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Scientific Investigations Report 2009–5078

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Assessment of Eutrophication in the Lower Yakima River Basin, Washington, 2004–07

Table 15. Data collection activities and site locations in the lower Yakima River basin, Washington, 2004–07.

[Field parameters include water temperature (°C), specific conductance (μs/cm), dissolved oxygen (mg/L), and pH (standard units). Shading indicates that measurement was made. Abbreviations: USGS, U.S. Geological Survey; RM, river mile; WWTP, wastewater treatment plant]

Reach USGS site
identification No.		 Site name River mile Discrete measurements
2004
Plants Water quality Physical Field parameters
Chlorophyll a (planktonic) Periphyton biomass Macrophyte biomass Plant tissue nutrients Periphytomers Nutrients Total organic carbon Dissolved silica Alkalinity Biochemical oxygen demand Suspended sediment Flow Depth or velocity Light extinction coefficient Turbidity
Naches 12494450 Naches River at RM 12.2 near Naches 12.2                                
12498690 Naches River above Diversion Dam near Yakima 3.5                                
12498990 Naches River at 40th Avenue near Yakima 2.8                                
12499000 Naches River near North Yakima 1.0                                
Zillah 12487000 Yakima River at Selah Gap near North Yakima 117.0                                
12485002 Roza Canal at Powerhouse at Yakima 113.3                                
12500005 Yakima River above Roza Power Return near Yakima 113.0                                
12500100 Yakima River at Birchfield Road near Yakima 111.3                                
463447120275200 Yakima WWTP 111.0                                
12500445 Wide Hollow Creek near Mouth at Union Gap 107.4                                
12500420 Moxee Drain at Birchfield Road near Union Gap 107.3                                
12500450 Yakima River above Ahtanum Creek at Union Gap 107.3                                
12502500 Ahtanum Creek at Union Gap 106.9                                
12503950 Yakima River at Parker 104.0                                
12504490 Sunnyside Canal at Diversion near Parker 103.8                                
12505040 Yakima River at RM 103 near Wapato 103.0                                
12505045 Yakima River at RM 102.8 near Parker 102.8                                
12505050 Yakima River near Wapato 102.7                                
12505060 Yakima River at RM 102.6 near Parker 102.6                                
12505100 Yakima River at Donald Rd at RM 100.3, at Donald 100.3                                
12505085 Yakima River at RM 100.8 near Donald 100.8                                
12505090 Yakima River at RM 100.7 near Donald 100.7                                
12505180 Roza Canal Wasteway No. 3 below Hwy 12 near Sawyer 98.0                                
12505270 Yakima River at RM 94.4 near Buena 95.0                                
12505300 Yakima River near Toppenish 93.1                                
12505310 Yakima River below Highway 22 near Toppenish 92.0                                
12505320 Yakima River at RM 91 at Zillah 91.2                                
1250532100 Yakima River below North Myers Road Bridge right bank near Zillah 91.0                                
1250532110 Yakima River below North Myers Road Bridge left bank near Zillah 91.0                                
1250532120 Yakima River at RM 90.9 near Zillah 90.9                                
1250532170 Yakima River at RM 90.6 near Zillah 90.6                                
1250532200 Yakima River at RM 90.4 near Zillah 90.4                                
1250532210 Yakima River at RM 90.3 near Zillah 90.3                                
1250532250 Yakima River at RM 90.1 near Zillah 90.1                                
1250532300 Yakima River at RM 89.8 near Zillah 89.8                                
1250532340 Yakima River at RM 89.5 near Zillah 89.5                                
462357120153200 Zillah WWTP 89.2                                
1250532400 Yakima River 3 feet from right bank at RM 89 near Zillah 89.0                                
1250532410 Yakima River 20 feet from right bank at RM 89 near Zillah 89.0                                
1250532420 Yakima River 50 feet from right bank at RM 89 near Zillah 89.0                                
12505325 Yakima River at RM 88.1 near Toppenish 88.1                                
1250532610 Yakima River at RM 88.0 near Zillah 88.0                                
1250532630 Yakima River at RM 87.9 near Zillah 87.9                                
1250532640 Yakima River at RM 87.7 near Zillah 87.7                                
1250532820 Yakima River at RM 86.8 near Zillah 86.8                                
1250532860 Yakima River at RM 86.7 near Zillah 86.7                                
1250532880 Yakima River at RM 86.6 near Zillah 86.6                                
12505330 Yakima River above East Toppenish Drain near Granger 86.5                                
12505350 East Toppenish Drain at Wilson Road near Toppenish 86.0                                
12505410 Sub-Drain No. 35 at Parton Road near Granger 83.2                                
12505440 Yakima River at Bridge Avenue at Granger 83.0                                
12505460 Granger Drain at mouth near Granger 82.8                                
462013120113700 Granger WWTP 82.8                                
12507560 Coulee Drain at North Satus Road near Satus 77.0                                
12507580 Yakima River above Satus Creek at RM 73 near Satus 73.0                                
12507584 Yakima River at Murray Road near Sunnyside 72.0                                
Mabton 12508620 Satus Creek at gaging station at Satus 69.6                                
12508680 Yakima River above Sulphur Creek at RM 61.3 near Mabton 61.3                                
