Scientific Investigations Report 2007–5186
U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2007–5186
Table 10. Mean annual discharge of total nitrogen, total phosphorus, and suspended sediment loads in the Willamette River, monitored Willamette River tributaries, and point sources discharging directly to the Willamette River, Oregon, water year 2000.
[Bold type indicates start of reach (see figure 16); shaded rows indicate monitoring site (see table 1); italicized type indicates point-source discharge source. Abbreviations: WA, Washington; OR, Oregon; ft3/s, cubic foot per second; –, not applicable]
| Map index No. | Site No. | Site name | River mile | Annual mean streamflow (ft3/s) | Total nitrogen load (pounds per day, estimated) | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Willamette River | Tribu-taries | Point source | Willamette River | Tributary inflowing | Willamette River | Tributary inflowing | Point source | |||||
| OR0020559 | City of Cottage Grove Wastewater Treatment Plant | – | – | 187 | – | 2.87 | – | – | 160 | |||
| OR0031224 | Eugene/Springfield Water Pollution Control Facility | – | – | 172 | – | 62.6 | – | – | 4,980 | |||
| 6 | 10376 | McKenzie River at Coburg Road | – | 172 | – | – | 5,070 | – | – | – | ||
| 7 | 10355 | Willamette River at Hwy 99E (Harrisburg) (reach 1) | 161 | – | – | 11,300 | – | 15,800 | – | – | ||
| OR0033405 | Fort James Operating Co. | – | – | 148 | – | 5.12 | – | – | 38.6 | |||
| OR0001074 | Pope & Talbot, Inc. | – | – | 147 | – | 17.6 | – | – | 133 | |||
| 8 | 11140 | Long Tom River at Stow Pit Road (Monroe) | – | 146 | – | 743 | – | 3,040 | ||||
| OR0000299 | Evanite Fiber Corp. | – | – | 20 | – | 1.02 | – | – | 33.8 | |||
| OR0026361 | City of Corvallis Wastewater Treatment Plant | – | – | 20 | – | 16.4 | – | – | 602 | |||
| 11 | 10350 | Willamette River at Albany (Eastbound Hwy 20 Bridge) (reach 2) | 119 | – | – | 14,200 | – | 38,100 | – | – | ||
| OR0028801 | City of Albany Wastewater Treatment Plant | – | – | 117 | – | 12.2 | – | – | 580 | |||
| OR0000442 | Weyerhaeuser Co. | – | – | 116 | – | 8.06 | – | – | 319 | |||
| OR0001112 | Tdy Industries, Inc. | – | – | 116 | – | 3.21 | – | – | 148 | |||
| 14 | 10555 | Willamette River at Marion Street (Salem) (reach 3) | 84 | – | 23,700 | – | 65,900 | – | – | |||
| OR0026409 | City of Salem Wastewater Treatment Plant | – | – | 83 | – | 64.6 | – | – | 5,920 | |||
| OR0032352 | City of Newberg Wastewater Treatment Plant | – | – | – | – | 4.34 | – | – | 346 | |||
| OR0000558 | SP Newsprint | – | – | – | – | 10.1 | – | – | 76.0 | |||
| 17 | 10640 | Pudding River at Hwy 211 (Woodburn) | – | 36 | – | – | 825 | – | 11,700 | – | ||
| OR0022764 | Wilsonville, City of | – | – | – | – | 2.99 | – | – | 154 | |||
| OR0020214 | Canby City Wastewater Treatment Plant | – | – | 34 | – | 1.60 | – | – | 127 | |||
| 19 | 3701002 | Tualatin River at Weiss Bridge | – | 28 | – | – | 1,410 | – | 16,600 | – | ||
| OR0000566 | Blue Heron Paper Co. | – | – | 28 | – | 4.57 | – | – | 58.0 | |||
| OR0000787 | West Linn Paper Co. | – | – | 28 | – | 4.57 | – | – | 34.5 | |||
| OR0031259 | Tri-City Service District | – | – | 25 | – | 12.6 | – | – | 994 | |||
| 18 | 13070 | Clackamas River at Mciver Park (upper boat ramp) | – | 25 | – | 2,830 | – | – | – | |||
| OR0026891 | Tryon Creek Wastewater Treatment Plant | – | – | 20 | – | 12.80 | – | 1,200 | ||||
| OR0026221 | Kellogg Creek Wastewater Treatment Plant | – | – | 19 | – | 12.60 | – | 1,000 | ||||
