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Michigan / Waters /

Sycamore Creek

Stream in Michigan, past Lansing

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

This badge describes the water outline. Check the downstream stretches on the map and below for discharge statuses.

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 Mason'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 Sycamore Creek

640 estimated stretches from 2 outlets

Estimated downstream stretch — not checked by water sampling. Estimated by DirtyWaterWatch using U.S. Geological Survey river maps and flow measurements; not an official advisory area. This estimates water movement, not bacteria levels.

  • End not confirmed 0 to 0 kilometres below the outlet

    0 to 0 kilometres below the outlet · from City of Lansing WWTP

    Estimated travel time from outlet 026: about 1 hour. Estimate based on the river's average yearly flow; no current gauge reading was available.

  • End not confirmed 0 to 0 kilometres below the outlet

    0 to 0 kilometres below the outlet · from City of Lansing WWTP

    Estimated travel time from outlet 026: about 1 hour. Estimate based on the river's average yearly flow; no current gauge reading was available.

  • End not confirmed 0 to 0 kilometres below the outlet

    0 to 0 kilometres below the outlet · from City of Lansing WWTP

    Estimated travel time from outlet 026: about 1 hour. Estimate based on the river's average yearly flow; no current gauge reading was available.

  • End not confirmed 0 to 0 kilometres below the outlet

    0 to 0 kilometres below the outlet · from City of Lansing WWTP

    Estimated travel time from outlet 026: about 1 hour. Estimate based on the river's average yearly flow; no current gauge reading was available.

  • End not confirmed 0 to 0 kilometres below the outlet

    0 to 0 kilometres below the outlet · from City of Lansing WWTP

    Estimated travel time from outlet 026: about 1 hour. Estimate based on the river's average yearly flow; no current gauge reading was available.

  • End not confirmed 0 to 0 kilometres below the outlet

    0 to 0 kilometres below the outlet · from City of Lansing WWTP

    Estimated travel time from outlet 026: about 1 hour. Estimate based on the river's average yearly flow; no current gauge reading was available.

  • End not confirmed 0 to 0 kilometres below the outlet

    0 to 0 kilometres below the outlet · from City of Lansing WWTP

    Estimated travel time from outlet 026: about 1 hour. Estimate based on the river's average yearly flow; no current gauge reading was available.

  • End not confirmed 0 to 0 kilometres below the outlet

    0 to 0 kilometres below the outlet · from City of Lansing WWTP

    Estimated travel time from outlet 026: about 1 hour. Estimate based on the river's average yearly flow; no current gauge reading was available.

  • End not confirmed 0 to 0 kilometres below the outlet

    0 to 0 kilometres below the outlet · from City of Lansing WWTP

    Estimated travel time from outlet 026: about 1 hour. Estimate based on the river's average yearly flow; no current gauge reading was available.

  • End not confirmed 0 to 0 kilometres below the outlet

    0 to 0 kilometres below the outlet · from City of Lansing WWTP

    Estimated travel time from outlet 026: about 1 hour. Estimate based on the river's average yearly flow; no current gauge reading was available.

  • End not confirmed 0 to 0 kilometres below the outlet

    0 to 0 kilometres below the outlet · from City of Lansing WWTP

    Estimated travel time from outlet 026: about 1 hour. Estimate based on the river's average yearly flow; no current gauge reading was available.

  • End not confirmed 0 to 0 kilometres below the outlet

    0 to 0 kilometres below the outlet · from City of Lansing WWTP

    Estimated travel time from outlet 026: about 1 hour. Estimate based on the river's average yearly flow; no current gauge reading was available.

Showing 12 of 640 estimated stretches, nearest the outlets first.

Estimated routes below wastewater outlets

2 routes below outlets
  • Caution Permit MI0023400, outlet 026 · 40 kilometres estimated · Estimate stops at the 40-kilometre limit
  • Caution Permit MI0023400, outlet 032 · 40 kilometres estimated · Estimate stops at the 40-kilometre limit

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.

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 Sycamore Creek in Michigan, last 12 months1010 affecting this stretch: 10 reported on the Sycamore Creek; 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 the Sycamore Creek in Michigan, last 12 months5Reported on the Sycamore Creek in Michigan: 5 · 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 the Sycamore Creek in Michigan, last 12 months195Reported on the Sycamore Creek in Michigan: 195 · 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 the Sycamore Creek 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 Sycamore Creek 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.

This record covers the Sycamore Creek within Michigan; the same river upstream is a separate record.

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

24 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

200 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

293 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 93 reports that gave a volume as a number (200 did not).

