Launch Conditions
Use cautionLaunch with caution — limited daylight.
- Advisories
- None active
- Daylight
- Past sunset (8:51 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 — August 2
local timeWaning Gibbous (85% illuminated). Good fishing outlook — the moon is approaching a major phase.
Location
Quick Facts: Buttermilk
| Location | Idaho |
|---|---|
| Waterbody | Island Park Reservoir |
| Access Type | Public - Free |
| Coordinates | 44.432494, -111.426098 |
| Hours | Check on site |
| County | Fremont |
Buttermilk is a public boat launch providing access to Island Park Reservoir in Idaho at coordinates 44.43249, -111.42610. Data published by Idaho Department of Fish and Game (ID IDFG).
Buttermilk is a public boat launch on Island Park Reservoir in Fremont County, Idaho. 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 Fremont • fishing access on Island Park Reservoir • Idaho boat launch
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Frequently Asked Questions About Buttermilk
Is Buttermilk free to use?
Yes, Buttermilk is a public boat launch with free access in Idaho.
What water does Buttermilk access?
Buttermilk provides boat launch access to Island Park Reservoir in Idaho.
How do I get to Buttermilk?
Buttermilk is located at coordinates 44.432494, -111.426098 in Idaho. Use the "Get Directions" buttons on this page to navigate with Google Maps or Apple Maps.
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Alternative Boat Launches Nearby
The area surrounding Buttermilk includes 6 other public boat ramps within 2.3 mi, giving boaters flexibility in choosing their access point.