Subject: November 2023 Most Probable 24-Month Study

The operation of Lake Powell and Lake Mead in the November 2023 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 2023 Annual

Operating Plan (AOP). Pursuant to the Interim Guidelines, the August 2022 24-Month Study projections of the January 1, 2023, system storage and reservoir

water surface elevations set the operational tier for the coordinated operation of Lake Powell and Lake Mead during 2023. 

Consistent with Section 2.D.1 of the Interim Guidelines, a Shortage Condition consistent with Section 2.D.1.b is governing the operation of Lake Mead for calendar

year (CY) 2023. In addition, Section III.B of Exhibit 1 to the Lower Basin Drought Contingency Plan (DCP) Agreement will govern the operation of Lake Mead for

CY 2023. Efforts to conserve additional water in Lake Mead under a 2021 Lower Basin Memorandum of Understanding (MOU) to facilitate near-term actions to

maintain the water surface elevation of Lake Mead and additional conservation efforts under the Lower Colorado River Basin System Conservation and Efficiency

Program (LC Conservation Program) will also take place in CY 2023.

The August 2023 24-Month study projected the January 1, 2024, Lake Powell elevation to be less than 3,575 feet and at or above 3,525 feet and the Lake Mead 

elevation to be at or above 1,025 feet. Consistent with Section 6.C.1 of the Interim Guidelines the operational tier for Lake Powell in water year (WY) 2024 will be

the Mid-Elevation Release Tier and the water year release volume from Lake Powell will be 7.48 million acre-feet (maf). 

The 2022 Drought Response Operations Agreement (DROA) Plan1 for May 2022 through April 2023 was amended to suspend 2022 DROA Plan releases as of 

March 7, 2023. A total DROA release of approximately 463 thousand acre-feet (kaf) occurred under the 2022 DROA Plan. Reclamation will attempt to maximize

DROA recovery in the Upper Initial Units in WY 2023 and through April 2024. Reclamation will provide monthly DROA accounting, including DROA releases and

recovery, which can be found online at: https://www.usbr.gov/dcp/DROSummarySheet.pdf. 

In May of 2023, the DROA Parties agreed to the 2023 DROA Plan. The 2023 DROA Plan does not include any DROA releases, but rather provides for recovery of

prior DROA releases from the units upstream of Powell.

Reclamation will continue to carefully monitor hydrologic and operational conditions and assess the need for additional responsive actions and/or changes to

operations. Reclamation will continue to consult with the Basin States, Basin Tribes, Mexico, and other partners on Colorado River operations to consider and

determine whether additional measures should be taken to further enhance the preservation of these benefits, as well as recovery protocols, including those of

future protective measures for both Lakes Powell and Mead. 

1 For more information: https://www.usbr.gov/uc/DocLibrary/Plans/20220429-2022DroughtResponseOperationsPlan-ApprovalMemo-508-DOI.pdf. 

To: All Annual Operating Plan Recipients

From: Noe Santos, P.E.

River Operations Manager

Boulder Canyon Operations Office

Interior Region 8: Lower Colorado Basin

 Email: nsantos@usbr.gov 

 

From: Alex Pivarnik

Supervisor, River Operations Group

Upper Colorado Operations Office

Interior Region 7: Upper Colorado Basin

 Email: apivarnik@usbr.gov 
The August 2023 24-Month Study projected the January 1, 2024 Lake Mead elevation to be below 1,075 feet and above 1,050 feet. Consistent with Section 2.D.1

of the Interim Guidelines, a Shortage Condition consistent with Section 2.D.1.a will govern the operation of Lake Mead for CY 2024. In addition, Section III.B of

Exhibit 1 to the Lower Basin DCP Agreement will also govern the operation of Lake Mead for CY 2024. Lower Basin projections for Lake Mead take into

consideration updated water orders to reflect additional conservation efforts under the LC Conservation Program.

The 2024 operational tier determinations for Lake Powell and Lake Mead will be documented in the 2024 AOP, which is currently in development.

Current runoff projections into Lake Powell are provided by the National Weather Service’s Colorado Basin River Forecast Center. The observed unregulated

inflow into Lake Powell for the month of October was 0.323 maf or 71% of the 30-year average from 1991 to 2020. The November 2023 unregulated inflow

forecast for Lake Powell is 0.360 maf or 86% of the 30-year average. The observed 2023 April through July unregulated inflow is 10.62 maf or 166% of average.

The observed WY 2023 unregulated inflow is 13.42 maf or 140% of average.

In this study, the CY 2023 diversion for Metropolitan Water District of Southern California (MWD) is projected to be 0.687 maf. The CY 2023 diversion for the

Central Arizona Project (CAP) is projected to be 0.842 maf. Consumptive use for Nevada above Hoover (SNWP Use) is projected to be 0.186 maf for CY 2023.

