To: All Annual Operating Plan Recipients From: Lower ...Consumptive use for Nevada above Hoover...
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To: All Annual Operating Plan Recipients From: Lower Colorado Basin Region Boulder Canyon Operations Office Michael Bernardo, P.E. River Operations Manager P.O. Box 61470 Boulder City, NV 89006-1470 Phone: 702-293-8111 The operation of Lake Powell and Lake Mead in this April 2020 24-Month Study is pursuant to the December 2007 Record of Decision on Colorado River Interim Guidelines for Lower Basin Shortages and the Coordinated Operations of Lake Powell and Lake Mead (Interim Guidelines) and reflects the 2020 Annual Operating Plan (AOP). Pursuant to the Interim Guidelines, the August 2019 24-Month Study projections of the January 1, 2020, system storage and reservoir water surface elevations set the operational tier for the coordinated operation of Lake Powell and Lake Mead during 2020. Consistent with Section 6.B of the Interim Guidelines, Lake Powell’s operations in water year 2020 will be governed by the Upper Elevation Balancing Tier. With an 8.23 million acre-foot (maf) release from Lake Powell in water year 2020, the April 2020 24-Month Study projects the end of water year elevation at Lake Powell to be above 3,575 feet, and the end of water year elevation at Lake Mead to be above 1,075 feet. Therefore, in accordance with Section 6.B.1 of the Interim Guidelines, Lake Powell will continue to release 8.23 maf through the remainder of water year 2020. Consistent with Section 2.B.5 of the Interim Guidelines, the Intentionally Created Surplus (ICS) Surplus Condition is the criterion governing the operation of Lake Mead for calendar year 2020. In addition, Section III.B of Exhibit 1 to the Lower Basin Drought Contingency Plan (DCP) Agreement will also govern the operation of Lake Mead in calendar year 2020. The 2020 AOP is available for download at: https://www.usbr.gov/lc/region/g4000/aop/AOP20.pdf. The Interim Guidelines are available for download at: https://www.usbr.gov/lc/region/programs/strategies/RecordofDecision.pdf . The Colorado River DCPs are available for download at: https://www.usbr.gov/lc/region/programs/dcp.html. Current runoff projections into Lake Powell are provided by the National Weather Service’s Colorado Basin River Forecast Center and are as follows: Observed unregulated inflow into Lake Powell for the month of March was 0.475 maf or 71 percent of the 30-year average from 1981 to 2010. The April unregulated inflow forecast for Lake Powell is 0.730 maf or 69 percent of the 30-year average. The 2020 April through July unregulated inflow forecast is 5.600 maf or 78 percent of average. In this study, the calendar year 2020 diversion for Metropolitan Water District of Southern California (MWD) is forecasted to be 0.901 maf. The calendar year 2020 diversion for the Central Arizona Project (CAP) is forecasted to be 1.417 maf. Consumptive use for Nevada above Hoover (SNWP Use) is forecasted to be 0.246 maf for calendar year 2020. Due to changing Lake Mead elevations, Hoover’s generator capacity is adjusted based on estimated effective capacity and plant availability. The estimated effective capacity is based on projected Lake Mead elevations. Unit capacity tests will be performed as the lake elevation changes. This study reflects these changes in the projections. Hoover, Davis, and Parker historical gross energy figures come from PO&M reports provided by the Lower Colorado Region’s Power Office, Bureau of Reclamation, Boulder City, Nevada. Questions regarding these historical energy numbers can be directed to Colleen Dwyer at (702) 293-8420.
Transcript of To: All Annual Operating Plan Recipients From: Lower ...Consumptive use for Nevada above Hoover...
To: All Annual Operating Plan Recipients From: Lower Colorado Basin Region Boulder Canyon Operations Office Michael Bernardo, P.E. River Operations Manager P.O. Box 61470 Boulder City, NV 89006-1470 Phone: 702-293-8111 The operation of Lake Powell and Lake Mead in this April 2020 24-Month Study is pursuant to the December 2007 Record of Decision on Colorado River Interim Guidelines for Lower Basin Shortages and the Coordinated Operations of Lake Powell and Lake Mead (Interim Guidelines) and reflects the 2020 Annual Operating Plan (AOP). Pursuant to the Interim Guidelines, the August 2019 24-Month Study projections of the January 1, 2020, system storage and reservoir water surface elevations set the operational tier for the coordinated operation of Lake Powell and Lake Mead during 2020. Consistent with Section 6.B of the Interim Guidelines, Lake Powell’s operations in water year 2020 will be governed by the Upper Elevation Balancing Tier. With an 8.23 million acre-foot (maf) release from Lake Powell in water year 2020, the April 2020 24-Month Study projects the end of water year elevation at Lake Powell to be above 3,575 feet, and the end of water year elevation at Lake Mead to be above 1,075 feet. Therefore, in accordance with Section 6.B.1 of the Interim Guidelines, Lake Powell will continue to release 8.23 maf through the remainder of water year 2020. Consistent with Section 2.B.5 of the Interim Guidelines, the Intentionally Created Surplus (ICS) Surplus Condition is the criterion governing the operation of Lake Mead for calendar year 2020. In addition, Section III.B of Exhibit 1 to the Lower Basin Drought Contingency Plan (DCP) Agreement will also govern the operation of Lake Mead in calendar year 2020. The 2020 AOP is available for download at: https://www.usbr.gov/lc/region/g4000/aop/AOP20.pdf. The Interim Guidelines are available for download at: https://www.usbr.gov/lc/region/programs/strategies/RecordofDecision.pdf. The Colorado River DCPs are available for download at: https://www.usbr.gov/lc/region/programs/dcp.html. Current runoff projections into Lake Powell are provided by the National Weather Service’s Colorado Basin River Forecast Center and are as follows: Observed unregulated inflow into Lake Powell for the month of March was 0.475 maf or 71 percent of the 30-year average from 1981 to 2010. The April unregulated inflow forecast for Lake Powell is 0.730 maf or 69 percent of the 30-year average. The 2020 April through July unregulated inflow forecast is 5.600 maf or 78 percent of average. In this study, the calendar year 2020 diversion for Metropolitan Water District of Southern California (MWD) is forecasted to be 0.901 maf. The calendar year 2020 diversion for the Central Arizona Project (CAP) is forecasted to be 1.417 maf. Consumptive use for Nevada above Hoover (SNWP Use) is forecasted to be 0.246 maf for calendar year 2020. Due to changing Lake Mead elevations, Hoover’s generator capacity is adjusted based on estimated effective capacity and plant availability. The estimated effective capacity is based on projected Lake Mead elevations. Unit capacity tests will be performed as the lake elevation changes. This study reflects these changes in the projections. Hoover, Davis, and Parker historical gross energy figures come from PO&M reports provided by the Lower Colorado Region’s Power Office, Bureau of Reclamation, Boulder City, Nevada. Questions regarding these historical energy numbers can be directed to Colleen Dwyer at (702) 293-8420.
