Dams in Johnson County, Wyoming

178Total Dams

14High Hazard

8Significant

Dam Safety in Johnson County, Wyoming

Johnson County has 178 dams tracked in the National Inventory of Dams. Of these, 14 are classified as high hazard — meaning failure would probably cause loss of human life. Another 8 carry a significant hazard classification. Currently, 56 dams have a condition assessment of poor or unsatisfactory.

The average dam in Johnson County is 51 years old. The most common purpose is irrigation. The tallest dam is Lake Desmet (north Dam) at 120 ft.

Explore more: Oldest dams in Wyoming · Tallest dams · High risk dams · Largest reservoirs

Dam	Hazard	Condition	Height (ft)	Purpose	Year
Lake Desmet (north Dam)	High	Fair	120	Water Supply	1975
Lake Desmet (south Dam)	High	Fair	120	Water Supply	1975
Lake Desmet (a,b,c & Spillway Dikes)	High	Fair	120	Water Supply	1975
Tie Hack	High	Fair	110	Water Supply	1997
Dull Knife	High	Fair	80	Irrigation	1966
Healy	High		76	Irrigation	1975
Kearney Lake	High	Fair	67	Irrigation	1963
Willow Park	High		60	Irrigation	1959
Muddy Guard No. 2 South Dam	High	Fair	57	Irrigation	1976
Big Horn Dike C	High	Fair	50	Irrigation	1964
Big Horn Dike B	High	Fair	50	Irrigation	1964
Big Horn Dike A	High	Fair	45	Irrigation	1964
Dump Draw	High	Satisfactory	42	Flood Risk Reduction	2019
Cloud Peak	High	Fair	36	Irrigation	1958
Muddy Guard No. 2 North Dam	Significant	Fair	102	Irrigation	1976
Pole Creek Irrigation	Significant	Poor	47	Irrigation	1972
Martin	Significant	Fair	43	Irrigation	1910
Kingsbury Todd No. 1	Significant	Poor	37	Irrigation	1913
Kingsbury Todd No. 2	Significant	Fair	32	Irrigation	1917
Kelly	Significant	Poor	26	Irrigation	1973
Taylor No. 2	Significant	Fair	22	Irrigation	1987
Reynolds Piney Creek Diversion Dam	Significant		22	Irrigation	1969
22 - 36	Low	Fair	95	Irrigation	2003
Parkman Disposal	Low	Fair	60	Debris Control	1985
Stevens No. 2	Low	Fair	55	Irrigation	1972
Christensen No. 1	Low	Fair	55	Irrigation	1987
Ridge Place No. 2	Low	Fair	53	Irrigation	1973
Posy No. 1	Low	Fair	52	Irrigation	1995
Miller	Low	Poor	50	Fire Protection, Stock, Or Small Fish Pond	1955
Muddy Guard No. 1	Low	Poor	50	Irrigation	1976
Western Gas Resources No. 8	Low	Fair	50	Irrigation	2004
Kaufmann	Low	Poor	49	Irrigation	1954
Neil	Low	Fair	49	Irrigation	2008
South Ricketts Flat	Low	Fair	48	Irrigation	1972
Twin No. 1	Low	Poor	47	Fire Protection, Stock, Or Small Fish Pond	1957
Enl. George H. Marshall	Low	Fair	46	Irrigation	2007
Horn	Low	Fair	45	Irrigation	1956
Sand Draw	Low	Poor	45	Irrigation	1968
Steffensen	Low	Poor	44	Irrigation	1950
Patch	Low	Poor	44	Irrigation	1958
Fish Stockwater	Low	Fair	44	Fire Protection, Stock, Or Small Fish Pond	1971
Feldspar	Low	Fair	43	Irrigation	2009
Zezas Irrigation	Low	Poor	43	Irrigation	1973
Tabasco	Low	Fair	43	Irrigation	2006
Router No. 49	Low	Fair	42	Fire Protection, Stock, Or Small Fish Pond	2006
Dead Rabbit	Low	Fair	42	Irrigation	2006
Steffenson No. 2	Low	Poor	41	Irrigation	1971
Muffie	Low	Fair	40	Irrigation	1970
Snowflake	Low	Fair	40	Irrigation	2006
Sandstone	Low	Fair	39	Fire Protection, Stock, Or Small Fish Pond	1956
Michelena #3	Low	Fair	39	Irrigation	2006
Enl. Fresno	Low	Fair	39	Irrigation	2007
Mole Man	Low	Fair	39	Fire Protection, Stock, Or Small Fish Pond	2008
Anita	Low	Fair	38	Irrigation	1965
Mary Stock	Low	Poor	38	Fire Protection, Stock, Or Small Fish Pond	1970
Rough Ride	Low	Fair	38	Irrigation	2007