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 Dam historical gross energy figures come from Power, Operations, and Maintenance 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 Rebecca Rogers at (702)

293-8091.
Runoff and inflow projections into upper basin reservoirs are provided by the National Weather Service’s Colorado Basin River Forecast Center and are as follows:

Reservoir Observed Inflow (kaf) Oct Inflow Forecast (kaf) Observed

Jul Aug Sep Oct %Avg Nov Dec Jan Apr-Jul %Avg

Lake Powell 1054 307 224 323 71% 360 320 340 10619 166%

Fontenelle 141 74 50 53 118% 45 35 32 951 129%

Flaming Gorge 174 95 67 69 130% 56 39 45 1457 151%

Blue Mesa 117 49 26 30 83% 28 25 23 833 131%

Morrow Point 121 49 27 31 81% 29 26 25 901 131%

Crystal 128 52 29 32 75% 31 29 29 988 128%

Taylor Park 22 8.8 5.5 5.8 89% 4.3 4.4 4.2 118 126%

Vallecito 22 10.6 8.7 6.3 45% 4.4 4.3 4 252 142%

Navajo 46 -3.53 0.86 12.3 32% 17 17 18 1028 163%

Lemon 4.9 2 1.77 0.94 33% 0.7 0.6 0.6 67 140%

McPhee 23 10 8.3 3.1 37% 2.8 2.8 3.2 527 207%

Ridgway 28 11.2 5.8 5.2 70% 4.6 4 3.5 110 120%

Deerlodge 76 19 8.2 21 72% 26 24 25 2002 168%

Durango 75 23 15 12.7 50% 11 11 11 532 138%

The draft 2024 AOP is available online at:

https://www.usbr.gov/lc/region/g4000/AOP2024/AOP24_draft.pdf

The 2023 AOP is available online at:

https://www.usbr.gov/uc/water/rsvrs/ops/aop/AOP23.pdf. 

The Interim Guidelines are available online at:

https://www.usbr.gov/lc/region/programs/strategies/RecordofDecision.pdf. 

The Colorado River DCPs are available online at:

https://www.usbr.gov/dcp/finaldocs.html. 

The 2021 Lower Basin MOU is available online at: 

https://www.usbr.gov/lc/region/g4000/2021_MOU.pdf. 

The Upper Basin DROA is online at:

https://www.usbr.gov/dcp/droa.html. 

The Upper Basin Hydrology Summary is available online at:

https://www.usbr.gov/uc/water/crsp/studies/24Month_11_ucb.pdf. 

Information on the LC Conservation Program is available online at: 

https://www.usbr.gov/lc/LCBConservation.html. 
Most Probable Inflow*

November 2023 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

Date (1000 Ac-Ft)

Evap

Losses

(1000 Ac-Ft)

Power

Release

(1000 Ac-Ft)

Bypass

Release

(1000 Ac-Ft)

* Nov 2022 34 1 10 48 58 6490.90 224

H Dec 2022 29 1 56 2 58 6486.14 194

I Jan 2023 32 1 58 0 59 6481.53 167

S Feb 2023 28 0 10 43 53 6476.59 141

T Mar 2023 30 0 55 3 58 6470.02 113

O Apr 2023 75 1 61 0 61 6473.29 126

R May 2023 323 1 102 95 198 6494.66 250

I Jun 2023 413 2 92 269 361 6501.41 299

C Jul 2023 141 3 86 41 127 6502.91 310

A Aug 2023 74 2 71 3 74 6502.60 308

L Sep 2023 50 2 70 1 71 6499.60 285

WY 2023 1265 15 693 545 1238

* Oct 2023 53 1 65 3 68 6497.41 269

Nov 2023 45 1 67 0 67 6494.27 247

Dec 2023 35 1 69 0 69 6489.09 212

Jan 2024 32 1 69 0 69 6482.91 175

Feb 2024 30 1 65 0 65 6476.15 139

Mar 2024 48 0 67 0 67 6471.74 120

Apr 2024 70 1 35 20 55 6475.12 135

May 2024 140 1 98 0 98 6483.00 175

Jun 2024 285 2 103 74 177 6499.05 281

Jul 2024 160 3 102 13 115 6504.74 324

Aug 2024 60 2 92 0 92 6500.27 290

Sep 2024 40 2 70 0 70 6495.87 258

WY 2024 998 15 901 109 1010

Oct 2024 45 1 0 55 55 6494.23 247

Nov 2024 42 1 0 61 61 6491.33 227

Dec 2024 32 1 20 48 68 6485.68 191

Jan 2025 31 1 68 0 68 6479.06 154

Feb 2025 29 0 61 0 61 6472.07 121

Mar 2025 51 0 55 0 55 6471.12 117

Apr 2025 77 1 38 10 48 6477.44 145

May 2025 166 1 92 0 92 6489.93 218

Jun 2025 301 2 105 122 227 6500.14 289

Jul 2025 146 3 101 12 114 6504.09 319

Aug 2025 59 2 77 0 77 6501.49 299

Sep 2025 39 2 65 0 65 6497.65 271

WY 2025 1018 15 682 309 990

Oct 2025 45 1 68 0 68 6494.29 247

* Based on the Colorado River Basin Forecast Center's Most Probable Water Supply Forecast Model Run ID: 3239 Processed On: 11/7/2023 10:23:09AM 
Most Probable Inflow*

November 2023 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

Date (1000 Ac-Ft)

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)

