Major Flood
11 ft
Current Water Level
Gage Height
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Streamflow
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Last Reading
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This is an NWS forecast point (LID: BIMC2). Live data may be limited. View on NWS AHPS →
FLOOD STAGES
Know the flood categories.
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
Moderate Flood
9 ft
Minor Flood
7.5 ft
Action Stage
6.5 ft
What Floods at Each Level
12.5 ft
This is a major, life threatening flood. There is extensive inundation of houses and severe damage to Highway 34 in Big Thompson Canyon.
11 ft
This is a major, life threatening flood with extensive flooding and damage to Highway 34 in Big Thompson Canyon.
9 ft
A number of private bridges crossing the Big Thompson River flood.
8.5 ft
Water floods several houses west of Marianna Butte. Sylvan Dale Ranch near Cedar Cove is flooded.
7.5 ft
Houses flood west of the Highway 31D Bridge off of County Road 22H.
7 ft
Water spills into the Riverview Campground.
6.5 ft
Water flows into low lying areas along the river near Cedar Cove.
Impact statements from the National Weather Service, describing what typically happens at each water level.
7-Day Water Level Chart
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Historic Crests
| Date | Stage | Flow |
|---|---|---|
| May 31, 2014 | 6.43 ft | 1,890 cfs |
| Jun 6, 2021 | 6.25 ft | 1,160 cfs |
| Jun 2, 2020 | 6.18 ft | 1,200 cfs |
About This Gauge
NWS LID
BIMC2
River
Big Thompson River (CO)
County
Larimer, CO
Coordinates
40.4149°N, 105.2510°W
Get Flood Alerts for Big Thompson River (CO)
StormCast monitors this gauge and sends a push notification to your phone when the water level crosses into a new flood category — even at 3 AM.
Frequently Asked Questions
What is the current water level of Big Thompson River (CO) at Cedar Cove?
The Big Thompson River (CO) at Cedar Cove gauge is maintained by USGS and reports water levels every 15 minutes. Visit this page to see the latest reading updated live, or download StormCast to get push alerts when levels rise.
What is flood stage for Big Thompson River (CO) at Cedar Cove?
The NWS-defined flood stage for Big Thompson River (CO) at Cedar Cove is 7.5 feet. Action stage begins at 6.5 feet. Moderate flooding starts at 9 feet, and major flooding at 11 feet.
How do I get alerts when Big Thompson River (CO) rises?
Download StormCast free on Google Play, go to River Gauges, and add Big Thompson River (CO) at Cedar Cove to your watchlist. StormCast will send a push notification to your phone whenever the water level crosses into a new NWS flood category.
Where is the Big Thompson River (CO) at Cedar Cove gauge located?
The gauge is located in Larimer County, Colorado at coordinates 40.4149°N, 105.2510°W. Data is provided by the U.S. Geological Survey and the National Weather Service.
More Gauges on Big Thompson River (CO)
On This River
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Source & Notes
Data provided by: CO Division of Water Resources
- Gauge reading affected by reservoir operations.
- Stage may be affected by ice during winter months.