12508850 Sulphur Creek Wasteway near Sunnyside 61.0                                
46140411959180 Mabton WWTP 59.5                                
12509052 Grandview WWTP 59.0                                
12509060 Yakima River at Mabton Siphon near Grandview 55.0                                
12509065 Yakima River at RM 53.3 near Grandview 53.3                                
12509070 Yakima River at RM 53.2 near Grandview 53.2                                
12509085 Yakima River at RM 52.5 near Grandview 52.5                                
12509090 Yakima River at RM 52.3 near Grandview 52.3                                
12509095 Yakima River at RM 52.1 near Grandview 52.1                                
12509100 Yakima River at RM 51.9 near Grandview 51.9                                
12509050 Yakima River at Euclid Bridge near Grandview 53.0                                
12509499 Chandler Canal at Bunn Road at Prosser 47.1                                
12509489 Yakima River at Prosser 47.0                                
Kiona 4612461119454700 Prosser WWTP 46.5                                
12509686 Yakima River near Whitstran 44.0                                
12509690 Yakima River above Snipes Creek and Spring Creek near Whitstran 43.0                                
12509710 Spring Creek at mouth near Whitstran 41.8                                
12509900 Yakima River above Chandler Pump near Whitstran 37.0                                
12510200 Corral Canyon Creek at mouth near Benton City 33.5                                
12510400 Yakima River at RM 31.3 above Benton City 31.3                                
12510500 Yakima River at Kiona 29.9                                
12510840 Yakima River at RM 21.8 near West Richland 21.8                                
12510845 Yakima River at RM 21.7 near West Richland 21.7                                
12510860 Yakima River at RM 21.1 near West Richland 21.1                                
12510865 Yakima River at RM 20.8 near West Richland 20.8                                
12510885 Yakima River at RM 20.2 near West Richland 20.2                                
12510890 Yakima River at RM 20.1 near West Richland 20.1                                
12510925 Yakima River at RM 19.1 near West Richland 19.1                                
12510950 Yakima River above Horn Rapids Dam near Richland 18.2                                
12511000 CID Canal at Horn Rapids Dam near West Richland 18.0                                
12511800 Yakima River at Van Geisan Bridge near Richland 8.4                                

Reach USGS site
identification No.		 Site name River mile Discrete measurements
2005
Plants Water quality Physical Field parameters
Chlorophyll a (planktonic) Periphyton biomass Macrophyte biomass Plant tissue nutrients Periphytomers Nutrients Total organic carbon Dissolved silica Alkalinity Biochemical oxygen demand Suspended sediment Flow Depth or velocity Light extinction coefficient Turbidity
Naches 12494450 Naches River at RM 12.2 near Naches 12.2                                
12498690 Naches River above Diversion Dam near Yakima 3.5                                
12498990 Naches River at 40th Avenue near Yakima 2.8                                
12499000 Naches River near North Yakima 1.0                                
Zillah 12487000 Yakima River at Selah Gap near North Yakima 117.0                                
12485002 Roza Canal at Powerhouse at Yakima 113.3                                
12500005 Yakima River above Roza Power Return near Yakima 113.0                                
12500100 Yakima River at Birchfield Road near Yakima 111.3                                
463447120275200 Yakima WWTP 111.0                                
12500445 Wide Hollow Creek near Mouth at Union Gap 107.4                                
12500420 Moxee Drain at Birchfield Road near Union Gap 107.3                                
12500450 Yakima River above Ahtanum Creek at Union Gap 107.3                                
12502500 Ahtanum Creek at Union Gap 106.9                                
12503950 Yakima River at Parker 104.0                                
12504490 Sunnyside Canal at Diversion near Parker 103.8                                
12505040 Yakima River at RM 103 near Wapato 103.0                                
12505045 Yakima River at RM 102.8 near Parker 102.8                                
12505050 Yakima River near Wapato 102.7                                
12505060 Yakima River at RM 102.6 near Parker 102.6                                
12505100 Yakima River at Donald Rd at RM 100.3, at Donald 100.3                                
12505085 Yakima River at RM 100.8 near Donald 100.8                                
12505090 Yakima River at RM 100.7 near Donald 100.7                                
12505180 Roza Canal Wasteway No. 3 below Hwy 12 near Sawyer 98.0                                
12505270 Yakima River at RM 94.4 near Buena 95.0                                
12505300 Yakima River near Toppenish 93.1                                
12505310 Yakima River below Highway 22 near Toppenish 92.0                                
12505320 Yakima River at RM 91 at Zillah 91.2                                
1250532100 Yakima River below N. Myers Road Bridge right bank near Zillah 91.0                                
1250532110 Yakima River below N. Myers Road Bridge left bank near Zillah 91.0                                
1250532120 Yakima River at RM 90.9 near Zillah 90.9                                
1250532170 Yakima River at RM 90.6 near Zillah 90.6                                
1250532200 Yakima River at RM 90.4 near Zillah 90.4                                
1250532210 Yakima River at RM 90.3 near Zillah 90.3                                
1250532250 Yakima River at RM 90.1 near Zillah 90.1                                
1250532300 Yakima River at RM 89.8 near Zillah 89.8                                
1250532340 Yakima River at RM 89.5 near Zillah 89.5                                
