Gunpowder Falls at Glencoe, MD
USGS Site No: 01582500 • Baltimore County, MD
Gunpowder Falls at Glencoe, MD is currently at 97 cfs (Normal — 31th percentile for this date) . Gage height: 1.04 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 | 62 | |
| 25th | Low threshold | 89 | |
| 50th (Median) | Normal (median) | 126 | Today: 97 cfs |
| 75th | High threshold | 194 | |
| 95th | Very High threshold | 548 |
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 | 109 | — |
| May 27, 2026 | 120 | — |
| May 26, 2026 | 123 | — |
| May 25, 2026 | 153 | — |
| May 24, 2026 | 289 | — |
| May 23, 2026 | 164 | — |
| May 22, 2026 | 116 | — |
| May 21, 2026 | 127 | — |
| May 20, 2026 | 83 | — |
| May 19, 2026 | 77 | — |
| May 18, 2026 | 78 | — |
| May 17, 2026 | 79 | — |
| May 16, 2026 | 81 | — |
| May 15, 2026 | 83 | — |
| Apr 21, 2026 | 91 | — |
| Apr 20, 2026 | 94 | — |
| Apr 19, 2026 | 97 | — |
| Apr 18, 2026 | 93 | — |
| Apr 17, 2026 | 95 | — |
| Apr 16, 2026 | 98 | — |
| Apr 15, 2026 | 113 | — |
| Apr 14, 2026 | 97 | — |
| Apr 13, 2026 | 97 | — |
| Apr 12, 2026 | 96 | — |
| Apr 11, 2026 | 99 | — |
| Apr 10, 2026 | 99 | — |
| Apr 9, 2026 | 100 | — |
| Apr 8, 2026 | 101 | — |
| Apr 7, 2026 | 105 | — |
| Apr 6, 2026 | 116 | — |
Station Information
- USGS Site No
- 01582500
- State
- MD
- County
- Baltimore County
- Coordinates
- 39.5497, -76.6361
- Drainage Area
- 160 mi²
- Datum (ft)
- 244.1
- HUC Code
- 02060003
Flood Stage Thresholds
- Action Stage
- 5.0 ft
- Flood Stage
- 7.0 ft
- Moderate Flood
- 10.0 ft
- Major Flood
- 12.0 ft
Currently 5.96 ft below flood stage.
Recent Extremes
- Max discharge
-
505 cfsFeb 20, 2026
- Min discharge
-
68 cfsNov 18, 2025
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
Western Run at Western Run, MDNormal3.4 mi · 39 cfs
-
Little Falls at Blue Mount, MDNormal3.9 mi · 45 cfs
-
Beaverdam Run at Cockeysville, MDNormal4.5 mi · 16 cfs
-
Baisman Run at Broadmoor, MDNormal5.3 mi · 1 cfs
-
Pond Branch at Oregon Ridge, MDLow5.5 mi · 0 cfs