Lakes / Idaho / Bear Lake County / Montpelier Reservoir
Montpelier Reservoir, Idaho
120.97 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Idaho
42.36 degrees N, 111.17 degrees W - Bear Lake County. State and county outlines drawn from Census boundary data; the lake marker is placed by its USGS National Hydrography Dataset coordinates, not by eye. Schematic - not a survey map.
How Montpelier Reservoir Stacks Up
- Larger than 62% of the 316 lakes counted in Idaho.
- About 90 miles from Idaho Falls, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Merkley Lake | Bear Lake | 13 mi | 46.13 acres |
| Mud Lake | Bear Lake | 16 mi | 3,486.45 acres |
| Oneida Narrows Reservoir | Franklin | 29 mi | 429.96 acres |
| Alexander Reservoir | Caribou | 32 mi | 1,007.26 acres |
| Glendale Reservoir | Franklin | 35 mi | 207.57 acres |
| Strongarm Reservoir Number One | Franklin | 36 mi | 150.98 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Montpelier Reservoir
How Big Is Montpelier Reservoir?
Montpelier Reservoir covers 120.97 acres in Bear Lake County, Idaho.
What Is the Largest Lake in Bear Lake County?
Mud Lake is the largest lake in Bear Lake County, at 3,486.45 acres.
Largest Lakes in Idaho
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Lake Pend Oreille | Bonner | 92,764.44 acres | - |
| 2 | American Falls Reservoir | Power | 55,319.78 acres | - |
| 3 | Coeur d'Alene Lake | Kootenai | 26,891.64 acres | - |
| 4 | Lake Cascade | Valley | 25,043.4 acres | - |
| 5 | Priest Lake | Bonner | 23,425.59 acres | - |
All 316 Idaho lakes ranked by surface area
Sources: USGS National Hydrography Dataset (The National Map) lake data (ID 43990666). Verified October 30, 2026.