TidalMapMonocacy River at Jug Bridge near Frederick, MD Water Level Today
NWS river forecast
| When | Stage | Flow |
|---|
Forecast from the NOAA National Water Prediction Service. Issued a few times a day and only while a forecast is active. Not for navigation.
Last 30 days
About this gauge
USGS gauge 01643000 sits on the Monocacy River and reads everything draining 817 square miles of the Monocacy basin. Its datum sits 231 feet above sea level NAVD88. Daily flow has been on record here since 1930, 97 years of it.
Where this gauge sits in the drainage
Two gauged sites sit upstream of here. The closest is Monocacy River at Monocacy Blvd at Frederick, MD, reading 703 square miles. This gauge adds the 114 square miles that drain in between. Downstream the next reading comes from Monocacy River near Dickerson, MD at 961 square miles, so what passes this gauge is about 85% of the water measured there. Water passing here goes on to Potomac River at Edwards Ferry near Poolesville,md.
Normal flows here
The Monocacy River runs a median of 490 cfs at this gauge across 97 years of record. March is the fullest month at a median 1,160 cfs, and September the leanest at 169 cfs. The highest daily mean on record is 74,000 cfs in 1972, and the lowest is 19 cfs in 1966.
| Month | Median flow | Share of annual median |
|---|---|---|
| Jan | 706 cfs | 144% |
| Feb | 940 cfs | 192% |
| Mar | 1,160 cfs | 237% |
| Apr | 934 cfs | 191% |
| May | 640 cfs | 131% |
| Jun | 406 cfs | 83% |
| Jul | 241 cfs | 49% |
| Aug | 195 cfs | 40% |
| Sep | 169 cfs | 34% |
| Oct | 191 cfs | 39% |
| Nov | 334 cfs | 68% |
| Dec | 619 cfs | 126% |
Medians from the USGS daily-statistics record, 1930 to 2026. A month at 100% is running at its own long-term median.
Flood stages and record crests
The Monocacy River reaches flood stage at this gauge at 15 feet. NWS starts watching it at 13 feet. The highest crest on record is 35.9 feet, in June 1972.
| Category | Gage height |
|---|---|
| Action | 13 ft |
| Minor flooding | 15 ft |
| Moderate flooding | 17 ft |
| Major flooding | 20 ft |
| When | Crest |
|---|---|
| June 1972 | 35.9 ft |
| September 1975 | 30.8 ft |
| August 1933 | 28.1 ft |
| October 1976 | 25.4 ft |
| January 1996 | 23.7 ft |
Flood categories and crest history from the NOAA National Water Prediction Service, gauge FDKM2. Stages are gage height, not depth. Not for navigation.
Nearby river gauges
- Linganore Creek at Linganore Rd near Frederick, MD
- Monocacy River at Monocacy Blvd at Frederick, MD
- Bennett Creek at Park Mills, MD
- Soper Branch at Hyattstown, MD
- Fishing Creek at Mountaindale, MD
- Monocacy River near Dickerson, MD
- Tenmile Creek near Clarksburg, MD
- Catoctin Creek near Middletown, MD
- Tenmile Creek near Boyds, MD
- Little Seneca Creek Tributary near Clarksburg, MD
- Cabin Branch near Boyds, MD
- Little Seneca Creek Tributary at Brink, MD
Live streamflow and gage height: USGS gauge 01643000. Percentile context computed against the gauge's period of record. Not for navigation.
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