120.XyZ 19 19 6858. 4879. 2577. 1416. 1010. 907. 586. 382. 117.XyZ 20 19 14355. 3606. 3236. 1860. 963. 857. 562. 365. 115.XyZ 21 19 11497. 7189. 2815. 1555. 1048. 835. 542. 340. 113.XyZ 22 19 13589. 5465. 2346. 1633. 1008. 850. 763. 321. 111.XyZ 23 19 7535. 3817. 1903. 1538. 972. 815. 715. 321. 109.XyZ 24 19 5036. 3433. 1879. 1225. 938. 784. 679. 492. 107.

DRAFT 35 DO NOT CITE OR DISTRIBUTE

Page 36: Overview - Water · Web viewThe outlined example below demonstrates the All Dates option for two time series. In the example below, the Low Flow Condition is selected, and the Year/Season

[Type text] DRAFT [Type text]

XyZ 25 19 9376. 3575. 1839. 1244. 859. 784. 679. 477. 106.XyZ 26 19 17502. 2659. 2008. 1297. 776. 727. 658. 462. 105.XyZ 27 19 13543. 2125. 1704. 1231. 910. 712. 701. 448. 104.XyZ 28 19 9884. 2378. 1763. 1244. 914. 684. 678. 435. 103.XyZ 29 19 6656. 2275. 1673. 1502. 838. 659. 653. 422. 104.XyZ 30 19 6468. 2506. 1725. 1395. 806. 651. 630. 409. 104.XyZ 31 19 6088. 3648. 1752. 1360. 858. 643. 608. 397. 115.

XyZ Mean 8185. 3099. 1938. 1377. 960. 739. 581. 312. 121.

DRAFT 36 DO NOT CITE OR DISTRIBUTE