Most Probable Inflow*
April 2020 24-Month Study
Fontenelle Reservoir
OPERATION PLAN FOR COLORADO RIVER SYSTEM RESERVOIRS
Reservoir Elev
End of Month
(Ft)
Live
Storage
(1000 Ac-Ft)
Total
Release
(1000 Ac-Ft)
Regulated
Inflow
(1000 Ac-Ft)Date
Evap
Losses
(1000 Ac-Ft)
Power
Release
(1000 Ac-Ft)
Bypass
Release
(1000 Ac-Ft)
114 71 6474.10 137 1 71 0Apr 2019*
167 98 6486.46 204 1 98 0May 2019H
337 278 6494.89 261 2 107 171Jun 2019I
184 125 6502.48 317 3 86 39Jul 2019S
57 74 6499.98 298 2 74 0Aug 2019T
41 66 6496.36 271 2 19 47Sep 2019O
1101 1077 15 799 278WY 2019
50 67 6493.83 253 1 61 7Oct 2019R
46 63 6491.39 236 1 63 0Nov 2019I
36 64 6487.01 208 1 64 0Dec 2019C
34 64 6481.89 177 1 64 0Jan 2020A
32 60 6476.34 147 1 60 0Feb 2020L
54 65 6473.94 136 1 65 0Mar 2020*
85 69 6477.12 152 1 69 0Apr 2020
140 82 6486.97 208 1 82 0May 2020
275 185 6499.64 296 2 104 81Jun 2020
150 128 6502.22 316 3 103 25Jul 2020
60 73 6500.28 301 2 73 0Aug 2020
45 62 6497.69 282 2 20 42Sep 2020
1007 982 15 827 155WY 2020
48 65 6495.24 264 1 65 0Oct 2020
42 65 6491.75 240 1 65 0Nov 2020
32 68 6486.20 203 1 68 0Dec 2020
30 68 6479.78 166 1 68 0Jan 2021
28 61 6472.85 132 0 61 0Feb 2021
53 70 6468.77 114 0 70 0Mar 2021
85 71 6471.91 127 1 71 0Apr 2021
164 91 6485.40 198 1 91 0May 2021
299 199 6499.59 296 2 103 96Jun 2021
178 141 6503.94 329 3 102 40Jul 2021
77 97 6500.96 306 2 95 2Aug 2021
46 71 6497.30 279 2 20 51Sep 2021
1081 1069 15 879 189WY 2021
49 68 6494.49 259 1 68 0Oct 2021
42 65 6491.01 235 1 65 0Nov 2021
32 68 6485.40 198 1 68 0Dec 2021
30 68 6478.81 161 1 68 0Jan 2022
28 61 6471.73 127 0 61 0Feb 2022
53 70 6467.54 109 0 70 0Mar 2022
* Based on the Colorado River Basin Forecast Center's Most Probable Water Supply Forecast Model Run ID: 3117 Processed On: 4/10/2020 3:45:27PM
Most Probable Inflow*
April 2020 24-Month Study
Flaming Gorge Reservoir
OPERATION PLAN FOR COLORADO RIVER SYSTEM RESERVOIRS
Reservoir Elev
End of Month
(Ft)
Live
Storage
(1000 Ac-Ft)
Total
Release
(1000 Ac-Ft)
Evap
Losses
(1000 Ac-Ft)Date
Bank
Storage
(1000 Ac-Ft)
Power
Release
(1000 Ac-Ft)
Unreg
Inflow
(1000 Ac-Ft)
Jensen
Flow
(1000 Ac-Ft)
Bypass
Release
(1000 Ac-Ft)
Reg
Inflow
(1000 Ac-Ft)
71 6028.79 71 341 3303 133 5 0Apr 2019* 240 198
99 6030.71 99 568 3376 136 8 0May 2019H 252 183
215 6032.55 315 950 3448 139 11 100Jun 2019I 460 400
100 6033.89 100 376 3502 141 14 0Jul 2019S 227 169
109 6032.79 109 151 3458 139 13 0Aug 2019T 59 76
113 6031.57 113 134 3410 137 11 0Sep 2019O 49 74
1315 1415 3351 82 100WY 2019 1553 1529
80 6031.13 80 109 3393 136 7 0Oct 2019R 53 70
81 6030.99 81 115 3387 136 4 0Nov 2019I 63 79
128 6029.43 128 169 3327 134 2 0Dec 2019C 39 67
133 6028.03 133 168 3274 132 2 0Jan 2020A 49 80
124 6026.75 124 157 3225 130 2 0Feb 2020L 47 76
119 6026.61 119 228 3220 130 3 0Mar 2020* 106 117
116 6026.69 116 351 3223 130 5 0Apr 2020 140 124
61 6028.80 61 586 3303 133 8 0May 2020 210 152
222 6029.73 222 732 3339 134 11 0Jun 2020 360 270
71 6031.30 71 161 3399 137 14 0Jul 2020 170 148
86 6030.90 86 107 3384 136 13 0Aug 2020 70 83
95 6029.94 95 110 3347 135 11 0Sep 2020 50 67
1317 1317 2994 82 0WY 2020 1357 1332
73 6029.73 73 101 3338 134 7 0Oct 2020 55 72
97 6029.03 97 127 3312 133 3 0Nov 2020 50 73
148 6027.03 148 173 3236 130 2 0Dec 2020 35 71
148 6025.19 148 173 3167 127 2 0Jan 2021 40 78
133 6023.69 133 161 3112 125 2 0Feb 2021 45 78
58 6025.21 58 135 3168 127 3 0Mar 2021 102 120
57 6026.71 57 272 3224 130 5 0Apr 2021 134 119
81 6028.85 81 613 3305 133 8 0May 2021 245 173
211 6030.55 211 631 3370 136 11 0Jun 2021 390 290
71 6032.75 71 171 3456 139 14 0Jul 2021 210 174
86 6033.00 86 111 3466 139 13 0Aug 2021 89 109
83 6032.65 83 102 3453 139 12 0Sep 2021 55 81
1246 1246 2770 81 0WY 2021 1449 1437
69 6032.69 69 101 3454 139 8 0Oct 2021 59 78
103 6031.90 103 135 3423 138 4 0Nov 2021 51 74
154 6029.80 154 179 3341 134 2 0Dec 2021 35 71
154 6027.84 154 179 3267 131 2 0Jan 2022 40 78
139 6026.23 139 167 3206 129 2 0Feb 2022 45 78
111 6026.38 111 187 3212 129 3 0Mar 2022 102 120
* Based on the Colorado River Basin Forecast Center's Most Probable Water Supply Forecast Model Run ID: 3117 Processed On: 4/10/2020 3:45:27PM
Most Probable Inflow*
April 2020 24-Month Study
Taylor Park Reservoir
OPERATION PLAN FOR COLORADO RIVER SYSTEM RESERVOIRS
Reservoir Elev
End of Month
(Ft)
Live
Storage
(1000 Ac-Ft)
Total
Release
(1000 Ac-Ft)
Regulated
Inflow
(1000 Ac-Ft)Date
* Apr 2019 10 7 9306.14 64
H May 2019 21 26 9302.64 59
I Jun 2019 68 38 9320.92 89
S Jul 2019 47 32 9328.49 103
T Aug 2019 15 24 9323.77 94
O Sep 2019 7 20 9316.42 81
WY 2019 191 168
R Oct 2019 7 11 9314.38 77
I Nov 2019 5 6 9313.69 76
C Dec 2019 5 6 9313.35 75
A Jan 2020 5 6 9312.60 74
L Feb 2020 4 6 9311.82 73
* Mar 2020 5 6 9310.93 71
Apr 2020 6 6 9310.96 71
May 2020 22 13 9316.23 80
Jun 2020 35 22 9323.38 93
Jul 2020 15 22 9319.87 87
Aug 2020 8 19 9313.48 76
Sep 2020 6 18 9306.06 64
WY 2020 123 140
Oct 2020 6 7 9305.08 62
Nov 2020 5 5 9304.90 62
Dec 2020 5 5 9304.55 62
Jan 2021 4 5 9303.97 61
Feb 2021 4 5 9303.34 60
Mar 2021 4 5 9302.81 59
Apr 2021 9 10 9301.93 58
May 2021 28 14 9311.38 72
Jun 2021 42 20 9323.70 94
Jul 2021 20 24 9321.91 90
Aug 2021 10 19 9317.10 82
Sep 2021 7 18 9311.08 72
WY 2021 144 137
Oct 2021 7 12 9308.02 67
Nov 2021 5 5 9308.06 67
Dec 2021 5 5 9307.72 66
Jan 2022 4 5 9307.17 65
Feb 2022 4 5 9306.57 65
Mar 2022 4 5 9306.07 64
* Based on the Colorado River Basin Forecast Center's Most Probable Water Supply Forecast Model Run ID: 3117 Processed On: 4/10/2020 3:45:27PM
