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Hydrograph River at a Glance Download
Little Susitna R at Parks Hwy Bridge Stage (ft)LSHA2(plotting HGIRZ) Graph Created (5:16AM Mar 18, 2018)Flood Stage is 11 ft
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Datum: Not Available
NOTE: Stage and discharge data do not meet quality standards of USGS gages.

NOTE: Gauge reading may be affected by ice.

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

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Upstream Gauge - below Hatcher Pass Bridge Upstream Gauge
Flood Categories (in feet)
Major Flood Stage: 13
Moderate Flood Stage: 12
Flood Stage: 11
Action Stage: 9
Low Stage (in feet): -9999

Historic Crests
(1) 13.95 ft on 09/22/2012
(2) 13.78 ft on 08/19/2006
(3) 12.50 ft on 10/12/1986
(4) 11.07 ft on 09/30/2015 (P)
(5) 10.88 ft on 07/26/1982
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(P): Preliminary values subject to further review.

Recent Crests
(1) 6.43 ft on 07/09/2017 (P)
(2) 10.71 ft on 10/01/2016 (P)
(3) 11.07 ft on 09/30/2015 (P)
(4) 7.54 ft on 06/26/2014 (P)
(5) 9.09 ft on 09/12/2013
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(P): Preliminary values subject to further review.

Low Water Records
Currently none available.

For more information on your flood risk go to

Zoom Level:10
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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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If you notice any errors in the below information, please contact our Webmaster
9.5 water levels slightly overbank at lowlying riverfront property just east of the Parks Hwy
9.25 Bankfull levels for riverfront property in the Enchanted Forest subdivision just east of the Parks Hwy; south side of river
(1) Upstream
(2) Downstream
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Latitude: 61.626667° N, Longitude: 149.800833° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 11 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 264 ft 275 ft 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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Long-term Hydrograph
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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: 21-Dec-2016 10:34 PM
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