Colorado River Basin Reservoirs: Monitored Water Supply Reservoirs are 59.9% full on 2026-04-20

Historical Data

Date Percent Full Reservoir Storage
(acre-ft) 		Conservation Storage
(acre-ft) 		Conservation Capacity
(acre-ft)
Most recent 2026-04-20 59.9 2,464,282 2,407,147 4,019,576
1 day prior 2026-04-19 59.9 2,464,021 2,406,886 4,019,576
2 days prior 2026-04-18 59.9 2,464,697 2,407,562 4,019,576
1 week prior 2026-04-13 59.8 2,461,831 2,404,696 4,019,576
1 month prior 2026-03-20 60.4 2,483,570 2,426,435 4,019,576
3 months prior 2026-01-20 61.3 2,522,106 2,464,971 4,019,576
6 months prior 2025-10-20 63.4 2,603,973 2,546,838 4,019,576
1 year prior 2025-04-20 42.7 1,773,220 1,716,085 4,019,576
*

 Percent Full is based on Conservation Storage and Conservation Capacity and doesn't account for storage in flood pool.

Area Map

recent reservoir storage map

Reservoir Storage

Reservoir Type Percent Full Water Level
(ft) 		Height Above Conservation Pool
(ft) 		Reservoir Storage
(acre-ft) 		Conservation Storage
(acre-ft) 		Conservation Capacity
(acre-ft) 		Surface Area
(acres)
Austinas of 2026-04-13 Water Supply 96.2 492.22 -0.58 23,674 23,065 23,972 1,546
Brady Creekas of 2026-04-20 Water Supply 95.2 1,742.27 -0.73 29,040 27,418 28,808 1,966
Brownwoodas of 2026-04-20 Water Supply 82.5 1,421.34 -3.26 107,968 107,968 130,868 6,061
Buchananas of 2026-04-13 Water Supply 94.8 1,017.98 -2.02 835,428 821,766 866,694 22,054
Champion Creekas of 2026-04-20 Water Supply 39.7 2,061.30 -21.70 16,526 16,526 41,580 830
Colemanas of 2026-04-20 Water Supply 87.7 1,714.85 -2.65 33,404 33,386 38,075 1,729
Colorado Cityas of 2026-04-20 Water Supply 52.9 2,058.72 -11.48 16,256 16,256 30,758 - n.a. -
E V Spenceas of 2026-04-20 Water Supply 11.5 1,845.39 -52.61 59,638 59,638 517,272 3,789
Hords Creekas of 2026-04-20 Water Supply and Flood Control 54.8 1,890.96 -9.04 4,450 4,447 8,109 315
Inksas of 2026-04-13 Water Supply 94.6 887.07 -0.93 13,273 12,990 13,729 780
J B Thomasas of 2026-04-20 Water Supply 26.7 2,230.13 -27.87 54,035 53,362 199,931 3,507
Lyndon B Johnsonas of 2026-04-13 Water Supply 97.4 824.55 -0.45 128,733 109,893 112,778 6,390
Marble Fallsas of 2026-04-13 Water Supply 94.9 736.36 -0.64 7,209 7,209 7,597 601
Nasworthyas of 2026-04-20 Water Supply 87.3 1,871.86 -0.85 8,886 8,393 9,615 1,244
O C Fisheras of 2026-04-20 Water Supply and Flood Control 14.3 1,875.53 -32.47 16,529 16,528 115,742 1,330
O H Ivieas of 2026-04-20 Water Supply 47.1 1,532.19 -19.31 260,980 260,980 554,340 - n.a. -
Oak Creekas of 2026-04-20 Water Supply 18.4 1,976.61 -23.39 7,353 7,203 39,210 644
Travisas of 2026-04-13 Water Supply and Flood Control 73.0 663.52 -17.48 818,222 801,190 1,098,044 14,933
Twin Buttesas of 2026-04-20 Water Supply and Flood Control 10.4 1,902.99 -37.21 22,678 18,929 182,454 1,570