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Usdod; US Army Corps of Engineers Bonneville Dam

Federal facility (Electric Services), Cascade Locks, Oregon. NPDES permit OR0034355, in force until Jun 30, 2030. Last 12 months: over a limit 13 times (last May 2026), 1 of 228 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001A form A monthly (11 values), outfall 001B form A monthly (11 values), outfall 002A form A monthly (11 values), outfall 002B form A monthly (11 values), outfall 003A form A monthly (11 values), outfall 003B form A monthly (11 values), and 23 more forms
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 1 report late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

All 13 values over a limit
Period endingOutfallParameterReportedLimitOver by
February 2026010AOil & Grease, daily maximum6.76 mg/L≤ 5 mg/L35%
March 2026016pH, daily minimum6.7 SU≥ 7 SU—
April 2026016pH, daily minimum6.87 SU≥ 7 SU—
May 2026003BOil & Grease, daily maximum< 5.1 mg/L≤ 5 mg/L2%
May 2026004BOil & Grease, daily maximum< 5.1 mg/L≤ 5 mg/L2%
May 2026006BOil & Grease, daily maximum< 5.1 mg/L≤ 5 mg/L2%
May 2026007BOil & Grease, daily maximum< 5.1 mg/L≤ 5 mg/L2%
May 2026008BOil & Grease, daily maximum< 5.2 mg/L≤ 5 mg/L4%
May 2026010AOil & Grease, daily maximum< 5.1 mg/L≤ 5 mg/L2%
May 2026010BOil & Grease, daily maximum< 5.2 mg/L≤ 5 mg/L4%
May 2026012Oil & Grease, daily maximum< 5.1 mg/L≤ 5 mg/L2%
May 2026014Oil & Grease, daily maximum< 5.1 mg/L≤ 5 mg/L2%
May 2026017Oil & Grease, daily maximum< 5.1 mg/L≤ 5 mg/L2%

Limits in force (300)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. centigrademonthly averagereport only (deg C)all year001A
Temperature, water deg. centigradedaily maximumreport only (deg C)all year001A
Temperature, water deg. centigrademaximum 7-day averagereport only (deg C)all year001A
Thermal Dischargemonthly averagereport only (mkcal/day)Jun–Oct001A
pHdaily minimum≥ 7 SUall year001A
pHdaily maximum≤ 8.5 SUall year001A
Oil & Greasedaily maximum≤ 5 mg/Lall year001A
Oil & Greasedaily maximumreport only (mg/L)all year001A
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001A
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001A
Oil and grease visualvaluereport only (N=0;Y=1)all year001A
Temperature, water deg. centigrademonthly averagereport only (deg C)all year001B
Temperature, water deg. centigradedaily maximumreport only (deg C)all year001B
Temperature, water deg. centigrademaximum 7-day averagereport only (deg C)all year001B
Thermal Dischargemonthly averagereport only (mkcal/day)Jun–Oct001B
pHdaily minimum≥ 7 SUall year001B
pHdaily maximum≤ 8.5 SUall year001B
Oil & Greasedaily maximum≤ 5 mg/Lall year001B
Oil & Greasedaily maximumreport only (mg/L)all year001B
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001B
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001B
Oil and grease visualvaluereport only (N=0;Y=1)all year001B
Temperature, water deg. centigrademonthly averagereport only (deg C)all year002A
Temperature, water deg. centigradedaily maximumreport only (deg C)all year002A
Temperature, water deg. centigrademaximum 7-day averagereport only (deg C)all year002A
Thermal Dischargemonthly averagereport only (mkcal/day)Jun–Oct002A
pHdaily minimum≥ 7 SUall year002A
pHdaily maximum≤ 8.5 SUall year002A
Oil & Greasedaily maximum≤ 5 mg/Lall year002A
Oil & Greasedaily maximumreport only (mg/L)all year002A
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year002A
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year002A
Oil and grease visualvaluereport only (N=0;Y=1)all year002A
Temperature, water deg. centigrademonthly averagereport only (deg C)all year002B
Temperature, water deg. centigradedaily maximumreport only (deg C)all year002B
Temperature, water deg. centigrademaximum 7-day averagereport only (deg C)all year002B
Thermal Dischargemonthly averagereport only (mkcal/day)Jun–Oct002B
pHdaily minimum≥ 7 SUall year002B
pHdaily maximum≤ 8.5 SUall year002B
