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Michigan / Waters /

Lake Huron

Lake in Michigan, near Alpena, Bay City, Bay Port, Caseville, Cedarville, Charles, Cheboygan, De Tour Village, Drummond, East Tawas, Grace and Grindstone City

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. Dashed river stretches are estimates.

Check City of Harbor Beach'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

Estimated downstream stretches on Lake Huron

none with a current status

No downstream stretch has a current status here as of Nov 4, 2026, 8:25 PM EST. Check the reports below.

Estimated routes below wastewater outlets

13 routes below outlets
  • No current status shown Permit MI0020672, outlet 001 · 40 kilometres estimated · Estimate stops here
  • No current status shown Permit MI0020699, outlet 002 · 30.309 kilometres estimated · Estimate stops here
  • No current status shown Permit MI0020699, outlet SLD · 30.196 kilometres estimated · Estimate stops here
  • No current status shown Permit MI0026751, outlet 001 · 12.012 kilometres estimated · Estimate stops here
  • No current status shown Permit MI0026751, outlet SLD · 12.01 kilometres estimated · Estimate stops here
  • No current status shown Permit MI0057813, outlet 001 · 40 kilometres estimated · Estimate stops here
  • No current status shown Permit MI0058582, outlet 001 · 40 kilometres estimated · Estimate stops here
  • No current status shown Permit MIG570151, outlet 001 · 40 kilometres estimated · Estimate stops here
  • No current status shown Permit MIG580207, outlet 001 · 36.062 kilometres estimated · Estimate stops here
  • No current status shown Permit MIG580207, outlet SLD · 36.062 kilometres estimated · Estimate stops here
  • No current status shown Permit MIG580280, outlet 001 · 40 kilometres estimated · Estimate stops here
  • No current status shown Permit MIG580356, outlet 001 · 40 kilometres estimated · Estimate stops here
  • No current status shown Permit MIG580356, outlet 002 · 40 kilometres estimated · Estimate stops here

Source: DirtyWaterWatch estimates using U.S. Geological Survey river maps and flow measurements. The estimate stops at tidal water, the first lake or the distance limit.

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.
  • Caution: to
    1 report: City of Rogers City 1
    Show records

    The records are also in the report table on this page.

  • Discharge or advisory reported: to
    1 report: City of Rogers City 1
    Show records

    The records are also in the report table on this page.

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 Lake Huron in Michigan, last 12 months44 affecting this lake: 4 reported on Lake Huron; none arriving from upstreamDecember 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 Lake Huron in Michigan, last 12 months4Reported on Lake Huron in Michigan: 4 · Arriving from outfalls upstream, estimated: 0 (counted apart; together they need not equal the total)December 2025 to November 2026A day counts once however many discharges were under way on it.
  • Hours with a discharge or advisory status on Lake Huron in Michigan, last 12 months776Reported on Lake Huron in Michigan: 776 · Arriving from outfalls upstream, estimated: 0December 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 Lake Huron in Michigan8.5%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 Lake Huron in Michigan1Reported on Lake Huron in Michigan: 1 · Arriving from outfalls upstream, estimated: 0last 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

6 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.

Show table

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

4 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. 2 discharges reported to last more than 31 days are counted as 31 days.

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

Show table

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.

Show table

Reported discharges per year, 2001 to 2026

51 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.

Show table

Reported volume per year

Gallons (axis: K thousand, M million), summed from the 49 reports that gave a volume as a number (2 did not).

2 of 51 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.

Show table

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

4 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. 2 discharges reported to last more than 31 days are counted as 31 days.

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

Show table

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

4 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. 2 discharges reported to last more than 31 days are counted as 31 days.

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

Show table

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.

Show table

Reported discharges by wastewater outlet

Wastewater outlets with the most tracked discharge records: 10 of 23, 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.

