Whitemarsh Run Near Fullerton, MD
USGS Site No: 01585090 • Whitemarsh Run • Baltimore County, MD
Whitemarsh Run Near Fullerton, MD on the Whitemarsh Run is currently at 1 cfs (Normal — 51th percentile for this date) . Gage height: 1.22 ft.
Reading from
Historical Percentile Comparison
Today's discharge compared to the long-term record for June 11 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 | 1 | |
| 50th (Median) | Normal (median) | 1 | |
| 75th | High threshold | 5 | Today: 1 cfs |
| 95th | Very High threshold | 42 |
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 | 2 | — |
| May 27, 2026 | 5 | — |
| May 26, 2026 | 2 | — |
| May 25, 2026 | 4 | — |
| May 24, 2026 | 43 | — |
| May 23, 2026 | 42 | — |
| May 22, 2026 | 9 | — |
| May 21, 2026 | 6 | — |
| May 20, 2026 | 3 | — |
| May 19, 2026 | 1 | — |
| May 17, 2026 | 1 | — |
| May 16, 2026 | 1 | — |
| May 15, 2026 | 1 | — |
| Apr 21, 2026 | 1 | — |
| Apr 20, 2026 | 1 | — |
| Apr 19, 2026 | 2 | — |
| Apr 18, 2026 | 1 | — |
| Apr 17, 2026 | 1 | — |
| Apr 16, 2026 | 1 | — |
| Apr 15, 2026 | 3 | — |
| Apr 14, 2026 | 2 | — |
| Apr 13, 2026 | 1 | — |
| Apr 12, 2026 | 1 | — |
| Apr 11, 2026 | 1 | — |
| Apr 10, 2026 | 1 | — |
| Apr 9, 2026 | 1 | — |
| Apr 8, 2026 | 1 | — |
| Apr 7, 2026 | 1 | — |
| Apr 6, 2026 | 2 | — |
| Apr 5, 2026 | 7 | — |
Station Information
- USGS Site No
- 01585090
- State
- MD
- County
- Baltimore County
- Coordinates
- 39.3794, -76.4952
- Drainage Area
- 3 mi²
- Datum (ft)
- 119.6
- HUC Code
- 020600030601
Flood Stage Thresholds
- Action Stage
- 5.0 ft
- Flood Stage
- 10.0 ft
- Moderate Flood
- 18.0 ft
- Major Flood
- 20.0 ft
Currently 8.78 ft below flood stage.
Recent Extremes
- Max discharge
-
89 cfsJul 31, 2025
- Min discharge
-
0 cfsNov 16, 2025
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
Minebank Run Near Glen Arm, MDNormal3.9 mi · 1 cfs
-
Long Green Creek at Glen Arm, MDLow5.3 mi · 5 cfs
-
Long Quarter Branch at Lutherville, MDNormal6.3 mi · 1 cfs
-
Foster Branch Near Joppatowne, MDNormal8.4 mi · 1 cfs
-
Little Gunpowder Falls at Laurel Brook, MDLow9.3 mi · 24 cfs