Most Probable Inflow*
April 2020 24-Month Study
Blue Mesa Reservoir
OPERATION PLAN FOR COLORADO RIVER SYSTEM RESERVOIRS
Reservoir Elev
End of Month
(Ft)
Live
Storage
(1000 Ac-Ft)
Total
Release
(1000 Ac-Ft)
Regulated
Inflow
(1000 Ac-Ft)Date
Evap
Losses
(1000 Ac-Ft)
Power
Release
(1000 Ac-Ft)
Bypass
Release
(1000 Ac-Ft)
UnReg
Inflow
(1000 Ac-Ft)
* Apr 2019 118 33 7453.91 335 0 33 0 121
H May 2019 218 105 7471.68 447 1 86 18 214
I Jun 2019 444 194 7504.14 696 1 124 70 471
S Jul 2019 266 138 7518.61 823 2 87 51 282
T Aug 2019 100 137 7514.39 784 1 76 62 92
O Sep 2019 45 93 7508.84 736 1 45 47 32
WY 2019 1320 859 7 601 260 1344
R Oct 2019 32 85 7502.51 682 1 63 3 28
I Nov 2019 32 72 7497.63 642 0 54 0 31
C Dec 2019 30 85 7490.79 588 0 70 0 30
A Jan 2020 28 61 7486.45 554 0 44 0 26
L Feb 2020 25 41 7484.20 537 0 30 0 23
* Mar 2020 36 38 7483.85 534 0 38 0 34
Apr 2020 55 63 7482.73 526 1 63 0 55
May 2020 151 183 7478.19 493 1 183 0 160
Jun 2020 217 44 7500.37 664 1 44 0 230
Jul 2020 87 82 7500.71 667 1 82 0 80
Aug 2020 56 76 7498.15 646 1 65 11 45
Sep 2020 47 73 7494.73 619 1 73 0 35
WY 2020 795 904 8 811 14 778
Oct 2020 38 64 7491.40 592 1 64 0 36
Nov 2020 31 15 7493.34 608 0 15 0 30
Dec 2020 26 42 7491.30 592 0 42 0 26
Jan 2021 25 42 7489.09 574 0 42 0 24
Feb 2021 23 44 7486.42 554 0 44 0 22
Mar 2021 37 45 7485.28 545 0 0 45 36
Apr 2021 78 53 7488.56 570 1 0 53 77
May 2021 207 29 7510.12 747 1 6 23 221
Jun 2021 239 180 7516.65 805 1 180 0 261
Jul 2021 120 99 7518.79 824 2 99 0 117
Aug 2021 72 108 7514.65 787 1 108 0 63
Sep 2021 48 95 7509.16 739 1 95 0 38
WY 2021 945 816 9 696 120 952
Oct 2021 43 83 7504.42 698 1 83 0 38
Nov 2021 31 57 7501.25 672 0 57 0 31
Dec 2021 26 104 7491.59 594 0 104 0 26
Jan 2022 25 57 7487.47 562 0 57 0 24
Feb 2022 23 38 7485.51 547 0 38 0 22
Mar 2022 37 43 7484.61 540 0 43 0 36
* Based on the Colorado River Basin Forecast Center's Most Probable Water Supply Forecast Model Run ID: 3117 Processed On: 4/10/2020 3:45:27PM
Most Probable Inflow*
April 2020 24-Month Study
Morrow Point Reservoir
OPERATION PLAN FOR COLORADO RIVER SYSTEM RESERVOIRS
Reservoir Elev
End of Month
(Ft)
Total
Release
(1000 Ac-Ft)
Blue Mesa
Release
(1000 Ac-Ft)Date
Side
Inflow
(1000 Ac-Ft)
Power
Release
(1000 Ac-Ft)
Bypass
Release
(1000 Ac-Ft)
Unreg
Inflow
(1000 Ac-Ft)
Live
Storage
(1000 Ac-Ft)
Total
Inflow
(1000 Ac-Ft)
47 113 7155.16 41 41 15 33 0Apr 2019* 136
130 113 7154.68 131 127 25 105 0May 2019H 240
235 113 7155.10 234 186 41 194 0Jun 2019I 512
150 112 7154.18 151 151 13 138 0Jul 2019S 295
139 112 7153.99 139 137 2 137 0Aug 2019T 93
93 110 7151.09 96 60 1 93 0Sep 2019O 32
961 949 858 102 859 0WY 2019 1446
86 107 7147.86 89 78 1 85 0Oct 2019R 29
72 108 7148.85 71 71 1 72 0Nov 2019I 31
85 108 7149.10 85 85 1 85 0Dec 2019C 30
61 107 7147.47 63 63 1 61 0Jan 2020A 27
41 107 7147.88 41 41 0 41 0Feb 2020L 23
40 106 7145.65 42 42 2 38 0Mar 2020* 36
68 107 7147.94 66 66 5 63 0Apr 2020 60
203 107 7147.94 203 203 20 183 0May 2020 180
59 107 7147.94 59 59 15 44 0Jun 2020 245
87 107 7147.94 87 87 5 82 0Jul 2020 85
79 107 7147.94 79 79 3 76 0Aug 2020 48
75 107 7147.94 75 75 2 73 0Sep 2020 37
958 960 949 55 904 0WY 2020 832
66 107 7147.94 66 66 2 64 0Oct 2020 38
17 107 7147.94 17 17 2 15 0Nov 2020 32
44 107 7147.94 44 44 2 42 0Dec 2020 28
44 107 7147.94 44 44 2 42 0Jan 2021 27
46 107 7147.94 46 46 3 44 0Feb 2021 25
49 107 7147.94 49 49 4 45 0Mar 2021 40
64 107 7147.94 64 64 11 53 0Apr 2021 88
55 107 7147.94 55 55 26 29 0May 2021 247
200 107 7147.94 200 200 20 180 0Jun 2021 281
105 107 7147.94 105 105 6 99 0Jul 2021 123
112 107 7147.94 112 112 3 108 0Aug 2021 67
98 107 7147.94 98 98 3 95 0Sep 2021 41
900 900 900 84 816 0WY 2021 1037
86 107 7147.94 86 86 3 83 0Oct 2021 41
59 107 7147.94 59 59 2 57 0Nov 2021 33
106 107 7147.94 106 106 2 104 0Dec 2021 28
59 107 7147.94 59 59 2 57 0Jan 2022 27
40 107 7147.94 40 40 3 38 0Feb 2022 25
47 107 7147.94 47 47 4 43 0Mar 2022 40
* Based on the Colorado River Basin Forecast Center's Most Probable Water Supply Forecast Model Run ID: 3117 Processed On: 4/10/2020 3:45:27PM
Most Probable Inflow*
April 2020 24-Month Study
Crystal Reservoir
OPERATION PLAN FOR COLORADO RIVER SYSTEM RESERVOIRS
Reservoir Elev
End of Month
(Ft)
Live
Storage
(1000 Ac-Ft)
Total
Release
(1000 Ac-Ft)
Morrow
Release
(1000 Ac-Ft)Date
Total
Inflow
(1000 Ac-Ft)
Bypass
Release
(1000 Ac-Ft)
Below Tunnel
Flow
(1000 Ac-Ft)
Unreg
Inflow
(1000 Ac-Ft)
Tunnel
Flow
(1000 Ac-Ft)
Power
Release
(1000 Ac-Ft)
Side
Inflow
(1000 Ac-Ft)
55 26 6753.29 55 29 17 55 41 0Apr 2019* 150 15
108 47 6759.30 153 105 19 155 131 31May 2019H 264 24
115 51 6753.12 282 231 17 280 234 73Jun 2019I 558 46
121 59 6746.79 178 124 15 177 151 57Jul 2019S 321 26
119 64 6733.35 147 87 12 144 139 28Aug 2019T 98 5
94 61 6750.61 95 33 16 99 96 0Sep 2019O 36 4
768 344 1087 747 1091 949 210WY 2019 1587 142
92 64 6749.75 92 29 16 92 89 0Oct 2019R 33 3
76 2 6746.90 76 72 15 75 71 0Nov 2019I 35 4
89 0 6746.40 89 86 15 89 85 0Dec 2019C 34 4
58 1 6745.61 67 64 15 67 63 9Jan 2020A 31 4
24 1 6748.71 43 43 16 44 41 19Feb 2020L 26 3
45 11 6754.38 46 33 17 47 42 1Mar 2020* 42 6
77 42 6749.63 77 35 16 76 66 0Apr 2020 70 10
136 62 6749.63 228 166 16 228 203 92May 2020 205 25
89 61 6749.63 89 28 16 89 59 0Jun 2020 275 30
92 65 6749.63 92 27 16 92 87 0Jul 2020 90 5
86 65 6749.63 86 21 16 86 79 0Aug 2020 55 7
79 55 6749.63 79 24 16 79 75 0Sep 2020 41 4
943 428 1066 629 1066 960 122WY 2020 937 105