Yates Coal Gulch 24-16	Low	Fair	38	Fire Protection, Stock, Or Small Fish Pond	2008
Horn Creek	Low	Fair	37	Irrigation	1956
Lyle	Low	Poor	37	Irrigation	1953
Pat	Low	Poor	36	Fire Protection, Stock, Or Small Fish Pond	1958
Basch	Low	Poor	36	Irrigation	1960
Lula	Low	Fair	36	Fire Protection, Stock, Or Small Fish Pond	1963
Monkey Cowboy	Low	Fair	36	Other	2007
Pass	Low	Poor	36	Irrigation	1959
Tass	Low	Poor	36	Irrigation	1965
Dry Poison Irrigation	Low	Poor	36	Irrigation	1970
Cross Creek	Low	Fair	36	Irrigation	1977
Walters	Low	Fair	35	Fire Protection, Stock, Or Small Fish Pond	1952
Madonna	Low	Poor	35	Fire Protection, Stock, Or Small Fish Pond	1973
Enl. Dixon	Low	Fair	35	Fish and Wildlife Pond	1956
Router No. 11	Low	Poor	35	Irrigation	2007
Coulter 14-3	Low	Fair	35	Fire Protection, Stock, Or Small Fish Pond	2004
Case	Low	Poor	35	Irrigation	1991
Pk 9-17	Low	Fair	35	Irrigation	2007
Enl. Johnson 34-4-4377	Low	Fair	35	Irrigation	2006
Ramsbottom	Low	Poor	34	Fire Protection, Stock, Or Small Fish Pond	1970
Boulder Lane	Low	Fair	34	Irrigation	2007
Brock	Low	Poor	34	Irrigation	1964
Gammon	Low	Poor	34	Irrigation	1974
Enl. Rocky Road	Low	Fair	34	Irrigation	2007
Highway	Low	Fair	34	Irrigation	1973
Dwight	Low	Fair	34	Irrigation	1953
Glen Means	Low	Fair	34	Irrigation	1992
Will	Low	Fair	33	Fish and Wildlife Pond	2008
Bob	Low	Poor	33	Fire Protection, Stock, Or Small Fish Pond	1959
Karl	Low	Poor	33	Fire Protection, Stock, Or Small Fish Pond	1958
Total Station	Low	Poor	33	Fish and Wildlife Pond	2007
Anaheim	Low	Fair	33	Irrigation	2005
North Poker Creek	Low	Fair	33	Irrigation	1963
Margaret	Low	Fair	33	Fire Protection, Stock, Or Small Fish Pond	1966
Ring	Low	Fair	33	Fire Protection, Stock, Or Small Fish Pond	2008
Big Boy	Low	Poor	33	Fire Protection, Stock, Or Small Fish Pond	1969
Streeter	Low	Fair	32	Irrigation	1951
Murk Stock	Low	Fair	32	Fire Protection, Stock, Or Small Fish Pond	1962
West	Low	Fair	31	Fire Protection, Stock, Or Small Fish Pond	1962
Lion	Low	Poor	31	Fire Protection, Stock, Or Small Fish Pond	1964
Cheri L.	Low	Fair	31	Fire Protection, Stock, Or Small Fish Pond	1973
Marton	Low	Poor	31	Fire Protection, Stock, Or Small Fish Pond	1963
Bass Pond	Low	Fair	31	Irrigation	1910
Huson	Low	Poor	30	Irrigation	1968
Irene	Low	Fair	30	Fire Protection, Stock, Or Small Fish Pond	1963
Henry	Low	Poor	30	Fire Protection, Stock, Or Small Fish Pond	1960
Will No. 1	Low	Fair	30	Fire Protection, Stock, Or Small Fish Pond	1991
Mowry	Low	Poor	30	Irrigation	1963
Puff	Low	Poor	30	Flood Risk Reduction	1976
Karl	Low	Fair	30	Fire Protection, Stock, Or Small Fish Pond	1957
Arch	Low	Fair	30	Irrigation	1949
Rattlesnake No. 1	Low	Fair	30	Fire Protection, Stock, Or Small Fish Pond	1969
Willow Glenn	Low	Fair	30	Irrigation	1959
Margaret No.2	Low	Fair	30	Irrigation	2004
Purdy	Low	Fair	30	Irrigation	1966
Iberlin	Low	Poor	30	Fire Protection, Stock, Or Small Fish Pond	1951
Poison Creek No. 1	Low	Poor	30	Irrigation	1999
Government No. 1 Stock	Low	Poor	30	Fire Protection, Stock, Or Small Fish Pond	1962
Harriet 4777-7 Mixed Use #1	Low	Fair	30	Other
Ben	Low	Poor	29	Fire Protection, Stock, Or Small Fish Pond	1960
Raper Draw	Low	Fair	29	Fire Protection, Stock, Or Small Fish Pond	1959
Kimberly	Low	Fair	29	Fire Protection, Stock, Or Small Fish Pond	1973
Johnson 41-23-4377	Low	Fair	29	Other	2005
Trabing	Low	Poor	28	Irrigation	1971
Robertson	Low	Fair	28	Fire Protection, Stock, Or Small Fish Pond	1970
