Sammamish River Diel Dissolved Oxygen and pH Study
September 21, 2005
STUDY AREA
Sammamish River Basins
Big Bear Creek
Little Bear Creek
Swamp Creek
North Creek
Lndcov01_py.shpUrban/High DensityMixed Urban/Low DensityWaterBare EarthConifer ForestDeciduous ForestMixed ForestRecent Regenerated ForestRecent ClearcutHerbaceous VegetationShrub/Scrub Vegetation
Sammrcl_clean.shpSrbasin_blank3.shp
Study Goals
• Diel variation of DO and pH during summer low-flow period
• Focus on upper reach between Lake Sammamish and Woodinville
• Provide information for development of dynamic water quality model
CE-QUAL-W2 Model
• Vertically 2-D model
• Laterally averaged
• Hydrodynamics, temperature, algae/eutrophicaton kinetics
• Epiphyton and riparian shade model added recently
Sammamish River Model
Historical Data
## #
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#
0486
0450D
0450C
0450BB
0450B
0450A
0450
1/1/2003 5/1/2003 9/1/2003 1/1/2004 5/1/2004 9/1/2004 1/1/2005
Dis
solv
ed O
xyge
n (m
g/L)
5
6
7
8
9
10
11
12
13
Marymoor Park (0486)below Big Bear (0450D)NE 124th Street (0450C)above Little Bear (0450BB)above North (0450B)Bothell Landing (0450A)Kenmore (0450)
Sammamish River routine grab ambient monitoring data
DISSOLVED OXYGEN 2003 - 2004
1/1/2003 5/1/2003 9/1/2003 1/1/2004 5/1/2004 9/1/2004 1/1/2005
Dis
solv
ed O
xyge
n (m
g/L)
5
6
7
8
9
10
11
12
13
Marymoor Park (0486)below Big Bear (0450D)NE 124th Street (0450C)above Little Bear (0450BB)above North (0450B)Bothell Landing (0450A)Kenmore (0450)
Sammamish River routine grab ambient monitoring data
DISSOLVED OXYGEN 2003 - 2004
Monitoring Locations
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#
Redmond Rowing Club
Big Bear Creek
Redmond Railroad Bridge
NE 116th St Bridge
NE 145th St Bridge
Woodinville Railroad Bridge
I-405 Bridges
Blyth Park
Reconnaissance Data
pH
8/7/00 00:00 8/21/00 00:00 9/4/00 00:00 9/18/00 00:00
pH
7.0
7.2
7.4
7.6
7.8
8.0
8.2
Dissolved Oxygen Concentration
8/7/00 00:00 8/21/00 00:00 9/4/00 00:00 9/18/00 00:00
DO
(m
g/L)
02468
101214
Redmond Railroad Bridge
Dissolved Oxygen Saturation
8/7/00 00:00 8/21/00 00:00 9/4/00 00:00 9/18/00 00:00
DO
% s
at.
020406080
100120140
Sammamish River diel DO and pH data collected in 2000
Redmond Rowing ClubRedmond Railroad Bridge116th Avenue BridgeBig Bear Creek near Mouth
Dissolved Oxygen Saturation
8/5/02 00:00 8/19/02 00:00 9/2/02 00:00 9/16/02 00:00
DO
% s
at.