70 30 6749.63 70 40 16 70 66 0Oct 2020 43 5
21 0 6749.63 21 21 16 21 17 0Nov 2020 37 4
49 0 6749.63 49 49 16 49 44 0Dec 2020 32 5
49 0 6749.63 49 49 16 49 44 0Jan 2021 31 5
50 0 6749.63 50 50 16 50 46 0Feb 2021 29 4
55 5 6749.63 55 50 16 55 49 0Mar 2021 46 6
76 42 6749.63 76 34 16 76 64 0Apr 2021 101 12
89 62 6749.63 89 27 16 89 55 0May 2021 281 34
132 61 6749.63 234 173 16 234 200 102Jun 2021 315 34
120 65 6749.63 120 55 16 120 105 0Jul 2021 138 14
120 65 6749.63 120 55 16 120 112 0Aug 2021 75 8
52 55 6749.63 104 49 16 104 98 52Sep 2021 47 6
884 385 1038 653 1038 900 154WY 2021 1175 138
92 30 6749.63 92 62 16 92 86 0Oct 2021 47 6
64 0 6749.63 64 64 16 64 59 0Nov 2021 38 5
111 0 6749.63 111 111 16 111 106 0Dec 2021 32 5
64 0 6749.63 64 64 16 64 59 0Jan 2022 31 5
44 0 6749.63 44 44 16 44 40 0Feb 2022 29 4
53 5 6749.63 53 48 16 53 47 0Mar 2022 46 6
* Based on the Colorado River Basin Forecast Center's Most Probable Water Supply Forecast Model Run ID: 3117 Processed On: 4/10/2020 3:45:27PM
Most Probable Inflow*
April 2020 24-Month Study
Vallecito Reservoir
OPERATION PLAN FOR COLORADO RIVER SYSTEM RESERVOIRS
Reservoir Elev
End of Month
(Ft)
Live
Storage
(1000 Ac-Ft)
Total
Release
(1000 Ac-Ft)
Regulated
Inflow
(1000 Ac-Ft)Date
* Apr 2019 32 25 7631.32 47
H May 2019 58 41 7640.08 64
I Jun 2019 160 101 7664.36 124
S Jul 2019 69 68 7664.45 124
T Aug 2019 20 38 7657.21 105
O Sep 2019 8 33 7646.82 79
WY 2019 378 316
R Oct 2019 4 13 7643.13 71
I Nov 2019 4 2 7644.14 73
C Dec 2019 4 2 7645.07 75
A Jan 2020 5 2 7646.26 78
L Feb 2020 4 2 7647.01 80
* Mar 2020 6 2 7648.55 84
Apr 2020 15 2 7653.85 97
May 2020 53 31 7662.13 118
Jun 2020 63 56 7664.45 124
Jul 2020 20 41 7656.04 102
Aug 2020 15 38 7646.51 79
Sep 2020 14 29 7639.48 63
WY 2020 206 219
Oct 2020 14 16 7638.00 60
Nov 2020 8 2 7640.67 66
Dec 2020 6 2 7642.71 70
Jan 2021 5 2 7644.27 74
Feb 2021 5 2 7645.58 77
Mar 2021 9 2 7648.40 83
Apr 2021 23 2 7657.02 105
May 2021 71 53 7664.04 123
Jun 2021 70 70 7663.86 123
Jul 2021 29 42 7658.89 109
Aug 2021 20 38 7651.55 91
Sep 2021 17 30 7646.29 78
WY 2021 278 260
Oct 2021 16 17 7645.52 77
Nov 2021 9 2 7648.19 83
Dec 2021 6 2 7650.04 87
Jan 2022 5 2 7651.48 91
Feb 2022 5 2 7652.69 94
Mar 2022 9 2 7655.32 100
* Based on the Colorado River Basin Forecast Center's Most Probable Water Supply Forecast Model Run ID: 3117 Processed On: 4/10/2020 3:45:27PM
Most Probable Inflow*
April 2020 24-Month Study
Navajo Reservoir
OPERATION PLAN FOR COLORADO RIVER SYSTEM RESERVOIRS
Reservoir Elev
End of Month
(Ft)
Live
Storage
(1000 Ac-Ft)
Total
Release
(1000 Ac-Ft)
Azotea
Tunnel Div
(1000 Ac-Ft)Date
Reg
Inflow
(1000 Ac-Ft)
Evap
Losses
(1000 Ac-Ft)
NIIP
Diversion
(1000 Ac-Ft)
Mod Unreg
Inflow
(1000 Ac-Ft)
Farmington
Flow
(1000 Ac-Ft)
203 1117 6040.36 20 102 20 2 24 230Apr 2019*
215 1279 6054.45 25 139 25 3 34 270May 2019H
376 1501 6071.44 114 386 36 4 57 491Jun 2019I
142 1531 6073.56 60 228 47 5 26 171Jul 2019S
52 1459 6068.40 78 104 42 4 6 40Aug 2019T
29 1388 6063.13 67 71 29 3 0 3Sep 2019O
1188 483 1264 211 26 150 1401WY 2019
15 1362 6061.08 33 46 6 2 0 6Oct 2019R
13 1348 6060.04 25 45 0 1 0 15Nov 2019I
15 1326 6058.25 36 62 1 1 0 17Dec 2019C
14 1308 6056.81 31 49 1 1 0 17Jan 2020A
15 1295 6055.76 24 38 3 1 0 17Feb 2020L
29 1292 6055.57 25 36 5 2 2 35Mar 2020*
64 1310 6057.02 22 52 21 2 8 85Apr 2020
136 1382 6062.67 25 135 36 4 22 180May 2020
126 1421 6065.59 30 150 53 4 18 150Jun 2020
45 1374 6062.03 31 81 57 5 1 25Jul 2020
49 1341 6059.48 31 61 48 4 1 28Aug 2020
42 1333 6058.82 22 46 26 3 1 28Sep 2020
563 334 802 256 27 52 601WY 2020
37 1337 6059.15 22 45 9 2 2 36Oct 2020
24 1333 6058.84 26 43 0 1 0 30Nov 2020
21 1331 6058.69 22 37 0 1 0 25Dec 2020
18 1327 6058.39 22 35 0 1 0 22Jan 2021
27 1333 6058.81 21 33 0 1 0 30Feb 2021
77 1372 6061.88 30 53 6 2 9 92Mar 2021
128 1446 6067.49 30 82 22 3 21 170Apr 2021
221 1449 6067.73 178 324 37 4 37 277May 2021
195 1315 6057.35 272 424 53 4 29 224Jun 2021
74 1284 6054.85 43 110 57 4 5 66Jul 2021
61 1263 6053.11 31 69 48 3 2 45Aug 2021
54 1258 6052.70 30 62 26 3 2 43Sep 2021
936 726 1318 258 27 106 1060WY 2021
46 1263 6053.11 31 59 9 2 2 47Oct 2021
27 1259 6052.81 30 48 0 1 0 34Nov 2021
21 1248 6051.91 31 46 0 1 0 25Dec 2021
18 1235 6050.82 31 44 0 1 0 22Jan 2022
27 1234 6050.68 28 40 0 1 0 30Feb 2022
77 1273 6053.94 31 53 6 2 9 92Mar 2022
* Based on the Colorado River Basin Forecast Center's Most Probable Water Supply Forecast Model Run ID: 3117 Processed On: 4/10/2020 3:45:27PM
Most Probable Inflow*
April 2020 24-Month Study
Lake Powell
OPERATION PLAN FOR COLORADO RIVER SYSTEM RESERVOIRS
Reservoir Elev
End of Month
(Ft)
Bank
Storage
(1000 Ac-Ft)
Total
Release
(1000 Ac-Ft)
Regulated
Inflow
(1000 Ac-Ft)Date
Evap
Losses
(1000 Ac-Ft)
Bypass
Release
(1000 Ac-Ft)
Lees
Ferry Gage
(1000 Ac-Ft)
Unreg
Inflow
(1000 Ac-Ft)
EOM
Storage
(1000 Ac-Ft)
PowerPlant
Release
(1000 Ac-Ft)
720 9198 3571.12 720 734 4790 18 899 0Apr 2019* 1242
720 10343 3584.65 720 752 4881 23 1980 0May 2019H 2511
765 12914 3611.82 765 807 5087 41 3583 0Jun 2019I 4206
857 13933 3621.60 857 896 5168 57 2015 0Jul 2019S 2451
900 13610 3618.55 900 932 5143 58 608 0Aug 2019T 472
687 13277 3615.36 687 703 5116 52 379 0Sep 2019O 143
8924 9001 9242 356 11787 77WY 2019 12951
625 13034 3612.99 625 633 5096 35 397 0Oct 2019R 265
626 12855 3611.23 626 630 5082 34 466 0Nov 2019I 404
750 12604 3608.74 750 756 5062 27 506 0Dec 2019C 353
760 12281 3605.48 760 768 5036 8 419 0Jan 2020A 277
675 12011 3602.72 675 687 5015 9 393 0Feb 2020L 288
