Lakes in Adams County, Washington

19 lakes counted in Adams County - the largest is Sprague Lake at 1,760 acres.

Lakes Counted

1,760 acres

Largest - Sprague Lake

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

All Counted Lakes

#	Lake	County	Surface Area	Max Depth
1	Sprague Lake	Adams	1,760 acres	About 15 ft
2	Cow Lake	Adams	199 acres	-
3	Twelvemile Lake	Adams	174 acres	-
4	Alkali Lake	Adams	118 acres	-
5	Fourth of July Lake	Adams	101 acres	-
6	Royal Lake	Adams	87 acres	-
7	Palm Lake	Adams	85 acres	-
8	Campbell Lake	Adams	79 acres	-
9	Green Lake	Adams	78 acres	-
10	Twelvemile Lake	Adams	69 acres	-
11	Hutchinson Lake	Adams	49 acres	-
12	Twelvemile Lake	Adams	41 acres	-
13	Morgan Lake	Adams	36 acres	-
14	Shiner Lake	Adams	32 acres	-
15	Finnell Lake	Adams	32 acres	-
16	Hallin Lake	Adams	31 acres	-
17	Black Lake	Adams	26 acres	-
18	Halfmoon Lake	Adams	25 acres	-
19	Herman Lake	Adams	24 acres	-

Sources: Washington DFW lake data; USGS. Verified October 30, 2026.