
Larson Reservoir
Larson Reservoir, located in Carter County, Montana, spans an impressive 289.4 acres and sits at an elevation of 3,329.2 feet. This expansive body of water is one of the region’s premier destinations for fishing, wildlife observation, and outdoor recreation. Surrounded by rolling prairie and open grasslands, the reservoir offers breathtaking views of southeastern Montana’s rugged landscape, making it an ideal escape for nature lovers and outdoor enthusiasts. Fishing at Larson Reservoir is a highlight for visitors, as the waters are home to a thriving population of rainbow trout. Known for their vibrant colors and spirited fights, rainbow trout provide an exciting challenge for anglers of all skill levels. The reservoir’s size and depth create excellent fishing conditions, allowing for both shoreline casting and boat fishing opportunities. With the right technique, anglers can reel in impressive catches, making Larson Reservoir a prime location for sport fishing in Carter County. Beyond fishing, the reservoir is a haven for wildlife. Waterfowl, including ducks, geese, and pelicans, frequently make their way to the reservoir, creating a dynamic ecosystem along the water’s edge. Raptors such as hawks and eagles can often be seen soaring overhead, while deer and other mammals visit the shoreline to drink. The surrounding habitat, consisting of native grasses and scattered trees, enhances the area’s ecological diversity and provides shelter for a variety of species. Throughout the year, Larson Reservoir undergoes striking seasonal changes that add to its appeal. In the warmer months, the calm waters reflect Montana’s vast blue skies, while the surrounding vegetation thrives with lush greenery. Autumn introduces golden hues across the prairie, offering stunning scenery for photographers and nature enthusiasts. Winter transforms the reservoir with occasional ice cover, creating a peaceful, snow-dusted landscape that showcases Montana’s natural beauty in a whole new light. Larson Reservoir remains one of Carter County’s most cherished outdoor destinations, offering excellent fishing, abundant wildlife, and stunning scenery. Whether casting a line for rainbow trout, observing the diverse array of birds and mammals, or simply soaking in the tranquility of the remote Montana wilderness, visitors will find Larson Reservoir to be a true gem in the heart of the prairie.
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Larson Reservoir
Larson Reservoir, located in Carter County, Montana, spans an impressive 289.4 acres and sits at an elevation of 3,329.2 feet. This expansive body of water is one of the region’s premier destinations for fishing, wildlife observation, and outdoor recreation. Surrounded by rolling prairie and open grasslands, the reservoir offers breathtaking views of southeastern Montana’s rugged landscape, making it an ideal escape for nature lovers and outdoor enthusiasts. Fishing at Larson Reservoir is a highlight for visitors, as the waters are home to a thriving population of rainbow trout. Known for their vibrant colors and spirited fights, rainbow trout provide an exciting challenge for anglers of all skill levels. The reservoir’s size and depth create excellent fishing conditions, allowing for both shoreline casting and boat fishing opportunities. With the right technique, anglers can reel in impressive catches, making Larson Reservoir a prime location for sport fishing in Carter County. Beyond fishing, the reservoir is a haven for wildlife. Waterfowl, including ducks, geese, and pelicans, frequently make their way to the reservoir, creating a dynamic ecosystem along the water’s edge. Raptors such as hawks and eagles can often be seen soaring overhead, while deer and other mammals visit the shoreline to drink. The surrounding habitat, consisting of native grasses and scattered trees, enhances the area’s ecological diversity and provides shelter for a variety of species. Throughout the year, Larson Reservoir undergoes striking seasonal changes that add to its appeal. In the warmer months, the calm waters reflect Montana’s vast blue skies, while the surrounding vegetation thrives with lush greenery. Autumn introduces golden hues across the prairie, offering stunning scenery for photographers and nature enthusiasts. Winter transforms the reservoir with occasional ice cover, creating a peaceful, snow-dusted landscape that showcases Montana’s natural beauty in a whole new light. Larson Reservoir remains one of Carter County’s most cherished outdoor destinations, offering excellent fishing, abundant wildlife, and stunning scenery. Whether casting a line for rainbow trout, observing the diverse array of birds and mammals, or simply soaking in the tranquility of the remote Montana wilderness, visitors will find Larson Reservoir to be a true gem in the heart of the prairie.
Read more detailsCurrent Conditions
Water Temperature
Current Snapshot
Forecast: Tuesday, Apr 29
MostlyClear
Hourly Insights
Temperature
Precipitation
Wind
Sun, Moon & UV
Solunar Fishing Forecast
Todays action is rated a 4 (scale is 0 thru 5, 5 is the best)
8:21 PM - 10:51 PM
6:00 AM - 6:00 AM
12:04 PM - 1:34 PM
6:00 AM - 6:00 AM
Outlook for Tuesday at Larson Reservoir
Expect temperatures ranging from 32°F to 65°F. Skies look mostly clear with little chance of precipitation. Winds will be averaging 8 mph, with potential gusts reaching up to 20 mph. The maximum UV index will be 7 (High), so plan sun protection accordingly. For anglers, today's fishing action is rated 4/5 (Todays action is rated a 4 (scale is 0 thru 5, 5 is the best)). Look for the best bite times during the major periods around 8:21 PM and 6:00 AM, or try the minor windows near 12:04 PM and 6:00 AM for potential early morning or evening action. Check back for the latest conditions and forecasts for Larson Reservoir.
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Water Temperature History
Trends for Larson Reservoir
Current Temp
Latest recorded surface temperature.
Lowest in Period
35°F
On Dec 15
Coldest point in the Last 12 Months.
Average in Period
61°F
Typical temp during the Last 12 Months.
Temperature Trend: Last 12 Months
Surface temperature over the selected period.
Key Observations (Last 12 Months)
- Warmest avg: July (92°F).
- Coolest avg: February (36°F).
- Rapid warming often occurs: June → July (+18°F).
- Sharpest cooling trend: October → November (-18°F).
Weather Forecast
Wind speed and pressure trends
Hourly Wind Forecast
Wind Direction
246°
Pressure
1020 mb
Cloud Cover
1%
Visibility
10 miles
Daily Pressure Forecast


Frequently Asked Questions About Larson Reservoir
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