700 11818 3600.71 700 713 4999 15 505 0Mar 2020* 475
630 11843 3600.97 630 646 5001 23 680 0Apr 2020 730
630 12556 3608.26 630 646 5058 28 1428 0May 2020 1650
650 13788 3620.23 650 667 5157 46 2027 0Jun 2020 2400
750 13768 3620.05 750 774 5155 58 787 0Jul 2020 820
835 13404 3616.58 835 855 5126 57 499 0Aug 2020 400
599 13227 3614.87 599 612 5112 52 459 0Sep 2020 355
8230 8230 8387 390 8566 0WY 2020 8417
640 13074 3613.38 640 649 5100 35 510 0Oct 2020 468
640 12896 3611.64 640 642 5085 34 482 0Nov 2020 452
720 12657 3609.27 720 725 5066 27 488 0Dec 2020 363
860 12303 3605.71 860 871 5038 8 486 0Jan 2021 361
750 12058 3603.20 750 760 5018 9 494 0Feb 2021 393
800 11843 3600.97 800 814 5001 15 583 0Mar 2021 665
710 11957 3602.15 710 726 5010 23 856 0Apr 2021 1056
710 13088 3613.52 710 726 5101 29 1961 0May 2021 2343
750 14698 3628.61 750 767 5230 48 2537 0Jun 2021 2666
850 14755 3629.12 850 874 5234 61 973 0Jul 2021 1091
900 14401 3625.92 900 920 5206 61 578 0Aug 2021 500
670 14200 3624.07 670 684 5190 55 508 0Sep 2021 408
9000 9000 9158 405 10455 0WY 2021 10766
640 14093 3623.08 640 649 5181 38 562 0Oct 2021 512
640 13973 3621.97 640 642 5172 36 547 0Nov 2021 473
720 13804 3620.38 720 725 5158 29 565 0Dec 2021 363
860 13477 3617.28 860 871 5132 9 516 0Jan 2022 361
750 13237 3614.97 750 760 5113 9 501 0Feb 2022 393
800 13069 3613.33 800 814 5099 16 634 0Mar 2022 665
* Based on the Colorado River Basin Forecast Center's Most Probable Water Supply Forecast Model Run ID: 3117 Processed On: 4/10/2020 3:45:27PM
Most Probable Inflow*
April 2020 24-Month Study
Hoover Dam - Lake Mead
OPERATION PLAN FOR COLORADO RIVER SYSTEM RESERVOIRS
Reservoir Elev
End of Month
(Ft)
Bank
Storage
(1000 Ac-Ft)
SNWP
Use
(1000 Ac-Ft)
Side Inflow
Glen to Hoover
(1000 Ac-Ft)Date
Evap
Losses
(1000 Ac-Ft)
Total
Release
(1000 Ac-Ft)
Total
Release
(1000 CFS)
Glen
Release
(1000 Ac-Ft)
EOM
Storage
(1000 Ac-Ft)
Downstream
Requirements
(1000 Ac-Ft)
900 10767 1088.95 902 700 15.2 39 118 720Apr 2019* 15
988 10555 1086.48 989 686 16.1 45 108 720May 2019H 18
911 10405 1084.71 912 676 15.3 54 69 765Jun 2019I 27
946 10246 1082.82 946 666 15.4 67 20 857Jul 2019S 33
801 10299 1083.45 802 669 13.0 71 64 900Aug 2019T 34
690 10261 1083.00 696 667 11.7 59 58 687Sep 2019O 30
8868 8892 547 1087 9001WY 2019 234
621 10228 1082.61 626 665 10.2 43 34 625Oct 2019R 25
553 10333 1083.85 575 672 9.7 40 116 626Nov 2019I 13
214 10899 1090.49 220 708 3.6 37 118 750Dec 2019C 7
404 11265 1094.68 405 732 6.6 31 75 760Jan 2020A 9
550 11405 1096.27 557 741 9.7 29 67 675Feb 2020L 8
568 11610 1098.59 593 755 9.6 33 150 700Mar 2020* 6
889 11373 1095.91 889 739 14.9 41 69 630Apr 2020 22
1020 10981 1091.43 1020 714 16.6 46 49 630May 2020 30
968 10630 1087.36 968 691 16.3 55 28 650Jun 2020 30
865 10498 1085.81 865 682 14.1 68 73 750Jul 2020 30
814 10506 1085.91 814 683 13.2 72 91 835Aug 2020 31
744 10359 1084.17 744 673 12.5 59 75 599Sep 2020 26
8211 8276 554 944 8230WY 2020 236
584 10418 1084.87 584 677 9.5 43 75 640Oct 2020 25
780 10294 1083.40 780 669 13.1 43 68 640Nov 2020 17
619 10404 1084.69 619 676 10.1 37 64 720Dec 2020 12
533 10763 1088.91 533 700 8.7 31 95 860Jan 2021 9
532 11028 1091.97 532 717 9.6 28 101 750Feb 2021 9
982 10899 1090.49 982 708 16.0 32 91 800Mar 2021 14
1045 10593 1086.92 1045 689 17.6 39 69 710Apr 2021 21
1008 10289 1083.34 1008 669 16.4 45 49 710May 2021 29
962 10040 1080.35 962 653 16.2 53 28 750Jun 2021 29
842 10026 1080.18 842 652 13.7 66 73 850Jul 2021 29
800 10110 1081.19 800 657 13.0 71 91 900Aug 2021 30
728 10047 1080.44 728 653 12.2 58 75 670Sep 2021 25
9416 9416 547 878 9000WY 2021 248
536 10153 1081.70 536 660 8.7 42 75 640Oct 2021 24
654 10148 1081.65 654 660 11.0 43 68 640Nov 2021 16
491 10378 1084.39 491 675 8.0 37 64 720Dec 2021 11
519 10750 1088.76 519 699 8.4 31 95 860Jan 2022 9
518 11027 1091.96 518 717 9.3 28 101 750Feb 2022 9
968 10911 1090.63 968 709 15.7 32 91 800Mar 2022 14
* Based on the Colorado River Basin Forecast Center's Most Probable Water Supply Forecast Model Run ID: 3117 Processed On: 4/10/2020 3:45:27PM
Most Probable Inflow*
April 2020 24-Month Study
Davis Dam - Lake Mohave
OPERATION PLAN FOR COLORADO RIVER SYSTEM RESERVOIRS
Reservoir Elev
End of Month
(Ft)
EOM
Storage
(1000 Ac-Ft)
Total
Release
(1000 Ac-Ft)
Side
Inflow
(1000 Ac-Ft)Date
Evap
Losses
(1000 Ac-Ft)
Power
Release
(1000 Ac-Ft)
Spill
Release
(1000 Ac-Ft)
Hoover
Release
(1000 Ac-Ft)
Total
Release
(1000 CFS)
14.9 1686 642.52 886 0 886 17 0 902Apr 2019*
15.2 1707 643.32 937 0 937 22-9 989May 2019H
14.9 1696 642.89 886 0 886 25-12 912Jun 2019I
14.5 1712 643.48 894 0 895 25-11 946Jul 2019S
13.0 1680 642.31 800 0 800 23-11 802Aug 2019T
12.9 1573 638.35 767 0 767 18-17 696Sep 2019O
8539 0 8538 198-142 8892WY 2019
9.6 1572 638.28 589 0 589 15-24 626Oct 2019R
7.7 1675 642.13 457 0 457 11-4 575Nov 2019I
4.0 1638 640.77 247 0 247 9 0 220Dec 2019C
6.2 1653 641.32 380 0 380 10 0 405Jan 2020A
9.1 1674 642.10 523 0 523 10-2 557Feb 2020L
8.9 1708 643.32 549 0 549 13 3 593Mar 2020*
14.6 1699 643.00 868 0 868 17-12 889Apr 2020
16.1 1699 643.00 988 0 988 22-10 1020May 2020
15.6 1699 643.00 927 0 927 25-15 968Jun 2020
13.9 1671 642.00 855 0 855 25-12 865Jul 2020
12.7 1671 642.00 779 0 779 23-12 814Aug 2020
12.9 1618 640.01 765 0 765 18-15 744Sep 2020
7930 0 7930 198-103 8276WY 2020
12.1 1434 633.00 742 0 742 15-10 584Oct 2020
11.8 1486 635.00 700 0 700 10-19 780Nov 2020
7.8 1604 639.51 479 0 479 9-12 619Dec 2020