020406080
100120140
Dissolved Oxygen Concentration
8/5/02 00:00 8/19/02 00:00 9/2/02 00:00 9/16/02 00:00
DO
(m
g/L)
02468
101214
pH
8/5/02 00:00 8/19/02 00:00 9/2/02 00:00 9/16/02 00:00
pH
6.5
7.0
7.5
8.0
8.5
9.0
YSI DO sensor at 116th failed
YSI DO sensor at 116th failed
Noted drift of pH probe at Redmond Rowing Club
Deployment at:Redmond Rowing Club
Deployment at:Redmond Rowing Club116th Ave Bridge
Deployment at:Redmond Rowing ClubRedmond Railroad Bridge
Deployment at:Redmond Rowing ClubBig Bear Creek near mouthRedmond Railroad Bridge
Sammamish River diel DO and pH data collected in 2002
2003 Study Results
Sammamish River 2003 YSI Sonde Deployment History
Jun Jul Aug Sep Oct
BLYTH
I-405
WRB
145th
116th
RRB
BBC
RRC
RRC = Redmond Rowing ClubBBC = Big Bear CreekRRB = Redmond Railroad Bridge116th = NE 116th St Bridge
145th = NE 145th St BridgeWRB = Woodinville Railroad BridgeI-405 = I-405 BridgeBLYTH = Blyth Park Railroad Bridge
Photo Tour of Sampling Sites
Redmond Rowing Club
Between Bear Creek and Redmond Railroad Bridge
Redmond Railroad Bridge
Redmond Railroad Bridge
Upstream of NE 116th St Bridge
Upstream of NE 145th St Bridge
Woodinville Railroad Bridge
I-405 Bridges
Upstream of Blyth Park (old Railroad Bridge)
Summer 2003 Flow and Precipitation Conditions
May Jun Jul Aug Sep Oct Nov
Pre
cipi
tatio
n (in
)
0
1
2
3
4
Flo
w (
cfs)
1
10
100
1000
Little Bear I&I rainfall gaugeLittle Bear Creek (30a) stream gauge
May Jun Jul Aug Sep Oct Nov
Pre
cipi
tatio
n (in
)
0
1
2
3
4
Flo
w (
cfs)
1
10
100
1000
Marymoor Park I&I rainfall gaugeBig Bear Creek (02a) stream gauge
Sept. 8
Daily maximum discharge and total daily precipitation recorded by local King County gauges in the Little Bear and Big Bear Creek basins during the 2003 study
Time Series Data
Temperature
5/1/03 0:00 6/1/03 0:00 7/1/03 0:00 8/1/03 0:00 9/1/03 0:00 10/1/03 0:00 11/1/03 0:00
oC
121416182022242628
Redmond Rowing ClubRedmond Railroad BridgeWoodinville Railroad Bridge
Specific Conductance
5/1/03 0:00 6/1/03 0:00 7/1/03 0:00 8/1/03 0:00 9/1/03 0:00 10/1/03 0:00 11/1/03 0:00
µS
/cm
80
100
120
140
160
Dissolved Oxygen Concentration
5/1/03 0:00 6/1/03 0:00 7/1/03 0:00 8/1/03 0:00 9/1/03 0:00 10/1/03 0:00 11/1/03 0:00
mg
/L
2
4
6
8
10
12
14
16
Dissolved Oxygen Percent Saturation
5/1/03 0:00 6/1/03 0:00 7/1/03 0:00 8/1/03 0:00 9/1/03 0:00 10/1/03 0:00 11/1/03 0:00
%
20
40
60
80
100
120
140
160
180
pH
Date/Time
5/1/03 0:00 6/1/03 0:00 7/1/03 0:00 8/1/03 0:00 9/1/03 0:00 10/1/03 0:00 11/1/03 0:00
pH
6.5
7.0
7.5
8.0
8.5
9.0
9.5
Sammamish River YSI EDS data, 2003
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#
Redmond Rowing Club
Redmond Railroad Bridge
Woodinville Railroad Bridge
Temperature
7/22/03 0:00 7/24/03 0:00 7/26/03 0:00 7/28/03 0:00 7/30/03 0:00
o C
16
18
20
22
24
26
NE 116thNE 145thI-405 Blyth ParkBig Bear Creek
Specific Conductance
7/22/03 0:00 7/24/03 0:00 7/26/03 0:00 7/28/03 0:00 7/30/03 0:00
/cm
120
130
140
150
160
170
Dissolved Oxygen Concentration
7/22/03 0:00 7/24/03 0:00 7/26/03 0:00 7/28/03 0:00 7/30/03 0:00
mg/
L
56789
10111213
Dissolved Oxygen Saturation
7/22/03 0:00 7/24/03 0:00 7/26/03 0:00 7/28/03 0:00 7/30/03 0:00
