East Branch Housatonic River at Coltsville, MA

USGS Site No: 01197000 • East Branch Housatonic River • Berkshire County, MA

East Branch Housatonic River at Coltsville, MA on the East Branch Housatonic River is currently at 33 cfs (Low — 22th percentile for this date) . Gage height: 0.80 ft.

Reading from

33
CFS Discharge
0.80
Gage Height (ft)
Low
Flow Condition
Normal
Flood Status

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 26
25th Low threshold 35 Today: 33 cfs
50th (Median) Normal (median) 57
75th High threshold 125
95th Very High threshold 307

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.

1.2k 621 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 43 —
May 27, 2026 57 —
May 26, 2026 76 —
May 25, 2026 71 —
May 24, 2026 37 —
May 23, 2026 26 —
May 22, 2026 29 —
May 21, 2026 33 —
May 20, 2026 39 —
May 19, 2026 44 —
May 18, 2026 50 —
May 17, 2026 57 —
May 16, 2026 66 —
May 15, 2026 68 —
Apr 21, 2026 84 —
Apr 20, 2026 99 —
Apr 19, 2026 86 —
Apr 18, 2026 75 —
Apr 17, 2026 87 —
Apr 16, 2026 99 —
Apr 15, 2026 78 —
Apr 14, 2026 72 —
Apr 13, 2026 75 —
Apr 12, 2026 74 —
Apr 11, 2026 77 —
Apr 10, 2026 79 —
Apr 9, 2026 97 —
Apr 8, 2026 114 —
Apr 7, 2026 140 —
Apr 6, 2026 149 —

Station Information

USGS Site No
01197000
State
MA
Coordinates
42.4696, -73.1973
Drainage Area
58 mi²
Datum (ft)
993.0
HUC Code
01100005
View on USGS NWIS →

Flood Stage Thresholds

Action Stage
4.0 ft
Flood Stage
5.0 ft
Moderate Flood
8.0 ft
Major Flood
10.0 ft

Currently 4.20 ft below flood stage.

Recent Extremes

Max discharge
1,030 cfs
Mar 17, 2026
Min discharge
11 cfs
Sep 1, 2025
Days at flood stage
0

Computed from the local daily-values archive.

Nearby Gauges