Lakes / Illinois / Hancock County / Augusta Lake
Augusta Lake, Illinois
26.69 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Illinois
40.26 degrees N, 90.92 degrees W - Hancock 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 Augusta Lake Stacks Up
- Larger than 5% of the 511 lakes counted in Illinois.
- About 75 miles from Springfield, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Colmar Lake | McDonough | 6.1 mi | 25.2 acres |
| Argyle Lake | McDonough | 15 mi | 92.91 acres |
| Linda Lake | Hancock | 15 mi | 39.54 acres |
| Carthage Lake | Hancock | 17 mi | 42.5 acres |
| Spring Lake | McDonough | 20 mi | 251.55 acres |
| Camp Saukenauk Lake | Adams | 22 mi | 33.06 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Augusta Lake
How Big Is Augusta Lake?
Augusta Lake covers 26.69 acres in Hancock County, Illinois.
What Is the Largest Lake in Hancock County?
Rocky Run Lake is the largest lake in Hancock County, at 43.74 acres.
Largest Lakes in Illinois
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Carlyle Lake | Clinton | 22,796.77 acres | - |
| 2 | Mine Number 21 Reservoir | Franklin | 17,062.04 acres | - |
| 3 | Upper Peoria Lake | Woodford | 15,460.64 acres | - |
| 4 | Lake Shelbyville | Shelby | 10,235.1 acres | - |
| 5 | Crab Orchard Lake | Williamson | 7,292.57 acres | - |
All 511 Illinois lakes ranked by surface area
Sources: USGS National Hydrography Dataset (The National Map) lake data (ID 154232858). Verified October 30, 2026.