%
40
60
80
100
120
140
160
pH
7/22/03 0:00 7/24/03 0:00 7/26/03 0:00 7/28/03 0:00 7/30/03 0:00
6.4
6.8
7.2
7.6
8.0
8.4
8.8
Sammamish River YSI data from the third deployment
7/22/03 through 7/30/03
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#
Blyth Park I-405 Bridges
NE 145th St Bridge
NE 116th St Bridge
Big Bear Creek
Temperature
8/22/03 0:00 8/24/03 0:00 8/26/03 0:00 8/28/03 0:00 8/30/03 0:00 9/1/03 0:00 9/3/03 0:00
o C
12
14
16
18
20
22
24
NE 116thNE 145thI-405 Blyth ParkBig Bear Creek
Specific Conductance
8/22/03 0:00 8/24/03 0:00 8/26/03 0:00 8/28/03 0:00 8/30/03 0:00 9/1/03 0:00 9/3/03 0:00
µS
/cm
110120130140150160170180190
Dissolved Oxygen Concentration
8/22/03 0:00 8/24/03 0:00 8/26/03 0:00 8/28/03 0:00 8/30/03 0:00 9/1/03 0:00 9/3/03 0:00
mg/
L
6789
1011121314
Dissolved Oxygen Saturation
8/22/03 0:00 8/24/03 0:00 8/26/03 0:00 8/28/03 0:00 8/30/03 0:00 9/1/03 0:00 9/3/03 0:00
%
60
80
100
120
140
160
pH
8/22/03 0:00 8/24/03 0:00 8/26/03 0:00 8/28/03 0:00 8/30/03 0:00 9/1/03 0:00 9/3/03 0:00
6.8
7.2
7.6
8.0
8.4
8.8
9.2
Sammamish River YSI data from the fourth deployment
8/22/03 through 9/2/03
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#
Blyth Park I-405 Bridges
NE 145th St Bridge
NE 116th St Bridge
Big Bear Creek
Longitudinal Summary Plots
Maximum Temperature
River Mile above confluence with Lake Washington
0 2 4 6 8 10 12 14
oC
16
18
20
22
24
26
28
30
May 31June 27July 26August 25October 1
Temperature Range
River Mile above confluence with Lake Washington
0 2 4 6 8 10 12 14
oC
0
1
2
3
4
5
Minimum DissolvedOxygen
River Mile above confluence with Lake Washington
0 2 4 6 8 10 12 14
mg/
L
56789
101112131415
Dissolved Oxygen Range
River Mile above confluence with Lake Washington
0 2 4 6 8 10 12 14
mg/
L
0123456789
10
Big BearCreek
Little BearCreek
NorthCreek
SwampCreek
Longitudinal profiles of Sammamish River maximum temperature, temperature range, minimum DO, and DO range for selected days in 2003
Maximum pH
River Mile above confluence with Lake Washington
0 2 4 6 8 10 12 14
5
6
7
8
9
10
May 31June 27July 26August 25October 1Col 154 vs Col 153
pH Range
River Mile above confluence with Lake Washington
0 2 4 6 8 10 12 14
0
1
2
Minimum Dissolved Oxygen Saturation
River Mile above confluence with Lake Washington
0 2 4 6 8 10 12 14
%
60
80
100
120
140
Dissolved Oxygen Saturation Range
River Mile above confluence with Lake Washington
0 2 4 6 8 10 12 14
mg/
L
0
20
40
60
80
100
120
140
Big BearCreek
Little BearCreek
NorthCreek
SwampCreek
Longitudinal profiles of Sammamish River maximum pH, pH range, minimum DO percent saturation, and DO percent saturation range for selected days in 2003
Comparison to Water Quality Standards
7-Day Moving Average of Daily Maximum Temperature
May Jun Jul Aug Sep Oct Nov
o C
14
16
18
20
22
24
26
28
RRCBBCRRBNE116thNE145th WRBI405BLYTHWQS
Daily Minimum Dissolved Oxygen Concentration
May Jun Jul Aug Sep Oct Nov
mg/
L
2
4
6
8
10
12
14
Daily Minimum and Maximum pH
2003
May Jun Jul Aug Sep Oct Nov
6
7
8
9
10
Comparison of 2003 Sammamish River YSI continuous temperature, DO and pH data to water quality standards
Critical Period for DO?
