# List of largest reservoirs in Colorado

This is a list of the largest reservoirs in the state of Colorado. All thirty-nine 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 m$^3$). The total storage of the reservoirs on this list is 3,804,458 acre⋅ft (4.7 billion m$^3$), although not all is allocated for use by Colorado.

## Reservoirs

Download coordinates as:
* KML
* GPX (all coordinates)
* GPX (primary coordinates)
* GPX (secondary coordinates)
* Key
* † denotes reservoir not entirely in Colorado
* ‡ denotes that reservoir is offstream and fed by canals

## List

| Rank | Name | County(s) | Coordinates | Volume (acre-feet) | Volume (km$^3$) | Elevation | Inflow | Dam(s) |
| 1 | Navajo Reservoir | Archuleta, Rio Arriba†, San Juan† | 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 Project‡ | Dixon Canyon, Spring Canyon, Soldier Canyon, Horsetooth |
| 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 |
| 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 |
| 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 |
| 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 Tunnel‡ | Sugar Loaf Dam |
| 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 |
| 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 |
| 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 Project‡ | Carter Lake Dam |
| 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 |
| 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 |
| 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 canal‡ | 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 |
| 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 |
| 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 canal‡ | 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 |
| 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 |
| 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 canal‡ | 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 canal‡ | |
| 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 |
| 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 |
| 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 |
| 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, 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 | Middle Fork 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 |
| 38 | Rampart Reservoir | El Paso | 38°58′51″N 104°58′12″W﻿ / ﻿38.98083°N 104.97000°W﻿ / 38.98083; -104.97000 | 41,000 | 0.0510 | 8,006 | West Monument Creek | Rampart Dam |
| 39 | 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 |