Ashuelot River near Gilsum

Highest listed crest 11.36 ftFlood stage 9.5 ft1 crests since 2023

The Ashuelot River near Gilsum crested above flood stage 1 time among the 1 crests the National Weather Service lists from 2023 to 2023. The highest, 11.36 ft on July 11, 2023, was moderate flooding, 1.86 feet above flood stage. 1 other gauge on the Ashuelot River crested above flood stage within a week of it.

The gauge

Highest listed crest: 11.36 ft; July 11, 2023; 7,356 cubic feet per second
Flood stage: 9.5 ft; Major flooding from 12.0 ft
Crests at major: 0; 1 above flood stage
Most recent flood crest: July 11, 2023; 11.36 ft, moderate flooding
Location: Cheshire County; Near Keene (6.2 mi)
Identifiers: NWS GILN3; USGS 01157000

Flood stages

The thresholds the National Weather Service uses for this gauge today, and how many listed crests reached each.

Flood categories, Ashuelot River near Gilsum

Action stage	8.0	0	—	The level at which the NWS or its partners begin to take action
Flood stage (minor)	9.5	0	—	Minimal or no property damage, but possibly some public threat
Moderate flood stage	11.0	1	Jul 11, 2023	Some inundation of structures and roads near the stream
Major flood stage	12.0	0	—	Extensive inundation of structures and roads

Every listed crest

1 crests from 2023 to 2023. Filled: at or above flood stage. Hover a crest for its date and stage.

These are the crests the local National Weather Service office lists for the gauge: the highest on record and recent crests. Lesser floods between them may be missing, so counts by decade are a floor.
Categories use today's flood stages. Levees, dams and channel changes since a crest can make old and new stages not directly comparable.

Highest crests

Highest listed crests, Ashuelot River near Gilsum

1	Jul 11, 2023	11.36	+1.86	Moderate	7,356

The worst floods along the Ashuelot River

For this gauge's highest crests, the other gauges on the Ashuelot River that crested above flood stage within a week.

July 11, 2023: 11.36 ft here, moderate flooding

HinsdaleNH · Jul 11, 2023 · 8.05 ft · Minor

Gauges on the Ashuelot River

In USGS station-number order, which runs downstream within a river basin.

Flood gauges on the Ashuelot River

Gilsum this gauge	NH	9.5	11.36 ft, Jul 11, 2023	0
Keene	NH	73.0	74.60 ft, Oct 9, 2005	0
West Swanzey	NH	11.0	12.89 ft, Jul 19, 2021	0
Hinsdale	NH	8.0	20.20 ft, Mar 19, 1936	2

Other gauges in Cheshire County

Flood gauges in Cheshire County

West Swanzey	11.0	12.89 ft, Jul 19, 2021	0
Hinsdale	8.0	20.20 ft, Mar 19, 1936	2
Keene	73.0	74.60 ft, Oct 9, 2005	0
Alstead	9.0	11.78 ft, Jul 29, 2021	2
North Walpole	28.0	43.80 ft, Mar 19, 1936	2

Cheshire County: every hazard · River floods across the country · New Hampshire

NOAA National Water Prediction Service, gauge GILN3, retrieved October 30, 2026. Stages in feet on the gauge's own datum, not elevation. Crests are as the National Weather Service lists them; preliminary values may be revised.