FloodZoneMap.org

Flash Flood — Summit, CO

Jul 18, 2011

Thunderstorms produced very heavy rain and continuous lightning over Summit County. The historic rainstorm in the town of Breckenridge produced 3.17 inches of rain at local weather station, most of the rain fell in less than 3 hours. A cooperative observer with the National Weather Service also recorded 3.59 inches of rainfall in east Breckenridge. The highest recorded 24-hr rainfall prior to this event occurred in the early 1890s when 2.6 inches was observed. Nearly 3,900 cloud to ground li

Source: NOAA National Weather Service Storm Events Database (event 338822). Narrative written by NWS staff at the time of the event.

Flood Risk Context for Summit, CO

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

View Summit County flood data →

More Flood Stories

Flash Flood4 deaths$500K damage

Larimer, CO · Jul 20, 2021

A deadly debris flow from the Cameron Peak burn area, struck Black Hollow Gulch west of Rustic on CO-14. The debris flow, estimated to be 5 to 8 feet deep, destroyed 6 homes and other structures. Four people were killed when their residence was swept away by the floodwaters.

Read the full account →
Flash Flood3 deaths

Boulder, CO · Sep 11, 2013

A deep southerly flow over Colorado, ahead of a near stationary low pressure system over the Great Basin, pumped copious amounts of monsoonal moisture into the area. In addition, a weak stationary front stretched along the Front Range Foothills and Palmer Divide.

Read the full account →
Flash Flood2 deaths$250K damage

Larimer, CO · Jul 15, 2022

Two people were killed after heavy rain which produced a destructive debris flow in the Cameron Peak burn area. The 37-yr old woman and her 12-yr old daughter were in a camp trailer that was swept away at Calcite Road along Sheep Creek.

Read the full account →
Flash Flood2 deaths$520K damage

Jefferson, CO · Jul 12, 1996

Very heavy rain from a fast moving thunderstorm dumped 2 to 3 inches of rain within an hour over southern Jefferson County. Two people were killed near the town of Buffalo Creek when a 20-ft wall of water blasted through the area.

Read the full account →