Irrigation Dams in Montana

Montana has 755 irrigation dams, of which 99 carry a high hazard classification. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area.

#	Dam	County	Height (ft)	Hazard	Condition	Year
1	Swift (pondera)	Pondera	205	High	Satisfactory	1967
2	Gibson Dam	Teton	199	High	Not assessed	1929
3	West Fork Bitterroot (painted Rocks)	Ravalli	143	High	Poor	1940
4	Willow Creek	Big Horn	136	High	Fair	1941
5	Sun River Diversion Dam	Teton	132	High	Not assessed	1915
6	Newlan Creek Dam	Meagher	131	High	Poor	1977
7	Hubbart	Flathead	130	High	Poor	1923
8	Fresno Dam	Hill	111	High	Not assessed	1939
9	Ruby Dam	Madison	111	High	Satisfactory	1938
10	Lake Sherburne Dam	Glacier	109	High	Not assessed	1919
11	Beaver Creek Reservoir Dam	Hill	108	High	Fair	1974
12	Bair	Meagher	106	High	Satisfactory	1939
13	Willow Creek Dam	Madison	105	High	Poor	1938
14	Nevada Creek Dam	Powell	105	High	Satisfactory	1938
15	Cooney	Carbon	102	High	Poor	1937
16	Crow	Lake	99	High	Poor	1933
17	Mission	Lake	98	High	Fair	1935
18	Lower Willow Creek Dam	Granite	96	High	Poor	1962
19	Tongue River Dam	Big Horn	93	High	Satisfactory	1939
20	North Fork of Smith River Dam	Meagher	91	High	Satisfactory	1936
21	Martinsdale, North Dam	Wheatland	91	High	Satisfactory	1939
22	Norwegian Creek Dam	Madison	85	Significant	Not assessed	1958
23	Helen B	Carter	81	Low	Not assessed	1966
24	Big Casino Creek Dam	Fergus	80	High	Satisfactory	1976
25	Cataract Creek Dam	Madison	80	High	Unsatisfactory	1959
26	Petrolia	Petroleum	76	High	Poor	1951
27	Como Dam	Ravalli	76	High	Not assessed	1910
28	Browns Dam	Hill	73	High	Not assessed	2007
29	Lower Two Medicine	Glacier	70	High	Satisfactory	1967
30	Three Mile Reservoir (l.&c.)	Lewis and Clark	70	High	Poor	1926
31	Lars	Chouteau	66	Low	Not assessed	1950
32	Frenchman Dam	Phillips	63	Significant	Not assessed	1953
33	Delmoe Lake Dam	Jefferson	60	High	Poor	1914
34	Bynum Reservoir Dam	Teton	60	High	Satisfactory	1926
35	Deadmans Basin Dam	Wheatland	60	High	Satisfactory	1941
36	Lake Frances East Dam	Pondera	59	High	Satisfactory	1909
37	Crazy Sombreo	Meagher	58	Significant	Not assessed	1950
38	Glacier Lake North Dam	Carbon	57	High	Satisfactory	1937
39	Lima	Beaverhead	56	High	Satisfactory	1934
40	Ackley Lake Dam	Judith Basin	55	High	Satisfactory	1938
41	Nilan North Dam	Lewis and Clark	54	High	Satisfactory	1951
42	Swift Dike (pondera)	Pondera	53	High	Satisfactory	1967
43	Big John M	Fergus	52	Low	Not assessed	1972
44	Powell	Powell	52	High	Poor	1981
45	Nilan East Dam	Lewis and Clark	51	High	Satisfactory	1951
46	Jocko	Missoula	51	High	Poor	1937
47	Four Horns	Glacier	50	High	Satisfactory	1915
48	Stoyanoff	Meagher	50	Low	Not assessed	1947
49	Doggett Reservoir	Meagher	50	High	Fair	1948
50	South Sandstone Creek Dam	Fallon	49	Significant	Not assessed	1975
51	Martinsdale, East Dam	Wheatland	49	High	Poor	1939
52	Booth (chouteau)	Chouteau	48	Low	Not assessed	1961
53	Mcdonald	Lake	47	High	Satisfactory	1920
54	Gardner #1 (east Dam)	Carter	46	Low	Not assessed	1962
55	Ix Ranch	Chouteau	46	Low	Not assessed	1951
56	Dry Fork	Blaine	45	Significant	Not assessed	1986
57	Ernie Hudson	Stillwater	45	Low	Not assessed	1928
58	I.u. Reservoir	Blaine	44	Low	Not assessed	1938
59	Prairie Nest Ranch 3	Cascade	44	Low	Not assessed	1959
60	Bonanza	Meagher	44	Significant	Not assessed	1938
61	Peet Creek Dam	Beaverhead	43	Significant	Not assessed
62	Taylor, Upper	Powell	43	High	Satisfactory	1951
63	Gordon Cattle Company #2	Blaine	42	Low	Not assessed	1978
64	Anita Dam	Blaine	42	High	Fair	1995
65	Spaniard	Cascade	42	Low	Not assessed	1962
66	Burnt Fork Dam	Ravalli	42	High	Not assessed	1902
67	Vananda	Rosebud	42	Low	Not assessed	1936
68	Anita Dam	Yellowstone	42	Low	Not assessed	1937
69	Ninepipe	Lake	41	High	Fair	1911
70	Golden Glenn #1	Carbon	40	Low	Not assessed	1947
71	Olson, Oscar (meagher)	Meagher	40	High	Satisfactory	1959
72	Upper Dry Fork	Sanders	40	High	Unsatisfactory	1940
73	Gerald Kane	Blaine	39	Significant	Not assessed	1965
74	Cottonwood Dam (park)	Park	39	High	Poor	1953
75	Marstaeller Irrigation Dam	Sweet Grass	39	Low	Not assessed	1984
76	Gollaher Reservoir	Cascade	38	Significant	Not assessed	1945
77	Armells Reservoir	Fergus	38	Low	Not assessed	1951
78	Holliday -flagstaff Lake-	Meagher	38	Low	Not assessed	1939
79	Jordan Dam	Park	38	High	Poor	1961
80	Davis Creek Dam	Powell	38	Significant	Not assessed	1960
81	Moving'along	Teton	38	Low	Not assessed	1948
82	Wolf Coulee Dam	Teton	38	Significant	Not assessed	2004
83	Mccarter North Dam	Toole	38	Significant	Not assessed	1953
84	Reagan Lake	Glacier	37	Low	Not assessed	1967
85	Yellow Water Main Dam	Petroleum	37	High	Fair	1938
86	Morris #1 (toole)	Toole	37	Low	Not assessed	1948
87	Elder Elmer	Cascade	36	Low	Not assessed	1953
88	Jappe	Chouteau	36	Low	Not assessed	1956
89	7-b Reservoir	Garfield	36	Low	Not assessed	1945
90	Tomsheck	Toole	36	Low	Not assessed	1954
91	Benson	Beaverhead	35	Low	Not assessed	1952
92	Barrett, J. Dam	Beaverhead	35	Low	Not assessed	1962
93	Nuhn #3	Carter	35	Low	Not assessed	1965
94	Neuman Dam	Cascade	35	Low	Not assessed	1956
95	George Welch	Hill	35	Low	Not assessed	1950
96	Eggebrecht Dam	Lake	35	Low	Not assessed	1977
97	Maughan Dam	Lake	35	Low	Not assessed	1960
98	Rough Creek Dam	Rosebud	35	Low	Not assessed	1960
99	Neiser #1	Sheridan	35	Low	Not assessed	1936
100	Deep Can	Teton	35	Low	Not assessed	1935

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