Dams in Colorado

1,958 damsAvg age: 84 years

451

High Hazard

294

Significant

1,213

Low Hazard

Dam Safety in Colorado

Colorado has 1,958 dams tracked in the National Inventory of Dams. Of these, 451 (23%) are classified as high hazard — meaning failure would probably cause loss of human life — and 294 are classified as significant hazard. Currently, 119 dams in the state have a condition assessment of poor or unsatisfactory, indicating recognized safety deficiencies.

The average dam in Colorado is 84 years old. Many of these aging structures were built before modern dam safety standards were established, which increases the importance of regular inspections and maintenance. The most common purpose for dams in Colorado is irrigation, accounting for 914 of the state's dams.

The federal inventory is not every dam in Colorado. It includes dams rated high or significant hazard, plus low-hazard dams above a size threshold (taller than 25 feet holding more than 15 acre-feet, or taller than 6 feet holding more than 50 acre-feet). Small, older dams below that line are usually left out, even though they can still shape the streams around them. The state's own dam safety program often tracks many more, and it is the agency that inspects most of them.

Use the search above to find dams near any address in Colorado, or browse by county below. Each dam listing includes its hazard potential classification, condition assessment, physical characteristics, and inspection history from the NID.

Colorado Dam Facts

Total Dams	1,958
High Hazard Dams	451
Average Dam Age	84 years
Tallest Dam	468 ft
Largest Reservoir	1,833,700 acre-ft
Poor/Unsatisfactory Condition	119

Notable Dams in Colorado

Morrow Point Dam468 ftHigh Ten Mile Pond #3 Dam416 ftHigh Blue Mesa Dam390 ftHigh Gross350 ftHigh Ridgway Dam330 ftHigh

Explore Colorado Dams

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Counties in Colorado

Adams57 dams7 high hazard Arapahoe22 dams8 high hazard Archuleta24 dams4 high hazard Baca9 dams1 high hazard Bent6 dams2 high hazard Boulder103 dams32 high hazard Broomfield11 dams5 high hazard Chaffee12 dams4 high hazard Cheyenne1 dams Clear Creek23 dams12 high hazard Conejos11 dams3 high hazard Costilla8 dams2 high hazard Crowley10 dams1 high hazard Custer3 dams2 high hazard Delta109 dams23 high hazard Denver12 dams8 high hazard Dolores9 dams1 high hazard Douglas47 dams6 high hazard Eagle32 dams11 high hazard El Paso107 dams28 high hazard Elbert72 dams Fremont19 dams5 high hazard Garfield46 dams10 high hazard Gilpin4 dams1 high hazard Grand60 dams8 high hazard Gunnison25 dams8 high hazard Hinsdale22 dams4 high hazard Huerfano45 dams6 high hazard Jackson43 dams1 high hazard Jefferson86 dams29 high hazard Kiowa5 dams Kit Carson3 dams1 high hazard La Plata34 dams11 high hazard Lake7 dams3 high hazard Larimer148 dams57 high hazard Las Animas24 dams7 high hazard Lincoln13 dams1 high hazard Logan10 dams3 high hazard Mesa126 dams27 high hazard Mineral28 dams7 high hazard Moffat28 dams2 high hazard Montezuma25 dams9 high hazard Montrose29 dams9 high hazard Morgan22 dams2 high hazard Otero10 dams Ouray6 dams2 high hazard Park25 dams8 high hazard Phillips3 dams Pitkin20 dams7 high hazard Prowers8 dams Pueblo27 dams8 high hazard Rio Blanco27 dams3 high hazard Rio Grande7 dams3 high hazard Routt64 dams8 high hazard Saguache10 dams1 high hazard San Juan2 dams San Miguel11 dams4 high hazard Sedgwick13 dams3 high hazard Summit16 dams9 high hazard Teller26 dams6 high hazard Washington3 dams1 high hazard Weld129 dams16 high hazard Yuma11 dams1 high hazard

