Isinglass River at Rochester Neck Road, near Dover, NH

USGS Site No: 01072870 • Isinglass River • Strafford County, NH

Isinglass River at Rochester Neck Road, near Dover, NH on the Isinglass River is currently at 42 cfs (Low — 11th percentile for this date) . Gage height: 3.52 ft.

Reading from

42
CFS Discharge
3.52
Gage Height (ft)
Low
Flow Condition
N/A
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 40
25th Low threshold 95 Today: 42 cfs
50th (Median) Normal (median) 173
75th High threshold 233
95th Very High threshold 578

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.

3.9k 2k 0 cfs Apr 7 May 29
10th–95th historical Day-of-year median Recent discharge

30-Day Flow History

Date Discharge (CFS) Gage Ht (ft)
May 29, 2026 48 —
May 28, 2026 68 —
May 27, 2026 98 —
May 26, 2026 131 —
May 25, 2026 75 —
May 24, 2026 28 —
May 23, 2026 30 —
May 22, 2026 38 —
May 21, 2026 48 —
May 20, 2026 64 —
May 19, 2026 83 —
May 18, 2026 112 —
May 17, 2026 165 —
May 16, 2026 238 —
May 15, 2026 182 —
Apr 21, 2026 85 —
Apr 20, 2026 95 —
Apr 19, 2026 92 —
Apr 18, 2026 96 —
Apr 17, 2026 102 —
Apr 16, 2026 107 —
Apr 15, 2026 113 —
Apr 14, 2026 95 —
Apr 13, 2026 87 —
Apr 12, 2026 89 —
Apr 11, 2026 100 —
Apr 10, 2026 110 —
Apr 9, 2026 123 —
Apr 8, 2026 139 —
Apr 7, 2026 162 —

Station Information

USGS Site No
01072870
State
NH
County
Strafford County
Coordinates
43.2348, -70.9565
Drainage Area
74 mi²
Datum (ft)
107.8
HUC Code
01060003
View on USGS NWIS →

Recent Extremes

Max discharge
1,140 cfs
May 11, 2025
Min discharge
1 cfs
Aug 28, 2025

Computed from the local daily-values archive.

Nearby Gauges

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