1/1/2003 5/1/2003 9/1/2003 1/1/2004 5/1/2004 9/1/2004 1/1/2005
Dis
solv
ed O
xyge
n (m
g/L)
5
6
7
8
9
10
11
12
13
Marymoor Park (0486)below Big Bear (0450D)NE 124th Street (0450C)above Little Bear (0450BB)above North (0450B)Bothell Landing (0450A)Kenmore (0450)
Sammamish River routine grab ambient monitoring data
DISSOLVED OXYGEN 2003 - 2004
1/1/2003 5/1/2003 9/1/2003 1/1/2004 5/1/2004 9/1/2004 1/1/2005
DO
sat
ura
tio
n (
%)
50
60
70
80
90
100
110
120
130
Marymoor Park (0486)below Big Bear (0450D)NE 124th Street (0450C)above Little Bear (0450BB)above North (0450B)Bothell Landing (0450A)Kenmore (0450)
Sammamish River routine grab ambient monitoring data
DO SATURATION 2003 - 2004
Unintended Results
Storm Event
May Jun Jul Aug Sep Oct Nov
Pre
cipi
tatio
n (in
)
0
1
2
3
4
Flo
w (
cfs)
1
10
100
1000
Little Bear I&I rainfall gaugeLittle Bear Creek (30a) stream gauge
May Jun Jul Aug Sep Oct Nov
Pre
cipi
tatio
n (in
)
0
1
2
3
4
Flo
w (
cfs)
1
10
100
1000
Marymoor Park I&I rainfall gaugeBig Bear Creek (02a) stream gauge
Sept. 8
Daily maximum discharge and total daily precipitation recorded by local King County gauges in the Little Bear and Big Bear Creek basins during the 2003 study
Temperature
9/1/03 0:00 9/5/03 0:00 9/9/03 0:00 9/13/03 0:00
oC
121416182022242628
Redmond Rowing ClubRedmond Railroad BridgeWoodinville Railroad Bridge
Specific Conductance
9/1/03 0:00 9/5/03 0:00 9/9/03 0:00 9/13/03 0:00
µS
/cm
60
80
100
120
140
160
Dissolved Oxygen Concentration
9/1/03 0:00 9/5/03 0:00 9/9/03 0:00 9/13/03 0:00
mg
/L
2
4
6
8
10
12
14
16
Dissolved Oxygen Percent Saturation
9/1/03 0:00 9/5/03 0:00 9/9/03 0:00 9/13/03 0:00
%
20
40
60
80
100
120
140
160
180
pH
Date/Time
9/1/03 0:00 9/5/03 0:00 9/9/03 0:00 9/13/03 0:00
pH
6.5
7.0
7.5
8.0
8.5
9.0
9.5
Temperature, specific conductance, DO and pH data recorded by the YSI EDS sonde
9/1/2003 through 9/14/2003
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#
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#
Redmond Rowing Club
Redmond Railroad Bridge
Woodinville Railroad Bridge
Unintended Results
Conductance/Groundwater Linkages
River Mile above confluence with Lake Washington
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
µS
cm
-1
100
120
140
160
180
200
RRC
BBC
RRB
NE116th
NE145th
WRB
I405
BLYTH
Big BearCreek
Little Bear Creek
NorthCreek
SwampCreek
Longitudinal trend in specific conductance, 8/22/2003 through 9/2/2003
Sammamish River Specific Conductance2003
May Jun Jul Aug Sep Oct Nov
Spe
cific
Con
duct
ance
(µ
S/c
m)
60
80
100
120
140
160
180
200
Redmond Rowing ClubBig Bear CreekRedmond Railroad BridgeNE 116th Street BridgeNE 145th Street BridgeWoodinville Railroad BridgeI-405Blyth Park
Sammamish River YSI unqualified
specific conductance data, 2003
Temperature
7/22/03 0:00 7/24/03 0:00 7/26/03 0:00 7/28/03 0:00 7/30/03 0:00
o C
16
18
20
22
24
26
NE 116thNE 145thI-405 Blyth ParkBig Bear Creek
Specific Conductance