462357120153200 Zillah WWTP 89.2                                
1250532400 Yakima River 3 feet from right bank at RM 89 near Zillah 89.0                                
1250532410 Yakima River 20 feet from right bank at RM 89 near Zillah 89.0                                
1250532420 Yakima River 50 feet from right bank at RM 89 near Zillah 89.0                                
12505325 Yakima River at RM 88.1 near Toppenish 88.1                                
1250532610 Yakima River at RM 88.0 near Zillah 88.0                                
1250532630 Yakima River at RM 87.9 near Zillah 87.9                                
1250532640 Yakima River at RM 87.7 near Zillah 87.7                                
1250532820 Yakima River at RM 86.8 near Zillah 86.8                                
1250532860 Yakima River at RM 86.7 near Zillah 86.7                                
1250532880 Yakima River at RM 86.6 near Zillah 86.6                                
12505330 Yakima River above E. Toppenish Drain near Granger 86.5                                
12505350 East Toppenish Drain at Wilson Road near Toppenish 86.0                                
12505410 Sub-Drain No. 35 at Parton Road near Granger 83.2                                
12505440 Yakima River at Bridge Avenue at Granger 83.0                                
12505460 Granger Drain at mouth near Granger 82.8                                
462013120113700 Granger WWTP 82.8                                
12507560 Coulee Drain at North Satus Road near Satus 77.0                                
12507580 Yakima River above Satus Creek at RM 73 near Satus 73.0                                
12507584 Yakima River at Murray Road near Sunnyside 72.0                                
Mabton 12508620 Satus Creek at gage at Satus 69.6                                
12508680 Yakima River above Sulphur Creek at RM 61.3 near Mabton 61.3                                
12508850 Sulphur Creek Wasteway near Sunnyside 61.0                                
46140411959180 Mabton WWTP 59.5                                
12509052 Grandview WWTP 59.0                                
12509060 Yakima River at Mabton Siphon near Grandview 55.0                                
12509065 Yakima River at RM 53.3 near Grandview 53.3                                
12509070 Yakima River at RM 53.2 near Grandview 53.2                                
12509085 Yakima River at RM 52.5 near Grandview 52.5                                
12509090 Yakima River at RM 52.3 near Grandview 52.3                                
12509095 Yakima River at RM 52.1 near Grandview 52.1                                
12509100 Yakima River at RM 51.9 near Grandview 51.9                                
12509050 Yakima River at Euclid Bridge near Grandview 53.0                                
12509499 Chandler Canal at Bunn Road at Prosser 47.1                                
12509489 Yakima River at Prosser 47.0                                
Kiona 4612461119454700 Prosser WWTP 46.5                                
12509686 Yakima River near Whitstran 44.0                                
12509690 Yakima River above Snipes Creek and Spring Creek near Whitstran 43.0                                
12509710 Spring Creek at mouth near Whitstran 41.8                                
12509900 Yakima River above Chandler Pump near Whitstran 37.0                                
12510200 Corral Canyon Creek at mouth near Benton City 33.5                                
12510400 Yakima River at RM 31.3 above Benton City 31.3                                
12510500 Yakima River at Kiona 29.9                                
12510840 Yakima River at RM 21.8 near West Richland 21.8                                
12510845 Yakima River at RM 21.7 near West Richland 21.7                                
12510860 Yakima River at RM 21.1 near West Richland 21.1                                
12510865 Yakima River at RM 20.8 near West Richland 20.8                                
12510885 Yakima River at RM 20.2 near West Richland 20.2                                
12510890 Yakima River at RM 20.1 near West Richland 20.1                                
12510925 Yakima River at RM 19.1 near West Richland 19.1                                
12510950 Yakima River above Horn Rapids Dam near Richland 18.2                                
12511000 CID Canal at Horn Rapids Dam near West Richland 18.0                                
12511800 Yakima River at Van Geisan Bridge near Richland 8.4                                

Reach USGS site
identification No.		 Site name River mile Discrete measurements
2006
Plants Water quality Physical Field parameters
Chlorophyll a (planktonic) Periphyton biomass Macrophyte biomass Plant tissue nutrients Periphytomers Nutrients Total organic carbon Dissolved silica Alkalinity Biochemical oxygen demand Suspended sediment Flow Depth or velocity Light extinction coefficient Turbidity
Naches 12494450 Naches River at RM 12.2 near Naches 12.2                                
12498690 Naches River above Diversion Dam near Yakima 3.5                                
12498990 Naches River at 40th Avenue near Yakima 2.8                                
12499000 Naches River near North Yakima 1.0                                
Zillah 12487000 Yakima River at Selah Gap near North Yakima 117.0                                
12485002 Roza Canal at Powerhouse at Yakima 113.3                                
12500005 Yakima River above Roza Power Return near Yakima 113.0                                
12500100 Yakima River at Birchfield Road near Yakima 111.3                                
463447120275200 Yakima WWTP 111.0                                
12500445 Wide Hollow Creek near Mouth at Union Gap 107.4                                
12500420 Moxee Drain at Birchfield Road near Union Gap 107.3                                
12500450 Yakima River above Ahtanum Creek at Union Gap 107.3                                
12502500 Ahtanum Creek at Union Gap 106.9                                
