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Smith Branch Monitoring Sites Monitoring Data Summary for
March 28th, 2018 – May 9th, 2018 Data Gaps
• There were no interruptions in the SMIA dataset. The SMIB station experienced some periods of fouling turbidity which were removed from the dataset.
• At the SMIB station, the specific conductivity sensor and temperature sensor became unsubmerged. During periods where the specific conductivity and temperature sensors were unsubmerged, DO and pH values, which are temperature dependent, were also removed from the dataset.
SCDHEC Standards
• The SMIA station recorded a minimum pH value of 5.9. These low pH values occurred during the storm event on April 23rd-24th.
• The SMIB station did not record any pH readings outside of the acceptable SCDHEC range of 6 to 8.5.
• The SMIA and SMIB stations recorded average DO concentrations of 7.3 mg/L and 8.5 mg/L, respectively, which are well above the SCDHEC daily average standard of 5 mg/L.
• The minimum DO concentrations were 4.7 mg/L and 6.8 mg/L at the SMIA and SMIB stations, respectively, which are both above the SCDHEC minimum level of 4 mg/L.
Storm Events
• The SMIA station recorded six storms (at least 0.1 inches) in this monitoring period that resulted in 5.3 inches of precipitation. The SMIB station recorded seven storms (at least 0.1 inches) in this monitoring period that resulted in 5.1 inches of precipitation.
• The Smith Branch monitoring stations both recorded typical water quality responses to the storm events observed during this monitoring period.
• The maximum antecedent dry time since the last significant precipitation event (at least 0.1 inch) was approximately 8.2 days prior to the April 7th storm event at both Smith Branch monitoring stations.
Potential Illicit Discharges and Abnormal Events
• While the sonde was deployed, an abnormal event was observed on March 29th in the turbidity data at SMIA and SMIB.
• Two periods of slightly elevated specific conductivity levels were observed at SMIA on April 5th-7th and 14th.
Flow Measurements
• No flow measurements were taken in this watershed during this monitoring period. Notes
• Minor gaps observed in the pressure transducer dataset during this monitoring period will be replaced with secondary onsite stage data within the continuous dataset. The pressure transducer data gaps are being further investigated.
Continuous Water Quality
Monitoring Periodic Report
Smith Branch A (March 28, 2018 -- May 9, 2018)
MINIMUM
OBSERVED
MAXIMUM
OBSERVED
MEDIAN
OBSERVED
MEAN
OBSERVED
STANDARD
DEVIATION
STREAM NAME: STAGE (FT): 1.8 5.2 1.9 1.9 0.3
LOCATION:
ADDRESS:
COORDINATES:
TMDL/IMPAIRMENT:
NEIGHBORING
LANDUSE:
SPATIAL LOCATION:
MAX. DAILY RAINFALL: 1.6 inches
TOTAL RAINFALL
(FOR PERIOD):5.3 inches
34.027289,-81.04265
Fecal Coliform
Residential and commercial
Most upstream site
PARAMETER
Smith Branch
Earlewood Park
DESCRIPTION
1111 Parkside Dr
Columbia, SC 29201
CONTINUOUS
WATER QUALITY
PARAMETERS:
SUMMARY STATISTICS
TEMPERATURE
(°F):53 73 63 63 4
TURBIDITY (NTU): 3 608
pH: 5.9 7.0
30
0.9
0.1
0.034
8 16
6.7 6.7
TOTAL NO. STORMS
OVER 0.1 INCH:6 0.160 0.155
7.3 7.3DISSOLVED
OXYGEN (mg/L):4.7 9.4
SPECIFIC
CONDUCTIVITY
(mS/cm):
0.026 0.231
3
5
7
9
11
3/28 3/30 4/1 4/3 4/5 4/7 4/9 4/11 4/13 4/15 4/17 4/19 4/21 4/23 4/25 4/27 4/29 5/1 5/3 5/5 5/7 5/9
mg/
L
Dissolved Oxygen 4 mg/L (SCDHEC Low Standard)
0
200
400
600
800
3/28 3/30 4/1 4/3 4/5 4/7 4/9 4/11 4/13 4/15 4/17 4/19 4/21 4/23 4/25 4/27 4/29 5/1 5/3 5/5 5/7 5/9
NTU
Turbidity
0.0
0.5
1.0
1.5
2.01
3
5
7
9
3/28 3/30 4/1 4/3 4/5 4/7 4/9 4/11 4/13 4/15 4/17 4/19 4/21 4/23 4/25 4/27 4/29 5/1 5/3 5/5 5/7 5/9
Rai
nfa
ll, in
Stag
e, f
t
Stage & Rainfall
50
60
70
80
3/28 3/30 4/1 4/3 4/5 4/7 4/9 4/11 4/13 4/15 4/17 4/19 4/21 4/23 4/25 4/27 4/29 5/1 5/3 5/5 5/7 5/9
°F
Water Temp
5.8
6.2
6.6
7.0
7.4
3/28 3/30 4/1 4/3 4/5 4/7 4/9 4/11 4/13 4/15 4/17 4/19 4/21 4/23 4/25 4/27 4/29 5/1 5/3 5/5 5/7 5/9
pH
pH
0.000.060.120.180.240.30
3/28 3/30 4/1 4/3 4/5 4/7 4/9 4/11 4/13 4/15 4/17 4/19 4/21 4/23 4/25 4/27 4/29 5/1 5/3 5/5 5/7 5/9
mS/
cm
Specific Conductivity
SCDHEC in-stream standard: Daily average not less than 5 mg/L with a low of 4 mg/L
Note: Data gaps appear when the sonde is removed for calibration or when the flow depth is below the sensors
REPORT GENERATED ON 6/6/2018
Continuous Water Quality
Monitoring Periodic Report
Smith Branch A (March 28, 2018 -- May 9, 2018)
Explanation of Statistics:
MINIMUM
OBSERVED
MAXIMUM
OBSERVED
MEDIAN OBSERVED
MEAN OBSERVED
STANDARD
DEVIATION
Grab Sample Data:
Time Result Time Result Time Result Time Result
Escherichia coli
(MPN/100mL)
Total Suspended
Solids (mg/L)
Total Phosphorus
(mg/L)
Total Nitrogen
(mg/L)Note:
The minimum of the values recorded by the datasonde in 15 minute intervals.