7/22/03 0:00 7/24/03 0:00 7/26/03 0:00 7/28/03 0:00 7/30/03 0:00
/cm
120
130
140
150
160
170
Dissolved Oxygen Concentration
7/22/03 0:00 7/24/03 0:00 7/26/03 0:00 7/28/03 0:00 7/30/03 0:00
mg/
L
56789
10111213
Dissolved Oxygen Saturation
7/22/03 0:00 7/24/03 0:00 7/26/03 0:00 7/28/03 0:00 7/30/03 0:00
%
40
60
80
100
120
140
160
pH
7/22/03 0:00 7/24/03 0:00 7/26/03 0:00 7/28/03 0:00 7/30/03 0:00
6.4
6.8
7.2
7.6
8.0
8.4
8.8
Sammamish River YSI data from the third deployment
7/22/03 through 7/30/03
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Blyth Park I-405 Bridges
NE 145th St Bridge
NE 116th St Bridge
Big Bear Creek
Modeling to Identify Cause of pH/DO Fluctuations
QUAL2Kw
Sammamish River (test) (7/29/2003)
0
2
4
6
8
10
12
14
16
0 2 4 6 8 10 12
distance downstream (Km)
diss
olve
d ox
ygen
(mg/
L)
DO(mgO2/L) DO (mgO2/L) data DO(mgO2/L) Min DO(mgO2/L) Max
Minimum DO-data Maximum DO-data DO sat
Sammamish River (test) (7/29/2003)
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
0 2 4 6 8 10 12
distance downstream (Km)
pH pH data pH Min pH Max Minimum pH-data Maximum pH-data pHsat
Sammamish River (test) 7/9/2003
-60
-40
-20
0
20
40
60
80
2.0 2.2 2.4 2.6 2.8 3.0 3.2
time during simulation (days)
dis
solv
ed o
xyg
en f
lux
(gO
2/m
^2/
d)
reaerationfast DOCammoniaphytoplankton respirationphytoplankton photosynthesisperiphyton respirationperiphyton photosynthesissediment oxygen demandhyporheic exchangenet groundwater/tribsnet advection/dispersion/dam spill
Model Segment below Bear Creek
Sammamish River (test) 7/9/2003
-60
-40
-20
0
20
40
60
80
2.0 2.2 2.4 2.6 2.8 3.0 3.2
time during simulation (days)
dis
solv
ed o
xyg
en f
lux
(gO
2/m
^2/
d)
reaerationfast DOCammoniaphytoplankton respirationphytoplankton photosynthesisperiphyton respirationperiphyton photosynthesissediment oxygen demandhyporheic exchangenet groundwater/tribsnet advection/dispersion/dam spill
Periphyton Photosynthesis
Model Segment below Bear Creek
Sammamish River (test) 7/9/2003
-60
-40
-20
0
20
40
60
80
2.0 2.2 2.4 2.6 2.8 3.0 3.2
time during simulation (days)
dis
solv
ed o
xyg
en f
lux
(gO
2/m
^2/
d)
reaerationfast DOCammoniaphytoplankton respirationphytoplankton photosynthesisperiphyton respirationperiphyton photosynthesissediment oxygen demandhyporheic exchangenet groundwater/tribsnet advection/dispersion/dam spill
Reaeration
Model Segment below Bear Creek
Sammamish River (test) 7/9/2003
-60
-40
-20
0
20
40
60
80
2.0 2.2 2.4 2.6 2.8 3.0 3.2
time during simulation (days)
dis
solv
ed o
xyg
en f
lux
(gO
2/m
^2/
d)
reaerationfast DOCammoniaphytoplankton respirationphytoplankton photosynthesisperiphyton respirationperiphyton photosynthesissediment oxygen demandhyporheic exchangenet groundwater/tribsnet advection/dispersion/dam spill
Periphyton respiration
Model Segment below Bear Creek
Conclusions
• Continuous monitoring of DO and pH is feasible provided proper and well maintained equipment are available.
