Missouri Basin and Arkansas-Rio Grande-Texas Gulf Regions

Notice: A map-based version currently in development will be released soon.

Reservoir	Location	% Full	SWE % of Avg	Full Capacity (kaf)	Total Capacity (kaf)	Outflow (cfs)
Angostura Reservoir	SD	n/a	n/a	123	123	n/a
Alcova Reservoir	WY	n/a	n/a	184	184	n/a
Lake Altus	OK	n/a	n/a	129	149	n/a
Lake Alice Reservoir	NE	n/a	n/a	11	11	n/a
Arbuckle Reservoir	OK	n/a	n/a	72	108	n/a
Buffalo Bill Reservoir	WY	n/a	80	647	647	n/a
Bighorn Lake (Yellowtail)	MT	n/a	0	1011	1279	n/a
Box Butte Reservoir	NE	n/a	n/a	29	29	n/a
Belle Fourche Reservoir	SD	n/a	n/a	173	173	n/a
Bull Lake Reservoir	WY	n/a	60	152	152	n/a
Bonny Lake	CO	0	n/a	41	170	2
Boysen Reservoir	WY	n/a	71	742	893	n/a
Calamus Reservior	NE	n/a	n/a	127	127	n/a
Carter Lake Reservoir	CO	n/a	n/a	112	112	n/a
Cedar Bluff Reservoir	KS	37	n/a	172	364	0
Choke Canyon Reservoir	TX	n/a	n/a	695	695	n/a
Clark Canyon Reservoir	MT	n/a	156	174	253	n/a
Canyon Ferry Lake	MT	n/a	93	1892	1993	n/a
Cheney Reservoir	KS	n/a	n/a	167	248	n/a
Fort Cobb Reservoir	OK	n/a	n/a	74	136	n/a
Davis Creek Reservoir	NE	n/a	n/a	31	31	n/a
Deerfield Reservoir	SD	n/a	n/a	16	16	n/a
E. A. Patterson Lake	ND	n/a	n/a	9	9	n/a
Enders Reservoir	NE	19	n/a	43	73	2
Flatiron Reservoir	CO	n/a	n/a	1	1	n/a
Foss Reservoir	OK	n/a	n/a	169	350	n/a
Fresno Reservoir	MT	n/a	n/a	93	93	n/a
Gibson Reservoir	MT	n/a	28	99	99	n/a
Glendo Reservoir	WY	n/a	31	517	789	n/a
Lake Granby	CO	n/a	n/a	540	540	n/a
Green Mountain Reservoir	CO	n/a	n/a	154	154	n/a
Gray Reef Reservoir	WY	n/a	n/a	2	2	n/a
Guernsey Reservoir	WY	n/a	n/a	46	46	n/a
Hugh Butler Lake (Red Willow Dam)	NE	41	n/a	36	85	2
Harlan County Lake	NE	75	n/a	314	814	0
Hebgen Lake	MT	n/a	50	386	400	n/a
Horsetooth Reservoir	CO	n/a	n/a	157	157	n/a
Harry Strunk Lake (Medicine Creek)	NE	95	n/a	36	88	78
Helena Valley Reservoir	MT	n/a	n/a	10	10	n/a
Jamestown Reservoir	ND	n/a	n/a	32	221	n/a
Keyhole Reservoir	WY	n/a	n/a	189	329	n/a
Kortes Reservoir	WY	n/a	n/a	5	5	n/a
Keith Sebelius Lake (Norton Dam)	KS	44	n/a	35	134	1
Kirwin Reservoir	KS	47	n/a	98	313	n/a
Little Lake Alice Reservoir	NE	n/a	n/a	1	1	n/a
Lake Elwell (Tiber Reservoir)	MT	n/a	44	926	1329	n/a
Lima Reservoir	MT	n/a	n/a	84	100	n/a
Lake Minatare Reservoir	NE	n/a	n/a	59	59	n/a
Lake Tschida	ND	n/a	n/a	67	214	n/a
Lovewell Reservoir	KS	101	n/a	36	86	0
Marys Lake	CO	n/a	n/a	1	1	n/a
McGee Creek	OK	n/a	n/a	114	199	n/a
Merritt Reservoir	NE	n/a	n/a	67	67	n/a
Lake Nasworthy	TX	n/a	n/a	11	12	n/a
Nelson Reservoir	MT	n/a	n/a	79	79	0
Lake Thunderbird (Norman Dam)	OK	n/a	n/a	106	177	n/a
Lake Estes (Olympus Dam)	CO	n/a	n/a	3	3	n/a
Pathfinder Reservoir	WY	n/a	n/a	1070	1070	n/a
Pilot Butte Reservoir	WY	n/a	n/a	34	34	n/a
Pinewood Reservoir	CO	n/a	n/a	2	2	n/a
Pipestem Lake	ND	n/a	n/a	9	142	n/a
Pishkun Reservoir	MT	n/a	n/a	47	47	n/a
Pactola Reservoir	SD	n/a	n/a	56	99	n/a
Pueblo Reservoir	CO	n/a	n/a	323	350	n/a
Ruedi Reservoir	CO	n/a	n/a	102	102	n/a
Lake Meredith (Sanford Dam)	TX	n/a	n/a	896	1358	n/a
Seminoe Reservoir	WY	n/a	84	1017	1017	n/a
Shadow Mountain Reservoir	CO	n/a	n/a	18	18	n/a
Lake Sherburne	MT	n/a	68	66	66	n/a
Shadehill Reservoir	SD	n/a	n/a	120	350	n/a
Swift Reservoir	MT	n/a	n/a	30	36	n/a
Tom Steed Reservoir (Mtn Park Dam)	OK	n/a	n/a	97	117	n/a
Swanson Lake (Trenton Dam)	NE	56	n/a	110	244	1
Twin Buttes Reservoir	TX	n/a	n/a	186	640	n/a
Turquoise Lake (Sugarloaf Dam)	CO	n/a	n/a	129	129	n/a
Twin Lakes Reservoir	CO	n/a	n/a	141	141	n/a
Waconda Lake (Glen Elder Dam)	KS	71	n/a	219	942	12
Webster Reservoir	KS	17	n/a	76	259	0
Winters Creek Reservoir	NE	n/a	n/a	3	3	n/a
Willow Creek Reservoir	MT	n/a	n/a	32	32	n/a
Willow Creek Reservoir	CO	n/a	n/a	11	11	n/a

Last Updated: 5/21/2025