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Hydrograph River at a Glance Download
Little Susitna R at Hatcher Pass Rd Bridge Stage (ft)Highest Observation: 5.7 ft at 7:22AM Oct 18, 2014Observed: 5.68 ft at 6:22AM Oct 19, 2014Observed: 5.65 ft at 6:42AM Oct 20, 2014Observed: 5.62 ft at 7:10AM Oct 21, 2014Highest Forecast: 5.44 ft 4:00PM Oct 21, 2014Forecast: 5.4 ft 10:00PM Oct 21, 2014Forecast: 5.36 ft 4:00AM Oct 22, 2014Forecast: 5.33 ft 10:00AM Oct 22, 2014Forecast: 5.3 ft 4:00PM Oct 22, 2014Forecast: 5.27 ft 10:00PM Oct 22, 2014LSOA2(plotting HGIRZ) Graph Created (11:46AM Oct 21, 2014)ObservedForecast (issued 3:59PM Oct 20)Latest observed value: 5.62 ft at 7:10 AM AKDT 21-Oct-2014. Flood Stage is 10 ft
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Tabular Data (UTC)
Tabular Data (AKDT)
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Datum: Not Available
NOTE: Gauge readings not available during the winter months.

NOTE: Forecasts for the Little Susitna R at Hatcher Pass Rd Bridge are issued routinely during the warm season, and as needed at other times of the year.

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Downstream Gauge Downstream Gauge - below Hatcher Pass Bridge
Flood Categories (in feet)
Major Flood Stage:0
Moderate Flood Stage:10.9
Flood Stage:10
Action Stage:9

Historical Crests
(1) 12.45 ft on 09/21/2012
(2) 10.97 ft on 08/19/2006
(3) 9.67 ft on 11/10/2005
(4) 8.75 ft on 08/06/2007
(5) 8.48 ft on 06/10/2013
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(P): Preliminary values subject to further review.

Low Water Records
Zoom Level:10
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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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8 Class VI- whitewater
7.5 High water level -- Class V- whitewater above Hatcher bridge
7 Medium water level -- Class V- whitewater above Hatcher bridge
6.3 Low water level -- Class V- whitewater above Hatcher bridge
(1) Downstream
(2) Upstream
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Latitude: 61.709722° N, Longitude: 149.231944° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 10 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
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The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.
NWS Information
National Weather Service
Anchorage Weather Forecast Office
6930 Sand Lake Road
Anchorage, AK 99502
(907) 266-5102
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Page last modified: 27-Aug-2014 7:08 PM
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