| 23 | 11321 | Johnson Creek at SE 17th Avenue (Portland) | – | 18 | – | – | 69 | – | 1,300 | – | ||
| 31 | 10611 | Willamette River at Hawthorne Bridge | 13 | – | – | 35,100 | – | 152,000 | – | – | ||
| 33 | 14211720 | Willamette River at Portland, OR | 13 | – | – | 35,100 | – | 160,000 | – | – | ||
| OR0001597 | Atofina Chemicals, Inc. | – | – | 7 | 12.5 | – | 128 | |||||
| 37 | 10332 | Willamette River at SP&S Railroad Bridge | 7 | – | – | 35,100 | – | 157,000 | – | – | ||
| Map index No. | Site No. | Site name | Total phosphorus load (pounds per day, estimated) | Suspended sediment load (tons per day, estimated) | |||||
|---|---|---|---|---|---|---|---|---|---|
| Willamette River | Tributary inflowing | Point source | Willamette River | Tributary inflowing | Point source | ||||
| OR0020559 | City of Cottage Grove Wastewater Treatment Plant | – | – | 53.9 | – | – | – | ||
| OR0031224 | Eugene/Springfield Water Pollution Control Facility | – | – | 1,130 | – | – | – | ||
| 6 | 10376 | Mckenzie River at Coburg Road | – | 1,200 | – | – | 88.1 | – | |
| 7 | 10355 | Willamette River at Hwy 99E (Harrisburg) (reach 1) | 3,980 | – | – | 227 | – | – | |
| OR0033405 | Fort James Operating Co. | – | – | 28.1 | – | – | – | ||
| OR0001074 | Pope & Talbot, Inc. | – | – | 60.4 | – | – | – | ||
| 8 | 11140 | Long Tom River at Stow Pit Road (Monroe) | – | 337 | – | – | 60.3 | – | |
| OR0000299 | Evanite Fiber Corp. | – | – | 3.51 | – | – | – | ||
| OR0026361 | City Of Corvallis Wastewater Treatment Plant | – | – | 1,650 | – | – | – | ||
| 11 | 10350 | Willamette River at Albany (Eastbound Hwy. 20 Bridge) (reach 2) | 6,140 | – | – | 521 | – | – | |
| OR0028801 | City of Albany Wastewater Treatment Plant | – | – | 237 | – | – | – | ||
| OR0000442 | Weyerhaeuser Co. | – | – | 68.2 | – | – | – | ||
| OR0001112 | Tdy Industries, Inc. | – | – | – | – | – | – | ||
| 14 | 10555 | Willamette River at Marion Street (Salem) (reach 3) | 9,360 | – | – | 1,050 | – | – | |
| OR0026409 | City of Salem Wastewater Treatment Plant | – | – | 1,220 | – | – | – | ||
| OR0032352 | City of Newberg Wastewater Treatment Plant | – | – | 81.6 | – | – | – | ||
| OR0000558 | Sp Newsprint | – | – | 701 | – | – | – | ||
| 17 | 10640 | Pudding River at Hwy. 211 (Woodburn) | – | 575 | – | – | 27.5 | – | |
| OR0022764 | Wilsonville, City of | – | – | 31.1 | – | – | – | ||
| OR0020214 | Canby City Wastewater Treatment Plant | – | – | 30.0 | – | – | – | ||
| 19 | 3701002 | Tualatin River at Weiss Bridge | – | 1,160 | – | – | – | ||
| OR0000566 | Blue Heron Paper Co. | – | – | 27.0 | – | – | – | ||
| OR0000787 | West Linn Paper Co. | – | – | 15.7 | – | – | – | ||
| OR0031259 | Tri-City Service District | – | – | 236 | – | – | – | ||
| 18 | 13070 | Clackamas River At Mciver Park (upper boat ramp) | – | 450 | – | 264 | |||
| OR0026891 | Tryon Creek Wastewater Treatment Plant | – | – | 143 | – | – | – | ||
| OR0026221 | Kellogg Creek Wastewater Treatment Plant | – | – | 236 | – | – | – | ||
| 23 | 11321 | Johnson Creek at SE 17th Avenue (Portland) | – | 47 | – | – | 3.74 | – | |
| 31 | 10611 | Willamette River at Hawthorne Bridge | 16,500 | – | – | 1,340 | – | – | |
| 33 | 14211720 | Willamette River at Portland, OR | 16,300 | – | 2,780 | – | |||
| OR0001597 | Atofina Chemicals, Inc. | – | 14.1 | – | – | ||||
| 37 | 10332 | Willamette River at SP&S Railroad Bridge | 18,100 | – | – | 1,440 | – | – | |
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