Green River at Williamstown, MA

USGS Site No: 01333000 • Green River • Berkshire County, MA

Green River at Williamstown, MA on the Green River is currently at 48 cfs (Normal — 56th percentile for this date) . Gage height: 1.89 ft.

Reading from

↑ Upstream on Green River
Green River Near Colrain, MA
Downstream on Green River ↓
Green River Near Great Barrington, MA
48
CFS Discharge
1.89
Gage Height (ft)
Normal
Flow Condition
N/A
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 23
25th Low threshold 29
50th (Median) Normal (median) 41
75th High threshold 72 Today: 48 cfs
95th Very High threshold 218

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.

707 354 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 51 —
May 27, 2026 55 —
May 26, 2026 62 —
May 25, 2026 80 —
May 24, 2026 60 —
May 23, 2026 53 —
May 22, 2026 54 —
May 21, 2026 57 —
May 20, 2026 61 —
May 19, 2026 65 —
May 18, 2026 68 —
May 17, 2026 74 —
May 16, 2026 81 —
May 15, 2026 85 —
Apr 21, 2026 105 —
Apr 20, 2026 119 —
Apr 19, 2026 128 —
Apr 18, 2026 93 —
Apr 17, 2026 103 —
Apr 16, 2026 120 —
Apr 15, 2026 108 —
Apr 14, 2026 109 —
Apr 13, 2026 108 —
Apr 12, 2026 116 —
Apr 11, 2026 133 —
Apr 10, 2026 134 —
Apr 9, 2026 146 —
Apr 8, 2026 163 —
Apr 7, 2026 185 —
Apr 6, 2026 205 —

Station Information

USGS Site No
01333000
State
MA
County
Berkshire County
Coordinates
42.7089, -73.1968
Drainage Area
43 mi²
Datum (ft)
610.6
HUC Code
02020003
View on USGS NWIS →

Recent Extremes

Max discharge
816 cfs
Mar 12, 2026
Min discharge
4 cfs
Sep 22, 2025

Computed from the local daily-values archive.

Nearby Gauges

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