Lakes in Grant County, Washington

63 lakes counted in Grant County - the largest is Banks Lake at 26,879 acres.

Lakes Counted

26,879 acres

Largest - Banks Lake

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

All Counted Lakes

#	Lake	County	Surface Area	Max Depth
1	Banks Lake	Grant	26,879 acres	-
2	Wanapum Lake	Grant	14,362 acres	-
3	Potholes Reservoir	Grant	14,292 acres	-
4	Moses Lake	Grant	6,716 acres	About 36 ft
5	Lenore Lake	Grant	1,406 acres	-
6	Billy Clapp Lake	Grant	973 acres	-
7	Soap Lake	Grant	844 acres	About 90 ft
8	Saddle Mountain Lake	Grant	582 acres	-
9	Blue Lake	Grant	534 acres	About 65 ft
10	Brook Lake	Grant	428 acres	-
11	Park Lake	Grant	338 acres	About 85 ft
12	Osborn Bay Lake	Grant	321 acres	-
13	Alkali Lake	Grant	299 acres	About 12 ft
14	Evergreen Reservoir	Grant	247 acres	About 50 ft
15	Winchester Wasteway	Grant	241 acres	-
16	Winchester Wasteway	Grant	165 acres	-
17	Soda Lake	Grant	154 acres	About 120 ft
18	Red Rock Lake	Grant	154 acres	-
19	Nunnally Lake	Grant	139 acres	About 30 ft
20	Black Lake	Grant	138 acres	-
21	Trail Lake	Grant	130 acres	-
22	Upper Goose Lake	Grant	130 acres	About 95 ft
23	Deep Lake	Grant	101 acres	About 115 ft
24	Round Lake	Grant	99 acres	-
25	Dry Falls Lake	Grant	94 acres	-
26	Crescent Bay	Grant	92 acres	-
27	Little Soap Lake	Grant	80 acres	-
28	Lenice Lake	Grant	76 acres	-
29	Flat Lake	Grant	74 acres	-
30	Long Lake	Grant	73 acres	About 90 ft
31	Corral Lake	Grant	71 acres	-
32	Burke Lake	Grant	69 acres	About 27 ft
33	Canal Lake	Grant	69 acres	About 70 ft
34	Black Rock Lake	Grant	66 acres	-
35	Lower Goose Lake	Grant	65 acres	About 75 ft
36	Sand Hollow Lake	Grant	56 acres	-
37	Quincy Lake	Grant	54 acres	About 20 ft
38	Stan Coffin Lake	Grant	53 acres	About 10 ft
39	Hampton Lake	Grant	52 acres	-
40	Dusty Lake	Grant	41 acres	-
41	Moran Slough	Grant	39 acres	-
42	Pit Lakes	Grant	39 acres	-
43	Coulee Lake	Grant	38 acres	-
44	South Willow Lake	Grant	37 acres	-
45	Blythe Lake	Grant	37 acres	-
46	Sand Lake	Grant	36 acres	-
47	Thompson Lake	Grant	33 acres	About 25 ft
48	Hillton Lake	Grant	33 acres	-
49	Artesian Lake	Grant	30 acres	-
50	Windmill Lake	Grant	30 acres	About 50 ft
51	Marsh Unit One	Grant	29 acres	-
52	Chukar Lake	Grant	22 acres	-
53	North Teal Lake	Grant	22 acres	-
54	South Teal Lake	Grant	21 acres	-
55	Heart Lake	Grant	18 acres	-
56	Perch Lake	Grant	16 acres	-
57	Martha Lake	Grant	16 acres	-
58	Widgeon Lake	Grant	15 acres	-
59	Pillar Lake	Grant	10 acres	-
60	Northrup Lake	Grant	2 acres	-
61	Cliff Lake	Grant	2 acres	-
62	Cup Lake	Grant	1 acres	-
63	Crystal Lake	Grant	1 acres	-

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