* Nov 2022 40 63 3 102 0 102 98 6010.19 2590 132

H Dec 2022 26 57 2 107 0 107 96 6008.59 2540 135

I Jan 2023 38 65 2 108 0 108 95 6007.19 2497 143

S Feb 2023 33 58 2 98 0 98 93 6005.89 2457 134

T Mar 2023 49 77 3 61 5 66 93 6006.15 2465 119

O Apr 2023 188 181 4 48 0 48 98 6010.17 2589 403

R May 2023 521 397 7 49 0 49 111 6020.21 2917 1044

I Jun 2023 574 512 10 114 42 157 125 6029.59 3249 672

C Jul 2023 174 166 13 75 1 76 128 6031.49 3323 173

A Aug 2023 95 93 13 112 0 112 126 6030.69 3292 152

L Sep 2023 67 88 11 114 0 114 125 6029.77 3256 142

WY 2023 1847 1821 74 1099 48 1147 3391

* Oct 2023 69 84 7 100 0 100 124 6029.17 3233 137

Nov 2023 56 78 3 89 0 89 124 6028.79 3219 115

Dec 2023 39 73 2 131 0 131 121 6027.21 3161 155

Jan 2024 45 82 2 131 0 131 119 6025.83 3112 156

Feb 2024 49 84 2 123 0 123 118 6024.71 3073 148

Mar 2024 100 119 3 65 0 65 120 6026.12 3122 130

Apr 2024 115 100 5 62 0 62 121 6027.00 3154 257

May 2024 200 158 7 176 0 176 120 6026.31 3129 671

Jun 2024 360 252 10 141 0 141 124 6028.98 3226 511

Jul 2024 180 135 14 76 0 76 126 6030.11 3269 136

Aug 2024 70 102 13 106 0 106 125 6029.69 3253 122

Sep 2024 46 76 11 104 0 104 123 6028.71 3216 120

WY 2024 1329 1341 78 1305 0 1305 2658

Oct 2024 52 62 7 72 0 72 123 6028.27 3200 98

Nov 2024 51 70 3 70 0 70 123 6028.20 3197 102

Dec 2024 34 70 2 107 0 107 121 6027.15 3159 132

Jan 2025 42 79 2 107 0 107 120 6026.34 3130 132

Feb 2025 43 75 2 97 0 97 119 6025.70 3108 122

Mar 2025 85 89 3 58 0 58 120 6026.43 3134 132

Apr 2025 111 82 5 57 0 57 121 6027.00 3154 260

May 2025 239 165 7 201 0 201 119 6025.85 3113 714

Jun 2025 389 315 10 96 0 96 127 6031.25 3314 463

Jul 2025 161 129 14 76 0 76 129 6032.20 3351 136

Aug 2025 66 84 13 106 0 106 127 6031.33 3317 125

Sep 2025 43 69 11 104 0 104 126 6030.19 3273 117

WY 2025 1316 1288 79 1150 0 1150 2532

Oct 2025 52 75 7 108 0 108 124 6029.18 3234 134

* Based on the Colorado River Basin Forecast Center's Most Probable Water Supply Forecast Model Run ID: 3239 Processed On: 11/7/2023 10:23:09AM 
Most Probable Inflow*

November 2023 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

Date (1000 Ac-Ft)

* Nov 2022 4 5 9308.13 67

H Dec 2022 5 5 9307.68 66

I Jan 2023 4 5 9307.08 65

S Feb 2023 4 5 9306.26 64

T Mar 2023 4 5 9305.50 63

O Apr 2023 7 9 9304.30 61

R May 2023 39 20 9316.35 80

I Jun 2023 50 28 9328.01 102

C Jul 2023 22 26 9326.25 99

A Aug 2023 9 21 9319.91 87

L Sep 2023 6 15 9314.22 77

WY 2023 159 151

* Oct 2023 6 6 9314.04 77

Nov 2023 4 6 9312.87 75

Dec 2023 4 6 9311.56 72

Jan 2024 4 6 9310.23 70

Feb 2024 4 6 9309.25 69

Mar 2024 5 6 9308.51 68

Apr 2024 8 9 9307.87 67

May 2024 26 15 9314.66 78

Jun 2024 40 18 9326.67 100

Jul 2024 16 21 9324.08 95

Aug 2024 8 18 9318.68 85

Sep 2024 6 15 9313.47 76

WY 2024 131 132

Oct 2024 7 9 9312.27 74

Nov 2024 5 5 9312.23 74

Dec 2024 4 5 9311.47 72

Jan 2025 5 5 9311.35 72

Feb 2025 4 5 9310.85 71

Mar 2025 5 5 9310.73 71

Apr 2025 9 9 9310.73 71

May 2025 26 15 9317.27 82

Jun 2025 40 18 9328.93 104

Jul 2025 15 24 9324.34 95

Aug 2025 8 18 9318.96 85

Sep 2025 7 18 9312.57 74

WY 2025 135 137

Oct 2025 7 9 9311.35 72

* Based on the Colorado River Basin Forecast Center's Most Probable Water Supply Forecast Model Run ID: 3239 Processed On: 11/7/2023 10:23:09AM 
Most Probable Inflow*

November 2023 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

Date (1000 Ac-Ft)

Evap

Losses

(1000 Ac-Ft)

Power

Release

(1000 Ac-Ft)

Bypass

Release

(1000 Ac-Ft)

UnReg

Inflow

(1000 Ac-Ft)

