DirtyWaterWatch Public waters. Public record.

Michigan / Waters /

Muskegon River

River in Michigan, past Big Rapids, Bridgeton, Croton, Evart, Houghton Lake, Meads Landing, Muskegon, Newaygo, Paris, Stanwood, Temple and Wolf Lake

Current status

No current status shown

No current status is assigned to this water outline. Check the water page for reports and any estimated downstream stretches. Why this status, and its source

Map sources: water outlines and launches from OpenBoatLaunch and OpenStreetMap contributors (Open Database License); wastewater outlets from EPA and state records; downstream estimates by DirtyWaterWatch using U.S. Geological Survey maps and flow data. Base map: OpenFreeMap and OpenMapTiles.

Square boat markers mark boat launches listed by OpenBoatLaunch.

Check City of Big Rapids's notices · Bookmark this water page and check it before each trip · Report a missing notice or error

About this status

No current status shown: no report we track sets a status on this water now; how statuses work. No status does not mean the water is safe. Follow posted signs and local health advice.

Sources checked: a public source (last successful check 2026-11-05 01:05 UTC); a public source (last successful check 2026-11-05 01:05 UTC); EGLE MiEnviro CSO/SSO List (last successful check 2026-11-05 01:08 UTC). Status by DirtyWaterWatch, updated 2026-11-05 01:25 UTC. · Updated

The last 90 days

Last 90 days, hour by hour. Red: discharge or advisory reported. Amber: caution. Hatched amber: end not confirmed. Plum: algal bloom advisory. Red or amber with a light line inside: beach advisory or caution. Dotted: monthly report (days with discharge, dates not given). Grey: no current status on the water outline. Purple hatching: source update overdue.

No discharge, advisory or caution periods are shown for this water in this time span. Check downstream stretches and source coverage.

Source: DirtyWaterWatch calculations using the reports named above and the published status rules. Updated 2026-11-05 01:25 UTC.

Reported discharges over time

  • Discharges affecting the Muskegon River in Michigan, last 12 months0December 2025 to November 2026Verified reports where available, else notices; revisions and duplicates counted once. Arriving discharges are estimated from modeled downstream reaches.
  • Days with a discharge affecting the Muskegon River in Michigan, last 12 months0December 2025 to November 2026A day counts once however many discharges were under way on it.
  • Hours with a discharge or advisory status on the Muskegon River in Michigan, last 12 months0December 2025 to November 2026Red hours by the map's rules: each discharge to its reported end plus the state's post-discharge period; overlapping hours count once.
  • 2026 season with a discharge or advisory status on the Muskegon River in Michigan0.0%May to October 2026Share of May 1 to October 31 hours with red status by the map's rules, of the hours a source covered.
  • Records behind the last-90-days strip for the Muskegon River in Michigan0last 90 daysEvery distinct record the strip lists for its red, yellow and unresolved hours, notices and unresolved reports included; counted as the strip counts them.

Combined sewer overflow (CSO): sewage mixed with rainwater spills from a shared sewer system. Sanitary sewer overflow (SSO): sewage spills from a sewer meant to carry sewage separately from rainwater. Treatment bypass: wastewater skips one or more treatment steps. Blended discharge: wastewater that skipped some treatment is mixed with treated wastewater. Outfall: a pipe or outlet where wastewater enters a water body.

Reported discharges per month

2 reported discharges, January 2022 to November 2026.

  • Combined sewer overflow
  • Sanitary sewer overflow
  • Treatment bypass, blended or other

Source: mi-egle-mienviro-cso-sso-list. Records cover January 1, 2022 to November 4, 2026.

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Hours with a discharge or advisory status per month

Hours when this water had a discharge or advisory status under DirtyWaterWatch rules.

  • Discharge or advisory reported

2 discharge reports have no end time and are not marked ongoing; under DirtyWaterWatch rules they show caution, not a discharge or advisory status, and add no hours here.

Source: mi-egle-mienviro-cso-sso-list. Records cover January 1, 2001 to November 4, 2026.

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Days with a reported discharge per month

A day counts when any counted discharge was under way on it, from its start to its reported end in Eastern Time; a report with no end counts its start day.

Source: mi-egle-mienviro-cso-sso-list. Records cover January 1, 2022 to November 4, 2026.

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Reported discharges per year, 2001 to 2026

15 reported discharges, 2001 to 2026.

  • Combined sewer overflow
  • Sanitary sewer overflow
  • Treatment bypass, blended or other

Source: mi-egle-mienviro-cso-sso-list. Records cover January 1, 2001 to November 4, 2026.

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Reported volume per year

Gallons (axis: K thousand, M million), summed from the 14 reports that gave a volume as a number (1 did not).

1 of 15 discharge reports gave no volume as a number; only numbers are summed.

Source: mi-egle-mienviro-cso-sso-list. Records cover January 1, 2001 to November 4, 2026.

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Hours with a discharge or advisory status per year

Hours with a discharge or advisory status each year under DirtyWaterWatch rules; 2026 to date.

