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Experimental National Water Center Products: Flood Inundation Mapping services are now available for 10% of the U.S. population. Please visit https://www.weather.gov/owp/operations 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.

Weather Forecast Office Fairbanks, AK

Alaska Pacific River Forecast Center

Hydrograph

River at a Glance

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Probability Information Weekly Chance of Exceeding Levels Chance of Exceeding Levels During Entire Period Short-term Probabilistic Guidance (Experimental)

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About this graph Tabular Data (UTC) Tabular Data (AKST) Datum: Not Available Metadata

NOTE: Stage may be affected by ice. NOTE: Forecasts for the Goodpaster River near Big Delta are issued routinely during the warm season, and as needed at other times of the year.

Default Hydrograph Scale to Flood Categories   Return to Area Map

Flood Categories (in feet) Major Flood Stage: 0 Moderate Flood Stage: 21.5 Flood Stage: 19.5 Action Stage: 19 Low Stage (in feet): -9999 Historic Crests (1) 21.20 ft on 06/24/2020 (2) 20.77 ft on 06/05/2013 (3) 20.68 ft on 07/29/2008 (4) 20.10 ft on 06/19/2014 (5) 20.00 ft on 06/23/2006 Show More Historic Crests (P): Preliminary values subject to further review. Recent Crests (1) 21.20 ft on 06/24/2020 (2) 18.84 ft on 08/17/2019 (3) 17.61 ft on 05/21/2018 (4) 17.61 ft on 05/15/2017 (5) 19.05 ft on 05/16/2016 Show More Recent Crests (P): Preliminary values subject to further review. Low Water Records Currently none available.

Zoom Level:7 Legend FEMA Layer Gauge Location Disclaimer 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

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21.5	MODERATE FLOOD STAGE: Pogo Mine airstrip unusable and mine roads adjacent to the river impassable and/or washed out, flooding likely of the lower Pogo Mine camp warehouse, some private cabins flooded and most surrounded by water. Note - Cabins downstream from gage. River peak takes 48-60 hours to travel downstream
20.7	Pogo airstrip and the lower equipment yard become inundated. (6/6/13)Note - Cabins downstream from gage. River peak takes 48-60 hours to travel downstream
20.5	Water will begin to inundate property around most private cabins and some cabins located in low lying areas may experience flooding.Note - Cabins downstream from gage. River peak takes 48-60 hours to travel downstream
20	Approximately 1/3 of the Pogo Mine airstrip inundated with water, flooding occurs at the lower Pogo Mine camp warehouse yard and some roads adjacent to the river, some private cabins located in areas will be surrounded by water.Note - Cabins downstream from gage. River peak takes 48-60 hours to travel downstream
19.5	MINOR FLOOD STAGE: Water begins to innundate portions of the Pogo Mine airstrip and some roads adjacent to the river at the mine, water will begin to flood property adjacent to some private cabins along the river.Note - Cabins downstream from gage. River peak takes 48-60 hours to travel downstream
19	All gravel bars covered with water, water above lowest brush line, water flowing over lowest river banks and into normally dry sloughs and oxbow lakes, water fills ditches adjacent to the Pogo Mine airstrip.Note - Cabins downstream from gage. River peak takes 48-60 hours to travel downstream
Photos (1) Pogo lower equipment yard at a stage of 20.70ft. (2) Pogo airstrip at a stage of 20.70ft.

About This Location

Latitude: 64.450556° N, Longitude: 144.942222° W, Horizontal Datum: NAD83/WGS84 River Stage Reference Frame Gauge Height Flood Stage Uses NWS stage 0 ft 19.5 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps Vertical Datum Elevation (gauge height = 0) Elevation (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 NULL NULL 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: U.S. Geological Survey (USGS) Data and Site Info for Big Delta

Additional Information

Long-term Hydrograph

Resources

Hydrologic Resources Text Products Past Precipitation Forecast Precipitation River Forecast Centers River Stage Summary Alaska-Pacific River Forecast Center Inundation Mapping Locations

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