Clean Water Act discharge permit · NPDES MI0035734
MDNR-WOLF LAKE FISH HATCHERY, Mattawan, MI: NPDES MI0035734 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 4Pollutants under a numeric limit
- 2Pollutants with an effluent exceedance
MDNR-WOLF LAKE FISH HATCHERY, held by Michigan Department of Natural Resources, Fisheries Division, holds NPDES permit MI0035734, which discharges to Paw Paw River. EPA’s file records it issued September 30, 2014 and expiring October 1, 2017. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | MDNR-WOLF LAKE FISH HATCHERY |
|---|---|
| Permittee as filed | Michigan Department of Natural Resources, Fisheries Division |
| NPDES ID | MI0035734 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | September 30, 2014 |
| Expiration date | October 1, 2017 |
| Issuing agency | State |
| Address | Mattawan, MI 49071 |
| Receiving water | Paw Paw River |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | East Branch Paw Paw River (HUC 040500012402) |
| NAICS | 112511 – Finfish Farming and Fish Hatcheries |
| SIC | 0921 – Fish Hatcheries And Preserves |
| Other EPA IDs (FRS) | RCRA handler MIR000019604 |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 4Pollutants on file
- 4Under a numeric limit
- 4With a violation of any kind
- 2With an effluent exceedance
An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Phosphorus, total [as P] | 4 | 75 | 14 | March 31, 2025 | 325% over the limit |
| Solids, total suspended | 3 | 141 | 11 | March 31, 2025 | 1,673% over the limit |
| Flow, in conduit or thru treatment plant | 2 | 52 | 0 | ||
| Outfall observation,visual, y/n response | 1 | 29 | 0 |
Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.
Inspections, violations and enforcement
- 18Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| April 21, 2025 | Reporting Violations - Late Submittal of DMRs | ST6 |
| February 20, 2025 | Reporting Violations - Failure to Notify | ST6 |
| October 21, 2020 | Reporting Violations - Late Submittal of DMRs | ST6 |
| June 21, 2020 | Reporting Violations - Late Submittal of DMRs | ST6 |
| April 21, 2020 | Reporting Violations - Late Submittal of DMRs | ST6 |
| February 21, 2020 | Reporting Violations - Late Submittal of DMRs | ST6 |
| January 21, 2020 | Reporting Violations - Late Submittal of DMRs | ST6 |
| November 21, 2019 | Reporting Violations - Late Submittal of DMRs | ST6 |
| July 21, 2019 | Reporting Violations - Late Submittal of DMRs | ST6 |
| June 21, 2019 | Reporting Violations - Late Submittal of DMRs | ST6 |
| August 21, 2018 | Reporting Violations - Late Submittal of DMRs | ST6 |
| April 21, 2018 | Reporting Violations - Late Submittal of DMRs | ST6 |
| September 14, 2017 | Management Practice Violations - Failure to Maintain Records | ST6 |
| August 21, 2017 | Reporting Violations - Late Submittal of DMRs | ST6 |
| April 21, 2017 | Reporting Violations - Late Submittal of DMRs | ST6 |
| March 21, 2017 | Reporting Violations - Late Submittal of DMRs | ST6 |
| February 21, 2017 | Reporting Violations - Late Submittal of DMRs | ST6 |
| January 21, 2017 | Reporting Violations - Late Submittal of DMRs | ST6 |
Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.
Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.
Watch this permit
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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID MI0035734 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.