  • Discharge or advisory reported

2 discharge reports have no end time and are not marked ongoing; under DirtyWaterWatch rules they show caution, not a discharge or advisory status, and add no hours here.

Source: mi-egle-mienviro-cso-sso-list. Records cover January 1, 2001 to November 4, 2026.

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Share of the May to October season with a discharge or advisory status

Share of the hours from May 1 to October 31 with a discharge or advisory status under DirtyWaterWatch rules.

  • Discharge or advisory reported

2 discharge reports have no end time and are not marked ongoing; under DirtyWaterWatch rules they show caution, not a discharge or advisory status, and add no hours here.

Source: mi-egle-mienviro-cso-sso-list. Records cover January 1, 2001 to November 4, 2026.

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Reported discharges by calendar month, all years

Every counted discharge report, by the calendar month it began.

Months are summed over every year a tracked source covers; the table gives the number of years behind each month.

Source: mi-egle-mienviro-cso-sso-list. Records cover January 1, 2001 to November 4, 2026.

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Reported discharges by wastewater outlet

Wastewater outlets with the most tracked discharge records: 10 of 11, all years. Counts depend on reporting coverage and do not measure legal compliance or harm.

Source: mi-egle-mienviro-cso-sso-list. Records cover January 1, 2001 to November 4, 2026.

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How these charts are counted

We count each discharge once. Where a source publishes notices and confirmed reports, we use confirmed reports for an operator's month when available; otherwise we use notices. We combine revisions and exclude duplicate state reports copied by the U.S. Environmental Protection Agency (EPA). Monthly and yearly totals appear separately. Status hours follow this site's rules. Shaded gaps mean missing coverage, not zero discharges.

  • U.S. Environmental Protection Agency sewer overflow records: records from May 3, 2022 to the latest update (limited records)
  • mi-egle-mienviro-cso-sso-list: records from January 1, 2001 to the latest update

Reports linked to Muskegon River

Reports linked to Muskegon River, newest first
WhenReportStatus
to 9:15 AMCity of Big Rapids · City of Big Rapids WWTP - WWTP effluent outfall · Bypass · 82,000 gallons in all mapended
to Aug 25 ’21, 12:05 AMCity of Big Rapids · 001 Effluent Discharge from Plant. UV disinfectant process failed. · Bypass · 60,000 gallons report · notice · mapended
to Aug 29 ’20, 5:00 AMCity of Big Rapids · Waste Water Treatment Plant CB #8 - [house number removed] River Street, Big Rapids, MI 49307 · SSO · 2,400 gallons report · notice · mapended
to Mar 3 ’07, 8:21 AMMuskegon County · B station · SSO · 260,000 gallons report · notice · mapended
to Nov 10 ’05, 6:00 AMBig Rapids · [house number removed] River Street · SSO · 50,000 gallons report · notice · mapended
Big Rapids · Big Rapids Township Pump Station · SSO · volume not reported report · notice · mapended
to 5:00 PMBig Rapids · Corner of Morrison and S. State, manhole 359 · SSO · 1,000 gallons report · notice · mapended
to 12:15 AMMuskegon County · B station · SSO · 100 gallons report · notice · mapended
to 3:20 PMMuskegon County · B station · SSO · 61,000 gallons report · notice · mapended
to Sep 17 ’02, 7:00 AMBig Rapids · Unauthorized opening in old chlorine contact chamber · SSO · 450,000 gallons report · notice · mapended
to Jun 18 ’02, 8:00 AMEvart · [house number removed] 100th Avenue - Manhole West of Lift Station #3 · SSO · 200 gallons report · notice · mapended
to 6:00 AMBig Rapids · [house number removed] N. Warren, West of Hemlock Park - plugged sewer plus rainfall · SSO · 1,000 gallons report · notice · mapended
to Jul 9 ’01, 5:30 AMBig Rapids · Wooded area immediately north of WWTP · SSO · 65,000 gallons report · notice · mapended
Muskegon County · B station · SSO · 10,000 gallons report · notice · mapended

Sources: EGLE MiEnviro CSO/SSO List, retrieved 2026-11-04 15:09 UTC. A report's record id and times show when you hover or focus its "report" link.

Download these reports as CSV

All reports in Michigan by year: 2023 (2 here) · 2021 (1 here) · 2020 (1 here) · 2007 (1 here) · 2005 (1 here) · 2004 (2 here) · 2002 (5 here) · 2001 (2 here)

Wastewater outlets on this water

No wastewater outlet in our records is linked to this water.

Sewer operators listed for this water: City of Big Rapids, City of Newaygo, Houghton Lake Sewer Authority, Muskegon County Board of Public Works.

Boat launches

Source: OpenBoatLaunch launch records (public agency data and OpenStreetMap, Open Database License). · Muskegon River on OpenBoatLaunch

Nearby waters

Sources covering this water

15 records linked to this water. Updated .