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Web Portal Changes: The Advanced Hydrologic Prediction Service (AHPS) hosted at will be replaced by the National Water Prediction Service (NWPS), with a target of Spring 2024. Existing AHPS content and features will be preserved and expanded within NWPS. The NWS is now accepting feedback on NWPS. Please visit for more information.

Experimental National Water Center Products: Flood Inundation Mapping services are now available for 10% of the U.S. population. Please visit for more information. The National Hydrologic Discussion, Area Hydrologic Discussion, Flood Hazard Outlook, and real-time geospatial services depicting River Forecast Center and National Water Model forecasts, continue to be accessible via the URL above, as described in the StoryMap here.

Hydrograph River at a Glance Download
Willow Creek at Parks Highway Stage (ft)Highest Observation: 6.55 ft at 9:00AM Nov 24, 2023Observed: 6.51 ft at 5:00PM Nov 24, 2023Observed: 6.43 ft at 9:00PM Nov 24, 2023Observed: 6.37 ft at 3:00AM Nov 25, 2023Observed: 6.31 ft at 9:00AM Nov 25, 2023Observed: 6.25 ft at 3:00PM Nov 25, 2023Observed: 6.22 ft at 9:00PM Nov 25, 2023Observed: 6.21 ft at 3:00AM Nov 26, 2023Observed: 6.2 ft at 9:00AM Nov 26, 2023Observed: 6.21 ft at 4:00PM Nov 26, 2023Observed: 6.2 ft at 9:00PM Nov 26, 2023Observed: 6.19 ft at 5:00AM Nov 27, 2023Observed: 6.17 ft at 9:00AM Nov 27, 2023Observed: 6.19 ft at 3:00PM Nov 27, 2023Observed: 6.18 ft at 9:00PM Nov 27, 2023Observed: 6.15 ft at 3:00AM Nov 28, 2023Observed: 6.11 ft at 9:00AM Nov 28, 2023Observed: 6.1 ft at 4:00PM Nov 28, 2023Observed: 6.13 ft at 9:00PM Nov 28, 2023Observed: 6.11 ft at 3:00AM Nov 29, 2023Observed: 6.09 ft at 9:00AM Nov 29, 2023Observed: 6.08 ft at 4:00PM Nov 29, 2023Observed: 6.06 ft at 9:00PM Nov 29, 2023Observed: 6.07 ft at 4:48AM Nov 30, 2023Observed: 6.05 ft at 9:00AM Nov 30, 2023Observed: 6.08 ft at 3:36PM Nov 30, 2023Observed: 5.99 ft at 9:00PM Nov 30, 2023Observed: 5.94 ft at 3:36AM Dec 01, 2023WILA2(plotting HGIRZ) Graph Created (5:16AM Dec 1, 2023)ObservedLatest observed value: 5.94 ft at 3:36 AM AKST 1-Dec-2023. Flood Stage is 10 ft
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About this graph
Tabular Data (UTC)
Tabular Data (AKST)
XML Data
RSS Files
Datum: NAVD88
NOTE: Gage data do not meet the quality standards of USGS gages.

NOTE: Stage may be affected by ice.

NOTE: Forecasts for the Willow Creek at Parks Highway are issued routinely during the warm season, and as needed at other times of the year.

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Upstream Gauge - near Willow Upstream Gauge
Flood Categories (in feet)
Major Flood Stage: 12.5
Moderate Flood Stage: 11.5
Flood Stage: 10
Action Stage: 9
Low Stage (in feet): -9999

Historic Crests
(1) 13.86 ft on 10/11/1986
(2) 13.35 ft on 09/21/2012 (P)
(3) 12.96 ft on 08/19/2006
(4) 11.10 ft on 09/29/2015 (P)
(5) 11.08 ft on 09/11/1975
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(P): Preliminary values subject to further review.

Recent Crests
(1) 9.92 ft on 08/28/2021 (P)
(2) 7.77 ft on 07/09/2017 (P)
(3) 9.45 ft on 09/13/2016 (P)
(4) 11.10 ft on 09/29/2015 (P)
(5) 8.88 ft on 06/26/2014 (P)
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.

For more information on your flood risk go to

Zoom Level:8
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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.
Flood Impacts & Photos Collapse
If you notice any errors in the below information, please contact our Webmaster
9 High water level -- Class IV whitewater in Willow Creek canyon
8.3 Medium water level -- Class IV whitewater in Willow Creek canyon
7.5 Low water level -- Class III whitewater in Willow Creek canyon
(1) Gage
(2) Looking Downstream on 6/17/2019
(3) Looking Upstream on 6/17/2019
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Latitude: 61.766667° N, Longitude: 150.066667° 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 144.30 ft 154.30 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  
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Long-term Hydrograph
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Hydrologic Resources Additional Resources
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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) 266-5160
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