The maximum of the values recorded by the datasonde in 15 minute intervals.
The median of all the values recorded by the datasonde in 15 minute intervals.
The average of all the values recorded by the datasonde in 15 minute intervals.
The standard deviation of all the values recorded by the datasonde in 15 minute intervals.
Sample 4Sample 3Sample 1 Sample 2Analyte
(units)
Note: Data gaps appear when the sonde is removed for calibration or when the flow depth is below the sensors
REPORT GENERATED ON 6/6/2018
Continuous Water Quality
Monitoring Periodic Report
Smith Branch A (March 28, 2018 -- May 9, 2018)
MINIMUM
OBSERVED
MAXIMUM
OBSERVED
MEDIAN
OBSERVED
MEAN
OBSERVED
STANDARD
DEVIATION
STREAM NAME: STAGE (FT): 0.2 4.3 0.2 0.3 0.3
LOCATION:
NEAREST ADDRESS:
COORDINATES:
TMDL/IMPAIRMENT:
NEIGHBORING
LANDUSE:
SPATIAL LOCATION:
MAX. DAILY RAINFALL: 1.6 inches
TOTAL RAINFALL (FOR
PERIOD):5.1 inches
34.037933,-81.0591
Fecal Coliform
Residential and commercial
Most Downstream Site
PARAMETER
Smith Branch
DESCRIPTION
Off Mountain Drive
3950 Clement Rd
Columbia, SC 29203
55 75 63 63 4
0.1
TURBIDITY (NTU): 4 397 10 16 22
pH: 6.5 7.6 7.1 7.1
CONTINUOUS
WATER QUALITY
PARAMETERS:
SUMMARY STATISTICS
TEMPERATURE (°F):
TOTAL NO. STORMS
OVER 0.1 INCH:7
0.7
SPECIFIC
CONDUCTIVITY
(mS/cm):
0.02 0.167 0.112 0.107 0.032
DISSOLVED OXYGEN
(mg/L):6.8 11.0 8.4 8.5
3579
1113
3/28 3/30 4/1 4/3 4/5 4/7 4/9 4/11 4/13 4/15 4/17 4/19 4/21 4/23 4/25 4/27 4/29 5/1 5/3 5/5 5/7 5/9
mg/
L
Dissolved Oxygen 4 mg/L (SCDHEC Low Standard)
0
100
200
300
400
3/28 3/30 4/1 4/3 4/5 4/7 4/9 4/11 4/13 4/15 4/17 4/19 4/21 4/23 4/25 4/27 4/29 5/1 5/3 5/5 5/7 5/9
NTU
Turbidity
0.0
0.5
1.0
1.5
2.00
2
4
6
8
3/28 3/30 4/1 4/3 4/5 4/7 4/9 4/11 4/13 4/15 4/17 4/19 4/21 4/23 4/25 4/27 4/29 5/1 5/3 5/5 5/7 5/9
Rai
nfa
ll, in
Stag
e, f
t
Stage & Rainfall
50
60
70
80
3/28 3/30 4/1 4/3 4/5 4/7 4/9 4/11 4/13 4/15 4/17 4/19 4/21 4/23 4/25 4/27 4/29 5/1 5/3 5/5 5/7 5/9
°F
Water Temp
6.4
6.8
7.2
7.6
8.0
3/28 3/30 4/1 4/3 4/5 4/7 4/9 4/11 4/13 4/15 4/17 4/19 4/21 4/23 4/25 4/27 4/29 5/1 5/3 5/5 5/7 5/9
pH
pH
0.02
0.06
0.10
0.14
0.18
3/28 3/30 4/1 4/3 4/5 4/7 4/9 4/11 4/13 4/15 4/17 4/19 4/21 4/23 4/25 4/27 4/29 5/1 5/3 5/5 5/7 5/9
mS/
cm
Specific Conductivity
SCDHEC in-stream standard: Daily average not less than 5 mg/L with a low of 4 mg/L
Note: Data gaps appear when the sonde is removed for calibration or when the flow depth is below the sensors
REPORT GENERATED ON 6/6/2018
Continuous Water Quality
Monitoring Periodic Report
Smith Branch A (March 28, 2018 -- May 9, 2018)
Explanation of Statistics:
MINIMUM
OBSERVED
MAXIMUM
OBSERVED
MEDIAN OBSERVED
MEAN OBSERVED
STANDARD
DEVIATION
Sampled Data:
Time Result Time Result Time Result Time Result
Escherichia coli
(MPN/100mL)
Total Suspended
Solids (mg/L)
Total Phosphorus
(mg/L)
Total Nitrogen
(mg/L)Note:
The minimum of the values recorded by the datasonde in 15 minute intervals.
The maximum of the values recorded by the datasonde in 15 minute intervals.
The average of all the values recorded by the datasonde in 15 minute intervals.
The median of all the values recorded by the datasonde in 15 minute intervals.
The standard deviation of all the values recorded by the datasonde in 15 minute intervals.
Sample 4Sample 3Sample 1 Sample 2Analyte
(units)
Note: Data gaps appear when the sonde is removed for calibration or when the flow depth is below the sensors
REPORT GENERATED ON 6/6/2018
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