Lakes / Oregon / Largest Lakes in Oregon

Largest Lakes in Oregon

Ranked by surface area, from USGS National Hydrography Dataset lake data. Flowages and reservoirs count here - size is size - and each is labeled in its own record.

#	Lake	County	Surface Area	Max Depth
1	Upper Klamath Lake	Klamath	62,095 acres	-
2	Lake Umatilla	Morrow	50,042 acres	-
3	Lake Abert	Lake	37,137 acres	-
4	Summer Lake	Lake	31,602 acres	-
5	Harney Lake	Harney	31,290 acres	-
6	Malheur Lake	Harney	27,971 acres	-
7	Lake Bonneville	Hood River	19,452 acres	-
8	Crater Lake	Klamath	13,211 acres	-
9	Lake Owyhee	Malheur	11,120 acres	-
10	Silver Lake	Lake	10,452 acres	-
11	Agency Lake	Klamath	10,319 acres	-
12	Wickiup Reservoir	Deschutes	10,170 acres	-
13	Crump Lake	Lake	8,475 acres	-
14	Mud Lake	Harney	7,922 acres	-
15	Hart Lake	Lake	7,205 acres	-
16	Fern Ridge Lake	Lane	6,581 acres	-
17	Bluejoint Lake	Lake	6,465 acres	-
18	Waldo Lake	Lane	6,064 acres	-
19	Drews Reservoir	Lake	4,694 acres	-
20	Crane Prairie Reservoir	Deschutes	4,380 acres	-
21	Warm Springs Reservoir	Harney	4,139 acres	-
22	Lookout Point Lake	Lane	4,086 acres	-
23	Crescent Lake	Klamath	3,824 acres	-
24	Gerber Reservoir	Klamath	3,812 acres	-
25	Alvord Lake	Harney	3,648 acres	-
26	Flagstaff Lake	Lake	3,633 acres	-
27	Antelope Reservoir	Malheur	3,622 acres	-
28	Detroit Lake	Marion	3,593 acres	-
29	Aspen Lake	Klamath	3,564 acres	-
30	Odell Lake	Klamath	3,416 acres	-
31	Siltcoos Lake	Lane	3,288 acres	-
32	Sturgeon Lake	Multnomah	3,166 acres	-
33	Lake Billy Chinook	Jefferson	3,081 acres	-
34	Diamond Lake	Douglas	3,040 acres	-
35	Davis Lake	Deschutes	3,017 acres	-
36	Prineville Reservoir	Crook	2,861 acres	-
37	Hills Creek Lake	Lane	2,592 acres	-
38	Lost Creek Lake	Jackson	2,523 acres	-
39	Tahkenitch Lake	Douglas	2,325 acres	-
40	Shallow Lake	Harney	2,305 acres	-
41	Hells Canyon Reservoir	Wallowa	2,301 acres	-
42	Campbell Lake	Lake	2,290 acres	-
43	Phillips Lake	Baker	2,246 acres	-
44	Thompson Reservoir	Lake	2,159 acres	-
45	Howard Prairie Lake	Jackson	1,982 acres	-
46	Beulah Reservoir	Malheur	1,844 acres	-
47	Fall Creek Lake	Lane	1,766 acres	-
48	Dorena Lake	Lane	1,664 acres	-
49	Wallowa Lake	Wallowa	1,592 acres	-
50	Cold Springs Reservoir	Umatilla	1,440 acres	-
51	Timothy Lake	Clackamas	1,400 acres	-
52	Paulina Lake	Deschutes	1,371 acres	-
53	Brownlee Reservoir	Baker	1,329 acres	-
54	Coleman Lake	Lake	1,325 acres	-
55	Lake of the Woods	Klamath	1,228 acres	-
56	McKay Reservoir	Umatilla	1,174 acres	-
57	Cultus Lake	Deschutes	1,142 acres	-
58	Tenmile Lake	Coos	1,139 acres	-
59	Cougar Reservoir	Lane	1,130 acres	-
60	Oxbow Reservoir	Baker	1,106 acres	-
61	Henry Hagg Lake	Washington	1,086 acres	-
62	Cottage Grove Lake	Lane	1,076 acres	-
63	Foster Lake	Linn	1,052 acres	-
64	Cow Lakes	Malheur	1,045 acres	-
65	Carty Reservoir	Morrow	1,025 acres	-
66	Cow Lakes	Malheur	998 acres	-
67	Alger Lake	Lake	991 acres	-
68	Upper Campbell Lake	Lake	979 acres	-
69	Stone Corral Lake	Lake	976 acres	-
70	Ochoco Reservoir	Crook	970 acres	-
71	East Lake	Deschutes	969 acres	-
72	Applegate Lake	Jackson	950 acres	-
73	Dry Lake Reservoir	Harney	937 acres	-
74	Swamp Lake	Lake	921 acres	-
75	Unity Reservoir	Baker	921 acres	-
76	Long Lake	Lake	906 acres	-
77	Dexter Reservoir	Lane	884 acres	-
78	Hyatt Reservoir	Jackson	844 acres	-
79	North Tenmile Lake	Coos	830 acres	-
80	Blue River Lake	Lane	814 acres	-
81	Jaca Reservoir	Malheur	814 acres	-
82	Emigrant Lake	Jackson	808 acres	-
83	Woahink Lake	Lane	784 acres	-
84	Jack Lake	Lake	778 acres	-
85	Lake Billy Chinook	Jefferson	772 acres	-
86	Malheur Reservoir	Malheur	760 acres	-
87	Thief Valley Reservoir	Union	751 acres	-
88	Alkali Lake	Klamath	741 acres	-
89	Swan Lake	Klamath	734 acres	-
90	Desert Lake	Lake	732 acres	-
91	Moon Reservoir	Harney	725 acres	-
92	Summit Lake	Klamath	692 acres	-
93	Devils Lake	Lincoln	673 acres	-
94	Fourmile Lake	Klamath	626 acres	-
95	Bully Creek Reservoir	Malheur	611 acres	-
96	North Alkali Lake	Lake	606 acres	-
97	Renner Lake	Lake	572 acres	-
98	Spanish Lake	Lake	561 acres	-
99	Galesville Reservoir	Douglas	558 acres	-
100	Lake Simtustus	Jefferson	553 acres	-

Showing the top 100 of 642 counted lakes. Search above, or browse by county on the Oregon page, for the full inventory.

Source: USGS National Hydrography Dataset lake data. Verified October 30, 2026. New lakes are added as their records are verified - rankings update with every addition.