High Hazard Dams in Colorado

Dam	County	Height	Condition	Purpose
Morrow Point Dam	Montrose	468 ft	Not assessed	Hydroelectric
Ten Mile Pond #3 Dam	Summit	416 ft	Not assessed	Tailings
Blue Mesa Dam	Gunnison	390 ft	Not assessed	Flood Risk Reduction
Gross	Boulder	350 ft	Fair	Hydroelectric
Ridgway Dam	Ouray	330 ft	Not assessed	Flood Risk Reduction
Crystal Dam	Montrose	323 ft	Not assessed	Hydroelectric
Ruedi Dam	Pitkin	322 ft	Not assessed	Hydroelectric
Dillon	Summit	310 ft	Satisfactory	Water Supply
Dillon	Summit	310 ft	Satisfactory	Water Supply
Green Mountain Dam	Summit	309 ft	Not assessed	Hydroelectric
Strontia Springs	Douglas	299 ft	Satisfactory	Water Supply
Granby Dam	Grand	298 ft	Not assessed	Hydroelectric
Mcphee Dam	Montezuma	295 ft	Not assessed	Fish and Wildlife Pond
Lemon Dam	La Plata	284 ft	Not assessed	Fish and Wildlife Pond
Ridges Basin Dam	La Plata	273 ft	Not assessed	Water Supply
Homestake Project	Eagle	265 ft	Satisfactory	Water Supply
Rampart	El Paso	250 ft	Satisfactory	Hydroelectric
Pueblo Dam	Pueblo	245 ft	Not assessed	Flood Risk Reduction
Mayflower Pond # 5	Summit	237 ft	Not assessed	Tailings
Robinson Tailing Pond #1dam	Summit	235 ft	Not assessed	Other
Cheesman	Jefferson	221 ft	Satisfactory	Water Supply
Button Rock	Boulder	214 ft	Satisfactory	Water Supply
North Catamount	Teller	210 ft	Satisfactory	Water Supply
Cabin Creek Upper	Clear Creek	210 ft	Satisfactory	Hydroelectric
Williams Fork Main	Grand	209 ft	Satisfactory	Water Supply
Taylor Park Dam	Gunnison	206 ft	Not assessed	Irrigation
Ralston	Jefferson	204 ft	Satisfactory	Water Supply
Trinidad Dam	Las Animas	203 ft	Not assessed	Flood Risk Reduction
Paonia Dam	Gunnison	199 ft	Not assessed	Flood Risk Reduction
Rueter Hess	Douglas	196 ft	Satisfactory	Water Supply
Eagle Park Reservoir	Eagle	192 ft	Satisfactory	Water Supply
Cherry Creek Dam	Arapahoe	189 ft	Not assessed	Flood Risk Reduction
Barker Meadow	Boulder	184 ft	Satisfactory	Hydroelectric
Terrace	Conejos	183 ft	Fair	Irrigation
Jackson Gulch Dam	Montezuma	180 ft	Not assessed	Irrigation
Clinton Gulch	Summit	175 ft	Satisfactory	Water Supply
Silver Jack Dam	Gunnison	173 ft	Not assessed	Irrigation
Senac	Arapahoe	163 ft	Satisfactory	Water Supply
Vega Dam	Mesa	162 ft	Not assessed	Irrigation
Crawford Dam	Delta	162 ft	Not assessed	Irrigation
Sugar Loaf Dam	Lake	162 ft	Not assessed	Irrigation
Vallecito Dam	La Plata	162 ft	Not assessed	Fish and Wildlife Pond
Horsetooth Dam	Larimer	158 ft	Not assessed	Irrigation
Bonny Dam	Yuma	158 ft	Not assessed	Flood Risk Reduction
Rifle Gap Dam	Garfield	157 ft	Not assessed	Irrigation
Mountain Home	Costilla	153 ft	Satisfactory	Irrigation
Loveland Water Storage	Larimer	152 ft	Satisfactory	Water Supply
