Sammamish River Diel Dissolved Oxygen and pH Study September 21, 2005.

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

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


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


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


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

Upstream of NE 116th St Bridge

Upstream of NE 145th St 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


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


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



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


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


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


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



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


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


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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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


0 2 4 6 8 10 12 14

oC

0

1

2

3

4

5

Minimum DissolvedOxygen


0 2 4 6 8 10 12 14

mg/

L

56789

101112131415

Dissolved Oxygen Range


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


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


0 2 4 6 8 10 12 14

0

1

2

Minimum Dissolved Oxygen Saturation


0 2 4 6 8 10 12 14

%

60

80

100

120

140

Dissolved Oxygen Saturation Range


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


o C

14

16

18

20

22

24

26

28

RRCBBCRRBNE116thNE145th WRBI405BLYTHWQS

Daily Minimum Dissolved Oxygen Concentration


mg/

L

2

4

6

8

10

12

14

Daily Minimum and Maximum pH

2003


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



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



DO SATURATION 2003 - 2004

Unintended Results

Storm Event


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


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



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


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


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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Redmond Rowing Club



Unintended Results

Conductance/Groundwater Linkages


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


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



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


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


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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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


-60

-40

-20

0

20

40

60

80

2.0 2.2 2.4 2.6 2.8 3.0 3.2


dis

solv

ed o

xyg

en f

lux

(gO

2/m

^2/

d)


Periphyton Photosynthesis



-60

-40

-20

0

20

40

60

80

2.0 2.2 2.4 2.6 2.8 3.0 3.2


dis

solv

ed o

xyg

en f

lux

(gO

2/m

^2/

d)


Reaeration



-60

-40

-20

0

20

40

60

80

2.0 2.2 2.4 2.6 2.8 3.0 3.2


dis

solv

ed o

xyg

en f

lux

(gO

2/m

^2/

d)


Periphyton respiration


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



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


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


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


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


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


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


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


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


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


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


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


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


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


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


0 2 4 6 8 10 12 14

µS

cm

-1

50

100

150

200

250

May 31June 27July 26August 25October 1

Specific ConductanceRange


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


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


Temperature

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan

oC

5

10

15

20

25

30

RRC06250486



µS

cm

-1

40

60

80

100

120

140

160

180

200

Dissolved Oxygen


mg

L-1

6

8

10

12

14

pH


5

6

7

8

9

10

Temperature


oC

5

10

15

20

25

30

RRB0450D



µS

cm

-1

40

60

80

100

120

140

160

180

200

Dissolved Oxygen


mg

L-1

6

8

10

12

14

pH


5

6

7

8

9

10

Temperature


oC

2468

1012141618202224

BBC0484



µS

cm

-1

40

60

80

100

120

140

160

180

200

Dissolved Oxygen


mg

L-1

6

8

10

12

14

pH


5

6

7

8

9

10

Temperature


oC

5

10

15

20

25

30

NE116thNE145th 0450C



µS

cm

-1

40

60

80

100

120

140

160

180

200

Dissolved Oxygen


mg

L-1

6

8

10

12

14

pH


5

6

7

8

9

10

Temperature


oC

5

10

15

20

25

30

WRB0450BB



µS

cm

-1

40

60

80

100

120

140

160

180

200

Dissolved Oxygen


mg

L-1

6

8

10

12

14

pH


5

6

7

8

9

10

Temperature


oC

468

101214161820222426

I-4050450B



µS

cm

-1

40

60

80

100

120

140

160

180

200

Dissolved Oxygen


mg

L-1

6

8

10

12

14

pH


5

6

7

8

9

10

Temperature


oC

468

101214161820222426

Blyth0450A



µS

cm

-1

40

60

80

100

120

140

160

180

200

Dissolved Oxygen


mg

L-1

6

8

10

12

14

pH


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


NE 145th Street

NE 116th Street

Big Bear Creek

Redmond Rowing Club


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)


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)


0

5

10

15

20

25

30

1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005

oC

SAMMAMISH RIVER WOODINVILLE (SMR0545000)


0

5

10

15

20

25

30

1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005

oC

BIG BEAR CREEK


0

5

10

15

20

25

30

1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005

oC

Sammamish River Diel Dissolved Oxygen and pH Study September 21, 2005.

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Transcript of Sammamish River Diel Dissolved Oxygen and pH Study September 21, 2005.