200 of 293 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

200 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

200 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 62, 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 Sycamore Creek

Reports linked to Sycamore Creek, newest first
WhenReportStatus
Yes Communities · Culvert · Bypass · volume not reported report · notice · mapongoing
to 9:20 PMCity of Lansing · Cavanaugh Park - East of East Alden Square at the Sycamore Creek · SSO · 5,400 gallons report · notice · mapended
to 6:25 PMCity of Lansing · Cavanaugh Park - East of East Alden Square at the Sycamore Creek · SSO · 5,400 gallons report · notice · mapended
to 4:55 PMCity of Lansing · Cavanaugh Park - East of East Alden Square at the Sycamore Creek · SSO · 10,800 gallons report · notice · mapended
to 1:45 PMCity of Lansing · Cavanaugh Park - East of East Alden Square at the Sycamore Creek · SSO · 167,400 gallons report · notice · mapended
to 4:00 AMCity of Mason · City of Mason WWTP - oxidation ditch of the City of Mason WWTP · Bypass · 37,170 gallons report · notice · mapended
to Apr 5, 4:00 AMCity of Lansing · The Intersection of Lowcroft Avenue and West Mason Street - East of East Alden Square at the Sycamore Creek · SSO · 989,000 gallons report · notice · mapended
to Apr 5, 5:30 AMCity of Lansing · Cavanaugh Park - East of East Alden Square at the Sycamore Creek · SSO · 1.08 million gallons report · notice · mapended
to 3:06 AMCity of Lansing · [house number removed] Cavanaugh Road - East of East Alden Square at the Sycamore Creek · SSO · 72,900 gallons report · notice · mapended
to 3:25 AMCity of Lansing · The intersection of Lowcroft Ave and W Mason St - East of East Alden Square at the Sycamore Creek · SSO · 112,500 gallons report · notice · mapended
to 7:30 PMCity of Lansing · The intersection of Lowcroft Ave and W Mason St - East Alden Square at the Sycamore Creek · SSO · 189,000 gallons report · notice · mapended
to Apr 3 ’25, 4:00 AMCity of Lansing · Cavanaugh Park - East Alden Square at the Sycamore Creek · SSO · 657,000 gallons report · notice · mapended
to Apr 3 ’25, 3:00 AMCity of Lansing · Cavanaugh Park - East Alden Square at the Sycamore Creek · SSO · 1.22 million gallons report · notice · mapended
to Mar 31 ’25, 6:00 PMRHP Properties · Sherman Oaks Lift station - around the main lift station · SSO · 50,000 gallons report · notice · mapended
to 5:00 PMCity of Lansing · The Siphon Located near Tranter St and Rensen St - Weigman Drain that Drains to the Sycamore Creek · SSO · 13,500 gallons report · notice · mapended
to 9:20 AMCity of Lansing · The intersection of Lowcroft Ave and W Mason St - East Alden Square at the Sycamore Creek · SSO · 45,000 gallons report · notice · mapended
to 12:30 PMCity of Lansing · Cavanaugh Park - East Alden Square at the Sycamore Creek · SSO · 283,500 gallons report · notice · mapended
to 10:10 AMCity of Lansing · Cavanaugh Park - East Alden Square at the Sycamore Creek · SSO · 36,000 gallons report · notice · mapended
to 9:00 PMCity of Lansing · The intersection of Bel-Air Lane and Lowcroft Avenue - East Alden Square at the Sycamore Creek · SSO · 51,680 gallons report · notice · mapended
to 2:30 PMCity of Lansing · Cavanaugh Park - East Alden Square at the Sycamore Creek · SSO · 243,000 gallons report · notice · mapended
to 2:30 PMCity of Lansing · [house number removed] Schlee Street - East Alden Square at the Sycamore Creek · SSO · 297,000 gallons report · notice · mapended
to 8:15 PMCity of Mason · City of Mason, Wastewater Treatment Plant - 001 · Bypass · 1.8 million gallons report · notice · mapended
to 6:00 AMCity of Lansing · [house number removed] E. Holmes Road - East Alden Square at the Sycamore Creek · SSO · 54,000 gallons report · notice · mapended
to 11:30 PMCity of Mason · Sycamore Creek - 001 · Bypass · 3.89 million gallons report · notice · mapended
to 11:45 AMCity of Lansing · The intersection of East Holmes Road and South Cedar Street - East Alden Square at the Sycamore Creek · SSO · 216,000 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 397 records.See them all with filters.

All reports in Michigan by year: 2026 (10 here) · 2025 (4 here) · 2024 (4 here) · 2023 (3 here) · 2022 (3 here) · 2021 (4 here) · 2020 (13 here) · 2019 (13 here) · 2018 (1 here) · 2017 (1 here) · 2016 (1 here) · 2015 (1 here) · 2013 (4 here) · 2012 (11 here) · 2011 (10 here) · 2010 (1 here) · 2009 (4 here) · 2008 (6 here) · 2006 (140 here) · 2005 (139 here) · 2004 (21 here) · 2003 (1 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 Mason, Yes Communities, City of Lansing, RHP Properties.

Boat launches

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

Nearby waters

Sources covering this water

293 records linked to this water, besides 104 earlier versions or duplicates. Updated .