Eleven Mile Canyon	Park	151 ft	Satisfactory	Water Supply
Stagecoach	Routt	150 ft	Satisfactory	Water Supply
Jerry Creek #2	Mesa	150 ft	Satisfactory	Water Supply
Joe Wright	Larimer	148 ft	Satisfactory	Water Supply
Chatfield Dam	Douglas	148 ft	Not assessed	Flood Risk Reduction
Groundhog	Dolores	141 ft	Fair	Irrigation
Sanchez	Costilla	137 ft	Unsatisfactory	Irrigation
Fortune	Jefferson	134 ft	Satisfactory	Water Supply
Crystal Creek	El Paso	133 ft	Fair	Water Supply
Middle Fork	Garfield	130 ft	Satisfactory	Flood Risk Reduction
Rattlesnake Dam	Larimer	130 ft	Not assessed	Irrigation
Meadow Creek	Grand	126 ft	Satisfactory	Water Supply
Ritschard	Grand	126 ft	Fair	Irrigation
Blunn	Jefferson	125 ft	Satisfactory	Water Supply
Mc Lellan	Arapahoe	125 ft	Fair	Water Supply
Manitou	El Paso	124 ft	Fair	Water Supply
Standley Lake	Jefferson	123 ft	Satisfactory	Irrigation
Continental	Hinsdale	120 ft	Satisfactory	Irrigation
Milton Seaman	Larimer	120 ft	Satisfactory	Water Supply
Elkhead Creek	Moffat	118 ft	Satisfactory	Fish and Wildlife Pond
John Martin Dam - Fort Lyon Protective Works	Bent	118 ft	Not assessed	Flood Risk Reduction
Rio Grande	Hinsdale	117 ft	Satisfactory	Irrigation
Beaver Park	Rio Grande	114 ft	Satisfactory	Recreation
Narraguinnep - Main Dam	Montezuma	114 ft	Unsatisfactory	Irrigation
Fall River	Clear Creek	114 ft	Fair	Irrigation
Rawhide	Larimer	113 ft	Satisfactory	Water Supply
Beaver	Gunnison	113 ft	Fair	Irrigation
Palisade Cabin	Mesa	113 ft	Fair	Water Supply
Montgomery	Park	112 ft	Satisfactory	Water Supply
Yamcolo	Garfield	110 ft	Fair	Irrigation
Juniata	Mesa	110 ft	Satisfactory	Water Supply
Onion Valley	Montrose	110 ft	Fair	Irrigation
Lester Creek	Routt	110 ft	Fair	Recreation
Long Hollow	La Plata	110 ft	Satisfactory	Irrigation
Robinson	Eagle	110 ft	Satisfactory	Tailings
Park Creek	Larimer	108 ft	Satisfactory	Irrigation
Two Buttes	Baca	106 ft	Satisfactory	Recreation
Genesee No. 2	Jefferson	103 ft	Satisfactory	Water Supply
Gold Camp	El Paso	103 ft	Satisfactory	Water Supply
Santa Maria	Mineral	102 ft	Satisfactory	Irrigation
Big Beaver	Rio Blanco	102 ft	Fair	Fish and Wildlife Pond
Mountain View	Archuleta	102 ft	Satisfactory	Water Supply
Big Tooth	El Paso	102 ft	Satisfactory	Water Supply
Marshall Lake	Boulder	101 ft	Satisfactory	Irrigation
Spinney Mountain	Park	100 ft	Satisfactory	Water Supply
Williams Creek	Hinsdale	100 ft	Satisfactory	Recreation
South Catamount	Teller	100 ft	Fair	Water Supply
Willow Creek	Routt	100 ft	Fair	Recreation
Chase Gulch	Gilpin	100 ft	Satisfactory	Water Supply
Twin Lakes Dam	Lake	100 ft	Not assessed	Hydroelectric
Lake Isabel	Pueblo	98 ft	Not assessed	Recreation
Upper Highline	Mesa	98 ft	Satisfactory	Recreation
Upper Beaver Brook	Clear Creek	97 ft	Satisfactory	Water Supply