* Nov 2022 26 27 0 1 10 11 7444.87 282

H Dec 2022 24 25 0 6 10 17 7446.44 290

I Jan 2023 24 25 0 20 0 20 7447.43 295

S Feb 2023 20 21 0 20 0 20 7447.61 296

T Mar 2023 25 26 0 19 0 19 7448.79 303

O Apr 2023 77 79 1 23 0 23 7458.56 358

R May 2023 327 309 1 77 0 77 7491.44 589

I Jun 2023 312 290 1 106 6 131 7510.36 747

C Jul 2023 117 120 1 125 1 126 7509.50 739

A Aug 2023 49 61 1 105 0 105 7504.26 694

L Sep 2023 26 36 1 15 85 100 7496.50 629

WY 2023 1060 1052 8 517 170 706

* Oct 2023 30 30 1 30 33 63 7492.37 596

Nov 2023 28 30 0 34 0 34 7491.88 592

Dec 2023 25 27 0 39 0 39 7490.34 580

Jan 2024 23 25 0 43 0 43 7488.00 562

Feb 2024 22 24 0 41 0 41 7485.68 544

Mar 2024 34 35 0 44 0 44 7484.46 535

Apr 2024 65 66 1 64 0 64 7484.58 536

May 2024 195 184 1 202 31 233 7477.81 486

Jun 2024 245 223 1 42 0 42 7500.95 666

Jul 2024 90 95 1 79 0 79 7502.64 680

Aug 2024 51 61 1 84 0 84 7499.70 656

Sep 2024 33 42 1 83 0 83 7494.51 613

WY 2024 841 842 8 786 64 850

Oct 2024 36 38 1 63 0 63 7491.35 588

Nov 2024 30 30 0 30 0 30 7491.27 588

Dec 2024 26 27 0 46 0 46 7488.81 568

Jan 2025 25 25 0 46 0 46 7486.05 547

Feb 2025 23 24 0 41 0 41 7483.71 530

Mar 2025 38 38 0 40 0 40 7483.43 527

Apr 2025 78 78 1 54 0 54 7486.46 550

May 2025 204 193 1 203 29 232 7481.12 510

Jun 2025 251 229 1 63 0 63 7501.98 675

Jul 2025 86 95 1 84 0 84 7503.17 685

Aug 2025 55 65 1 87 0 87 7500.36 661

Sep 2025 35 46 1 82 0 82 7495.80 624

WY 2025 887 889 8 841 29 870

Oct 2025 36 38 1 79 0 79 7490.57 582

* Based on the Colorado River Basin Forecast Center's Most Probable Water Supply Forecast Model Run ID: 3239 Processed On: 11/7/2023 10:23:09AM 
Most Probable Inflow*

November 2023 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

Date (1000 Ac-Ft)

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)

* Nov 2022 27 11 1 12 21 0 21 7143.98 104

H Dec 2022 26 17 2 18 20 0 20 7141.82 103

I Jan 2023 26 20 2 21 20 0 20 7144.03 105

S Feb 2023 21 20 1 21 18 0 18 7148.07 108

T Mar 2023 26 19 2 21 19 0 19 7149.91 109

O Apr 2023 85 23 8 31 30 0 30 7151.54 110

R May 2023 364 77 37 114 112 0 112 7153.72 112

I Jun 2023 331 131 18 149 142 2 149 7153.53 112

C Jul 2023 121 126 4 130 130 0 130 7152.51 111

A Aug 2023 49 105 0 105 105 0 105 7152.17 111

L Sep 2023 27 100 1 100 102 0 102 7150.01 109

WY 2023 1136 706 76 782 780 2 787

* Oct 2023 31 63 1 64 68 0 68 7144.23 105

Nov 2023 29 34 1 35 27 0 27 7153.73 112

Dec 2023 26 39 1 40 40 0 40 7153.73 112

Jan 2024 25 43 2 45 45 0 45 7153.73 112

Feb 2024 24 41 2 43 43 0 43 7153.73 112

Mar 2024 38 44 4 48 48 0 48 7153.73 112

Apr 2024 73 64 8 72 72 0 72 7153.73 112

May 2024 210 233 15 248 248 0 248 7153.73 112

Jun 2024 265 42 20 62 62 0 62 7153.72 112

Jul 2024 95 79 5 84 84 0 84 7153.73 112

Aug 2024 54 84 3 87 87 0 87 7153.73 112

Sep 2024 35 83 2 85 85 0 85 7153.73 112

WY 2024 905 850 64 914 910 0 910

Oct 2024 37 63 1 64 64 0 64 7153.73 112

Nov 2024 32 30 2 32 32 0 32 7153.73 112

Dec 2024 27 46 1 47 47 0 47 7153.73 112

Jan 2025 26 46 1 47 47 0 47 7153.73 112

Feb 2025 25 41 2 43 43 0 43 7153.73 112

Mar 2025 40 40 2 42 42 0 42 7153.73 112

Apr 2025 89 54 11 65 65 0 65 7153.73 112

May 2025 226 232 22 254 254 0 254 7153.73 112

Jun 2025 265 63 14 77 77 0 77 7153.72 112

Jul 2025 90 84 4 88 87 0 87 7153.73 112

Aug 2025 56 87 1 88 88 0 88 7153.73 112

Sep 2025 36 82 1 83 83 0 83 7153.73 112

WY 2025 949 870 62 932 931 0 931

Oct 2025 37 79 1 80 80 0 80 7153.73 112

* Based on the Colorado River Basin Forecast Center's Most Probable Water Supply Forecast Model Run ID: 3239 Processed On: 11/7/2023 10:23:09AM 
Most Probable Inflow*

