Lakes / Colorado / Jefferson County

Lakes in Jefferson County, Colorado

34 lakes counted in Jefferson County - the largest is Chatfield Lake at 1,389 acres.

Lakes Counted

1,389 acres

Largest - Chatfield Lake

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

All Counted Lakes

#	Lake	County	Surface Area	Max Depth
1	Chatfield Lake	Jefferson	1,389 acres	-
2	Standley Lake	Jefferson	1,221 acres	-
3	Cheesman Lake	Jefferson	885 acres	-
4	Wellington Lake	Jefferson	175 acres	-
5	Blunn Reservoir	Jefferson	163 acres	-
6	Ralston Reservoir	Jefferson	154 acres	-
7	Great Western Reservoir	Jefferson	142 acres	-
8	Bowles Reservoir Number One	Jefferson	135 acres	-
9	Bear Creek Lake	Jefferson	103 acres	-
10	Soda Lakes	Jefferson	81 acres	-
11	Strontia Springs Reservoir	Jefferson	81 acres	-
12	Hyatt Lake	Jefferson	70 acres	-
13	Tucker Lake	Jefferson	67 acres	-
14	Johnson Reservoir	Jefferson	60 acres	-
15	Ward Reservoir Number 1	Jefferson	59 acres	-
16	Leyden Lake	Jefferson	57 acres	-
17	Crown Hill Lake	Jefferson	56 acres	-
18	Upper Long Lake	Jefferson	53 acres	-
19	Maple Grove Reservoir	Jefferson	49 acres	-
20	Harriman Lake	Jefferson	47 acres	-
21	Smith Reservoir	Jefferson	47 acres	-
22	Main Reservoir	Jefferson	43 acres	-
23	Rocky Flats Lake	Jefferson	43 acres	-
24	Hine Lake	Jefferson	42 acres	-
25	Evergreen Lake	Jefferson	41 acres	-
26	Fairmount Reservoir	Jefferson	39 acres	-
27	Lake Rhoda	Jefferson	39 acres	-
28	Bergen East Reservoir	Jefferson	38 acres	-
29	Lake Arbor	Jefferson	37 acres	-
30	Lower Church Lake	Jefferson	35 acres	-
31	Pomona Lake Number 1	Jefferson	33 acres	-
32	Bergen West Reservoir	Jefferson	32 acres	-
33	Kendrick Reservoir	Jefferson	30 acres	-
34	Soda Lakes	Jefferson	25 acres	-

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