Web Portal Changes: The Advanced Hydrologic Prediction Service (AHPS) hosted at https://water.weather.gov will be replaced by the National Water Prediction Service (NWPS), with a target of March 2024. Existing AHPS content and features will be preserved and expanded within NWPS.

Experimental National Water Center Products: The National Hydrologic Discussion, Area Hydrologic Discussion, and Flood Hazard Outlook, and real-time geospatial services depicting River Forecast Center and National Water Model forecasts, continue to be accessible via https://www.weather.gov/owp/operations, as described in the StoryMap here.

Weather Forecast Office Grand Junction, CO

Colorado Basin River Forecast Center

Flood Advisory

Hydrograph

River at a Glance

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Probability Information Weekly Chance of Exceeding Levels Not Available Chance of Exceeding Levels During Entire Period Not Available Short-term Probabilistic Guidance (Experimental) Not Available

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Printable Image About this graph Tabular Data (UTC) Tabular Data (MDT) Datum: NGVD29 Metadata

NOTE: Gauge reading may be affected by ice. Forecast flows are unadjusted for ice. Reliability of the Forecast: Based on current and forecast river, weather and reservoir conditions NOTE: Forecasts for the Gunnison River near Somerset are issued routinely year-round.

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Upstream Gauge

Downstream Gauge

Flood Categories (in feet) Major Flood Stage: 11 Moderate Flood Stage: 9 Flood Stage: 8 Action Stage: 7 Low Stage (in feet): -9999 Historic Crests (1) 8.20 ft on 06/30/1984 (2) 7.67 ft on 05/27/1993 (3) 6.75 ft on 06/30/1985 (4) 6.73 ft on 05/28/1979 (5) 6.64 ft on 06/30/1983 Show More Historic Crests (P): Preliminary values subject to further review. Recent Crests (1) 3.12 ft on 06/04/2021 (2) 3.42 ft on 02/24/2021 (3) 3.52 ft on 05/19/2020 (4) 4.96 ft on 06/09/2019 (5) 3.51 ft on 05/11/2018 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 www.floodsmart.gov. Show FEMA's National Flood Hazard Layers FEMA's National Flood Hazard Layers not showing? Why aren't the FEMA National Flood Hazard Layers showing on the ESRI Map? Possible reasons: There are no FEMA National Flood Hazard Layers for the location which you are viewing on ESRI Maps. The FEMA Web Mapping Service (WMS) is down. Note: Your zoom level may have changed. ESRI's zoom levels must be between 14 and 16 to show National Flood Hazard layers.

Zoom Level:16 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

If you notice any errors in the below information, please contact our Webmaster
12.4	Water will reach base of bridge on County Road 12 near Paonia Dam.
11	Residential flooding near the river in and around Somerset is possible.
10	Floodwaters will approach the base of the bridge in Somerset. Water will reach the gage house.
9	Water will inundate portions of Highway 133 near Paonia Dam.
8	Significant flooding of agricultural lands is likely.
7	Minor to moderate low land flooding is likely adjacent to the river. Some bank erosion is also possible.
6	Minor agricultural and low land flooding can be expected downstream of the reach.

About This Location

Latitude: 38.925823° N, Longitude: 107.434221° W, Horizontal Datum: NAD83/WGS84 River Stage Reference Frame Gauge Height Flood Stage Uses NWS stage 0 ft 8 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 6280 ft 6288 ft Older USGS topographic maps, NGVD29 benchmarks MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks Other 6280 ft 6288 ft   Current/Historical Observations: U.S. Geological Survey (USGS) Data and Site Info for Somerset

Resources

Hydrologic Resources Text Products Past Precipitation Forecast Precipitation River Forecast Centers River Stage Summary Inundation Mapping Locations

Additional Resources Area Hydrographs NWS Precipitation and River Forecasting AHPS Iframes for Developers Mobile iNWS for emergency management Snow Information

Collaborative Agencies 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 Grand Junction Weather Forecast Office 2844 Aviators Way Grand Junction, CO 81506 (970) 243-7007 Ask Questions/Webmaster Page last modified: 2-Nov-2020 7:28 PM Disclaimer Credits Glossary Privacy Policy About Us Career Opportunities