Oil & Greasedaily maximum≤ 5 mg/Lall year002B
Oil & Greasedaily maximumreport only (mg/L)all year002B
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year002B
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year002B
Oil and grease visualvaluereport only (N=0;Y=1)all year002B
Temperature, water deg. centigrademonthly averagereport only (deg C)all year003A
Temperature, water deg. centigradedaily maximumreport only (deg C)all year003A
Temperature, water deg. centigrademaximum 7-day averagereport only (deg C)all year003A
Thermal Dischargemonthly averagereport only (mkcal/day)Jun–Oct003A
pHdaily minimum≥ 7 SUall year003A
pHdaily maximum≤ 8.5 SUall year003A
Oil & Greasedaily maximum≤ 5 mg/Lall year003A
Oil & Greasedaily maximumreport only (mg/L)all year003A
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year003A
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year003A
Oil and grease visualvaluereport only (N=0;Y=1)all year003A
Temperature, water deg. centigrademonthly averagereport only (deg C)all year003B
Temperature, water deg. centigradedaily maximumreport only (deg C)all year003B
Temperature, water deg. centigrademaximum 7-day averagereport only (deg C)all year003B
Thermal Dischargemonthly averagereport only (mkcal/day)Jun–Oct003B
pHdaily minimum≥ 7 SUall year003B
pHdaily maximum≤ 8.5 SUall year003B
Oil & Greasedaily maximum≤ 5 mg/Lall year003B
Oil & Greasedaily maximumreport only (mg/L)all year003B
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year003B
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year003B
Oil and grease visualvaluereport only (N=0;Y=1)all year003B
Temperature, water deg. centigrademonthly averagereport only (deg C)all year004A
Temperature, water deg. centigradedaily maximumreport only (deg C)all year004A
Temperature, water deg. centigrademaximum 7-day averagereport only (deg C)all year004A
Thermal Dischargemonthly averagereport only (mkcal/day)Jun–Oct004A
pHdaily minimum≥ 7 SUall year004A
pHdaily maximum≤ 8.5 SUall year004A
Oil & Greasedaily maximum≤ 5 mg/Lall year004A
Oil & Greasedaily maximumreport only (mg/L)all year004A
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year004A
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year004A
Oil and grease visualvaluereport only (N=0;Y=1)all year004A
Temperature, water deg. centigrademonthly averagereport only (deg C)all year004B
Temperature, water deg. centigradedaily maximumreport only (deg C)all year004B
Temperature, water deg. centigrademaximum 7-day averagereport only (deg C)all year004B
Thermal Dischargemonthly averagereport only (mkcal/day)Jun–Oct004B
pHdaily minimum≥ 7 SUall year004B
pHdaily maximum≤ 8.5 SUall year004B
Oil & Greasedaily maximum≤ 5 mg/Lall year004B
Oil & Greasedaily maximumreport only (mg/L)all year004B
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year004B
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year004B
Oil and grease visualvaluereport only (N=0;Y=1)all year004B
Temperature, water deg. centigrademonthly averagereport only (deg C)all year005A
Temperature, water deg. centigradedaily maximumreport only (deg C)all year005A
Temperature, water deg. centigrademaximum 7-day averagereport only (deg C)all year005A
Thermal Dischargemonthly averagereport only (mkcal/day)Jun–Oct005A
pHdaily minimum≥ 7 SUall year005A
pHdaily maximum≤ 8.5 SUall year005A
Oil & Greasedaily maximum≤ 5 mg/Lall year005A
Oil & Greasedaily maximumreport only (mg/L)all year005A
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year005A
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year005A
Oil and grease visualvaluereport only (N=0;Y=1)all year005A
Temperature, water deg. centigrademonthly averagereport only (deg C)all year005B
Temperature, water deg. centigradedaily maximumreport only (deg C)all year005B
Temperature, water deg. centigrademaximum 7-day averagereport only (deg C)all year005B
Thermal Dischargemonthly averagereport only (mkcal/day)Jun–Oct005B
pHdaily minimum≥ 7 SUall year005B