7.2 1666 641.80 440 0 440 10-21 533Jan 2021
9.2 1666 641.80 512 0 512 10-10 532Feb 2021
15.0 1700 643.05 923 0 923 13-12 982Mar 2021
17.1 1699 643.00 1017 0 1017 17-12 1045Apr 2021
15.9 1699 643.00 976 0 976 22-10 1008May 2021
15.5 1699 643.00 922 0 922 25-15 962Jun 2021
13.5 1671 642.00 832 0 832 25-12 842Jul 2021
12.4 1671 642.00 766 0 766 23-12 800Aug 2021
12.6 1618 640.01 749 0 749 18-15 728Sep 2021
9059 0 9059 197-159 9416WY 2021
11.3 1434 633.00 694 0 694 15-10 536Oct 2021
9.6 1486 635.00 574 0 574 10-19 654Nov 2021
5.7 1604 639.51 352 0 352 9-12 491Dec 2021
6.9 1666 641.80 427 0 427 10-21 519Jan 2022
9.0 1666 641.80 498 0 498 10-10 518Feb 2022
14.8 1700 643.05 909 0 909 13-12 968Mar 2022
* Based on the Colorado River Basin Forecast Center's Most Probable Water Supply Forecast Model Run ID: 3117 Processed On: 4/10/2020 3:45:27PM
Most Probable Inflow*
April 2020 24-Month Study
Parker Dam - Lake Havasu
OPERATION PLAN FOR COLORADO RIVER SYSTEM RESERVOIRS
Reservoir Elev
End of Month
(Ft)
EOM
Storage
(1000 Ac-Ft)
Total
Release
(1000 Ac-Ft)
Evap
Losses
(1000 Ac-Ft)Date
CAP
Diversion
(1000 Ac-Ft)
MWD
Diversion
(1000 Ac-Ft)
Flow To
Mexico
(1000 CFS)
Davis
Release
(1000 Ac-Ft)
Flow To
Mexico
(1000 Ac-Ft)
Total
Release
(1000 CFS)
Side
Inflow
(1000 Ac-Ft)
12.0 170 447.29 712 2.9 567 144 11 28Apr 2019* 886 6
11.3 128 448.62 693 2.1 592 154 13 51May 2019H 937 8
12.0 138 448.47 717 2.3 589 104 15 53Jun 2019I 886 11
12.0 146 448.12 739 2.4 582 92 17 59Jul 2019S 894 15
10.3 111 447.22 636 1.8 565 102 17 67Aug 2019T 800 15
8.6 103 449.03 514 1.7 600 160 15 61Sep 2019O 767 26
1515 6231 1571 140 690WY 2019 8539 173
7.0 68 447.77 430 1.1 576 151 12 30Oct 2019R 589 18
5.0 118 449.10 300 2.0 601 125 9 16Nov 2019I 457 22
2.6 109 448.16 159 1.8 583 72 7 46Dec 2019C 247 18
5.1 106 446.50 311 1.7 552 75 6 17Jan 2020A 380 1
6.9 138 448.15 400 2.4 583 75 8 3Feb 2020L 523 -3
7.4 198 446.04 455 3.2 543 94 9 43Mar 2020* 549 16
10.2 152 448.00 607 2.5 580 159 11 53Apr 2020 868 8
11.3 124 448.50 696 2.0 589 174 13 99May 2020 988 15
12.0 139 448.70 713 2.3 593 97 16 96Jun 2020 927 11
11.5 151 448.00 706 2.5 580 52 17 99Jul 2020 855 18
10.2 114 447.50 626 1.9 571 52 17 99Aug 2020 779 17
8.9 110 447.50 530 1.9 570 131 15 96Sep 2020 765 17
1525 5933 1257 140 697WY 2020 7930 158
7.5 69 447.50 459 1.1 571 190 12 99Oct 2020 742 24
7.0 88 447.50 414 1.5 571 192 9 97Nov 2020 700 16
4.6 93 446.50 284 1.5 552 126 7 100Dec 2020 479 22
4.1 102 446.50 255 1.7 552 91 6 104Jan 2021 440 20
7.1 127 446.50 392 2.3 552 84 8 31Feb 2021 512 10
10.4 167 446.70 637 2.7 555 170 9 100Mar 2021 923 5
11.9 152 448.70 706 2.6 593 163 11 97Apr 2021 1017 8
11.5 127 448.70 705 2.1 593 172 13 88May 2021 976 15
12.1 141 448.70 718 2.4 593 100 16 86Jun 2021 922 11
11.3 152 448.00 693 2.5 580 52 17 89Jul 2021 832 18
10.1 117 447.50 623 1.9 571 52 17 89Aug 2021 766 17
8.9 113 447.50 530 1.9 570 140 15 70Sep 2021 749 17
1450 6417 1531 139 1049WY 2021 9059 183
7.6 73 447.50 470 1.2 571 173 12 57Oct 2021 694 24
6.0 91 447.50 355 1.5 571 166 9 55Nov 2021 574 16
3.8 96 446.50 236 1.6 552 88 7 56Dec 2021 352 22
4.1 102 446.50 255 1.7 552 91 6 90Jan 2022 427 20
7.1 127 446.50 393 2.3 552 84 8 17Feb 2022 498 10
10.4 167 446.70 637 2.7 555 170 9 85Mar 2022 909 5
* Based on the Colorado River Basin Forecast Center's Most Probable Water Supply Forecast Model Run ID: 3117 Processed On: 4/10/2020 3:45:27PM
Most Probable Inflow*
April 2020 24-Month Study
Hoover Dam - Lake Mead
OPERATION PLAN FOR COLORADO RIVER SYSTEM RESERVOIRS
Reservoir Elev
End of Month
(Ft)
Hoover
Gross Energy
MKWH
Hoover
Static Head
(Ft)
Power
Release
(1000 CFS)Date
Percent of
Units
Available KWH/AF
Change In
Storage
(1000 Ac-Ft)
Power
Release
(1000 Ac-Ft)
EOM
Storage
(1000 Ac-Ft)
Hoover Gen
Capacity
MW
810.1 10767 1088.95 405.2 365.4-111 51 15.2 902Apr 2019* 439.99
803.9 10555 1086.48 402.5 398.2-211 51 16.1 989May 2019H 440.79
1591.0 10405 1084.71 393.7 359.0-150 100 15.3 912Jun 2019I 439.38
1486.0 10246 1082.82 392.7 371.7-159 93 15.4 946Jul 2019S 435.56
1297.0 10299 1083.45 390.9 313.5 53 81 13.0 802Aug 2019T 439.02
1494.1 10261 1083.00 384.4 267.4-38 93 11.7 696Sep 2019O 439.88
3494.1 8877WY 2019
1198.0 10228 1082.61 386.2 241.9-33 74 10.2 626Oct 2019R 439.17
1192.0 10333 1083.85 386.0 221.9 104 75 9.7 575Nov 2019I 438.74
838.0 10899 1090.49 371.4 81.6 567 52 3.6 220Dec 2019C 448.42
1152.1 11265 1094.68 395.1 160.0 366 70 6.6 405Jan 2020A 451.06
962.0 11405 1096.27 402.6 224.2 140 57 9.7 557Feb 2020L 452.31
1136.0 11610 1098.59 399.6 237.0 205 69 9.6 593Mar 2020* 450.96
1138.0 11373 1095.91 409.4 363.8-237 69 14.9 889Apr 2020 446.84
1118.0 10981 1091.43 406.5 414.7-392 69 16.6 1020May 2020 443.38
1493.9 10630 1087.36 391.3 378.6-351 94 16.3 968Jun 2020 436.49
1480.0 10498 1085.81 397.5 344.0-132 94 14.1 865Jul 2020 434.03
1576.0 10506 1085.91 393.4 320.1 8 100 13.2 814Aug 2020 432.98
1576.0 10359 1084.17 390.9 291.0-147 100 12.5 744Sep 2020 432.81
3279.0 8276WY 2020
1174.0 10418 1084.87 391.3 228.5 59 74 9.5 584Oct 2020 437.33
1369.1 10294 1083.40 399.0 311.4-124 87 13.1 780Nov 2020 437.90
1389.0 10404 1084.69 391.0 242.1 109 87 10.1 619Dec 2020 435.69
1314.1 10763 1088.91 385.3 205.3 359 80 8.7 533Jan 2021 436.89
1111.0 11028 1091.97 396.1 210.8 265 67 9.6 532Feb 2021 441.18
1197.9 10899 1090.49 406.4 399.1-128 73 16.0 982Mar 2021 440.93
1180.0 10593 1086.92 403.4 421.6-306 73 17.6 1045Apr 2021 438.01
1395.0 10289 1083.34 390.2 393.5-303 88 16.4 1008May 2021 432.92