• Significant diel variation in DO and pH occurs in the Sammamish River particularly between Big Bear and Little Bear creeks
• Unintentionally, other phenomena were also observed
Recommendations
• Synoptic temperature/conductance study to identify significant surface and groundwater inputs to the river
• Quantify the distribution and biomass of aquatic plants and attached algae in the Sammamish River
• Conduct a time-of-travel study in the Sammamish River to support model development
• Confirm/investigate fluctuation of conductance in Big Bear Creek
THE END
Temperature
5/1/03 0:00 6/1/03 0:00 7/1/03 0:00 8/1/03 0:00 9/1/03 0:00 10/1/03 0:00 11/1/03 0:00
oC
121416182022242628
Redmond Rowing ClubRedmond Railroad BridgeWoodinville Railroad Bridge
Specific Conductance
5/1/03 0:00 6/1/03 0:00 7/1/03 0:00 8/1/03 0:00 9/1/03 0:00 10/1/03 0:00 11/1/03 0:00
µS
/cm
80
100
120
140
160
Dissolved Oxygen Concentration
5/1/03 0:00 6/1/03 0:00 7/1/03 0:00 8/1/03 0:00 9/1/03 0:00 10/1/03 0:00 11/1/03 0:00
mg
/L
02468
1012141618
Dissolved Oxygen Percent Saturation
5/1/03 0:00 6/1/03 0:00 7/1/03 0:00 8/1/03 0:00 9/1/03 0:00 10/1/03 0:00 11/1/03 0:00
%
020406080
100120140160180200
pH
Date/Time
5/1/03 0:00 6/1/03 0:00 7/1/03 0:00 8/1/03 0:00 9/1/03 0:00 10/1/03 0:00 11/1/03 0:00
pH
6.0
6.5
7.0
7.5
8.0
8.5
9.0
9.5
DO probe failure and spikes at RRC
Spikes due to redeploymentand calibration checks
DO probe failure and spikes at RRC
Sammamish River YSI EDS raw data, 2003
Dissolved Oxygen Concentration
8/25/03 0:00 8/29/03 0:00 9/2/03 0:00 9/6/03 0:00 9/10/03 0:00m
g/L
5
7
9
11
13
15
Redmond Rowing Club (Homer)Redmond Rowing Club (Poirot)
DO Charge
8/25/03 0:00 8/29/03 0:00 9/2/03 0:00 9/6/03 0:00 9/10/03 0:00
#
30
35
40
45
50
55
60
Placed second sonde (Poirot) at same Redmond Rowing Club location (Homer) on 9/2/2003
Dissolved Oxygen Concentration
9/25/03 0:00 9/27/03 0:00 9/29/03 0:00 10/1/03 0:00 10/3/03 0:00
mg
/L
7
8
9
10
11
12
Redmond Rowing Club (EDS-Homer)Redmond Rowing Club (6600-Monica)
DO Charge
9/25/03 0:00 9/27/03 0:00 9/29/03 0:00 10/1/03 0:00 10/3/03 0:00
#
30
35
40
45
50
55
60
Placed second sonde (Monica) at same Redmond Rowing Club location (Homer) on 9/22/2003
Temperature
5/29/03 0:00 5/31/03 0:00 6/2/03 0:00 6/4/03 0:00 6/6/03 0:00
o C
12
14
16
18
20
22
NE 116thI-405 Big Bear Creek
Specific Conductance
5/29/03 0:00 5/31/03 0:00 6/2/03 0:00 6/4/03 0:00 6/6/03 0:00
µS
/cm
8090
100110120130140150160
Dissolved Oxygen Concentration
5/29/03 0:00 5/31/03 0:00 6/2/03 0:00 6/4/03 0:00 6/6/03 0:00
mg/
L
6
8
10
12
14
16
Dissolved Oxygen Saturation
5/29/03 0:00 5/31/03 0:00 6/2/03 0:00 6/4/03 0:00 6/6/03 0:00
%
60
80
100
120
140
160
180
pH
5/29/03 0:00 5/31/03 0:00 6/2/03 0:00 6/4/03 0:00 6/6/03 0:00
6.8
7.2
7.6
8.0
8.4
8.8
Sammamish River YSI unqualified data from the first deployment
5/29/03 through 6/6/03
Temperature
6/24/03 0:00 6/26/03 0:00 6/28/03 0:00 6/30/03 0:00 7/2/03 0:00
oC
12
14
16
18
20
22
24
NE 116thI-405 Big Bear Creek
Specific Conductance
6/24/03 0:00 6/26/03 0:00 6/28/03 0:00 6/30/03 0:00 7/2/03 0:00
µS
/cm
130
135
140
145
150
155
160
165
Dissolved Oxygen Concentration
6/24/03 0:00 6/26/03 0:00 6/28/03 0:00 6/30/03 0:00 7/2/03 0:00
mg/
L
4
6
8
10
12
14
Dissolved Oxygen Saturation
6/24/03 0:00 6/26/03 0:00 6/28/03 0:00 6/30/03 0:00 7/2/03 0:00
%
60
80
100
120
140
160
pH
