TidalMapSawmill Creek at Glen Burnie, 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 01589500 sits on Sawmill Creek and reads everything draining 5.0 square miles of the Gunpowder-Patapsco basin. Its datum sits 25 feet above sea level NAVD88. Daily flow has been on record here since 1944, 51 years of it.
Normal flows here
Sawmill Creek runs a median of 4.8 cfs at this gauge across 51 years of record. April is the fullest month at a median 6.0 cfs, and September the leanest at 3.9 cfs. The highest daily mean on record is 248 cfs in 2014, and the lowest is 0.0 cfs in 1986.
| Month | Median flow | Share of annual median |
|---|---|---|
| Jan | 5.0 cfs | 104% |
| Feb | 5.2 cfs | 108% |
| Mar | 5.6 cfs | 117% |
| Apr | 6.0 cfs | 125% |
| May | 5.7 cfs | 119% |
| Jun | 5.0 cfs | 104% |
| Jul | 4.3 cfs | 90% |
| Aug | 4.3 cfs | 90% |
| Sep | 3.9 cfs | 81% |
| Oct | 4.0 cfs | 83% |
| Nov | 4.3 cfs | 91% |
| Dec | 4.8 cfs | 100% |
Medians from the USGS daily-statistics record, 1944 to 2026. A month at 100% is running at its own long-term median.
Flood stages and record crests
Sawmill Creek reaches flood stage at this gauge at 5 feet. NWS starts watching it at 4 feet. The highest crest on record is 7.6 feet, in August 2014.
| Category | Gage height |
|---|---|
| Action | 4 ft |
| Minor flooding | 5 ft |
| Moderate flooding | 7 ft |
| Major flooding | 9 ft |
| When | Crest |
|---|---|
| August 2014 | 7.6 ft |
| July 2018 | 6.8 ft |
| September 2011 | 6.4 ft |
| September 1999 | 5.7 ft |
| August 2011 | 5.2 ft |
Flood categories and crest history from the NOAA National Water Prediction Service, gauge GBSM2. Stages are gage height, not depth. Not for navigation.
Nearby river gauges
- East Branch Herbert Run at Arbutus, MD
- South Fork Jabez Branch at Millersville, MD
- Patapsco River near Elkridge, MD
- Patapsco River near Catonsville, MD
- Dead Run at Franklintown, MD
- Herring Run at Sinclair Lane at Baltimore, MD
- Dead Run near Catonsville, MD
- Dead Run at Woodlawn, MD
- Dead Run Tributary at Woodlawn, MD
- Moores Run at Radecke Ave at Baltimore, MD
- Little Patuxent River at Savage, MD
- Dead Run Tributary near Woodlawn, MD
Live streamflow and gage height: USGS gauge 01589500. Percentile context computed against the gauge's period of record. Not for navigation.
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