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Web Portal Changes: In Spring 2024, the Advanced Hydrologic Prediction Service (AHPS) hosted at will be replaced by the National Water Prediction Service (NWPS) at a repurposed A preview of NWPS is available here, where you can see your station hydrograph by replacing SSSSS with the station 5-character id:

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Hydrograph River at a Glance Download
Kashwitna River near Willow Stage (ft)Observed: 11.94 ft at 5:00PM Feb 26, 2024Highest Observation: 11.96 ft at 9:00PM Feb 26, 2024Highest Observation: 11.96 ft at 3:00AM Feb 27, 2024Observed: 11.95 ft at 10:00AM Feb 27, 2024Observed: 11.85 ft at 3:00PM Feb 27, 2024Observed: 11.89 ft at 9:00PM Feb 27, 2024Observed: 11.9 ft at 3:00AM Feb 28, 2024Observed: 11.9 ft at 9:00AM Feb 28, 2024Observed: 11.79 ft at 3:00PM Feb 28, 2024Observed: 11.87 ft at 9:00PM Feb 28, 2024Observed: 11.87 ft at 3:00AM Feb 29, 2024Observed: 11.86 ft at 9:00AM Feb 29, 2024Observed: 11.82 ft at 3:00PM Feb 29, 2024Observed: 11.87 ft at 10:00PM Feb 29, 2024Observed: 11.87 ft at 3:00AM Mar 01, 2024Observed: 11.82 ft at 10:00AM Mar 01, 2024Observed: 11.79 ft at 3:00PM Mar 01, 2024Observed: 11.87 ft at 9:00PM Mar 01, 2024Observed: 11.87 ft at 3:00AM Mar 02, 2024Observed: 11.87 ft at 9:00AM Mar 02, 2024Observed: 11.78 ft at 3:00PM Mar 02, 2024Observed: 11.85 ft at 9:00PM Mar 02, 2024Observed: 11.83 ft at 3:00AM Mar 03, 2024Observed: 11.84 ft at 9:00AM Mar 03, 2024Observed: 11.81 ft at 6:00PM Mar 03, 2024Observed: 11.86 ft at 10:00PM Mar 03, 2024Observed: 11.86 ft at 3:00AM Mar 04, 2024National Weather ServiceKOWA2(plotting HGIRZ) Graph Created (10:17AM Mar 4, 2024)ObservedLatest observed value: 11.86 ft at 3:00 AM AKST 4-Mar-2024. Flood Stage is 18 ft
About this graph
Tabular Data (UTC)
Tabular Data (AKST)
XML Data
RSS Files
Datum: Not Available
NOTE: Stage may be affected by ice.

NOTE: Gage data do not meet the quality standards of USGS gages.

NOTE: Forecasts are not available for the Kashwitna River near Willow. Only observed stages are available for this point.

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Flood Categories (in feet)
Major Flood Stage: 0
Moderate Flood Stage: 178
Flood Stage: 176
Action Stage: 174.5
Low Stage (in feet): -9999

Historic Crests
Currently none available.

Recent Crests
Currently none available.

Low Water Records
Currently none available.

For more information on your flood risk go to

Zoom Level:15
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Gauge LocationGauge Map Marker
Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.
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(1) Looking Downstream on 6/17/2019
(2) Looking Upstream on 6/17/2019
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Latitude: 61.925864° N, Longitude: 150.073075° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 176 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)
(gauge height = flood stage)
Elevation information source
NAVD88 Not Available Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 Not Available Not Available Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other Not Available Not Available  

Current/Historical Observations:

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