November 2023 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

Date (1000 Ac-Ft)

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)

* Nov 2022 29 21 2 23 21 2 23 6752.92 17 0 21

H Dec 2022 28 20 2 22 22 0 22 6751.64 17 2 21

I Jan 2023 28 20 2 22 22 0 22 6751.37 16 2 21

S Feb 2023 23 18 2 20 4 16 20 6751.71 17 1 19

T Mar 2023 29 19 2 22 0 22 22 6751.16 16 2 21

O Apr 2023 97 30 12 42 20 21 41 6752.29 17 19 22

R May 2023 406 112 42 154 108 41 155 6751.26 16 48 112

I Jun 2023 357 149 26 176 119 34 174 6757.16 18 63 125

C Jul 2023 128 130 7 137 117 20 138 6752.61 17 67 76

A Aug 2023 52 105 3 108 108 0 108 6751.75 17 66 45

L Sep 2023 29 102 2 104 104 0 104 6752.00 17 63 42

WY 2023 1243 787 106 894 698 167 893 374 547

* Oct 2023 32 68 1 69 32 39 70 6747.66 15 49 24

Nov 2023 31 27 2 29 28 0 28 6753.04 17 0 28

Dec 2023 29 40 3 43 43 0 43 6753.04 17 0 43

Jan 2024 29 45 4 49 49 0 49 6753.04 17 0 49

Feb 2024 27 43 3 46 46 0 46 6753.04 17 0 46

Mar 2024 44 48 6 54 54 0 54 6753.04 17 5 49

Apr 2024 83 72 10 82 82 0 82 6753.04 17 42 40

May 2024 240 248 30 278 134 144 278 6753.04 17 62 216

Jun 2024 300 62 35 97 97 0 97 6753.03 17 61 36

Jul 2024 103 84 8 92 92 0 92 6753.04 17 65 27

Aug 2024 59 87 5 92 92 0 92 6753.04 17 65 27

Sep 2024 39 85 4 89 89 0 89 6753.04 17 55 34

WY 2024 1016 910 111 1021 838 182 1021 404 619

Oct 2024 43 64 6 70 56 13 70 6753.04 17 55 15

Nov 2024 36 32 4 36 36 0 36 6753.04 17 0 36

Dec 2024 32 47 5 52 52 0 52 6753.04 17 0 52

Jan 2025 31 47 5 52 52 0 52 6753.04 17 0 52

Feb 2025 29 43 4 47 47 0 47 6753.04 17 0 47

Mar 2025 46 42 6 48 48 0 48 6753.04 17 5 43

Apr 2025 100 65 11 76 76 0 76 6753.04 17 42 34

May 2025 251 254 25 279 134 145 279 6753.04 17 62 217

Jun 2025 293 77 28 105 105 0 105 6753.03 17 61 44

Jul 2025 98 87 8 95 95 0 95 6753.04 17 65 30

Aug 2025 63 88 7 95 95 0 95 6753.04 17 65 30

Sep 2025 42 83 6 89 89 0 89 6753.04 17 55 34

WY 2025 1064 931 115 1046 888 158 1046 410 636

Oct 2025 43 80 6 86 60 26 86 6753.04 17 49 37

* Based on the Colorado River Basin Forecast Center's Most Probable Water Supply Forecast Model Run ID: 3239 Processed On: 11/7/2023 10:23:09AM 
Most Probable Inflow*

November 2023 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

Date (1000 Ac-Ft)

* Nov 2022 7 0 7639.00 62

H Dec 2022 5 0 7641.15 67

I Jan 2023 5 0 7643.44 72

S Feb 2023 5 2 7644.74 75

T Mar 2023 7 36 7630.44 46

O Apr 2023 36 45 7625.05 36

R May 2023 119 64 7651.55 91

I Jun 2023 75 41 7664.54 124

C Jul 2023 22 37 7658.55 108

A Aug 2023 11 38 7647.43 81

L Sep 2023 9 32 7636.60 57

WY 2023 314 299

* Oct 2023 6 9 7635.08 54

Nov 2023 4 2 7636.15 57

Dec 2023 4 2 7637.19 59

Jan 2024 4 2 7638.21 61

Feb 2024 4 2 7639.26 63

Mar 2024 6 2 7641.13 67

Apr 2024 16 2 7647.32 81

May 2024 60 31 7658.79 109

Jun 2024 50 43 7661.36 116

Jul 2024 15 41 7650.70 89

Aug 2024 12 38 7639.18 63

Sep 2024 11 29 7629.57 44

WY 2024 192 202

Oct 2024 13 16 7627.47 41

Nov 2024 8 2 7630.99 47

Dec 2024 7 2 7633.74 52

Jan 2025 6 2 7635.84 56

Feb 2025 5 2 7637.46 59

Mar 2025 10 2 7641.25 67

Apr 2025 23 2 7650.38 88

May 2025 68 34 7663.46 121

Jun 2025 62 62 7663.10 120

Jul 2025 21 42 7654.95 99

Aug 2025 15 38 7645.27 76

Sep 2025 16 30 7638.90 62

WY 2025 254 233

Oct 2025 13 17 7636.76 58

* Based on the Colorado River Basin Forecast Center's Most Probable Water Supply Forecast Model Run ID: 3239 Processed On: 11/7/2023 10:23:09AM 
Most Probable Inflow*