12503950 Yakima River at Parker 104.0                                
12504490 Sunnyside Canal at Diversion near Parker 103.8                                
12505040 Yakima River at RM 103 near Wapato 103.0                                
12505045 Yakima River at RM 102.8 near Parker 102.8                                
12505050 Yakima River near Wapato 102.7                                
12505060 Yakima River at RM 102.6 near Parker 102.6                                
12505100 Yakima River at Donald Road at RM 100.3, at Donald 100.3                                
12505085 Yakima River at RM 100.8 near Donald 100.8                                
12505090 Yakima River at RM 100.7 near Donald 100.7                                
12505180 Roza Canal Wasteway No. 3 below Hwy 12 near Sawyer 98.0                                
12505270 Yakima River at RM 94.4 near Buena 95.0                                
12505300 Yakima River near Toppenish 93.1                                
12505310 Yakima River below Highway 22 near Toppenish 92.0                                
12505320 Yakima River at RM 91 at Zillah 91.2                                
1250532100 Yakima River below N. Myers Road Bridge right bank near Zillah 91.0                                
1250532110 Yakima River below N. Myers Road Bridge left bank near Zillah 91.0                                
1250532120 Yakima River at RM 90.9 near Zillah 90.9                                
1250532170 Yakima River at RM 90.6 near Zillah 90.6                                
1250532200 Yakima River at RM 90.4 near Zillah 90.4                                
1250532210 Yakima River at RM 90.3 near Zillah 90.3                                
1250532250 Yakima River at RM 90.1 near Zillah 90.1                                
1250532300 Yakima River at RM 89.8 near Zillah 89.8                                
1250532340 Yakima River at RM 89.5 near Zillah 89.5                                
462357120153200 Zillah WWTP 89.2                                
1250532400 Yakima River 3 feet from right bank at RM 89 near Zillah 89.0                                
1250532410 Yakima River 20 feet from right bank at RM 89 near Zillah 89.0                                
1250532420 Yakima River 50 feet from right bank at RM 89 near Zillah 89.0                                
12505325 Yakima River at RM 88.1 near Toppenish 88.1                                
1250532610 Yakima River at RM 88.0 near Zillah 88.0                                
1250532630 Yakima River at RM 87.9 near Zillah 87.9                                
1250532640 Yakima River at RM 87.7 near Zillah 87.7                                
1250532820 Yakima River at RM 86.8 near Zillah 86.8                                
1250532860 Yakima River at RM 86.7 near Zillah 86.7                                
1250532880 Yakima River at RM 86.6 near Zillah 86.6                                
12505330 Yakima River above E. Toppenish Drain near Granger 86.5                                
12505350 East Toppenish Drain at Wilson Road near Toppenish 86.0                                
12505410 Sub-Drain No. 35 at Parton Road near Granger 83.2                                
12505440 Yakima River at Bridge Avenue at Granger 83.0                                
12505460 Granger Drain at mouth near Granger 82.8                                
462013120113700 Granger WWTP 82.8                                
12507560 Coulee Drain at North Satus Road near Satus 77.0                                
12507580 Yakima River above Satus Creek at RM 73 near Satus 73.0                                
12507584 Yakima River at Murray Road near Sunnyside 72.0                                
Mabton 12508620 Satus Creek at gage at Satus 69.6                                
12508680 Yakima River above Sulphur Creek at Rm 61.3 near Mabton 61.3                                
12508850 Sulphur Creek Wasteway near Sunnyside 61.0                                
46140411959180 Mabton WWTP 59.5                                
12509052 Grandview WWTP 59.0                                
12509060 Yakima River at Mabton Siphon nr Grandview 55.0                                
12509065 Yakima River at RM 53.3 near Grandview 53.3                                
12509070 Yakima River at RM 53.2 near Grandview 53.2                                
12509085 Yakima River at RM 52.5 near Grandview 52.5                                
12509090 Yakima River at RM 52.3 near Grandview 52.3                                
12509095 Yakima River at RM 52.1 near Grandview 52.1                                
12509100 Yakima River at RM 51.9 near Grandview 51.9                                
12509050 Yakima River at Euclid Bridge near Grandview 53.0                                
12509499 Chandler Canal at Bunn Road at Prosser 47.1                                
12509489 Yakima River at Prosser 47.0                                
Kiona 4612461119454700 Prosser WWTP 46.5                                
12509686 Yakima River near Whitstran 44.0                                
12509690 Yakima River above Snipes Creek and Spring Creek near Whitstran 43.0                                
12509710 Spring Creek at mouth near Whitstran 41.8                                
12509900 Yakima River above Chandler Pump near Whitstran 37.0                                
12510200 Corral Canyon Creek at mouth near Benton City 33.5                                
12510400 Yakima River at RM 31.3 above Benton City 31.3                                
12510500 Yakima River at Kiona 29.9                                
12510840 Yakima River at RM 21.8 near West Richland 21.8                                
12510845 Yakima River at RM 21.7 near West Richland 21.7                                
12510860 Yakima River at RM 21.1 near West Richland 21.1                                
12510865 Yakima River at RM 20.8 near West Richland 20.8                                
12510885 Yakima River at RM 20.2 near West Richland 20.2                                
