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Illinois / Waters /

Cedar Creek

Stream in Illinois, past Bald Bluff, Coldbrook, Galesburg, Galesburg City, Hale, Henderson, Monmouth and Sumner

Current status

Discharge possible: heavy rain, no report received

Radar shows that recent rain at a combined sewer system's outlets has reached the amount set for that system, and its operator has not reported a discharge. It reads "discharge likely" where the amount is the one at which that system has discharged before, or a rain trigger its state publishes, and "discharge possible" where only this site's default of 0.1 inch applies. This is an estimate, not a report. This status since . 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.

Solid dots mark combined sewer outfalls. Ringed dots mark treatment plant outfalls. A yellow ring with a dashed edge means discharge likely or possible: heavy rain, no report received. Dashed river stretches are estimates.

Check Galesburg Sanitary District's notices · Bookmark this water page and check it before each trip · Report a missing notice or error

About this status

Discharge possible: heavy rain, no report received: heavy rain at a sewer operator's outlets reached this site's default amount, and no report received; shown for 48 hours after the rain (site rule). 16.9 in of rain fell in the 24 hours to Nov 6, 2026, 2:00 AM CST at Monmouth Main STP's outfalls (NOAA radar estimate).

Source: NOAA National Weather Service, MRMS radar-only rainfall estimate, valid Nov 6, 2026, 2:00 AM CST, retrieved 2026-11-06 08:57 UTC; threshold: site default; rule: How it works, discharge likely or possible. · Updated

Estimated downstream stretches on Cedar Creek

none from a report; 40 routes below outlets with a status

No stretch below a reported discharge has a current status here as of Nov 6, 2026, 3:03 AM CST. The routes below wastewater outlets carry the status shown on each.

Estimated routes below wastewater outlets

40 routes below outlets
  • Caution Permit IL0021253, outlet 002 · 40 kilometres estimated · Estimate stops at the 40-kilometre limit
  • Caution Permit IL0021253, outlet 003 · 40 kilometres estimated · Estimate stops at the 40-kilometre limit
  • Caution Permit IL0021253, outlet A04 · 40 kilometres estimated · Estimate stops at the 40-kilometre limit
  • Caution Permit IL0021253, outlet B04 · 40 kilometres estimated · Estimate stops at the 40-kilometre limit
  • Caution Permit IL0021253, outlet C04 · 40 kilometres estimated · Estimate stops at the 40-kilometre limit
  • Caution Permit IL0021253, outlet D04 · 40 kilometres estimated · Estimate stops at the 40-kilometre limit
  • Caution Permit IL0021253, outlet E04 · 40 kilometres estimated · Estimate stops at the 40-kilometre limit
  • Caution Permit IL0023141, outlet 001 · 40 kilometres estimated · Estimate stops at the 40-kilometre limit
  • Caution Permit IL0023141, outlet 003 · 40 kilometres estimated · Estimate stops at the 40-kilometre limit
  • Caution Permit IL0023141, outlet 004 · 40 kilometres estimated · Estimate stops at the 40-kilometre limit
  • Caution Permit IL0023141, outlet 005 · 40 kilometres estimated · Estimate stops at the 40-kilometre limit
  • Caution Permit IL0023141, outlet 006 · 40 kilometres estimated · Estimate stops at the 40-kilometre limit
  • Caution Permit IL0023141, outlet 007 · 40 kilometres estimated · Estimate stops at the 40-kilometre limit
  • Caution Permit IL0023141, outlet 008 · 40 kilometres estimated · Estimate stops at the 40-kilometre limit
  • Caution Permit IL0023141, outlet 009 · 40 kilometres estimated · Estimate stops at the 40-kilometre limit
  • Caution Permit IL0023141, outlet 010 · 40 kilometres estimated · Estimate stops at the 40-kilometre limit
  • Caution Permit IL0023141, outlet 012 · 40 kilometres estimated · Estimate stops at the 40-kilometre limit
  • Caution Permit IL0023141, outlet 013 · 40 kilometres estimated · Estimate stops at the 40-kilometre limit
  • Caution Permit IL0023141, outlet 014 · 40 kilometres estimated · Estimate stops at the 40-kilometre limit
  • Caution Permit IL0023141, outlet 015 · 40 kilometres estimated · Estimate stops at the 40-kilometre limit
  • Caution Permit IL0023141, outlet 017 · 40 kilometres estimated · Estimate stops at the 40-kilometre limit
  • Caution Permit IL0023141, outlet 018 · 40 kilometres estimated · Estimate stops at the 40-kilometre limit
  • Caution Permit IL0023141, outlet 019 · 40 kilometres estimated · Estimate stops at the 40-kilometre limit
  • Caution Permit IL0023141, outlet 020 · 40 kilometres estimated · Estimate stops at the 40-kilometre limit
  • Caution Permit IL0023141, outlet 021 · 40 kilometres estimated · Estimate stops at the 40-kilometre limit
  • Caution Permit IL0023141, outlet 022 · 40 kilometres estimated · Estimate stops at the 40-kilometre limit
  • Caution Permit IL0023141, outlet 023 · 40 kilometres estimated · Estimate stops at the 40-kilometre limit
  • Caution Permit IL0023141, outlet 024 · 40 kilometres estimated · Estimate stops at the 40-kilometre limit
  • Caution Permit IL0023141, outlet 025 · 40 kilometres estimated · Estimate stops at the 40-kilometre limit
  • Caution Permit IL0023141, outlet 026 · 40 kilometres estimated · Estimate stops at the 40-kilometre limit
  • Caution Permit IL0023141, outlet 028 · 40 kilometres estimated · Estimate stops at the 40-kilometre limit
  • Caution Permit IL0023141, outlet 030 · 40 kilometres estimated · Estimate stops at the 40-kilometre limit
  • Caution Permit IL0023141, outlet 031 · 39.999 kilometres estimated · Estimate stops here
  • Caution Permit IL0023141, outlet 032 · 39.312 kilometres estimated · Estimate stops here
  • Caution Permit IL0023141, outlet 033 · 39.106 kilometres estimated · Estimate stops here
  • Caution Permit IL0023141, outlet 034 · 40 kilometres estimated · Estimate stops at the 40-kilometre limit
  • Caution Permit IL0023141, outlet 035 · 40 kilometres estimated · Estimate stops at the 40-kilometre limit
  • Caution Permit IL0023141, outlet 037 · 40 kilometres estimated · Estimate stops at the 40-kilometre limit
  • Caution Permit IL0023141, outlet 043 · 40 kilometres estimated · Estimate stops at the 40-kilometre limit
  • Caution Permit IL0023141, outlet 047 · 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: a status resting on a source that could not be checked on schedule.
  • Discharge likely or possible: heavy rain, no report received: to the latest update
    Radar estimate, no report received: heavy rain at the outlets of Galesburg Sanitary District, Monmouth Main STP