pHdaily maximum≤ 8.5 SUall year005B
Oil & Greasedaily maximum≤ 5 mg/Lall year005B
Oil & Greasedaily maximumreport only (mg/L)all year005B
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year005B
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year005B
Oil and grease visualvaluereport only (N=0;Y=1)all year005B
Temperature, water deg. centigrademonthly averagereport only (deg C)all year006A
Temperature, water deg. centigradedaily maximumreport only (deg C)all year006A
Temperature, water deg. centigrademaximum 7-day averagereport only (deg C)all year006A
Thermal Dischargemonthly averagereport only (mkcal/day)Jun–Oct006A
pHdaily minimum≥ 7 SUall year006A
pHdaily maximum≤ 8.5 SUall year006A
Oil & Greasedaily maximum≤ 5 mg/Lall year006A
Oil & Greasedaily maximumreport only (mg/L)all year006A
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year006A
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year006A
Oil and grease visualvaluereport only (N=0;Y=1)all year006A
Temperature, water deg. centigrademonthly averagereport only (deg C)all year006B
Temperature, water deg. centigradedaily maximumreport only (deg C)all year006B
Temperature, water deg. centigrademaximum 7-day averagereport only (deg C)all year006B
Thermal Dischargemonthly averagereport only (mkcal/day)Jun–Oct006B
pHdaily minimum≥ 7 SUall year006B
pHdaily maximum≤ 8.5 SUall year006B
Oil & Greasedaily maximum≤ 5 mg/Lall year006B
Oil & Greasedaily maximumreport only (mg/L)all year006B
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year006B
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year006B
Oil and grease visualvaluereport only (N=0;Y=1)all year006B
Temperature, water deg. centigrademonthly averagereport only (deg C)all year007A
Temperature, water deg. centigradedaily maximumreport only (deg C)all year007A
Temperature, water deg. centigrademaximum 7-day averagereport only (deg C)all year007A
Thermal Dischargemonthly averagereport only (mkcal/day)Jun–Oct007A
pHdaily minimum≥ 7 SUall year007A
pHdaily maximum≤ 8.5 SUall year007A
Oil & Greasedaily maximum≤ 5 mg/Lall year007A
Oil & Greasedaily maximumreport only (mg/L)all year007A
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year007A
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year007A
Oil and grease visualvaluereport only (N=0;Y=1)all year007A
Temperature, water deg. centigrademonthly averagereport only (deg C)all year007B
Temperature, water deg. centigradedaily maximumreport only (deg C)all year007B
Temperature, water deg. centigrademaximum 7-day averagereport only (deg C)all year007B
Thermal Dischargemonthly averagereport only (mkcal/day)Jun–Oct007B
pHdaily minimum≥ 7 SUall year007B
pHdaily maximum≤ 8.5 SUall year007B
Oil & Greasedaily maximum≤ 5 mg/Lall year007B
Oil & Greasedaily maximumreport only (mg/L)all year007B
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year007B
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year007B
Oil and grease visualvaluereport only (N=0;Y=1)all year007B
Temperature, water deg. centigrademonthly averagereport only (deg C)all year008A
Temperature, water deg. centigradedaily maximumreport only (deg C)all year008A
Temperature, water deg. centigrademaximum 7-day averagereport only (deg C)all year008A
Thermal Dischargemonthly averagereport only (mkcal/day)Jun–Oct008A
pHdaily minimum≥ 7 SUall year008A
pHdaily maximum≤ 8.5 SUall year008A
Oil & Greasedaily maximum≤ 5 mg/Lall year008A
Oil & Greasedaily maximumreport only (mg/L)all year008A
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year008A
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year008A
Oil and grease visualvaluereport only (N=0;Y=1)all year008A
Temperature, water deg. centigrademonthly averagereport only (deg C)all year008B
Temperature, water deg. centigradedaily maximumreport only (deg C)all year008B
Temperature, water deg. centigrademaximum 7-day averagereport only (deg C)all year008B
Thermal Dischargemonthly averagereport only (mkcal/day)Jun–Oct008B