12510890 Yakima River at RM 20.1 near West Richland 20.1                                
12510925 Yakima River at RM 19.1 near West Richland 19.1                                
12510950 Yakima River above Horn Rapids Dam near Richland 18.2                                
12511000 CID Canal at Horn Rapids Dam near West Richland 18.0                                
12511800 Yakima River at Van Geisan Bridge near Richland 8.4                                

Reach USGS site
identification No.		 Site name River mile Discrete measurements
2007
Plants Water quality Physical Field parameters
Chlorophyll a (planktonic) Periphyton biomass Macrophyte biomass Plant tissue nutrients Periphytomers Nutrients Total organic carbon Dissolved silica Alkalinity Biochemical oxygen demand Suspended sediment Flow Depth or velocity Light extinction coefficient Turbidity
Naches 12494450 Naches River at RM 12.2 near Naches 12.2                                
12498690 Naches River above Diversion Dam near Yakima 3.5                                
12498990 Naches River at 40th Avenue near Yakima 2.8                                
12499000 Naches River near North Yakima 1.0                                
Zillah 12487000 Yakima River at Selah Gap near North Yakima 117.0                                
12485002 Roza Canal at Powerhouse at Yakima 113.3                                
12500005 Yakima River above Roza Power Return near Yakima 113.0                                
12500100 Yakima River at Birchfield Road near Yakima 111.3                                
463447120275200 Yakima WWTP 111.0                                
12500445 Wide Hollow Creek near Mouth at Union Gap 107.4                                
12500420 Moxee Drain at Birchfield Road near Union Gap 107.3                                
12500450 Yakima River above Ahtanum Creek at Union Gap 107.3                                
12502500 Ahtanum Creek at Union Gap 106.9                                
12503950 Yakima River at Parker 104.0                                
12504490 Sunnyside Canal at Diversion near Parker 103.8                                
12505040 Yakima River at RM 103 near Wapato 103.0                                
12505045 Yakima River at RM 102.8 near Parker 102.8                                
12505050 Yakima River near Wapato 102.7                                
12505060 Yakima River at RM 102.6 near Parker 102.6                                
12505100 Yakima River at Donald Road at RM 100.3, at Donald 100.3                                
12505085 Yakima River at RM 100.8 near Donald 100.8                                
12505090 Yakima River at RM 100.7 near Donald 100.7                                
12505180 Roza Canal Wasteway No. 3 below Hwy 12 near Sawyer 98.0                                
12505270 Yakima River at RM 94.4 near Buena 95.0                                
12505300 Yakima River near Toppenish 93.1                                
12505310 Yakima River below Highway 22 near Toppenish 92.0                                
12505320 Yakima River at RM 91 at Zillah 91.2                                
1250532100 Yakima River below N. Myers Road Bridge right bank near Zillah 91.0                                
1250532110 Yakima River below N. Myers Road Bridge left bank near Zillah 91.0                                
1250532120 Yakima River at RM 90.9 near Zillah 90.9                                
1250532170 Yakima River at RM 90.6 near Zillah 90.6                                
1250532200 Yakima River at RM 90.4 near Zillah 90.4                                
1250532210 Yakima River at RM 90.3 near Zillah 90.3                                
1250532250 Yakima River at RM 90.1 near Zillah 90.1                                
1250532300 Yakima River at RM 89.8 near Zillah 89.8                                
1250532340 Yakima River at RM 89.5 near Zillah 89.5                                
462357120153200 Zillah WWTP 89.2                                
1250532400 Yakima River 3 feet from right bank at RM 89 near Zillah 89.0                                
1250532410 Yakima River 20 feet from right bank at RM 89 near Zillah 89.0                                
1250532420 Yakima River 50 feet from right bank at RM 89 near Zillah 89.0                                
12505325 Yakima River at RM 88.1 near Toppenish 88.1                                
1250532610 Yakima River at RM 88.0 near Zillah 88.0                                
1250532630 Yakima River at RM 87.9 near Zillah 87.9                                
1250532640 Yakima River at RM 87.7 near Zillah 87.7                                
1250532820 Yakima River at RM 86.8 near Zillah 86.8                                
1250532860 Yakima River at RM 86.7 near Zillah 86.7                                
1250532880 Yakima River at RM 86.6 near Zillah 86.6                                
12505330 Yakima River above E. Toppenish Drain near Granger 86.5                                
12505350 East Toppenish Drain at Wilson Road near Toppenish 86.0                                
12505410 Sub-Drain No. 35 at Parton Road near Granger 83.2                                
12505440 Yakima River at Bridge Avenue at Granger 83.0                                
12505460 Granger Drain at mouth near Granger 82.8                                
462013120113700 Granger WWTP 82.8                                
12507560 Coulee Drain at North Satus Road near Satus 77.0                                
12507580 Yakima River above Satus Creek at RM 73 near Satus 73.0                                
12507584 Yakima River at Murray Road near Sunnyside 72.0                                
Mabton 12508620 Satus Creek at gage at Satus 69.6                                
12508680 Yakima River above Sulphur Creek at Rm 61.3 near Mabton 61.3                                
12508850 Sulphur Creek Wasteway near Sunnyside 61.0                                
46140411959180 Mabton WWTP 59.5                                
12509052 Grandview WWTP 59.0                                