Smith No. 1	Low	Poor	28	Fire Protection, Stock, Or Small Fish Pond	1957
Henry No. 1 Stock	Low	Poor	28	Fire Protection, Stock, Or Small Fish Pond	1967
Bowman No.1	Low	Fair	28	Irrigation	2004
Bass	Low	Fair	28	Fire Protection, Stock, Or Small Fish Pond	1969
Case 4777-27 Mixed Use #1	Low	Fair	28	Other	2024
Donaldson	Low	Fair	27	Fire Protection, Stock, Or Small Fish Pond	1970
Taylor No. 1	Low	Fair	27	Fire Protection, Stock, Or Small Fish Pond	1958
Phil No. 2	Low	Fair	27	Fire Protection, Stock, Or Small Fish Pond	1967
Joe	Low	Fair	27	Fire Protection, Stock, Or Small Fish Pond	1957
Sg Palo	Low	Fair	27	Irrigation	2004
Camino	Low	Poor	27	Irrigation	1958
Mallard #1	Low	Fair	26	Fire Protection, Stock, Or Small Fish Pond	1999
South Fork	Low	Poor	26	Irrigation	1973
Harriet 4777-7 Mixed Use #2	Low	Fair	26	Other	2024
Reculusa	Low	Fair	25	Fire Protection, Stock, Or Small Fish Pond	1957
Doyen	Low	Poor	25	Fire Protection, Stock, Or Small Fish Pond	1956
Murphy	Low	Poor	25	Fire Protection, Stock, Or Small Fish Pond	1970
Falxa No. 1	Low	Poor	25	Fire Protection, Stock, Or Small Fish Pond	1958
Amerada Stock	Low	Fair	25	Fire Protection, Stock, Or Small Fish Pond	1969
Simmons	Low	Fair	25	Fire Protection, Stock, Or Small Fish Pond	1962
John Stock	Low	Fair	25	Fire Protection, Stock, Or Small Fish Pond	1970
Ethyl No. 2	Low	Fair	25	Irrigation	1969
Dry Creek	Low	Poor	25	Irrigation	1958
Smith No. 2	Low	Fair	25	Irrigation	1959
Restoration Pond B	Low	Fair	25	Other	1980
Goble No. 2	Low	Poor	25	Fire Protection, Stock, Or Small Fish Pond	1972
Zezas	Low	Poor	25	Fire Protection, Stock, Or Small Fish Pond	1958
Fisher	Low	Poor	24	Fire Protection, Stock, Or Small Fish Pond	1968
Simmons	Low	Poor	24	Irrigation	1940
Leslie No. 2	Low	Fair	24	Fire Protection, Stock, Or Small Fish Pond	1991
Harriett 4777-7 Freshwater #3	Low	Fair	24	Other	2023
Enl. Johnson 42-27-4377	Low	Fair	24	Fire Protection, Stock, Or Small Fish Pond
Rule Wetland North	Low	Fair	23	Fish and Wildlife Pond	2001
Tornado Fed 4778-5 Mixed Use 1	Low	Fair	23	Other	2023
Bruce	Low	Fair	22	Fire Protection, Stock, Or Small Fish Pond	1956
Big Donaldson	Low	Fair	22	Fire Protection, Stock, Or Small Fish Pond	1973
Austin No. 1	Low	Poor	22	Fire Protection, Stock, Or Small Fish Pond	1991
Mary No. 2	Low	Fair	22	Fire Protection, Stock, Or Small Fish Pond	1973
Hepp	Low	Poor	22	Irrigation	1964
Willits	Low	Fair	22	Irrigation	1940
Jepson No. 2	Low	Fair	22	Irrigation	1953
Haines Stock	Low	Fair	21	Fire Protection, Stock, Or Small Fish Pond	1963
Fowler	Low	Fair	21	Fire Protection, Stock, Or Small Fish Pond	1956
Harriett Freshwater #5	Low	Fair	21	Other	2023
Harriett Freshwater #4	Low	Fair	21	Other	2023
North Jack Rabbit	Low	Fair	21	Fire Protection, Stock, Or Small Fish Pond	1969
Crain	Low	Fair	20	Irrigation	1958
Roger's Folly No. 2	Low	Fair	20	Fish and Wildlife Pond	1964
Reno	Low	Fair	19	Irrigation	1952
Hague Paxton	Low	Fair	19	Fire Protection, Stock, Or Small Fish Pond	1964
Harriett 4777-7 Freshwater #2	Low	Fair	19	Other	2023
Four Mile	Low	Fair	18	Irrigation	1944
Harriett 4777-7 Fresh Water #1	Low	Fair	17	Other	2023
Reynolds Clear Creek Diversion	Low		17	Fire Protection, Stock, Or Small Fish Pond	1977
Pine Dale	Low	Poor	15	Fire Protection, Stock, Or Small Fish Pond	1940
Cross & Cruse Creek Ditch Co.	Low	Poor	15	Irrigation	1895
Buffalo Wildlife Pond	Low	Fair	11	Fish and Wildlife Pond	1994

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