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List of largest reservoirs in Colorado facts for kids

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This is a list of the largest reservoirs in the state of Colorado. All thirty-eight reservoirs that contain greater than 40,000 acre feet (49 million cubic meters) are included in the list. Most of the larger reservoirs in the state are owned by the United States Bureau of Reclamation and, to a lesser extent, the Corps of Engineers. Additionally, a number of these reservoirs are owned by private companies for flood control and irrigation purposes. The largest reservoir entirely contained in Colorado is Blue Mesa Reservoir, with a capacity of 829,500 acre⋅ft (1.0 billion m3). The total storage of the reservoirs on this list is 3,763,458 acre⋅ft (4.6 billion m3), although not all is allocated for use by Colorado.

Key
dagger denotes reservoir not entirely in Colorado
double-dagger denotes that reservoir is offstream and fed by canals

List

Rank Name County(s) Coordinates Volume (acre-feet) Volume (km3) Elevation Inflow Dam(s) Image
1 Navajo Reservoir Archuleta, Rio Arribadagger, San Juandagger 36°49′12″N 107°36′12″W / 36.82000°N 107.60333°W / 36.82000; -107.60333 1,708,600 2.1075 6,089 San Juan Navajo Dam Dh110911-192255.jpg
2 Blue Mesa Reservoir Gunnison 38°28′31″N 107°17′16″W / 38.47528°N 107.28778°W / 38.47528; -107.28778 829,500 1.2032 7,519 Gunnison River Blue Mesa Dam Blue Mesa Reservoir.jpg
3 John Martin Reservoir Bent 38°03′59″N 102°57′16″W / 38.06639°N 102.95444°W / 38.06639; -102.95444 603,500 0.7444 3,870 Arkansas River John Martin Dam John Martin Reservoir - March 2014.JPG
4 Lake Granby Grand 40°08′32″N 105°50′54″W / 40.14222°N 105.84833°W / 40.14222; -105.84833 539,758 0.6658 8,280 Colorado River Granby Dam LakeGranby.JPG
5 McPhee Reservoir Montezuma 37°34′26″N 108°33′29″W / 37.57389°N 108.55806°W / 37.57389; -108.55806 381,100 0.4701 6,929 Dolores River McPhee Dam Mcphee Reservoir ahjdf.jpg
6 Pueblo Reservoir Pueblo 38°15′59″N 104°44′17″W / 38.26639°N 104.73806°W / 38.26639; -104.73806 349,940 0.4317 4,899 Arkansas River Pueblo Dam Pueblo Reservoir.jpg
7 Dillon Reservoir Summit 39°37′04″N 106°03′20″W / 39.61778°N 106.05556°W / 39.61778; -106.05556 257,304 0.3174 9,022 Blue River Dillon Dam Dillon Reservoir (4843910255).jpg
8 Bonny Reservoir (Drained, 2011) Yuma 39°37′16″N 102°10′53″W / 39.62111°N 102.18139°W / 39.62111; -102.18139 165,238 0.2038 3,710 South Fork Republican River Bonny Dam Bonny Reservoir - Spring 2014.JPG
9 Horsetooth Reservoir Larimer 40°31′45″N 105°08′51″W / 40.52917°N 105.14750°W / 40.52917; -105.14750 156,735 0.1933 5,430 Colorado River via Colorado-Big Thompson Projectdouble-dagger Dixon Canyon, Spring Canyon, Soldier Canyon, Horsetooth HorsetoothReservoir.jpg
10 Green Mountain Reservoir Summit 39°52′44″N 106°18′20″W / 39.87889°N 106.30556°W / 39.87889; -106.30556 153,639 0.1895 7,950 Blue River Green Mountain Dam Green Mountain Reservoir.JPG
11 Twin Lakes Reservoir Lake 39°04′51″N 106°19′15″W / 39.08083°N 106.32083°W / 39.08083; -106.32083 141,000 0.1739 9,200 Lake Creek Twin Lakes Dam Twin Lakes, Colorado.jpg
12 Sanchez Reservoir Costilla 37°06′32″N 105°24′50″W / 37.10889°N 105.41389°W / 37.10889; -105.41389 137,850 0.1271 8,261 Ventero Creek Sanchez Dam Sanchez Reservoir.JPG
13 Turquoise Lake Lake 39°15′39″N 106°21′59″W / 39.26083°N 106.36639°W / 39.26083; -106.36639 129,398 0.1956 9,869 Boustead Tunneldouble-dagger Sugar Loaf Dam Mt. Elbert.jpg
14 Vallecito Reservoir La Plata 37°22′59″N 107°33′47″W / 37.38306°N 107.56306°W / 37.38306; -107.56306 125,400 0.1547 7,671 Los Pinos River Vallecito Dam Vallecito Res.png
15 Morrow Point Reservoir Gunnison, Montrose 38°26′46″N 107°31′19″W / 38.44611°N 107.52194°W / 38.44611; -107.52194 117,025 0.1443 7,160 Gunnison River Morrow Point Dam HERMIT'S REST OVERLOOK, CURECANTI NATIONAL RECREATION AREA.jpg
16 Carter Lake Reservoir Larimer 40°19′56″N 105°13′07″W / 40.33222°N 105.21861°W / 40.33222; -105.21861 112,230 0.1384 5,759 Colorado River via Colorado-Big Thompson Projectdouble-dagger Carter Lake Dam 3-carter-Lake-Larimer-County.JPG