12509060 Yakima River at Mabton Siphon nr Grandview 55.0                                
12509065 Yakima River at RM 53.3 near Grandview 53.3                                
12509070 Yakima River at RM 53.2 near Grandview 53.2                                
12509085 Yakima River at RM 52.5 near Grandview 52.5                                
12509090 Yakima River at RM 52.3 near Grandview 52.3                                
12509095 Yakima River at RM 52.1 near Grandview 52.1                                
12509100 Yakima River at RM 51.9 near Grandview 51.9                                
12509050 Yakima River at Euclid Bridge near Grandview 53.0                                
12509499 Chandler Canal at Bunn Road at Prosser 47.1                                
12509489 Yakima River at Prosser 47.0                                
Kiona 4612461119454700 Prosser WWTP 46.5                                
12509686 Yakima River near Whitstran 44.0                                
12509690 Yakima River above Snipes Creek and Spring Creek near Whitstran 43.0                                
12509710 Spring Creek at mouth near Whitstran 41.8                                
12509900 Yakima River above Chandler Pump near Whitstran 37.0                                
12510200 Corral Canyon Creek at mouth near Benton City 33.5                                
12510400 Yakima River at RM 31.3 above Benton City 31.3                                
12510500 Yakima River at Kiona 29.9                                
12510840 Yakima River at RM 21.8 near West Richland 21.8                                
12510845 Yakima River at RM 21.7 near West Richland 21.7                                
12510860 Yakima River at RM 21.1 near West Richland 21.1                                
12510865 Yakima River at RM 20.8 near West Richland 20.8                                
12510885 Yakima River at RM 20.2 near West Richland 20.2                                
12510890 Yakima River at RM 20.1 near West Richland 20.1                                
12510925 Yakima River at RM 19.1 near West Richland 19.1                                
12510950 Yakima River above Horn Rapids Dam near Richland 18.2                                
12511000 CID Canal at Horn Rapids Dam near West Richland 18.0                                
12511800 Yakima River at Van Geisan Bridge near Richland 8.4                                

Reach USGS site identification No. Site name River mile Continuous monitoring
2004 2005
March April May June July August September October March April May June July August September October
Naches 12494450 Naches River at RM 12.2 near Naches 12.2                                
12498690 Naches River above Diversion Dam near Yakima 3.5                                
12498990 Naches River at 40th Avenue near Yakima 2.8                                
12499000 Naches River near North Yakima 1.0                                
Zillah 12487000 Yakima River at Selah Gap near North Yakima 117.0                                
12485002 Roza Canal at Powerhouse at Yakima 113.3                                
12500005 Yakima River above Roza Power Return near Yakima 113.0                                
12500100 Yakima River at Birchfield Road near Yakima 111.3                                
463447120275200 Yakima WWTP 111.0                                
12500445 Wide Hollow Creek near Mouth at Union Gap 107.4                                
12500420 Moxee Drain at Birchfield Road near Union Gap 107.3                                
12500450 Yakima River above Ahtanum Creek at Union Gap 107.3                                
12502500 Ahtanum Creek at Union Gap 106.9                                
12503950 Yakima River at Parker 104.0                                
12504490 Sunnyside Canal at Diversion near Parker 103.8                                
12505040 Yakima River at RM 103 near Wapato 103.0                                
12505045 Yakima River at RM 102.8 near Parker 102.8                                
12505050 Yakima River near Wapato 102.7                                
12505060 Yakima River at RM 102.6 near Parker 102.6                                
12505100 Yakima River at Donald Rd at RM 100.3, at Donald 100.3                                
12505085 Yakima River at RM 100.8 near Donald 100.8                                
12505090 Yakima River at RM 100.7 near Donald 100.7                                
12505180 Roza Canal Wasteway No. 3 below Hwy 12 near Sawyer 98.0                                
12505270 Yakima River at RM 94.4 near Buena 95.0                                
12505300 Yakima River near Toppenish 93.1                                
12505310 Yakima River below Highway 22 near Toppenish 92.0                                
12505320 Yakima River at RM 91 at Zillah 91.2                                
1250532100 Yakima River below N. Myers Road Bridge right bank near Zillah 91.0                                
1250532110 Yakima River below N. Myers Road Bridge left bank near Zillah 91.0                                
1250532120 Yakima River at RM 90.9 near Zillah 90.9                                
1250532170 Yakima River at RM 90.6 near Zillah 90.6                                
1250532200 Yakima River at RM 90.4 near Zillah 90.4                                
1250532210 Yakima River at RM 90.3 near Zillah 90.3                                
1250532250 Yakima River at RM 90.1 near Zillah 90.1                                
1250532300 Yakima River at RM 89.8 near Zillah 89.8                                
1250532340 Yakima River at RM 89.5 near Zillah 89.5                                
462357120153200 Zillah WWTP 89.2                                
1250532400 Yakima River 3 feet from right bank at RM 89 near Zillah 89.0                                
1250532410 Yakima River 20 feet from right bank at RM 89 near Zillah 89.0                                
1250532420 Yakima River 50 feet from right bank at RM 89 near Zillah 89.0                                
12505325 Yakima River at RM 88.1 near Toppenish 88.1                                
