SD GFP - Mcnenny Fish Hatchery

NPDES permit SD0000191 · Minor NON-POTW · administratively continued, expires 2024-06-30 · 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.

This permit expired on 2024-06-30 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

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

0values over a limit
0required values missing, on 0 form(s)
0of 25 forms filed late

Last period with anything received: 2026-08-31.

Reporting

Reports are due about 28 days after each monitoring period ends (the most common figure among SD permits in EPA's filings — check your permit).

Limits in force (24)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigrade30DA AVG report only all year
001Temperature, water deg. centigradeDAILY MX report only all year
001Flow rate30DA AVG report only all year
001Flow rateDAILY MX report only all year
001pHDAILY MN >= 6.6 SU all year
001pHDAILY MX <= 8.6 SU all year
001Solids, total suspended30DA AVG <= 10 mg/L all year
001Solids, total suspendedDAILY MX <= 17.5 mg/L all year
001Nitrogen, total [as N]DAILY MX report only all year
001Phosphorus, total [as P]DAILY MX report only all year
001Fish feed usedMO TOTAL report only all year
001Biomass, fishANNL TOT report only all year
001Floating solids, waste or visible foam-visualDAILY MX report only all year
002Temperature, water deg. centigrade30DA AVG report only all year
002Temperature, water deg. centigradeDAILY MX report only all year
002Flow rate30DA AVG report only all year
002Flow rateDAILY MX report only all year
002pHDAILY MN >= 6.6 SU all year
002pHDAILY MX <= 8.6 SU all year
002Solids, total suspended30DA AVG <= 10 mg/L all year
002Solids, total suspendedDAILY MX <= 17.5 mg/L all year
002Nitrogen, total [as N]DAILY MX report only all year
002Phosphorus, total [as P]DAILY MX report only all year
002Floating solids, waste or visible foam-visualDAILY MX 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