1576.0 10040 1080.35 382.6 368.1-250 100 16.2 962Jun 2021 428.35
1576.0 10026 1080.18 389.6 328.1-14 100 13.7 842Jul 2021 427.11
1576.0 10110 1081.19 388.3 310.8 84 100 13.0 800Aug 2021 427.85
1566.2 10047 1080.44 386.4 281.3-63 100 12.2 728Sep 2021 428.63
3700.5 9416WY 2021
1172.0 10153 1081.70 384.2 205.9 105 74 8.7 536Oct 2021 433.90
1366.5 10148 1081.65 388.7 254.3-4 87 11.0 654Nov 2021 435.46
1379.1 10378 1084.39 392.0 192.7 230 87 8.0 491Dec 2021 434.68
1298.2 10750 1088.76 396.2 205.8 372 80 8.4 519Jan 2022 436.66
1097.8 11027 1091.96 394.7 204.6 277 67 9.3 518Feb 2022 441.11
1186.9 10911 1090.63 405.8 392.9-116 73 15.7 968Mar 2022 441.00
* Based on the Colorado River Basin Forecast Center's Most Probable Water Supply Forecast Model Run ID: 3117 Processed On: 4/10/2020 3:45:27PM
Most Probable Inflow*
April 2020 24-Month Study
Davis Dam - Lake Mohave
OPERATION PLAN FOR COLORADO RIVER SYSTEM RESERVOIRS
Reservoir Elev
End of Month
(Ft)
Davis
Gross Energy
MKWH
Davis
Static Head
(Ft)
Power
Release
(1000 CFS)Date
Percent of
Units
Available KWH/AF
Change In
Storage
(1000 Ac-Ft)
Power
Release
(1000 Ac-Ft)
EOM
Storage
(1000 Ac-Ft)
Davis Gen
Capacity
MW
210.8 1686 126.3 111.9-1 83 14.9 886Apr 2019* 142.03 642.52
238.6 1707 127.6 119.5 22 94 15.2 937May 2019H 139.79 643.32
255.0 1696 128.3 113.6-12 100 14.9 886Jun 2019I 140.50 642.89
255.0 1712 126.5 113.2 16 100 14.5 895Jul 2019S 142.50 643.48
255.0 1680 127.3 101.8-32 100 13.0 800Aug 2019T 139.60 642.31
255.0 1573 125.1 96.0-107 100 12.9 767Sep 2019O 137.20 638.35
1079.9 8538WY 2019
243.5 1572 124.4 73.2-2 95 9.6 589Oct 2019R 138.85 638.28
153.0 1675 121.7 55.6 103 60 7.7 457Nov 2019I 143.18 642.13
156.3 1638 123.7 30.5-37 61 4.0 247Dec 2019C 141.96 640.77
156.3 1653 131.3 49.9 15 61 6.2 380Jan 2020A 141.95 641.32
156.5 1674 131.6 68.9 21 61 9.1 523Feb 2020L 139.59 642.10
164.5 1708 122.6 67.4 33 65 8.9 549Mar 2020* 142.51 643.32
253.3 1699 125.7 109.2-9 99 14.6 868Apr 2020 139.55 643.00
255.0 1699 125.1 123.6 0 100 16.1 988May 2020 138.88 643.00
255.0 1699 125.3 116.2 0 100 15.6 927Jun 2020 139.05 643.00
255.0 1671 125.3 107.2-27 100 13.9 855Jul 2020 139.13 642.00
255.0 1671 125.3 97.6 0 100 12.7 779Aug 2020 139.09 642.00
255.0 1618 124.4 95.2-54 100 12.9 765Sep 2020 138.03 640.01
994.6 7930WY 2020
227.0 1434 120.6 89.5-183 89 12.1 742Oct 2020 133.83 633.00
159.8 1486 118.4 82.9 51 63 11.8 700Nov 2020 131.44 635.00
154.7 1604 122.8 58.9 118 61 7.8 479Dec 2020 136.34 639.51
156.3 1666 126.2 55.6 62 61 7.2 440Jan 2021 140.03 641.80
156.6 1666 126.4 64.7 0 61 9.2 512Feb 2021 140.27 641.80
194.1 1700 124.9 115.3 34 76 15.0 923Mar 2021 138.67 643.05
249.9 1699 124.8 127.0-1 98 17.1 1017Apr 2021 138.57 643.00
255.0 1699 125.2 122.2 0 100 15.9 976May 2021 138.95 643.00
255.0 1699 125.3 115.5 0 100 15.5 922Jun 2021 139.08 643.00
255.0 1671 125.5 104.4-27 100 13.5 832Jul 2021 139.28 642.00
255.0 1671 125.4 96.0 0 100 12.4 766Aug 2021 139.18 642.00
255.0 1618 124.4 93.2-54 100 12.6 749Sep 2021 138.13 640.01
1125.2 9059WY 2021
227.0 1434 120.8 83.9-183 89 11.3 694Oct 2021 134.13 633.00
159.8 1486 119.2 68.4 51 63 9.6 574Nov 2021 132.29 635.00
154.7 1604 123.7 43.5 118 61 5.7 352Dec 2021 137.30 639.51
156.3 1666 126.2 53.9 62 61 6.9 427Jan 2022 140.13 641.80
156.6 1666 126.5 63.0 0 61 9.0 498Feb 2022 140.38 641.80
194.1 1700 125.0 113.7 34 76 14.8 909Mar 2022 138.75 643.05
* Based on the Colorado River Basin Forecast Center's Most Probable Water Supply Forecast Model Run ID: 3117 Processed On: 4/10/2020 3:45:27PM
Most Probable Inflow*
April 2020 24-Month Study
Parker Dam - Lake Havasu
OPERATION PLAN FOR COLORADO RIVER SYSTEM RESERVOIRS
Reservoir Elev
End of Month
(Ft)
Parker
Gross Energy
MKWH
Parker
Static Head
(Ft)
Power
Release
(1000 CFS)Date
Percent of
Units
Available KWH/AF
Change In
Storage
(1000 Ac-Ft)
Power
Release
(1000 Ac-Ft)
EOM
Storage
(1000 Ac-Ft)
Parker Gen
Capacity
MW
115.0 567 447.29 69.5 49.5-11 96 12.0 712Apr 2019* 79.40
119.0 592 448.62 72.2 48.6 25 99 11.3 673May 2019H 80.51
120.0 589 448.47 70.2 50.3-3 100 12.0 717Jun 2019I 80.43
120.0 582 448.12 69.5 51.4-7 100 12.0 739Jul 2019S 80.11
120.0 565 447.22 69.7 44.3-17 100 10.3 636Aug 2019T 77.13
120.0 600 449.03 69.8 35.9 34 100 8.6 514Sep 2019O 83.07
433.7 6211WY 2019
90.0 576 447.77 70.1 30.2-24 75 7.0 430Oct 2019R 83.21
92.0 601 449.10 67.2 20.2 25 77 5.0 300Nov 2019I 84.29
100.6 583 448.16 59.3 9.4-18 84 2.6 159Dec 2019C 81.68
97.7 552 446.50 70.7 22.0-31 81 5.1 311Jan 2020A 80.47
97.2 583 448.15 70.0 28.0 31 81 6.9 400Feb 2020L 82.44
120.0 543 446.04 65.9 30.0-39 100 7.4 455Mar 2020* 78.08
120.0 580 448.00 65.0 39.5 37 100 10.2 607Apr 2020 74.42
120.0 589 448.50 66.1 46.0 9 100 11.3 696May 2020 75.61
120.0 593 448.70 66.5 47.4 4 100 12.0 713Jun 2020 75.95
120.0 580 448.00 66.2 46.8-13 100 11.5 706Jul 2020 75.71
120.0 571 447.50 65.6 41.1-9 100 10.2 626Aug 2020 75.13
120.0 570 447.50 65.1 34.5 0 100 8.9 530Sep 2020 74.89
394.9 5933WY 2020
90.0 571 447.50 65.9 30.2 0 75 7.5 459Oct 2020 76.29
92.0 571 447.50 65.6 27.1 0 77 7.0 414Nov 2020 76.19
109.4 552 446.50 62.9 17.8-19 91 4.6 284Dec 2020 74.86
94.8 552 446.50 62.6 16.0 0 79 4.1 255Jan 2021 75.07
92.1 552 446.50 64.9 25.5 0 77 7.1 392Feb 2021 75.21
120.0 555 446.70 64.7 41.2 4 100 10.4 637Mar 2021 74.01
120.0 593 448.70 65.8 46.5 38 100 11.9 706Apr 2021 75.08
120.0 593 448.70 66.5 46.9 0 100 11.5 705May 2021 76.05
120.0 593 448.70 66.6 47.8 0 100 12.1 718Jun 2021 76.05