pHdaily minimum≥ 7 SUall year008B
pHdaily maximum≤ 8.5 SUall year008B
Oil & Greasedaily maximum≤ 5 mg/Lall year008B
Oil & Greasedaily maximumreport only (mg/L)all year008B
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year008B
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year008B
Oil and grease visualvaluereport only (N=0;Y=1)all year008B
Temperature, water deg. centigrademonthly averagereport only (deg C)all year009A
Temperature, water deg. centigradedaily maximumreport only (deg C)all year009A
Temperature, water deg. centigrademaximum 7-day averagereport only (deg C)all year009A
Thermal Dischargemonthly averagereport only (mkcal/day)Jun–Oct009A
pHdaily minimum≥ 7 SUall year009A
pHdaily maximum≤ 8.5 SUall year009A
Oil & Greasedaily maximum≤ 5 mg/Lall year009A
Oil & Greasedaily maximumreport only (mg/L)all year009A
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year009A
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year009A
Oil and grease visualvaluereport only (N=0;Y=1)all year009A
Temperature, water deg. centigrademonthly averagereport only (deg C)all year009B
Temperature, water deg. centigradedaily maximumreport only (deg C)all year009B
Temperature, water deg. centigrademaximum 7-day averagereport only (deg C)all year009B
Thermal Dischargemonthly averagereport only (mkcal/day)Jun–Oct009B
pHdaily minimum≥ 7 SUall year009B
pHdaily maximum≤ 8.5 SUall year009B
Oil & Greasedaily maximum≤ 5 mg/Lall year009B
Oil & Greasedaily maximumreport only (mg/L)all year009B
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year009B
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year009B
Oil and grease visualvaluereport only (N=0;Y=1)all year009B
Temperature, water deg. centigrademonthly averagereport only (deg C)all year010A
Temperature, water deg. centigradedaily maximumreport only (deg C)all year010A
Temperature, water deg. centigrademaximum 7-day averagereport only (deg C)all year010A
Thermal Dischargemonthly averagereport only (mkcal/day)Jun–Oct010A
pHdaily minimum≥ 7 SUall year010A
pHdaily maximum≤ 8.5 SUall year010A
Oil & Greasedaily maximum≤ 5 mg/Lall year010A
Oil & Greasedaily maximumreport only (mg/L)all year010A
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year010A
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year010A
Oil and grease visualvaluereport only (N=0;Y=1)all year010A
Temperature, water deg. centigrademonthly averagereport only (deg C)all year010B
Temperature, water deg. centigradedaily maximumreport only (deg C)all year010B
Temperature, water deg. centigrademaximum 7-day averagereport only (deg C)all year010B
Thermal Dischargemonthly averagereport only (mkcal/day)Jun–Oct010B
pHdaily minimum≥ 7 SUall year010B
pHdaily maximum≤ 8.5 SUall year010B
Oil & Greasedaily maximum≤ 5 mg/Lall year010B
Oil & Greasedaily maximumreport only (mg/L)all year010B
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year010B
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year010B
Oil and grease visualvaluereport only (N=0;Y=1)all year010B
Temperature, water deg. centigrademonthly averagereport only (deg C)all year011
Temperature, water deg. centigradedaily maximumreport only (deg C)all year011
Temperature, water deg. centigrademaximum 7-day averagereport only (deg C)all year011
Thermal Dischargemonthly averagereport only (mkcal/day)Jun–Oct011
pHdaily minimum≥ 7 SUall year011
pHdaily maximum≤ 8.5 SUall year011
Oil & Greasedaily maximum≤ 5 mg/Lall year011
Oil & Greasedaily maximumreport only (mg/L)all year011
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year011
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year011
Oil and grease visualvaluereport only (N=0;Y=1)all year011
Temperature, water deg. centigrademonthly averagereport only (deg C)all year012
Temperature, water deg. centigradedaily maximumreport only (deg C)all year012
Temperature, water deg. centigrademaximum 7-day averagereport only (deg C)all year012
Thermal Dischargemonthly averagereport only (mkcal/day)Jun–Oct012