November 2023 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

Date (1000 Ac-Ft)

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)

* Nov 2022 23 0 16 1 0 19 6019.52 862 37

H Dec 2022 17 0 12 0 0 22 6018.45 852 37

I Jan 2023 20 0 15 0 0 20 6017.85 847 34

S Feb 2023 18 0 15 1 1 18 6017.38 843 31

T Mar 2023 71 0 98 1 3 18 6025.86 920 46

O Apr 2023 245 24 235 2 8 21 6045.83 1124 108

R May 2023 488 59 375 3 28 127 6063.70 1340 344

I Jun 2023 249 47 163 4 38 168 6060.10 1294 342

C Jul 2023 46 11 49 4 45 32 6057.46 1261 82

A Aug 2023 -3 1 23 3 42 42 6052.15 1196 45

L Sep 2023 1 0 24 3 25 46 6047.88 1147 47

WY 2023 1219 144 1059 24 195 565 1203

* Oct 2023 12 0 16 2 7 32 6045.70 1122 39

Nov 2023 17 0 15 1 0 22 6045.01 1115 33

Dec 2023 17 0 15 1 0 18 6044.63 1110 29

Jan 2024 18 0 16 1 0 18 6044.34 1107 29

Feb 2024 24 1 21 1 0 17 6044.62 1110 28

Mar 2024 50 4 42 1 6 18 6046.12 1127 33

Apr 2024 100 11 74 2 21 18 6048.99 1159 50

May 2024 200 26 145 3 36 18 6056.35 1247 130

Jun 2024 150 19 124 4 52 18 6060.36 1297 138

Jul 2024 29 2 54 4 55 28 6057.62 1263 73

Aug 2024 25 2 49 3 46 32 6054.93 1230 61

Sep 2024 26 1 43 3 25 30 6053.78 1216 54

WY 2024 668 65 614 26 248 272 699

Oct 2024 35 2 37 2 9 19 6054.44 1224 42

Nov 2024 28 1 21 1 0 18 6054.62 1226 36

Dec 2024 24 0 19 1 0 18 6054.58 1225 33

Jan 2025 22 0 18 1 0 18 6054.48 1224 31

Feb 2025 29 1 25 1 0 17 6055.07 1231 29

Mar 2025 92 10 74 2 5 18 6058.98 1280 41

Apr 2025 147 18 107 3 21 18 6064.12 1346 69

May 2025 251 34 183 4 35 192 6060.41 1298 327

Jun 2025 187 25 163 4 51 147 6057.26 1258 291

Jul 2025 33 2 51 4 55 29 6054.24 1221 80

Aug 2025 24 1 45 3 47 33 6051.08 1184 62

Sep 2025 31 2 43 3 26 30 6049.81 1169 56

WY 2025 903 96 786 26 249 557 1097

Oct 2025 35 2 38 2 9 18 6050.53 1177 41

* Based on the Colorado River Basin Forecast Center's Most Probable Water Supply Forecast Model Run ID: 3239 Processed On: 11/7/2023 10:23:09AM 
Most Probable Inflow*

November 2023 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

Date (1000 Ac-Ft)

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)