6/24/03 0:00 6/26/03 0:00 6/28/03 0:00 6/30/03 0:00 7/2/03 0:00
6.8
7.2
7.6
8.0
8.4
8.8
9.2
Sammamish River YSI unqualified data from the second deployment
6/24/03 through 7/2/03
Temperature
9/25/03 0:00 9/27/03 0:00 9/29/03 0:00 10/1/03 0:00 10/3/03 0:00
oC
12
13
14
15
16
17
18
19
NE 116thNE 145thBig Bear Creek
Specific Conductance
9/25/03 0:00 9/27/03 0:00 9/29/03 0:00 10/1/03 0:00 10/3/03 0:00
µS
/cm
124126128130132134136138140142
Dissolved Oxygen Concentration
9/25/03 0:00 9/27/03 0:00 9/29/03 0:00 10/1/03 0:00 10/3/03 0:00
mg/
L
56789
10111213
Dissolved Oxygen Saturation
9/25/03 0:00 9/27/03 0:00 9/29/03 0:00 10/1/03 0:00 10/3/03 0:00
%
40
60
80
100
120
140
pH
9/25/03 0:00 9/27/03 0:00 9/29/03 0:00 10/1/03 0:00 10/3/03 0:00
6.8
7.2
7.6
8.0
8.4
Sammamish River YSI unqualified data from the fifth deployment
9/25/03 through 10/3/03
Maximum Specific Conductance
River Mile above confluence with Lake Washington
0 2 4 6 8 10 12 14
µS
cm
-1
50
100
150
200
250
May 31June 27July 26August 25October 1
Specific ConductanceRange
River Mile above confluence with Lake Washington
0 2 4 6 8 10 12 14
µS
cm
-1
0
2
4
6
8
10
Big BearCreek
Little BearCreek
NorthCreek
SwampCreek
Temperature (oC)
Grab
16 18 20 22 24
YS
I S
onde
16
18
20
22
24 RRC vs 0625RRC vs 0486RRB vs 0450D WRB vs 0450BB1:1
Specific Conductance (µS cm-1)
Grab
100 120 140 160 180
YS
I S
onde
100
120
140
160
180
RRC vs 0625RRC vs 0486RRB vs 0450D WRB vs 0450BB1:1
Dissolved Oxygen (mg L-1)
Grab
6 8 10 12
YS
I S
ond
e
6
8
10
12
RRC vs 0625RRC vs 0486RRB vs 0450D WRB vs 0450BB1:1
pH
Grab
6.0 6.5 7.0 7.5 8.0 8.5 9.0
YS
I S
onde
6.0
6.5
7.0
7.5
8.0
8.5
9.0
RRC vs 0625RRC vs 0486RRB vs 0450D WRB vs 0450BB1:1
Temperature
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan
oC
5
10
15
20
25
30
RRC06250486
Specific Conductance
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan
µS
cm
-1
40
60
80
100
120
140
160
180
200
Dissolved Oxygen
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan
mg
L-1
6
8
10
12
14
pH
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan
5
6
7
8
9
10
Temperature
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan
oC
5
10
15
20
25
30
RRB0450D
Specific Conductance
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan
µS
cm
-1
40
60
80
100
120
140
160
180
200
Dissolved Oxygen
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan
mg
L-1
6
8
10
12
14
pH
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan
5
6
7
8
9
10
Temperature
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan
oC
2468
1012141618202224
BBC0484
Specific Conductance
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan
µS
cm
-1
40
60
80
100
120
140
160
180
200
Dissolved Oxygen
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan
mg
L-1
6
8
10
12
14
pH
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan
5
6
7
8
9
10
Temperature
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan
oC
5
10
15
20
25
30
NE116thNE145th 0450C
Specific Conductance
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan
µS
cm
-1
40
60
80
100
120
140
160
180
200
Dissolved Oxygen
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan
mg
L-1
6
8
10
12
14
pH
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan
5
6
7
8
9
10
Temperature
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan
oC
5
10
15
20
25
30
WRB0450BB
Specific Conductance
