Monocacy River Near Dickerson, MD
USGS Site No: 01643580 • Monocacy River • Frederick County, MD
Monocacy River Near Dickerson, MD on the Monocacy River is currently at 1,520 cfs (Very High — 95th percentile for this date) . Gage height: 3.23 ft.
Reading from
Historical Percentile Comparison
Today's discharge compared to the long-term record for October 28 at this station. Percentile rank shows what fraction of historical years had lower flow on this date.
| Percentile | Label | CFS Threshold | Today's Flow |
|---|---|---|---|
| 10th | Very Low threshold | 0 | |
| 25th | Low threshold | 118 | |
| 50th (Median) | Normal (median) | 155 | |
| 75th | High threshold | 194 | |
| 95th | Very High threshold | 0 |
30-Day Hydrograph
Recent discharge plotted against the historical 10th–95th percentile envelope for the same calendar days. Source: USGS daily values + long-term statistics.
30-Day Flow History
| Date | Discharge (CFS) | Gage Ht (ft) |
|---|---|---|
| May 28, 2026 | 1,760 | — |
| May 27, 2026 | 1,740 | — |
| May 26, 2026 | 2,340 | — |
| May 25, 2026 | 4,260 | — |
| May 24, 2026 | 6,110 | — |
| May 23, 2026 | 2,510 | — |
| May 22, 2026 | 864 | — |
| May 21, 2026 | 318 | — |
| May 20, 2026 | 224 | — |
| May 19, 2026 | 233 | — |
| May 18, 2026 | 252 | — |
| May 17, 2026 | 271 | — |
| May 16, 2026 | 288 | — |
| May 15, 2026 | 296 | — |
| Apr 21, 2026 | 512 | — |
| Apr 20, 2026 | 498 | — |
| Apr 19, 2026 | 472 | — |
| Apr 18, 2026 | 465 | — |
| Apr 17, 2026 | 541 | — |
| Apr 16, 2026 | 591 | — |
| Apr 15, 2026 | 544 | — |
| Apr 14, 2026 | 530 | — |
| Apr 13, 2026 | 544 | — |
| Apr 9, 2026 | 690 | — |
| Apr 8, 2026 | 794 | — |
| Apr 7, 2026 | 1,060 | — |
| Apr 6, 2026 | 1,130 | — |
| Apr 5, 2026 | 741 | — |
| Apr 4, 2026 | 720 | — |
| Apr 3, 2026 | 774 | — |
Station Information
- USGS Site No
- 01643580
- State
- MD
- County
- Frederick County
- Coordinates
- 39.2634, -77.4357
- Drainage Area
- 961 mi²
- Datum (ft)
- 198.1
- HUC Code
- 02070009
Recent Extremes
- Max discharge
-
10,600 cfsMay 14, 2025
- Min discharge
-
111 cfsSep 16, 2025
Computed from the local daily-values archive.
Nearby Gauges
-
Potomac River at Point Of Rocks, MDVery High5.8 mi · 34,600 cfs
-
Patuxent River Near Unity, MDNormal20.4 mi · 24 cfs
-
Cattail Creek Near Glenwood, MDNormal20.6 mi · 17 cfs
-
Hawlings River Near Sandy Spring, MDNormal23.0 mi · 11 cfs
-
Patuxent River Below Brighton Dam Near Brighton MDVery Low23.6 mi · 12 cfs