pHdaily minimum≥ 7 SUall year012
pHdaily maximum≤ 8.5 SUall year012
Oil & Greasedaily maximum≤ 5 mg/Lall year012
Oil & Greasedaily maximumreport only (mg/L)all year012
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year012
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year012
Chlorine, total residualmonthly averagereport only (mg/L)all year012
Chlorine, total residualdaily maximumreport only (mg/L)all year012
Oil and grease visualvaluereport only (N=0;Y=1)all year012
Temperature, water deg. centigradedaily maximumreport only (deg C)all year012A
Thermal Dischargemonthly averagereport only (mkcal/day)Jun–Oct012A
pHdaily minimum≥ 7 SUall year012A
pHdaily maximum≤ 8.5 SUall year012A
Oil & Greasedaily maximum≤ 5 mg/Lall year012A
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year012A
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year012A
Chlorine, total residualmonthly averagereport only (mg/L)all year012A
Chlorine, total residualdaily maximumreport only (mg/L)all year012A
Temperature, water deg. centigrademonthly averagereport only (deg C)all year013
Temperature, water deg. centigradedaily maximumreport only (deg C)all year013
Temperature, water deg. centigrademaximum 7-day averagereport only (deg C)all year013
Thermal Dischargemonthly averagereport only (mkcal/day)Jun–Oct013
pHdaily minimum≥ 7 SUall year013
pHdaily maximum≤ 8.5 SUall year013
Oil & Greasedaily maximum≤ 5 mg/Lall year013
Oil & Greasedaily maximumreport only (mg/L)all year013
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year013
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year013
Oil and grease visualvaluereport only (N=0;Y=1)all year013
Temperature, water deg. centigrademonthly averagereport only (deg C)all year014
Temperature, water deg. centigradedaily maximumreport only (deg C)all year014
Temperature, water deg. centigrademaximum 7-day averagereport only (deg C)all year014
Thermal Dischargemonthly averagereport only (mkcal/day)Jun–Oct014
pHdaily minimum≥ 7 SUall year014
pHdaily maximum≤ 8.5 SUall year014
Oil & Greasedaily maximum≤ 5 mg/Lall year014
Oil & Greasedaily maximumreport only (mg/L)all year014
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year014
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year014
Oil and grease visualvaluereport only (N=0;Y=1)all year014
pHdaily minimum≥ 7 SUall year015
pHdaily maximum≤ 8.5 SUall year015
Temperature, water deg. centigrademonthly averagereport only (deg C)all year016
Temperature, water deg. centigradedaily maximumreport only (deg C)all year016
Temperature, water deg. centigrademaximum 7-day averagereport only (deg C)all year016
Thermal Dischargemonthly averagereport only (mkcal/day)Jun–Oct016
pHdaily minimum≥ 7 SUall year016
pHdaily maximum≤ 8.5 SUall year016
Oil & Greasedaily maximum≤ 5 mg/Lall year016
Oil & Greasedaily maximumreport only (mg/L)all year016
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year016
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year016
Oil and grease visualvaluereport only (N=0;Y=1)all year016
Temperature, water deg. centigrademonthly averagereport only (deg C)all year017
Temperature, water deg. centigradedaily maximumreport only (deg C)all year017
Temperature, water deg. centigrademaximum 7-day averagereport only (deg C)all year017
Thermal Dischargemonthly averagereport only (mkcal/day)Jun–Oct017
pHdaily minimum≥ 7 SUall year017
pHdaily maximum≤ 8.5 SUall year017
Oil & Greasedaily maximum≤ 5 mg/Lall year017
Oil & Greasedaily maximumreport only (mg/L)all year017
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year017
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year017
Oil and grease visualvaluereport only (N=0;Y=1)all year017
Thermal Dischargemonthly average≤ 2590 mkcal/dayJun–OctSUM

How strict are these limits?

Cited limits by parameter: Oregon's rules and the federal ones.

Same industry: the 8 Electric Services permits in Oregon.

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