DWORSHAK DAM - USACE

NPDES permit ID0028586 · Minor FEDERAL · effective, expires 2029-03-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file

EPA's record, 2025-09-01 to 2026-08-31

0values over a limit
6required values missing, on 6 form(s)
0of 113 forms filed late

Last period with anything received: 2026-07-31.

Reporting

Reports are due about 20 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (127)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigrade7E report only all year
001Temperature, water deg. centigradeMX DA AV report only all year
001Temperature, water deg. centigradeMO MAX report only all year
001Temperature, water deg. centigradeMO AVG report only all year
001Temperature, water deg. centigrade7E report only all year
001Temperature, water deg. centigradeMX DA AV report only all year
001Temperature, water deg. centigradeMO MAX report only all year
001Oxygen, dissolved [DO]INST MIN report only all year
001Oxygen, dissolved [DO]DAILY AV report only all year
001Oxygen, dissolved [DO]INST MAX report only all year
001pHINST MIN >= 6.5 SU all year
001pHINST MAX <= 9 SU all year
001Oil & GreaseDAILY MX <= 5 mg/L all year
001Oil & GreaseDAILY MX <= 5 mg/L all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Mercury, total [as Hg]INST MIN report only all year
001Mercury, total [as Hg]DAILY AV report only all year
001Mercury, total [as Hg]INST MAX report only all year
001MethylmercuryINST MIN report only all year
001MethylmercuryDAILY AV report only all year
001MethylmercuryINST MAX report only all year
002Temperature, water deg. centigrade7E report only all year
002Temperature, water deg. centigradeMX DA AV report only all year
002Temperature, water deg. centigradeMO MAX report only all year
002Temperature, water deg. centigradeMO AVG report only all year
002Temperature, water deg. centigrade7E report only all year
002Temperature, water deg. centigradeMX DA AV report only all year
002Temperature, water deg. centigradeMO MAX report only all year
002Oxygen, dissolved [DO]INST MIN report only all year
002Oxygen, dissolved [DO]DAILY AV report only all year
002Oxygen, dissolved [DO]INST MAX report only all year
002pHINST MIN >= 6.5 SU all year
002pHINST MAX <= 9 SU all year
002Oil & GreaseDAILY MX <= 5 mg/L all year
002Oil & GreaseDAILY MX <= 5 mg/L all year
002Flow, in conduit or thru treatment plantMO AVG report only all year
002Mercury, total [as Hg]INST MIN report only all year
002Mercury, total [as Hg]DAILY AV report only all year
002Mercury, total [as Hg]INST MAX report only all year
002MethylmercuryINST MIN report only all year
002MethylmercuryDAILY AV report only all year
002MethylmercuryINST MAX report only all year
003Temperature, water deg. centigrade7E report only all year
003Temperature, water deg. centigradeMX DA AV report only all year
003Temperature, water deg. centigradeMO MAX report only all year
003Temperature, water deg. centigradeMO AVG report only all year
003Temperature, water deg. centigrade7E report only all year
003Temperature, water deg. centigradeMX DA AV report only all year
003Temperature, water deg. centigradeMO MAX report only all year
003Oxygen, dissolved [DO]INST MIN report only all year
003Oxygen, dissolved [DO]DAILY AV report only all year
003Oxygen, dissolved [DO]INST MAX report only all year
003pHINST MIN >= 6.5 SU all year
003pHINST MAX <= 9 SU all year
003Oil & GreaseDAILY MX <= 5 mg/L all year
003Oil & GreaseDAILY MX <= 5 mg/L all year
003Flow, in conduit or thru treatment plantMO AVG report only all year
003Mercury, total [as Hg]INST MIN report only all year
003Mercury, total [as Hg]DAILY AV report only all year
003Mercury, total [as Hg]INST MAX report only all year
003MethylmercuryINST MIN report only all year
003MethylmercuryDAILY AV report only all year
003MethylmercuryINST MAX report only all year
004Temperature, water deg. centigrade7E report only all year
004Temperature, water deg. centigradeMX DA AV report only all year
004Temperature, water deg. centigradeMO MAX report only all year
004Temperature, water deg. centigradeMO AVG report only all year
004Temperature, water deg. centigrade7E report only all year
004Temperature, water deg. centigradeMX DA AV report only all year
004Temperature, water deg. centigradeMO MAX report only all year
004Oxygen, dissolved [DO]INST MIN report only all year
004Oxygen, dissolved [DO]DAILY AV report only all year
004Oxygen, dissolved [DO]INST MAX report only all year
004pHINST MIN >= 6.5 SU all year
004pHINST MAX <= 9 SU all year
004Oil & GreaseDAILY MX <= 5 mg/L all year
004Oil & GreaseDAILY MX <= 5 mg/L all year
004Flow, in conduit or thru treatment plantMO AVG report only all year
004Mercury, total [as Hg]INST MIN report only all year
004Mercury, total [as Hg]DAILY AV report only all year
004Mercury, total [as Hg]INST MAX report only all year
004MethylmercuryINST MIN report only all year
004MethylmercuryDAILY AV report only all year
004MethylmercuryINST MAX report only all year
005Temperature, water deg. centigrade7E report only all year
005Temperature, water deg. centigradeMX DA AV report only all year
005Temperature, water deg. centigradeMO MAX report only all year
005Temperature, water deg. centigradeMO AVG report only all year
005Temperature, water deg. centigrade7E report only all year
005Temperature, water deg. centigradeMX DA AV report only all year
005Temperature, water deg. centigradeMO MAX report only all year
005Oxygen, dissolved [DO]INST MIN report only all year
005Oxygen, dissolved [DO]DAILY AV report only all year
005Oxygen, dissolved [DO]INST MAX report only all year
005pHINST MIN >= 6.5 SU all year
005pHINST MAX <= 9 SU all year
005Oil & GreaseDAILY MX <= 5 mg/L all year
005Oil & GreaseDAILY MX <= 5 mg/L all year
005Flow, in conduit or thru treatment plantMO AVG report only all year
005Mercury, total [as Hg]INST MIN report only all year
005Mercury, total [as Hg]DAILY AV report only all year
005Mercury, total [as Hg]INST MAX report only all year
005MethylmercuryINST MIN report only all year
005MethylmercuryDAILY AV report only all year
005MethylmercuryINST MAX report only all year
006Temperature, water deg. centigrade7E report only all year
006Temperature, water deg. centigradeMX DA AV report only all year
006Temperature, water deg. centigradeMO MAX report only all year
006Temperature, water deg. centigradeMO AVG report only all year
006Temperature, water deg. centigrade7E report only all year
006Temperature, water deg. centigradeMX DA AV report only all year
006Temperature, water deg. centigradeMO MAX report only all year
006Oxygen, dissolved [DO]INST MIN report only all year
006Oxygen, dissolved [DO]DAILY AV report only all year
006Oxygen, dissolved [DO]INST MAX report only all year
006pHINST MIN >= 6.5 SU all year
006pHINST MAX <= 9 SU all year
006Oil & GreaseDAILY MX <= 5 mg/L all year
006Oil & GreaseDAILY MX <= 5 mg/L all year
006Flow, in conduit or thru treatment plantMO AVG report only all year
006Mercury, total [as Hg]INST MIN report only all year
006Mercury, total [as Hg]DAILY AV report only all year
006Mercury, total [as Hg]INST MAX report only all year
006MethylmercuryINST MIN report only all year
006MethylmercuryDAILY AV report only all year
006MethylmercuryINST MAX report only all year
SUMOil and grease visualINST MAX <= 1 N=0;Y=1 all year

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states