Little Gunpowder Falls at Laurel Brook, MD

USGS Site No: 01584500 • Baltimore County, MD

Little Gunpowder Falls at Laurel Brook, MD is currently at 24 cfs (Low — 23th percentile for this date) . Gage height: 1.22 ft.

Reading from

24
CFS Discharge
1.22
Gage Height (ft)
Low
Flow Condition
Normal
Flood Status

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 18
25th Low threshold 25 Today: 24 cfs
50th (Median) Normal (median) 35
75th High threshold 46
95th Very High threshold 144

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.

226 113 0 cfs Apr 6 May 28
10th–95th historical Day-of-year median Recent discharge

30-Day Flow History

Date Discharge (CFS) Gage Ht (ft)
May 28, 2026 31 —
May 27, 2026 35 —
May 26, 2026 35 —
May 25, 2026 49 —
May 24, 2026 167 —
May 23, 2026 57 —
May 22, 2026 23 —
May 21, 2026 18 —
May 20, 2026 15 —
May 19, 2026 15 —
May 18, 2026 16 —
May 17, 2026 17 —
May 16, 2026 17 —
May 15, 2026 19 —
Apr 21, 2026 19 —
Apr 20, 2026 21 —
Apr 19, 2026 21 —
Apr 18, 2026 20 —
Apr 17, 2026 21 —
Apr 16, 2026 22 —
Apr 15, 2026 27 —
Apr 14, 2026 23 —
Apr 13, 2026 22 —
Apr 12, 2026 23 —
Apr 11, 2026 24 —
Apr 10, 2026 24 —
Apr 9, 2026 24 —
Apr 8, 2026 24 —
Apr 7, 2026 26 —
Apr 6, 2026 30 —

Station Information

USGS Site No
01584500
State
MD
County
Baltimore County
Coordinates
39.5054, -76.4318
Drainage Area
36 mi²
Datum (ft)
260.9
HUC Code
020600030501
View on USGS NWIS →

Flood Stage Thresholds

Action Stage
6.0 ft
Flood Stage
7.5 ft

Currently 6.28 ft below flood stage.

Recent Extremes

Max discharge
201 cfs
Jul 31, 2025
Min discharge
14 cfs
Oct 19, 2025
Days at flood stage
0

Computed from the local daily-values archive.

Nearby Gauges

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