Lakes in Siskiyou County, California

42 lakes counted in Siskiyou County - the largest is Tule Lake at 7,403 acres.

Lakes Counted

7,403 acres

Largest - Tule Lake

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

All Counted Lakes

#	Lake	County	Surface Area	Max Depth
1	Tule Lake	Siskiyou	7,403 acres	-
2	Tule Lake	Siskiyou	3,396 acres	-
3	Meiss Lake	Siskiyou	2,035 acres	-
4	Lower Klamath Lake Sump	Siskiyou	1,952 acres	-
5	Lower Klamath Lake	Siskiyou	1,337 acres	-
6	Copco Lake	Siskiyou	994 acres	-
7	Iron Gate Reservoir	Siskiyou	948 acres	-
8	Lower Klamath Lake Sump	Siskiyou	848 acres	-
9	Sheepy Lake	Siskiyou	840 acres	-
10	Lake Shastina	Siskiyou	675 acres	-
11	Indian Tom Lake	Siskiyou	462 acres	-
12	Medicine Lake	Siskiyou	442 acres	-
13	Lake Siskiyou	Siskiyou	434 acres	-
14	Barnum Flat Reservoir	Siskiyou	391 acres	-
15	Lower Klamath Lake	Siskiyou	231 acres	-
16	Steamboat Lake	Siskiyou	193 acres	-
17	Trout Lake	Siskiyou	143 acres	-
18	Bass Lake	Siskiyou	82 acres	-
19	Orr Lake	Siskiyou	79 acres	-
20	Caribou Lake	Siskiyou	71 acres	-
21	Ukonom Lake	Siskiyou	65 acres	-
22	Red Rock Lakes	Siskiyou	63 acres	-
23	Cliff Lake	Siskiyou	56 acres	-
24	Juanita Lake	Siskiyou	56 acres	-
25	Bonita Lake	Siskiyou	55 acres	-
26	Big Lake	Siskiyou	54 acres	-
27	Dwight Hammond Reservoir	Siskiyou	54 acres	-
28	Castle Lake	Siskiyou	49 acres	-
29	Hancock Lake	Siskiyou	43 acres	-
30	Red Rock Lakes	Siskiyou	42 acres	-
31	White Deer Lake	Siskiyou	40 acres	-
32	Campbell Lake	Siskiyou	38 acres	-
33	Souza Lake	Siskiyou	37 acres	-
34	East Boulder Lake	Siskiyou	32 acres	-
35	Tule Lake	Siskiyou	32 acres	-
36	Barton Lake	Siskiyou	29 acres	-
37	Big Duck Lake	Siskiyou	29 acres	-
38	Deadfall Lakes	Siskiyou	28 acres	-
39	Greenhorn Reservoir	Siskiyou	27 acres	-
40	Little Crater Lake	Siskiyou	27 acres	-
41	Toad Lake	Siskiyou	26 acres	-
42	Jackson Lake	Siskiyou	25 acres	-

Sources: USGS National Hydrography Dataset lake data; USGS. Verified October 30, 2026.