Lakes / Illinois / Randolph County / City Reservoir
City Reservoir, Illinois
33.36 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Illinois
38.20 degrees N, 89.62 degrees W - Randolph 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 City Reservoir Stacks Up
- Larger than 18% of the 511 lakes counted in Illinois.
- About 39 miles from Carbondale, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| New City Reservoir | Randolph | 5.9 mi | 45.47 acres |
| Old City Reservoir | Randolph | 7.8 mi | 26.09 acres |
| West C Streamline Lake | Randolph | 10.0 mi | 99.34 acres |
| East C Streamline Lake | Perry | 10 mi | 131.21 acres |
| Pinckneyville Reservoir | Perry | 13 mi | 186.56 acres |
| Baldwin Lake | Randolph | 13 mi | 1,874.85 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About City Reservoir
How Big Is City Reservoir?
City Reservoir covers 33.36 acres in Randolph County, Illinois.
What Is the Largest Lake in Randolph County?
Baldwin Lake is the largest lake in Randolph County, at 1,874.85 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 98656168). Verified October 30, 2026.