120.0 580 448.00 66.2 45.9-13 100 11.3 693Jul 2021 75.71
120.0 571 447.50 65.5 40.9-9 100 10.1 623Aug 2021 75.13
120.0 570 447.50 65.1 34.5 0 100 8.9 530Sep 2021 74.89
420.3 6417WY 2021
92.9 571 447.50 65.8 30.9 0 77 7.6 470Oct 2021 76.14
92.0 571 447.50 65.0 23.1 0 77 6.0 355Nov 2021 76.19
110.3 552 446.50 61.9 14.6-19 92 3.8 236Dec 2021 74.82
93.9 552 446.50 62.6 16.0 0 78 4.1 255Jan 2022 75.12
93.2 552 446.50 64.9 25.5 0 78 7.1 393Feb 2022 75.15
120.0 555 446.70 64.7 41.2 4 100 10.4 637Mar 2022 74.01
* Based on the Colorado River Basin Forecast Center's Most Probable Water Supply Forecast Model Run ID: 3117 Processed On: 4/10/2020 3:45:27PM
Most Probable Inflow*
April 2020 24-Month Study
Upper Basin Power
OPERATION PLAN FOR COLORADO RIVER SYSTEM RESERVOIRS
Fontenelle
Reservoir
1000 MWHR
Crystal
Reservoir
1000 MWHR
Glen
Canyon
1000 MWHRDate
Flaming
Gorge
1000 MWHR
Blue
Mesa
1000 MWHR
Morrow
Point
1000 MWHR
294 10 4 27 9 14Apr 2019*
299 21 6 38 23 45May 2019H
332 22 8 82 33 64Jun 2019I
391 23 7 39 28 54Jul 2019S
412 22 7 42 24 49Aug 2019T
312 18 2 44 15 22Sep 2019O
2041 115 34 273 131 248Summer 2019
281 18 5 31 26 27Oct 2019R
280 14 5 31 22 25Nov 2019I
336 17 5 51 26 30Dec 2019C
338 11 5 51 18 22Jan 2020A
296 4 4 47 12 14Feb 2020L
307 7 4 46 11 13Mar 2020*
1838 71 28 258 115 131Winter 2020
263 13 5 42 18 23Apr 2020
265 23 6 22 53 72May 2020
279 15 9 81 13 21Jun 2020
326 16 10 26 25 31Jul 2020
362 15 7 32 20 28Aug 2020
258 14 2 35 22 27Sep 2020
1755 96 38 239 151 203Summer 2020
275 12 6 27 19 23Oct 2020
274 4 6 36 4 6Nov 2020
307 8 6 54 12 16Dec 2020
365 8 5 54 12 16Jan 2021
316 9 4 49 13 16Feb 2021
335 9 5 21 0 17Mar 2021
1872 50 31 240 61 95Winter 2021
297 13 5 21 0 23Apr 2021
301 15 7 30 2 20May 2021
327 22 9 78 56 71Jun 2021
376 20 10 26 31 38Jul 2021
397 20 9 32 34 40Aug 2021
294 9 2 31 30 35Sep 2021
1994 100 41 216 154 226Summer 2021
280 16 6 26 26 30Oct 2021
279 11 6 38 17 21Nov 2021
313 19 6 57 31 38Dec 2021
372 11 5 56 17 21Jan 2022
324 8 4 51 11 14Feb 2022
344 9 5 40 13 17Mar 2022
1568 64 27 227 102 125Winter 2022
* Based on the Colorado River Basin Forecast Center's Most Probable Water Supply Forecast Model Run ID: 3117 Processed On: 4/10/2020 3:45:27PM
Most Probable Inflow*
April 2020 24-Month Study
Flood Control Criteria - Beginning of Month Conditions
OPERATION PLAN FOR COLORADO RIVER SYSTEM RESERVOIRS
Navajo
KAFDate
Flaming
Gorge
KAF
Blue
Mesa
KAF
Lake
Powell
KAF
Upper Basin
Total
KAF
Lake
Mead
KAF
Total
KAF
Flaming
Gorge
KAF
Blue
Mesa
KAF
Navajo
KAF
Lake
Powell
KAF
Tot or Max
Allow
KAF
Lake
Mead
KAF
Total
KAF
BOM Space
Required
KAF
Mead
Sched Rel
KAF
Mead
FC Rel
KAF
Sys
Cont
MAF
* * * * P R E D I C T E D S P A C E * * * * * * * * E F F E C T I V E S P A C E * * * *
737 295 404 12504 13940 15767 29707 410 153 264 826 12504 15767 29097 1500 889 0 30.9Apr 2020
719 303 386 12479 13887 16004 29891 386 160 222 768 12479 16004 29251 1500 1020 0 31.4May 2020
583 337 314 11766 13000 16396 29396 237 184 110 531 11766 16396 28693 1500 968 0 32.7Jun 2020
459 165 275 10534 11434 16747 28181 99 -2 15 112 10534 16747 27393 1500 865 0 32.5Jul 2020
* * * * C R E D I T A B L E S P A C E * * * *
379 162 322 10554 11417 16879 28296 379 162 322 863 10554 16879 28296 1500 814 0 32.0Aug 2020
409 183 355 10918 11865 16871 28736 409 183 355 947 10918 16871 28736 2270 744 0 31.5Sep 2020
466 211 363 11095 12134 17018 29152 466 211 363 1040 11095 17018 29152 3040 584 0 31.2Oct 2020
491 237 359 11248 12336 16959 29295 491 237 359 1088 11248 16959 29295 3810 780 0 30.9Nov 2020
542 222 363 11426 12553 17083 29636 542 222 363 1127 11426 17083 29636 4580 619 0 30.8Dec 2020
655 238 365 11665 12922 16973 29896 655 238 365 1257 11665 16973 29896 5350 533 0 30.7Jan 2021
* * * * E F F E C T I V E S P A C E * * * *
655 238 365 11665 12922 16973 29896 407 238 145 790 11665 16973 29429 5350 533 0 30.7Jan 2021
761 255 369 12019 13404 16614 30018 514 255 148 918 12019 16614 29551 1500 532 0 30.6Feb 2021
850 276 363 12264 13754 16349 30103 603 276 142 1021 12264 16349 29634 1500 982 0 30.4Mar 2021
812 284 324 12479 13899 16478 30377 559 284 95 939 12479 16478 29896 1500 1045 0 30.4Apr 2021
743 259 250 12365 13617 16784 30402 482 259 -3 739 12365 16784 29888 1500 1008 0 31.6May 2021
591 83 247 11234 12154 17088 29241 318 83 -47 354 11234 17088 28675 1500 962 0 33.0Jun 2021
428 25 381 9624 10458 17337 27795 140 18 31 188 9624 17337 27149 1500 842 0 33.1Jul 2021
* * * * C R E D I T A B L E S P A C E * * * *
308 5 412 9567 10293 17351 27644 308 5 412 726 9567 17351 27644 1500 800 0 32.8Aug 2021
322 43 433 9921 10719 17267 27986 322 43 433 798 9921 17267 27986 2270 728 0 32.4Sep 2021
363 91 438 10122 11014 17330 28344 363 91 438 892 10122 17330 28344 3040 536 0 32.1Oct 2021
381 131 433 10229 11175 17224 28400 381 131 433 946 10229 17224 28400 3810 654 0 32.0Nov 2021
436 158 437 10349 11380 17229 28608 436 158 437 1031 10349 17229 28608 4580 491 0 31.9Dec 2021
554 236 448 10518 11756 16999 28755 554 236 448 1238 10518 16999 28755 5350 519 0 31.9Jan 2022
* * * * E F F E C T I V E S P A C E * * * *
554 236 448 10518 11756 16999 28755 279 236 236 750 10518 16999 28267 5350 519 0 31.9Jan 2022
667 268 461 10845 12241 16627 28868 392 268 248 908 10845 16627 28380 1500 518 0 31.8Feb 2022
762 283 462 11085 12591 16350 28941 486 283 249 1018 11085 16350 28452 1500 968 0 31.6Mar 2022
* Based on the Colorado River Basin Forecast Center's Most Probable Water Supply Forecast Model Run ID: 3117 Processed On: 4/10/2020 3:45:27PM