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan
µS
cm
-1
40
60
80
100
120
140
160
180
200
Dissolved Oxygen
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan
mg
L-1
6
8
10
12
14
pH
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan
5
6
7
8
9
10
Temperature
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan
oC
468
101214161820222426
I-4050450B
Specific Conductance
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan
µS
cm
-1
40
60
80
100
120
140
160
180
200
Dissolved Oxygen
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan
mg
L-1
6
8
10
12
14
pH
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan
5
6
7
8
9
10
Temperature
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan
oC
468
101214161820222426
Blyth0450A
Specific Conductance
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan
µS
cm
-1
40
60
80
100
120
140
160
180
200
Dissolved Oxygen
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan
mg
L-1
6
8
10
12
14
pH
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan
5
6
7
8
9
10
$T
$T
$T
$T
$T
$T$T
$TS
S
S
S S S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S S S S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
SS S
S
S
S
S S S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
Big B
ea
r C
reek
Evans Creek
Litt
le B
ear
Cre
ek
No
rth
Cre
ek
Sw
am
p C
ree
k
Sammam
ish Riv er
Lak e
Was
hing
ton
Lake
Sam
mam
i sh
Blyth Park I-405
Woodinville Railroad Bridge
NE 145th Street
NE 116th Street
Big Bear Creek
Redmond Rowing Club
Redmond Railroad Bridge
8000 0 8000 16000 Feet
N
Model Setup
2
3
56789
37 3130
29
2625
39
21
19181716151413
1110
404243
23
4
34 33 32 28 27
24
38
20
12
4144
22
Sw
amp
Cre
ek
Nor
th C
reek
Litt
le B
ear
Cre
ek
Bear-Evans Creek
Lake Sam
mam
ish
Lake Wash ington
Map produced by GIS sta ff, Wastewater Treatment Division (WTD), King County Department of Natural Resources. WTD disclaims any warranty for use of this digital produc t beyond that for which it was designed. Neither this digita l product, nor any portion thereof may be reproduced in any form or by any means without the expressed written authorization of WTD. This document includesdata copyrighted by the Kroll Map Company and is being used with their permission. Use is re stric ted.
2000 0 2000 4000 6000 8000 10000 Feet
N
EW
S
Sammamish River Model Segmentation
WaterbodyTributariesSammamish RiverSegment Boundaries
March 12, 2001
Legend
Weir
Railroad Bridge
51N116th St
NE 145th St
Blythe Park
Reach Boundary
Upstream ModelBoundary
Kenmore BridgeDownstream ModelBoundary
124th St
SAMMAMISH RIVER WEIR (51m)
7-DAY MOVING AVERAGE OF DAILY MAXIMUM TEMPERATURE
0
5
10
15
20
25
30
1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005
oC
SAMMAMISH RIVER WILLOWS RUN (51N)
7-DAY MOVING AVERAGE OF DAILY MAXIMUM TEMPERATURE
0
5
10
15
20
25
30
1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005
oC
SAMMAMISH RIVER NE 145th ST (SMR0735000)
7-DAY MOVING AVERAGE OF DAILY MAXIMUM TEMPERATURE
0
5
10
15
20
25
30
1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005
oC
SAMMAMISH RIVER WOODINVILLE (SMR0545000)
7-DAY MOVING AVERAGE OF DAILY MAXIMUM TEMPERATURE
0
5
10
15
20
25
30
1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005
oC
BIG BEAR CREEK
7-DAY MOVING AVERAGE OF DAILY MAXIMUM TEMPERATURE
0
5
10
15
20
25
30
1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005
oC