FloodZoneMap.org

Flash Flood — Fremont, WY

Jun 3, 2017

An abnormally high snow pack melted with the warmer temperatures in June and brought flooding along the Middle Fork of the Popo Agie River. The river gauge in Sinks Canyon was above flood stage for a few weeks. However, most of the flooding remained over low lying areas near the River and caused little or no property damage. Some trails in Sinks Canyon Park were closed at times due to high water however.

Source: NOAA National Weather Service Storm Events Database (event 704227). Narrative written by NWS staff at the time of the event.

Flood Risk Context for Fremont, WY

This event is one of many recorded floods in Fremont County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.

View Fremont County flood data →

More Flood Stories

Flood1 death$10K damage

Fremont, WY · Feb 21, 2017

On February 21st temperatures warmed into the 50s across much of the Wind River Basin, this, combined with rain led to rapid melting of snow and led to flooding of ditches along roads as well as sheet flooding across portions of Fremont County north of Riverton.

Read the full account →
Flash Flood$20K damage

Fremont, WY · Jul 30, 2025

During the late evening of July 30, 2025, numerous thunderstorms developed over the Moneta area to the east of Shoshoni, WY and to the north of Highway 20/26.

Read the full account →
Flood$2.0M damage

Fremont, WY · Jun 4, 2017

The combination of a very wet and snowy winter and a rather cool and wet spring set the stage for a prolonged period of flooding along the Wind River.

Read the full account →
Flood$1.2M damage

Fremont, WY · May 7, 2016

An extremely slow-moving area of low pressure brought significant rainfall to the Wind River Basin during a 48-hour period from Friday evening, May 6, through Sunday evening, May 8.

Read the full account →