* Nov 2022 349 394 17 498 0 498 3528.02 4511 5720 507

H Dec 2022 281 358 13 550 0 550 3524.75 4496 5531 560

I Jan 2023 361 424 4 500 0 501 3523.45 4490 5456 510

S Feb 2023 270 337 4 480 0 480 3521.04 4479 5320 493

T Mar 2023 573 552 6 486 0 486 3522.02 4484 5375 500

O Apr 2023 1399 1103 10 819 90 909 3524.99 4497 5544 929

R May 2023 4520 3634 15 1088 0 1088 3561.42 4685 7888 1107

I Jun 2023 3646 2916 31 1064 0 1064 3583.47 4820 9574 1082

C Jul 2023 1054 923 40 1149 0 1149 3580.42 4800 9328 1164

A Aug 2023 307 454 39 902 0 902 3574.71 4764 8878 908

L Sep 2023 224 414 35 474 0 474 3573.58 4757 8790 475

WY 2023 13421 12043 230 8491 90 8581 8730

* Oct 2023 324 432 24 480 0 480 3572.71 4752 8724 477

Nov 2023 360 394 23 500 0 500 3571.14 4742 8604 505

Dec 2023 320 428 18 600 0 600 3568.80 4728 8428 603

Jan 2024 340 447 5 723 0 723 3565.29 4707 8168 727

Feb 2024 370 457 6 639 0 639 3562.90 4693 7994 650

Mar 2024 520 472 9 675 0 675 3560.15 4677 7797 689

Apr 2024 775 673 15 601 0 601 3560.88 4682 7850 618

May 2024 1800 1695 19 599 0 599 3574.31 4761 8847 620

Jun 2024 2300 1816 33 628 0 628 3587.63 4847 9917 645

Jul 2024 825 767 42 709 0 709 3587.80 4848 9931 725

Aug 2024 350 474 41 758 0 758 3584.16 4824 9631 771

Sep 2024 340 478 38 568 0 568 3582.71 4815 9512 584

WY 2024 8624 8533 273 7480 0 7480 7613

Oct 2024 417 457 26 480 0 480 3582.15 4811 9467 496

Nov 2024 461 471 25 500 0 500 3581.53 4807 9417 505

Dec 2024 361 449 20 600 0 600 3579.55 4794 9259 603

Jan 2025 350 433 6 723 0 723 3576.08 4772 8985 727

Feb 2025 397 458 6 639 0 639 3573.84 4759 8811 650

Mar 2025 614 531 10 675 0 675 3571.98 4747 8668 689

Apr 2025 920 752 17 601 0 601 3573.60 4757 8792 618

May 2025 2060 2060 21 599 0 599 3590.11 4864 10126 620

Jun 2025 2423 1978 37 628 0 628 3603.84 4961 11341 645

Jul 2025 711 677 47 709 0 709 3603.03 4955 11267 724

Aug 2025 371 500 47 758 0 758 3599.93 4932 10985 772

Sep 2025 316 450 43 568 0 568 3598.27 4921 10836 584

WY 2025 9401 9216 306 7480 0 7480 7633

Oct 2025 417 510 29 643 0 643 3596.58 4909 10686 659

* Based on the Colorado River Basin Forecast Center's Most Probable Water Supply Forecast Model Run ID: 3239 Processed On: 11/7/2023 10:23:09AM 
Most Probable Inflow*

November 2023 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

Date (1000 Ac-Ft)

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)

* Nov 2022 498 18 40 713 12.0 8 714 467 1043.02 7187

H Dec 2022 550 63 32 438 7.1 8 439 475 1044.82 7313

I Jan 2023 501 103 22 412 6.7 7 413 485 1046.97 7466

S Feb 2023 480 46 21 494 8.9 8 493 485 1047.02 7469

T Mar 2023 486 226 23 754 12.3 11 749 481 1046.03 7399

O Apr 2023 909 243 31 831 14.0 12 830 498 1049.69 7661

R May 2023 1088 185 40 855 13.9 22 772 520 1054.28 7995

I Jun 2023 1064 62 50 886 14.9 23 874 530 1056.39 8152

C Jul 2023 1149 61 48 760 12.4 30 758 553 1061.02 8501

A Aug 2023 902 112 54 580 9.4 25 580 574 1065.35 8834

L Sep 2023 474 126 53 492 8.3 16 462 577 1065.82 8871

WY 2023 8581 1340 458 7633 187 7518

* Oct 2023 480 31 50 487 7.9 14 521 574 1065.34 8833

Nov 2023 500 63 44 558 9.4 9 558 571 1064.76 8788

Dec 2023 600 72 36 382 6.2 9 382 586 1067.71 9019

Jan 2024 723 75 25 548 8.9 11 548 599 1070.25 9220

Feb 2024 639 71 23 533 9.3 8 533 608 1071.98 9357

Mar 2024 675 97 25 876 14.3 14 876 599 1070.28 9222

Apr 2024 601 60 34 1001 16.8 16 1001 576 1065.64 8856

May 2024 599 37 42 981 16.0 20 981 551 1060.65 8473

Jun 2024 628 22 50 892 15.0 28 892 531 1056.66 8172

Jul 2024 709 55 48 786 12.8 32 786 525 1055.37 8076

Aug 2024 758 86 52 748 12.2 34 748 526 1055.49 8085

Sep 2024 568 72 50 646 10.9 30 646 520 1054.40 8004

WY 2024 7480 740 480 8439 225 8472

Oct 2024 480 77 47 459 7.5 24 459 522 1054.73 8029

Nov 2024 500 63 42 585 9.8 14 585 517 1053.75 7956

Dec 2024 600 72 34 517 8.4 9 517 524 1055.18 8062

Jan 2025 723 75 23 566 9.2 10 566 536 1057.69 8249

Feb 2025 639 71 22 537 9.7 7 537 545 1059.48 8384

Mar 2025 675 97 24 880 14.3 13 880 536 1057.66 8247

Apr 2025 601 60 32 1005 16.9 15 1005 512 1052.71 7880

May 2025 599 37 39 985 16.0 19 985 487 1047.40 7496

Jun 2025 628 22 47 896 15.1 26 896 468 1043.15 7196

Jul 2025 709 55 45 790 12.9 30 790 462 1041.79 7101

Aug 2025 758 86 48 753 12.2 32 753 462 1041.94 7112

Sep 2025 568 72 47 651 10.9 28 651 457 1040.77 7031

WY 2025 7480 786 451 8623 227 8623

Oct 2025 643 77 45 463 7.5 23 463 469 1043.33 7209

* Based on the Colorado River Basin Forecast Center's Most Probable Water Supply Forecast Model Run ID: 3239 Processed On: 11/7/2023 10:23:09AM 
Most Probable Inflow*

November 2023 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

Date (1000 Ac-Ft)

Evap

Losses

(1000 Ac-Ft)

Power

Release

(1000 Ac-Ft)

Spill

Release

(1000 Ac-Ft)

Hoover

Release

(1000 Ac-Ft)

Total

Release

(1000 CFS)

