Lakes / Ohio / Williams County
Lakes in Williams County, Ohio
9 lakes counted in Williams County - the largest is Lake Seneca at 251 acres.
9
Lakes Counted
251 acres
Largest - Lake Seneca
75 ft
Deepest - McKarns Lake
Williams County, highlighted, with its largest counted lakes dotted. Outlines from Census boundary data.
All Counted Lakes
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Lake Seneca | Williams | 251 acres | None |
| 2 | Nettle Lake | Williams | 115 acres | 27 ft |
| 3 | Lake La Su An | Williams | 79 acres | 40 ft |
| 4 | McKarns Lake | Williams | 40 acres | 75 ft |
| 5 | Browns Recreation Lake | Williams | 33.6 acres | None |
| 6 | Barton Lake | Williams | 19 acres | 42 ft |
| 7 | La Su An Lavere | Williams | 15 acres | 15 ft |
| 8 | La Su An Sue | Williams | 10 acres | 15 ft |
| 9 | La Su An Ann | Williams | 5 acres | 12 ft |
Sources: Ohio DNR lake data; USGS. Verified October 28, 2026.