Show table
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 Lake Huron

Reports linked to Lake Huron, newest first
WhenReportStatus
to 9:30 AMCity of Mackinac Island · 001A Lake Huron · Bypass · “63,000 gallons” report · notice · mapended
to Oct 16, 8:00 PMCity of Rogers City · Rogers City - Sewage lines throughout the city · SSO · 89,070 gallons report · notice · mapended
to Apr 16, 8:00 AMCity of Rogers City · From: Larke Avenue sanitary manhole - To: Larke Avenue storm drain manhole · SSO · 89,070 gallons report · notice · mapended
City of Rogers City · 001 single WWTP outfall · Bypass (earlier version) · 13.06 million gallons in all mapended
to 1:00 PMVillage of Port Sanilac · Outfall is a storm drain · SSO · 21,000 gallons report · notice · mapended
to 8:00 PMCity of Harbor Beach · Sanitary manhole · SSO · 1,000 gallons report · notice · mapended
to Sep 4 ’20, 8:00 AMMichigan DNR/Parks and Recreation Division · Anhern Drain - discharge pipe to Anhern Drain · Bypass · 45,900 gallons report · notice · mapended
to Jan 12 ’20, 5:30 AMVillage of Lexington · Storm Drain - Storm drain · SSO · 1.1 million gallons report · notice · mapended
to Dec 31 ’19, 1:00 PMCity of St. Ignace · Not applicable. - Leaking under lift station and seeping east toward Lake Huron · SSO · 10,000 gallons report · notice · mapended
to 10:15 PMVillage of Lexington · Washington St. Sewer Lift Station - Stormwater drain to Lake Huron · SSO · 1.59 million gallons report · notice · mapended
to 4:30 PMVillage of Lexington · East Dead End of Boynton - Storm drain · SSO · 600,000 gallons report · notice · mapended
to 4:15 PMLexington · main pumping station at Boyington and Washington - pump station · SSO · 75,000 gallons report · notice · mapended
to Feb 21 ’18, 5:00 PMLexington · main pumping station at Boyington and Washington - pump station · SSO · 900,000 gallons report · notice · mapended
to 5:00 PMLexington · main pumping station at Boyington and Washington - pump station · SSO · 45,000 gallons report · notice · mapended
to Apr 16 ’18, 10:00 PMLexington · main pumping station at Boyington and Washington - pump station · SSO · 270,000 gallons report · notice · mapended
to 10:00 AMForestville · Cedar st and Lake St intersection · SSO · 5,000 gallons report · notice · mapended
to Apr 7 ’17, 2:30 AMLexington · main pumping station at Boyington and Washington - pump station · SSO · 180,000 gallons report · notice · mapended
to 9:30 AMLexington · main pumping station at Boyington and Washington - pump station · SSO · 80,000 gallons report · notice · mapended
to 10:30 PMLexington · main pumping station at Boyington and Washington - pump station · SSO · 35,000 gallons report · notice · mapended
to 2:30 PMLexington · main pumping station at Boyington and Washington - pump station · SSO · 25,000 gallons report · notice · mapended
to 3:30 PMPort Austin · Spring Street Pump Station · SSO · 7,000 gallons report · notice · mapended
to Apr 12 ’13, 5:00 PMLexington · main pumping station at Boyington and Washington - pump station · SSO · volume not reported report · notice · mapended
to Sep 24 ’10, 10:00 AMSt. Ignace · Reagan St Lift Station - across from [house number removed] Cheeseman Rd, trans stat · SSO · 294,000 gallons report · notice · mapended
to Sep 3 ’10, 3:00 AMClark Township · Manhole #4 - Intersection of E. Griffin St and Lake Dr · SSO · 4,020 gallons report · notice · mapended

Sources: EGLE MiEnviro CSO/SSO List, retrieved 2026-11-05 01:07 UTC. A report's record id and times show when you hover or focus its "report" link.

Download these reports as CSV

Showing the latest 25 records of 52 records.See them all with filters.

All reports in Michigan by year: 2026 (5 here) · 2025 (2 here) · 2020 (2 here) · 2019 (3 here) · 2018 (2 here) · 2017 (4 here) · 2016 (2 here) · 2014 (1 here) · 2013 (2 here) · 2010 (3 here) · 2009 (1 here) · 2008 (1 here) · 2007 (1 here) · 2006 (4 here) · 2005 (4 here) · 2004 (7 here) · 2003 (1 here) · 2002 (4 here) · 2001 (3 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 Harbor Beach, City of Harrisville, City of Mackinac Island, City of Rogers City, City of St. Ignace, DeTour Village, Saginaw Chippewa Indian Tribe of Michigan, Village of Lexington, Village of Mackinaw City, Village of Port Sanilac.

Boat launches

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

Sources covering this water

51 records linked to this water, besides 1 earlier version or duplicate. Updated .