1250532610 Yakima River at RM 88.0 near Zillah 88.0                                
1250532630 Yakima River at RM 87.9 near Zillah 87.9                                
1250532640 Yakima River at RM 87.7 near Zillah 87.7                                
1250532820 Yakima River at RM 86.8 near Zillah 86.8                                
1250532860 Yakima River at RM 86.7 near Zillah 86.7                                
1250532880 Yakima River at RM 86.6 near Zillah 86.6                                
12505330 Yakima River above E. Toppenish Drain near Granger 86.5                                
12505350 East Toppenish Drain at Wilson Road near Toppenish 86.0                                
12505410 Sub-Drain No. 35 at Parton Road near Granger 83.2                                
12505440 Yakima River at Bridge Avenue at Granger 83.0                                
12505460 Granger Drain at mouth near Granger 82.8                                
462013120113700 Granger WWTP 82.8                                
12507560 Coulee Drain at North Satus Road near Satus 77.0                                
12507580 Yakima River above Satus Creek at RM 73 near Satus 73.0                                
12507584 Yakima River at Murray Road near Sunnyside 72.0                                
Mabton 12508620 Satus Creek at gage at Satus 69.6                                
12508680 Yakima River above Sulphur Creek at RM 61.3 near Mabton 61.3                                
12508850 Sulphur Creek Wasteway near Sunnyside 61.0                                
46140411959180 Mabton WWTP 59.5                                
12509052 Grandview WWTP 59.0                                
12509060 Yakima River at Mabton Siphon near Grandview 55.0                                
12509065 Yakima River at RM 53.3 near Grandview 53.3                                
12509070 Yakima River at RM 53.2 near Grandview 53.2                                
12509085 Yakima River at RM 52.5 near Grandview 52.5                                
12509090 Yakima River at RM 52.3 near Grandview 52.3                                
12509095 Yakima River at RM 52.1 near Grandview 52.1                                
12509100 Yakima River at RM 51.9 near Grandview 51.9                                
12509050 Yakima River at Euclid Bridge near Grandview 53.0                                
12509499 Chandler Canal at Bunn Road at Prosser 47.1                                
12509489 Yakima River at Prosser 47.0                                
Kiona 4612461119454700 Prosser WWTP 46.5                                
12509686 Yakima River near Whitstran 44.0                                
12509690 Yakima River above Snipes Creek and Spring Creek near Whitstran 43.0                                
12509710 Spring Creek at mouth near Whitstran 41.8                                
12509900 Yakima River above Chandler Pump near Whitstran 37.0                                
12510200 Corral Canyon Creek at mouth near Benton City 33.5                                
12510400 Yakima River at RM 31.3 above Benton City 31.3                                
12510500 Yakima River at Kiona 29.9                                
12510840 Yakima River at RM 21.8 near West Richland 21.8                                
12510845 Yakima River at RM 21.7 near West Richland 21.7                                
12510860 Yakima River at RM 21.1 near West Richland 21.1                                
12510865 Yakima River at RM 20.8 near West Richland 20.8                                
12510885 Yakima River at RM 20.2 near West Richland 20.2                                
12510890 Yakima River at RM 20.1 near West Richland 20.1                                
12510925 Yakima River at RM 19.1 near West Richland 19.1                                
12510950 Yakima River above Horn Rapids Dam near Richland 18.2                                
12511000 CID Canal at Horn Rapids Dam nr West Richland 18.0                                
12511800 Yakima River at Van Geisan Bridge near Richland 8.4                                

Reach USGS site identification No. Site name River mile Continuous monitoring
2006 2007
March April May June July August September October March April May June July August September October
Naches
12494450 Naches River at RM 12.2 near Naches 12.2                                
12498690 Naches River above Diversion Dam near Yakima 3.5                                
12498990 Naches River at 40th Avenue near Yakima 2.8                                
12499000 Naches River near North Yakima 1.0                                
Zillah 12487000 Yakima River at Selah Gap near North Yakima 117.0                                
12485002 Roza Canal at Powerhouse at Yakima 113.3                                
12500005 Yakima River above Roza Power Return near Yakima 113.0                                
12500100 Yakima River at Birchfield Road near Yakima 111.3                                
463447120275200 Yakima WWTP 111.0                                
12500445 Wide Hollow Creek near Mouth at Union Gap 107.4                                
12500420 Moxee Drain at Birchfield Road near Union Gap 107.3                                
12500450 Yakima River above Ahtanum Creek at Union Gap 107.3                                
12502500 Ahtanum Creek at Union Gap 106.9                                
12503950 Yakima River at Parker 104.0                                
12504490 Sunnyside Canal at Diversion near Parker 103.8                                
12505040 Yakima River at RM 103 near Wapato 103.0                                
12505045 Yakima River at RM 102.8 near Parker 102.8                                
12505050 Yakima River near Wapato 102.7                                
12505060 Yakima River at RM 102.6 near Parker 102.6                                
12505100 Yakima R at Donald Rd at RM 100.3, at 
Donald 100.3                                
12505085 Yakima River at RM 100.8 near Donald 100.8                                
