Lakes / Texas / Williamson County

Lakes in Williamson County, Texas

18 lakes counted in Williamson County - the largest is Granger Lake at 4,400 acres.

Lakes Counted

4,400 acres

Largest - Granger Lake

85 ft

Deepest - Lake Georgetown

Williamson County, highlighted, with its largest counted lakes dotted. Outlines from Census boundary data.

All Counted Lakes

#	Lake	County	Surface Area	Max Depth
1	Granger Lake	Williamson	4,400 acres	50 ft
2	Lake Georgetown	Williamson	1,297 acres	85 ft
3	Soil Conservation Service Site 14 Reservoir	Williamson	79.57 acres	-
4	Lake Will Wilson	Williamson	48.19 acres	-
5	Soil Conservation Service Site 3 Reservoir	Williamson	47.69 acres	-
6	Soil Conservation Service Site 16 Reservoir	Williamson	38.8 acres	-
7	Soil Conservation Service Site 25 Reservoir	Williamson	38.3 acres	-
8	Soil Conservation Service Site 17 Reservoir	Williamson	36.32 acres	-
9	Soil Conservation Service Site 1 Reservoir	Williamson	34.59 acres	-
10	Ganzert Lake	Williamson	33.05 acres	-
11	Soil Conservation Service Site 29 Reservoir	Williamson	32.62 acres	-
12	Soil Conservation Service Site 31 Reservoir	Williamson	32.62 acres	-
13	Site Number Twentytwo	Williamson	32.37 acres	-
14	Site Number Four A	Williamson	30.89 acres	-
15	Muir Lake	Williamson	29.65 acres	-
16	Soil Conservation Service Site 13a Reservoir	Williamson	29.41 acres	-
17	Site Number Eighteen	Williamson	27.68 acres	-
18	Soil Conservation Service Site 18 Reservoir	Williamson	25.95 acres	-

Sources: Texas Parks and Wildlife Department lake data; USGS. Verified October 30, 2026.