46% Colorado River Water 84% Supply Report
48% System Contents: 25.10 MAF 62% Lake Powell 3,700’ Crystal As of January 25, 2021 40%, 9.73 MAF Reservoir Current Elevation 91% 3,577’ Reservoir Capacities (MAF) 1,220’ Lake Mead Mid-Elevation 63% Reservoir Current Change* Maximum Release 3,575’ 40%, 10.57 MAF Lake Mead 10.47 + 0.16 25.90 Current Elevation 1,085’ Lake Powell 9.73 - 0.47 24.30 Tier 1 Shortage Flaming Gorge Reservoir 3.15 - 0.01 3.75 1,075’ Fontenelle Reservoir 0.16 - 0.03 0.34 Navajo Reservoir 1.07 - 0.01 1.70 Blue Mesa Reservoir 0.40 0.00 0.83 Morrow Point Reservoir 0.11 0.00 0.12 Crystal Reservoir 0.02 0.00 0.03
* With respect to previous month’s report 1 PRESENTATION TITLE | DD.MM.YY As of 1/26/2021, snow accumulation in the Green River Basin (which contributes ~33% of the flows into Lake Powell) is at 6.0 in. (blue line), which is 67% of the 30-year median for this date of 9.0 in. (purple line) and is approximately half of last year’s SWE for this date (green line).
Snow accumulation in the Upper Colorado River Basin (contributes ~42%) to date is at 6.2 in., which is 71% of the 30-year median for this date of 8.7 in.
Snow accumulation in the San Juan River Basin (contributes ~13%) to date is at 10.7 in., which is 88% of the 30-year median for this date of 12.2 in.
For the overall Colorado River Basin above Lake Powell, the snow accumulation to date is at 6.6 in., which is 71% of the 30-year median for this date of 9.2 in. Powell Pool Elevations - January 2021 24-Month Study 3,700
WY 2020 Equalization Line = 3,657' WY 2021 Equalization Line = 3,659' WY 2022 Equalization Line = 3,660'
3,650
Upper Elevation Balancing Tier
3,600 3,575'
Mid Elevation Release Tier 3,550 3,525'
3,500 EOCY 2022 Lower Elevation Balancing Tier MAX = 3,623' MOST = 3,578' Powell Pool Elevation (ft amsl) (ft Elevation Pool Powell EOCY 2021 MIN = 3,519' 3,450 MAX = 3,578' MOST = 3,559' MIN = 3,537' Current Month Current 3,400
Bottom of Lower Elevation Balancing = 3,370'
3,350 12/31/2019 12/30/2020 12/31/2021 12/31/2022
| MOST MIN MAX Historic Mead Pool Elevations - January 2021 24-Month Study 1,140
1,120 EOCY 2021 MAX = 1,089' MOST = 1,070' EOCY 2022 MIN = 1,068' MAX = 1,080' MOST = 1,057' 1,100 MIN = 1,054' 1,090'
Tier 0 1,080 1,075'
Tier 1
1,060 Mead Pool Elevation (ft amsl) (ft Elevation Pool Mead
1,050'
Tier 2
1,040 Month Current
1,025' Tier 3 1,020 12/31/2019 12/30/2020 12/31/2021 12/31/2022
| MOST MIN MAX Historic