12505090 Yakima River at RM 100.7 near Donald. WA 100.7                                
12505180 Roza Canal Wasteway No. 3 below Hwy 12 near Sawyer 98.0                                
12505270 Yakima River at RM 94.4 near Buena 95.0                                
12505300 Yakima River near Toppenish 93.1                                
12505310 Yakima River below Highway 22 near Toppenish 92.0                                
12505320 Yakima River at RM 91 at Zillah 91.2                                
1250532100 Yakima River below N. Myers Road Bridge right bank near Zillah 91.0                                
1250532110 Yakima River below N. Myers Road Bridge left bank near Zillah 91.0                                
1250532120 Yakima River at RM 90.9 near Zillah 90.9                                
1250532170 Yakima River at RM 90.6 near Zillah 90.6                                
1250532200 Yakima River at RM 90.4 near Zillah 90.4                                
1250532210 Yakima River at RM 90.3 near Zillah 90.3                                
1250532250 Yakima River at RM 90.1 near Zillah 90.1                                
1250532300 Yakima River at RM 89.8 near Zillah 89.8                                
1250532340 Yakima River at RM 89.5 near Zillah 89.5                                
462357120153200 Zillah WWTP 89.2                                
1250532400 Yakima River 3 feet from right bank at RM 89 near Zillah 89.0                                
1250532410 Yakima River 20 feet from right bank at RM 89 near Zillah 89.0                                
1250532420 Yakima River 50 feet from right bank at RM 89 near Zillah 89.0                                
12505325 Yakima River at RM 88.1 near Toppenish 88.1                                
1250532610 Yakima River at RM 88.0 near Zillah 88.0                                
1250532630 Yakima River at RM 87.9 near Zillah 87.9                                
1250532640 Yakima River at RM 87.7 near Zillah 87.7                                
1250532820 Yakima River at RM 86.8 near Zillah 86.8                                
1250532860 Yakima River at RM 86.7 near Zillah 86.7                                
1250532880 Yakima River at RM 86.6 near Zillah 86.6                                
12505330 Yakima River above E. Toppenish Drain near Granger 86.5                                
12505350 East Toppenish Drain at Wilson Road near Toppenish 86.0                                
12505410 Sub-Drain No. 35 at Parton Road near Granger 83.2                                
12505440 Yakima River at Bridge Avenue at Granger 83.0                                
12505460 Granger Drain at mouth near Granger 82.8                                
462013120113700 Granger WWTP 82.8                                
12507560 Coulee Drain at North Satus Road near Satus 77.0                                
12507580 Yakima River above Satus Creek at RM 73 near Satus 73.0                                
12507584 Yakima River at Murray Road near Sunnyside 72.0                                
Mabton 12508620 Satus Creek at gage at Satus 69.6                                
12508680 Yakima River above Sulphur Creek at RM 61.3 near Mabton 61.3                                
12508850 Sulphur Creek Wasteway near Sunnyside 61.0                                
46140411959180 Mabton WWTP 59.5                                
12509052 Grandview WWTP 59.0                                
12509060 Yakima River at Mabton Siphon near Grandview 55.0                                
12509065 Yakima River at RM 53.3 near Grandview 53.3                                
12509070 Yakima River at RM 53.2 near Grandview 53.2                                
12509085 Yakima River at RM 52.5 near Grandview 52.5                                
12509090 Yakima River at RM 52.3 near Grandview 52.3                                
12509095 Yakima River at RM 52.1 near Grandview 52.1                                
12509100 Yakima River at RM 51.9 near Grandview 51.9                                
12509050 Yakima River at Euclid Bridge near Grandview 53.0                                
12509499 Chandler Canal at Bunn Road at Prosser 47.1                                
12509489 Yakima River at Prosser 47.0                                
Kiona 4612461119454700 Prosser WWTP 46.5                                
12509686 Yakima River near Whitstran 44.0                                
12509690 Yakima River above Snipes Creek and Spring Creek near Whitstran 43.0                                
12509710 Spring Creek at mouth near Whitstran 41.8                                
12509900 Yakima River above Chandler Pump near Whitstran 37.0                                
12510200 Corral Canyon Creek at mouth near Benton City 33.5                                
12510400 Yakima River at RM 31.3 above Benton City 31.3                                
12510500 Yakima River at Kiona 29.9                                
12510840 Yakima River at RM 21.8 near West Richland 21.8                                
12510845 Yakima River at RM 21.7 near West Richland 21.7                                
12510860 Yakima River at RM 21.1 near West Richland 21.1                                
12510865 Yakima River at RM 20.8 near West Richland 20.8                                
12510885 Yakima River at RM 20.2 near West Richland 20.2                                
12510890 Yakima River at RM 20.1 near West Richland 20.1                                
12510925 Yakima River at RM 19.1 near West Richland 19.1                                
12510950 Yakima River above Horn Rapids Dam near Richland 18.2                                
12511000 CID Canal at Horn Rapids Dam near West Richland 18.0                                
12511800 Yakima River at Van Geisan Bridge near Richland 8.4                                

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U.S. Geological Survey
2130 SW 5th Avenue
Portland, Oregon 97201
http://or.water.usgs.gov

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