Big Thompson River (CO) at Loveland, CO
River level and flood forecast · Larimer County
Normal0.6 ftas of Mon 1:30 PM
The river is 9.4 ft below flood stage (10 ft).
Flow: 5 cubic feet per second (USGS).
The last 7 days and the forecast
NWS forecast issued Sun, Dec 31, 5 PM. Forecasts change as rain falls and as upstream water arrives.
Flood stages
| Major flood stage | 11.5 ft |
| Moderate flood stage | 11 ft |
| Flood stage | 10 ft |
| Action stage | 9 ft |
| Record crest (September 13, 2013) | 11.93 ft |
What floods at each level
From the National Weather Service, highest first.
- 12 ftExtensive, life-threatening flooding occurs with roads crossing the Big Thompson River likely impassable. This level represents a flood that has a 1-percent chance of being equaled or exceeded in any given year. For more information click <a href="inundation/faq_google.php">here</a>.
- 11.5 ftWidespread, major flooding occurs with many roads, homes and businesses impacted. This level represents a flood that has a 2-percent chance of being equaled or exceeded in any given year. For more information click <a href="inundation/faq_google.php">here</a>.
- 11 ftNumerous streets along and bridges crossing the Big Thompson River in Loveland flood.
- 10.5 ftLincoln Avenue, Rossum Drive, 1st Street, Railroad Avenue, and the railroad tracks near the Big Thompson River are overtopped. This level represents a flood that has a 10-percent chance of being equaled or exceeded in any given year. For more information click <a href="inundation/faq_google.php">here</a>.
- 10 ftLow lying roads along the river in Loveland begin to be impacted by flooding.
- 9 ftThe river overflows its banks in several areas including Barnes Park.
Highest crests on record
- 11.93 ft — September 13, 2013
- 10.48 ft — April 30, 1999
- 10.1 ft — April 30, 1980
- 9.73 ft — May 30, 1995
- 8.23 ft — August 11, 1994
Recent crests: 4.61 ft (June 7, 2021) · 3.66 ft (June 1, 2020) · 2.97 ft (June 8, 2019) · 2.89 ft (May 28, 2018) · 3.47 ft (June 23, 2017)
Up and down the river, and nearby
- Cache La Poudre River (CO) at Fort Collins, CO
- Saint Vrain Creek below Longmont, CO
- South Platte River at Fort Lupton, CO
- Boulder Creek (CO) at North 75TH St., CO
- North Fork Cache La Poudre River below Halligan Reservoir, CO
- Sand Creek (CO) near Commerce City, CO
- Colorado River below Bakers Gulch, CO
- Clear Creek (CO) at Golden, CO
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (BTLC2); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.