17 Taylor Park Reservoir Gunnison 38°49′36″N 106°35′38″W / 38.82667°N 106.59389°W / 38.82667; -106.59389 106,210 0.1310 9,337 Taylor River Taylor Park Dam Taylor Park Dam and Reservoir.jpg
18 Ruedi Reservoir Pitkin, Eagle 39°21′53″N 106°48′54″W / 39.36472°N 106.81500°W / 39.36472; -106.81500 102,373 0.1263 7,766 Fryingpan River Ruedi Dam Ruedi Reservoir and Aspen Yacht Club marina.jpg
19 Nee Gronda Reservoir Kiowa 38°18′13″N 102°45′24″W / 38.30361°N 102.75667°W / 38.30361; -102.75667 98,660 0.1217 3,878 Arkansas River via inlet canaldouble-dagger natural depression
20 Elevenmile Canyon Reservoir Park 38°54′50″N 105°29′50″W / 38.91389°N 105.49722°W / 38.91389; -105.49722 97,780 0.1209 8,566 South Platte River Elevenmile Canyon Dam
21 Williams Fork Reservoir Grand 40°01′33″N 106°12′50″W / 40.02583°N 106.21389°W / 40.02583; -106.21389 96,822 0.1194 7,808 Williams Fork Williams Fork Dam Williams Fork Reservoir.JPG
22 Cherry Creek Reservoir Arapahoe 39°38′35″N 104°51′27″W / 39.64306°N 104.85750°W / 39.64306; -104.85750 95,960 0.1184 5,551 Cherry Creek Cherry Creek Dam USACE Cherry Creek dam and reservoir.jpg
23 Nee Noshe Reservoir Kiowa 38°20′26″N 102°41′39″W / 38.34056°N 102.69417°W / 38.34056; -102.69417 94,850 0.1170 3,924 Arkansas River via inlet canaldouble-dagger Nee Noshe Dam
24 Ridgway Reservoir Ouray 38°13′48″N 107°45′13″W / 38.23000°N 107.75361°W / 38.23000; -107.75361 84,230 0.1024 6,699 Uncompahgre River Ridgway Dam RidgwayReservoir.jpg
25 Cheesman Lake Douglas, Jefferson 39°12′31″N 105°16′36″W / 39.20861°N 105.27667°W / 39.20861; -105.27667 79,060 0.0975 6,847 South Platte River Cheesman Dam Cheesman Dam and Lake CO-A-0046.jpg
26 North Sterling Reservoir Logan 40°46′36″N 103°16′50″W / 40.77667°N 103.28056°W / 40.77667; -103.28056 74,590 0.0920 4,071 South Platte River via inlet canaldouble-dagger North Sterling Dam
27 Adobe Creek Reservoir Bent, Kiowa 38°16′20″N 103°14′46″W / 38.27222°N 103.24611°W / 38.27222; -103.24611 70,000 0.0863 4,131 Adobe Creek via inlet canaldouble-dagger
28 Wolford Mountain Reservoir Grand 40°07′45″N 106°24′41″W / 40.12917°N 106.41139°W / 40.12917; -106.41139 65,985 0.0814 7,405 Muddy Creek (Colorado) Wolford Mountain Dam
29 Riverside Reservoir Weld 40°20′15″N 104°15′33″W / 40.33750°N 104.25917°W / 40.33750; -104.25917 65,008 0.0802 4,511 South Platte River via inlet canal
30 Platoro Reservoir Conejos 37°20′32″N 106°33′23″W / 37.34222°N 106.55639°W / 37.34222; -106.55639 59,570 0.0735 9,977 Conejos River Platoro Dam Platoro Dam and Reservoir.jpg
31 Spinney Mountain Reservoir Park 38°58′33″N 105°37′55″W / 38.97583°N 105.63194°W / 38.97583; -105.63194 53,873 0.0665 8,691 South Platte River
32 Rio Grande Reservoir Hinsdale 37°43′10″N 107°16′50″W / 37.71944°N 107.28056°W / 37.71944; -107.28056 51,110 0.0630 9,400 Rio Grande Rio Grande Dam
33 Boyd Lake Larimer 40°25′39″N 105°01′55″W / 40.42750°N 105.03194°W / 40.42750; -105.03194 49,048 0.0605 4,961 Big Thompson River via inlet canal Boyd Lake Dam Boyd Lake Frozen in January 2013.JPG
34 Two Buttes Reservoir Baca, Prowers 37°38′07″N 102°33′03″W / 37.63528°N 102.55083°W / 37.63528; -102.55083 48,720 0.0601 4,232 Two Buttes Creek Two Buttes Dam Two Buttes Reservoir.JPG
35 Santa Maria Reservoir Mineral 37°48′06″N 107°05′35″W / 37.80167°N 107.09306°W / 37.80167; -107.09306 43,500 0.0537 9,488 North Clear Creek via inlet canal none
36 Homestake Reservoir Pitkin County, Colorado, Eagle 39°21′43″N 106°27′59″W / 39.36194°N 106.46639°W / 39.36194; -106.46639 42,822 0.0528 10,266 Homestake Creek Homestake Project Dam
37 Gross Reservoir Boulder 39°57′00″N 105°21′38″W / 39.95000°N 105.36056°W / 39.95000; -105.36056 41,920 0.0517 7,290 South Boulder Creek Gross Dam Gross Reservoir.JPG
38 Lemon Reservoir La Plata 37°23′43″N 107°39′43″W / 37.39528°N 107.66194°W / 37.39528; -107.66194 39,792 0.0491 8,130 Florida River Lemon Dam Lemon dam.jpg
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