Monocacy River
River in Maryland, past Buckeystown, Dickerson, Frederick, Rocky Ridge, Thurmont and Walkersville
Current status
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.
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
Sources checked: MDE Reported Sewer Overflows (New for 2023), Maryland Open Data Portal (Socrata stgj-u72u) (last successful check 2026-11-03 02:31 UTC). Status by DirtyWaterWatch, updated 2026-11-03 02:43 UTC. · Updated
Estimated downstream stretches on Monocacy River
No downstream stretch has a current status here as of Nov 2, 2026, 9:43 PM EST. Check the reports below.
The last 90 days
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 2026-11-03 02:43 UTC.
Reported discharges over time
Historical charts are not available here. See the reports and sources on this page.
Reports linked to Monocacy River
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.
| When | Report | Status |
|---|---|---|
| to 10:20 AM | City of Frederick DPW · 100 Treatment Plant Road · SSO · 50 gallons report · notice · map | ended |
| to Oct 23 ’25, 12:00 AM | Frederick County Division of Utilities · 7106 Geoffrey Way · SSO · 14,320 gallons report · notice · map | ended |
| to Oct 23 ’24, 3:30 PM | Frederick County Division of Utilities · 7106 Geoffrey Way · SSO · 14,320 gallons report · notice · map | ended |
| to 10:00 PM | City of Frederick DPW · 5605 Spectrum Drive · SSO · 1,430 gallons report · notice · map | ended |
| to 11:30 AM | City of Frederick DPW · 100 Treatment Plant Road · Bypass · 1,000 gallons report · notice · map | ended |
| Spirit Realty LP · 4300 Georgia Pacific Boulevard · SSO · volume not reported report · notice · map | reported |
Sources: MDE Reported Sewer Overflows (New for 2023), Maryland Open Data Portal (Socrata stgj-u72u), retrieved 2026-11-03 02:31 UTC. A report's record id and times show when you hover or focus its "report" link.
All reports in Maryland by year: 2026 (1 here) · 2025 (1 here) · 2024 (3 here) · 2023 (1 here)
Wastewater outlets on this water
Outfall: a pipe or outlet where wastewater enters a water body.
No wastewater outlet in our records is linked to this water.
Boat launches
- Buckeystown Community Park · Carry-in launch (canoe and kayak)
- Creagerstown Park, Thurmont · Boat ramp
- Devilbiss Bridge, Walkersville · Carry-in launch (canoe and kayak)
- Gambrill Mill Soft Launch at Monocacy National Battlefield, Frederick · Carry-in launch (canoe and kayak)
- Monocacy Aqueduct, Dickerson · Carry-in launch (canoe and kayak)
- Monocacy boat ramp, Dickerson · Boat ramp
- Park Mills boat ramp, Dickerson · Boat ramp
- Pinecliff Park, Frederick · Boat ramp
- Riverside Park, Frederick · Boat ramp
- Rocky Ridge / Maryland Rt. 77 Bridge · Carry-in launch (canoe and kayak)
Source: OpenBoatLaunch launch records (public agency data and OpenStreetMap, Open Database License). · Monocacy River on OpenBoatLaunch
Nearby waters
- Greenbrier Lake, MD No current status shown about 25 km away
- Antietam Creek, MD No current status shown about 30 km away
- Great Seneca Creek, MD No current status shown about 31 km away
- Piney Run Reservoir, MD No current status shown about 31 km away
- Catoctin Creek, MD No current status shown about 33 km away
Sources covering this water
- MDE Reported Sewer Overflows (New for 2023), Maryland Open Data Portal (Socrata stgj-u72u) · Latest check succeeded · Last successful check: 2026-11-03 02:31 UTC
6 records linked to this water. Updated .