Lakes / Illinois / Jersey County / Deep Lake
Deep Lake, Jersey County, Illinois
128.25 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Illinois
39.06 degrees N, 90.57 degrees W - Jersey 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 Deep Lake Stacks Up
- Larger than 66% of the 511 lakes counted in Illinois.
- About 70 miles from Springfield, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Upper Stump Lake | Jersey | 3.3 mi | 840.65 acres |
| Lower Stump Lake | Calhoun | 5.3 mi | 182.12 acres |
| Watson Lake | Calhoun | 6.0 mi | 353.61 acres |
| Gilbert Lake | Calhoun | 7.3 mi | 220.67 acres |
| Strator Pond | Calhoun | 8.1 mi | 177.67 acres |
| Silver Lake | Calhoun | 8.2 mi | 270.83 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Deep Lake
How Big Is Deep Lake?
Deep Lake covers 128.25 acres in Jersey County, Illinois.
What Is the Largest Lake in Jersey County?
Upper Stump Lake is the largest lake in Jersey County, at 840.65 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 156106375). Verified October 30, 2026.