ROCK LAKE STATE TROUT HATCHERY

NPDES permit NM0030155 · Minor NON-POTW · effective, expires 2029-11-30 · 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)
1of 35 forms filed late

Last period with anything received: 2026-06-30.

Reporting

Reports are due about 28 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (98)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheitDAILY MX report only all year
001Temperature, water deg. fahrenheitDAILY MX report only all year
001pHMINIMUM >= 6.6 SU all year
001pHMINIMUM >= 6.6 SU all year
001pHMAXIMUM <= 9 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspended30DA AVG <= 10 mg/L all year
001Solids, total suspended30DA AVG <= 10 mg/L all year
001Solids, total suspendedDAILY MX <= 15 mg/L all year
001Solids, total suspendedDAILY MX <= 15 mg/L all year
001Solids, total suspended30DA AVG <= 466 lb/d all year
001Solids, total suspended30DA AVG <= 466 lb/d all year
001Solids, total suspendedDAILY MX <= 699 lb/d all year
001Solids, total suspendedDAILY MX <= 699 lb/d all year
001Solids, settleable30DA AVG <= .1 mL/L all year
001Solids, settleable30DA AVG <= .1 mL/L all year
001Solids, settleableDAILY MX <= .5 mL/L all year
001Solids, settleableDAILY MX <= .5 mL/L all year
001Nitrogen, total [as N]30DA AVG report only all year
001Nitrogen, total [as N]DAILY MX report only all year
001Nitrogen, total [as N]30DA AVG report only all year
001Nitrogen, total [as N]DAILY MX report only all year
001Phosphorus, total [as P]30DA AVG report only all year
001Phosphorus, total [as P]DAILY MX report only all year
001Phosphorus, total [as P]30DA AVG report only all year
001Phosphorus, total [as P]DAILY MX report only all year
001Flow, in conduit or thru treatment plant30DA AVG report only all year
001Flow, in conduit or thru treatment plant30DA AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Chlorine, total residualINST MAX <= 11 ug/L all year
001Chlorine, total residualINST MAX <= 11 ug/L all year
01BFlow, in conduit or thru treatment plant30DA AVG report only all year
01BFlow, in conduit or thru treatment plant30DA AVG report only all year
01BFlow, in conduit or thru treatment plantDAILY MX report only all year
01BFlow, in conduit or thru treatment plantDAILY MX report only all year
01BChlorine, total residualINST MAX <= 11 ug/L all year
01BChlorine, total residualINST MAX <= 11 ug/L all year
TX01Whole effluent toxicity - retest #148HR MIN report only all year
TX01Whole effluent toxicity - retest #148HR MIN report only all year
TX01Whole effluent toxicity - retest #1MO AV MN report only all year
TX01Whole effluent toxicity - retest #1MO AV MN report only all year
TX01Whole effluent toxicity - retest #248HR MIN report only all year
TX01Whole effluent toxicity - retest #248HR MIN report only all year
TX01Whole effluent toxicity - retest #2MO AV MN report only all year
TX01Whole effluent toxicity - retest #2MO AV MN report only all year
TX01Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulex48HR MIN report only all year
TX01Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulex48HR MIN report only all year
TX01Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulexMO AV MN report only all year
TX01Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulexMO AV MN report only all year
TX01LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelas48HR MIN report only all year
TX01LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelas48HR MIN report only all year
TX01LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelasMO AV MN report only all year
TX01LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelasMO AV MN report only all year
TX01NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulex48HR MIN report only all year
TX01NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulex48HR MIN report only all year
TX01NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulexMO AV MN report only all year
TX01NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulexMO AV MN report only all year
TX01NOAEC Lethal Static Renewal 48Hr acute Pimephales promelas48HR MIN report only all year
TX01NOAEC Lethal Static Renewal 48Hr acute Pimephales promelas48HR MIN report only all year
TX01NOAEC Lethal Static Renewal 48Hr acute Pimephales promelasMO AV MN report only all year
TX01NOAEC Lethal Static Renewal 48Hr acute Pimephales promelasMO AV MN report only all year
TX01Coef Of Var Static Renewal 48Hr Acute D. pulex48HR MIN report only all year
TX01Coef Of Var Static Renewal 48Hr Acute D. pulex48HR MIN report only all year
TX01Coef Of Var Static Renewal 48Hr Acute D. pulexMO AV MN report only all year
TX01Coef Of Var Static Renewal 48Hr Acute D. pulexMO AV MN report only all year
TX01Coef Of Var Static Renewal 48Hr Acute Pimephales promelas48HR MIN report only all year
TX01Coef Of Var Static Renewal 48Hr Acute Pimephales promelas48HR MIN report only all year
TX01Coef Of Var Static Renewal 48Hr Acute Pimephales promelasMO AV MN report only all year
TX01Coef Of Var Static Renewal 48Hr Acute Pimephales promelasMO AV MN report only all year
TX1Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX1Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubiaMO AV MN report only all year
TX1Pass/Fail Static Renewal 7Day Chronic Pimephales promelas7 DA MIN report only all year
TX1Pass/Fail Static Renewal 7Day Chronic Pimephales promelasMO AV MN report only all year
TX1Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX1Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubiaMO AV MN report only all year
TX1Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
TX1Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelasMO AV MN report only all year
TX1NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX1NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiaMO AV MN report only all year
TX1NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
TX1NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelasMO AV MN report only all year
TX1NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX1NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiaMO AV MN report only all year
TX1NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
TX1NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelasMO AV MN report only all year
TX1Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX1Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubiaMO AV MN report only all year
TX1Coef Of Var Static Renewal 7Day Chronic Pimephales promelas7 DA MIN report only all year
TX1Coef Of Var Static Renewal 7Day Chronic Pimephales promelasMO AV MN report only all year
TX1LOEC Lethal Survival Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX1LOEC Lethal Survival Static Renewal 7 Day Chronic Ceriodaphnia dubiaMO AV MN report only all year
TX1LOEC Lethal Survival Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
TX1LOEC Lethal Survival Static Renewal 7 Day Chronic Pimephales promelasMO AV MN report only all year
TX1LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX1LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Ceriodaphnia dubiaMO AV MN report only all year
TX1LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
TX1LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Pimephales promelasMO AV MN report only 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