Lakes / Idaho / Nez Perce County / Mann Lake
Mann Lake, Idaho
136.9 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Idaho
46.37 degrees N, 116.85 degrees W - Nez Perce 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 Mann Lake Stacks Up
- Larger than 65% of the 316 lakes counted in Idaho.
- The largest lake in Nez Perce County among those counted.
- About 90 miles from Coeur d'Alene, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Lake Waha | Nez Perce | 11 mi | 92.17 acres |
| Lapwai Lake | Lewis | 15 mi | 88.22 acres |
| Soldiers Meadow Reservoir | Nez Perce | 16 mi | 113.77 acres |
| Spring Valley Reservoir | Latah | 29 mi | 51.4 acres |
| Moose Creek Reservoir | Latah | 40 mi | 30.89 acres |
| Dworshak Reservoir | Clearwater | 40 mi | 16,362.33 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Mann Lake
How Big Is Mann Lake?
Mann Lake covers 136.9 acres in Nez Perce County, Idaho.
What Is the Largest Lake in Nez Perce County?
Mann Lake is the largest lake in Nez Perce County, at 136.9 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 44475155). Verified October 30, 2026.