Natural Disaster Risk in Green River

Natural Hazard Profile: Green River, Wyoming

Green River, in Sweetwater County, is a city of approximately 12,012 residents situated in the Great Plains. Its semi-arid climate brings high winds, cold winters, and significant snowfall at elevation, and in particular blizzards and rapid weather changes. These conditions collectively define the natural hazard environment that Green River residents and property owners must navigate.

According to FEMA's National Risk Index, Green River carries an overall risk score of 5.0/10, placing it in the moderate category. Landslide and debris flow risk tops the local hazard profile, with steep terrain and periodic heavy rainfall creating conditions for rapid slope failure in vulnerable areas. The area also faces notable exposure to winter and avalanche.

Within Wyoming, Green River's risk is, near the 5.3/10 state average. Nationally, it ranks near the U.S. national average of 4.5/10. FEMA's analysis of Sweetwater County identifies landslide as the foremost hazard, followed by winter and avalanche. These rankings reflect the relative frequency and severity of each hazard type in the local environment.

With a moderate risk rating, Green River residents are well-served by maintaining standard preparedness practices — an emergency supply kit, awareness of local hazard seasonality, and insurance that covers the top local risks. Periodic review of coverage for landslide is recommended.