Colorado River Basin Reservoirs: Monitored Water Supply Reservoirs are 65.1% full on 2025-09-27

Historical Data

Date Percent Full Reservoir Storage
(acre-ft) 		Conservation Storage
(acre-ft) 		Conservation Capacity
(acre-ft)
Today 2025-09-27 65.1 2,674,358 2,617,223 4,019,576
Yesterday 2025-09-26 65.1 2,674,490 2,617,355 4,019,576
2 days ago 2025-09-25 65.2 2,677,436 2,620,301 4,019,576
1 week ago 2025-09-20 65.4 2,687,918 2,630,783 4,019,576
1 month ago 2025-08-27 67.1 2,755,268 2,698,133 4,019,576
3 months ago 2025-06-27 44.8 1,856,024 1,798,889 4,019,576
6 months ago 2025-03-27 43.4 1,799,871 1,742,736 4,019,576
1 year ago 2024-09-27 46.9 1,927,082 1,863,908 3,975,089
*

 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 2025-09-26 Water Supply 95.9 492.17 -0.63 23,597 22,988 23,972 1,544
Brady Creekas of 2025-09-26 Water Supply 92.3 1,741.84 -1.16 28,223 26,601 28,808 1,926
Brownwoodas of 2025-09-26 Water Supply 90.6 1,423.03 -1.57 118,505 118,505 130,868 6,409
Buchananas of 2025-09-26 Water Supply 95.7 1,018.33 -1.67 843,157 829,495 866,694 22,115
Champion Creekas of 2025-09-26 Water Supply 44.0 2,063.28 -19.72 18,288 18,288 41,580 878
Colemanas of 2025-09-26 Water Supply 90.2 1,715.40 -2.10 34,360 34,342 38,075 1,746
Colorado City Water Supply 59.7 2,060.62 -9.58 18,360 18,360 30,758 - n.a. -
E V Spence Water Supply 13.8 1,848.31 -49.69 71,152 71,152 517,272 4,186
Hords Creekas of 2025-09-26 Water Supply and Flood Control 61.9 1,892.70 -7.30 5,025 5,022 8,109 347
Inksas of 2025-09-26 Water Supply 94.5 887.05 -0.95 13,257 12,974 13,729 778
J B Thomasas of 2025-09-26 Water Supply 34.2 2,234.14 -23.86 69,136 68,463 199,931 4,032
Lyndon B Johnsonas of 2025-09-26 Water Supply 98.2 824.69 -0.31 129,628 110,788 112,778 6,403
Marble Fallsas of 2025-09-26 Water Supply 95.7 736.46 -0.54 7,269 7,269 7,597 603
Nasworthyas of 2025-09-26 Water Supply 86.1 1,871.77 -0.94 8,775 8,282 9,615 1,237
O C Fisheras of 2025-09-26 Water Supply and Flood Control 16.4 1,877.26 -30.74 18,957 18,956 115,742 1,495
O H Ivieas of 2025-09-26 Water Supply 49.8 1,533.49 -18.01 276,163 276,163 554,340 - n.a. -
Oak Creekas of 2025-09-26 Water Supply 22.2 1,978.86 -21.14 8,847 8,697 39,210 741
Travisas of 2025-09-26 Water Supply and Flood Control 85.2 671.97 -9.03 952,623 935,591 1,098,044 16,895
Twin Buttes Water Supply 13.9 1,906.70 -33.50 29,036 25,287 182,454 1,904