USDA/US FOREST SERVICE - COLUMBIA RIVER GORGE NAT'L SCENIC AREA

NPDES permit OR0040410 · Minor FEDERAL · effective, expires 2029-04-30 · EPA's file as of 2026-09-19

Check this month's numbers before you file
Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

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

0values over a limit
0required values missing, on 0 form(s)
0of 37 forms filed late

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

Reporting

Reports are due about 15 days after each monitoring period ends (the most common figure among OR permits in EPA's filings — check your permit).

Limits in force (43)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeMO AVG report only all year
001Temperature, water deg. centigradeDAILY MX report only all year
001Temperature, water deg. centigradeVALUE report only all year
001Temperature, water deg. centigradeMX 7D AV report only all year
001Thermal DischargeMO AVG <= 59.7 mkcal/day Jun, Jul, Aug, Sep
001Thermal DischargeDAILY MX report only Jun, Jul, Aug, Sep
001BOD, 5-day, 20 deg. CMO AVG <= 20 mg/L Jan, Jul, Aug, Sep, Oct, Nov, Dec
001BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L Feb, Mar, Apr, May, Jun
001BOD, 5-day, 20 deg. CMO AVG <= 5 lb/d Jan, Jul, Aug, Sep, Oct, Nov, Dec
001BOD, 5-day, 20 deg. CMO AVG <= 7.5 lb/d Feb, Mar, Apr, May, Jun
001BOD, 5-day, 20 deg. CDAILY MX <= 10 lb/d Jan, Jul, Aug, Sep, Oct, Nov, Dec
001BOD, 5-day, 20 deg. CDAILY MX <= 15 lb/d Feb, Mar, Apr, May, Jun
001BOD, 5-day, 20 deg. CMO AVG report only all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 30 mg/L Jan, Jul, Aug, Sep, Oct, Nov, Dec
001BOD, 5-day, 20 deg. CWKLY AVG <= 45 mg/L Feb, Mar, Apr, May, Jun
001BOD, 5-day, 20 deg. CWKLY AVG <= 7.5 lb/d Jan, Jul, Aug, Sep, Oct, Nov, Dec
001BOD, 5-day, 20 deg. CWKLY AVG <= 11 lb/d Feb, Mar, Apr, May, Jun
001pHDAILY MN >= 6 SU all year
001pHDAILY MX <= 8.5 SU all year
001pHMO MIN report only all year
001pHMO MAX report only all year
001pHVALUE report only all year
001Alkalinity, total [as CaCO3]QB report only all year
001Alkalinity, total [as CaCO3]VALUE report only all year
001Solids, total suspendedMO AVG <= 20 mg/L Jan, Jul, Aug, Sep, Oct, Nov, Dec
001Solids, total suspendedMO AVG <= 30 mg/L Feb, Mar, Apr, May, Jun
001Solids, total suspendedMO AVG <= 5 lb/d Jan, Jul, Aug, Sep, Oct, Nov, Dec
001Solids, total suspendedMO AVG <= 7.5 lb/d Feb, Mar, Apr, May, Jun
001Solids, total suspendedDAILY MX <= 10 lb/d Jan, Jul, Aug, Sep, Oct, Nov, Dec
001Solids, total suspendedDAILY MX <= 15 lb/d Feb, Mar, Apr, May, Jun
001Solids, total suspendedMO AVG report only all year
001Solids, total suspendedWKLY AVG <= 30 mg/L Jan, Jul, Aug, Sep, Oct, Nov, Dec
001Solids, total suspendedWKLY AVG <= 45 mg/L Feb, Mar, Apr, May, Jun
001Solids, total suspendedWKLY AVG <= 7.5 lb/d Jan, Jul, Aug, Sep, Oct, Nov, Dec
001Solids, total suspendedWKLY AVG <= 11 lb/d Feb, Mar, Apr, May, Jun
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001E. coliMO GEO <= 126 #/100mL all year
001E. coliDAILY MX <= 406 #/100mL all year
001E. coliMO GEO <= 126 #/100mL all year
001E. coliDAILY MX report only all year
001BOD, 5-day, percent removalMO AV MN >= 75 % all year
001Solids, suspended percent removalMO AV MN >= 75 % 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