Launch Conditions
Use cautionLaunch with caution — limited daylight.
- Advisories
- None active
- Daylight
- Past sunset (8:55 PM)
Live from the National Weather Service, USGS, and NOAA. A guide, not a substitute for official forecasts and your own judgment.
Launch Light & Moon — July 27
local timeFull Moon (98% illuminated). Peak fishing window — solunar theory puts fish most active around the new and full moon.
Location
Quick Facts: Otter Creek
| Location | Montana |
|---|---|
| Waterbody | Boulder River |
| Access Type | Public - Free |
| Coordinates | 45.855088, -109.915750 |
| Hours | Check on site |
| County | Sweet Grass |
Otter Creek is a public boat launch providing access to Boulder River in Montana at coordinates 45.85509, -109.91575. Data published by Montana Fish, Wildlife and Parks (MT FWP).
Otter Creek is a public boat launch on Boulder River in Sweet Grass County, Montana. As a public launch it is open to all boaters; state- and county-run ramps like this are typically free or charge only a modest day-use fee. This page shows sunrise, sunset, and moon-phase times for the launch, updated automatically. There are 6 other mapped boat ramps within about 15 miles if conditions here aren't right.
Related: boat launch in Sweet Grass • fishing access on Boulder River • Montana boat launch
Explore more boat launches across Montana
Buying or selling a boat?
Decode any boat's HIN free, or run a full $9.99 history report before you buy.
Frequently Asked Questions About Otter Creek
Is Otter Creek free to use?
Yes, Otter Creek is a public boat launch with free access in Montana.
What water does Otter Creek access?
Otter Creek provides boat launch access to Boulder River in Montana.
How do I get to Otter Creek?
Otter Creek is located at coordinates 45.855088, -109.915750 in Montana. Use the "Get Directions" buttons on this page to navigate with Google Maps or Apple Maps.
Get Directions
Navigate directly to this boat launch using your preferred mapping service:
Alternative Boat Launches Nearby
The area surrounding Otter Creek includes 6 other public boat ramps within 10.0 mi, giving boaters flexibility in choosing their access point.