Source: DirtyWaterWatch calculations using the reports named above and the published status rules. Updated 2026-11-06 09:03 UTC.

Reported discharges over time

  • Discharges affecting the Cedar Creek in Illinois, 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.
  • Records behind the last-90-days strip for the Cedar Creek in Illinois2Reported on the Cedar Creek in Illinois: 0 · Arriving from outfalls upstream, estimated: 0 · Other records (rain-likely and similar): 2last 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 Cedar Creek within Illinois; 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.

Reported discharges per month

0 reported discharges, January 2022 to November 2026.

  • Combined sewer overflow
  • Sanitary sewer overflow
  • Treatment bypass, blended or other
  • Incomplete source coverage
Limited records

Sources: U.S. Environmental Protection Agency sewer overflow records; il-mwrd-lake-michigan-reversals. Records cover January 1, 2022 to November 6, 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)
  • il-mwrd-lake-michigan-reversals: records from March 4, 1985 to July 3, 2023

Reports linked to Cedar Creek

No reports are linked to this water yet. Check local notices and our source coverage.

Wastewater outlets on this water

Outfall: a pipe or outlet where wastewater enters a water body.

Combined sewer outfalls

33 outfalls · discharge possible now at 33

Discharge possible: heavy rain, no report received at 33 outfalls now: radar rainfall has reached the operator's threshold and no discharge report has arrived (NOAA radar estimate).

Showing 12 of 33.

Source: U.S. Environmental Protection Agency (EPA) national combined sewer outfall inventory (ECHO) and state outfall layers. Open or closed as EPA's inventory lists it. DirtyWaterWatch links outlets to waters using permit numbers, locations and names.

Treatment plant outfalls

2 outfalls

Source: U.S. Environmental Protection Agency (EPA) permit records (ICIS-NPDES permitted features): where a treatment plant’s permitted discharge leaves. No national source says whether a plant outfall is open or closed.

Sewer operators listed for this water: Galesburg Sanitary District.

Boat launches

No public boat launch is listed in our records for this water.

Nearby waters

Sources covering this water

0 records linked to this water. Updated .