* Nov 2022 713 -15 13 516 0 516 8.7 640.22 1623

H Dec 2022 438 4 13 436 0 436 7.1 639.97 1617

I Jan 2023 412 2 9 347 0 347 5.6 642.12 1675

S Feb 2023 494 -18 8 429 0 444 8.0 643.00 1699

T Mar 2023 754 -6 10 705 0 705 11.5 644.17 1731

O Apr 2023 831 -10 13 844 0 844 14.2 642.84 1694

R May 2023 855 -10 14 833 0 859 14.0 641.83 1667

I Jun 2023 886 -15 14 819 0 819 13.8 643.22 1705

C Jul 2023 760 -15 12 736 0 736 12.0 643.06 1700

A Aug 2023 580 -14 16 555 0 555 9.0 642.86 1695

L Sep 2023 492 -7 16 563 0 578 9.7 638.85 1587

WY 2023 7633 -107 152 7325 0 7381

* Oct 2023 487 -1 14 547 0 547 8.9 635.96 1511

Nov 2023 558 -16 13 449 0 449 7.5 639.01 1591

Dec 2023 382 -2 13 341 0 341 5.5 640.01 1618

Jan 2024 548 -11 9 480 0 480 7.8 641.80 1666

Feb 2024 533 -13 8 512 0 512 8.9 641.80 1666

Mar 2024 876 -10 10 822 0 822 13.4 643.05 1700

Apr 2024 1001 -14 13 976 0 976 16.4 643.00 1699

May 2024 981 -13 14 954 0 954 15.5 643.00 1699

Jun 2024 892 -21 14 857 0 857 14.4 643.00 1699

Jul 2024 786 -21 12 780 0 780 12.7 642.00 1671

Aug 2024 748 -17 15 716 0 716 11.6 642.00 1671

Sep 2024 646 -6 16 678 0 678 11.4 640.01 1617

WY 2024 8439 -144 151 8112 0 8112

Oct 2024 459 -11 14 617 0 617 10.0 633.00 1434

Nov 2024 585 -16 13 505 0 505 8.5 635.00 1486

Dec 2024 517 -2 13 384 0 384 6.2 639.51 1604

Jan 2025 566 -11 9 484 0 484 7.9 641.80 1666

Feb 2025 537 -13 8 516 0 516 9.3 641.80 1666

Mar 2025 880 -10 10 826 0 826 13.4 643.05 1700

Apr 2025 1005 -14 13 981 0 981 16.5 643.00 1699

May 2025 985 -13 14 958 0 958 15.6 643.00 1699

Jun 2025 896 -21 14 861 0 861 14.5 643.00 1699

Jul 2025 790 -21 12 784 0 784 12.8 642.00 1671

Aug 2025 753 -17 15 720 0 720 11.7 642.00 1671

Sep 2025 651 -6 16 682 0 682 11.5 640.01 1617

WY 2025 8623 -154 151 8318 0 8318

Oct 2025 463 -11 14 621 0 621 10.1 633.00 1434

* Based on the Colorado River Basin Forecast Center's Most Probable Water Supply Forecast Model Run ID: 3239 Processed On: 11/7/2023 10:23:09AM 
Most Probable Inflow*

November 2023 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

Date (1000 Ac-Ft)

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)

* Nov 2022 516 1 9 336 5.6 103 67 447.11 563 89 1.5

H Dec 2022 436 14 7 277 4.5 101 63 447.06 562 87 1.4

I Jan 2023 347 16 6 261 4.2 54 40 447.14 564 125 2.0

S Feb 2023 444 1 8 370 6.7 16 40 447.47 570 130 2.3

T Mar 2023 705 39 9 553 9.0 70 91 448.31 586 168 2.7

O Apr 2023 844 50 11 669 11.2 49 169 447.68 574 153 2.6

R May 2023 859 31 13 655 10.7 73 166 446.26 547 135 2.2

I Jun 2023 819 16 15 636 10.7 70 69 448.25 585 130 2.2

C Jul 2023 736 17 17 634 10.3 70 22 448.36 587 131 2.1

A Aug 2023 555 22 17 485 7.9 61 19 447.78 576 105 1.7

L Sep 2023 578 13 15 462 7.8 43 55 448.12 582 123 2.1

WY 2023 7381 247 139 5730 816 867 1443

* Oct 2023 547 17 12 439 7.1 44 69 447.74 575 68 1.1

Nov 2023 449 14 9 344 5.8 66 53 447.00 561 86 1.4

Dec 2023 341 17 6 237 3.9 71 49 446.50 552 83 1.3

Jan 2024 480 7 6 313 5.1 86 75 446.50 552 138 2.2

Feb 2024 512 4 8 411 7.1 8 83 446.50 552 124 2.2

Mar 2024 822 2 9 608 9.9 98 96 446.70 555 147 2.4

Apr 2024 976 7 11 727 12.2 89 108 448.70 593 147 2.5

May 2024 954 4 13 734 11.9 85 114 448.70 593 110 1.8

Jun 2024 857 10 16 714 12.0 82 44 448.70 593 116 2.0

Jul 2024 780 17 17 686 11.2 85 11 448.00 580 123 2.0

Aug 2024 716 19 17 621 10.1 85 11 447.50 571 102 1.7

Sep 2024 678 12 15 533 9.0 82 49 447.50 570 99 1.7

WY 2024 8112 129 139 6366 880 763 1342

Oct 2024 617 21 12 482 7.8 85 51 447.50 571 89 1.4

Nov 2024 505 14 9 375 6.3 82 47 447.50 570 115 1.9

Dec 2024 384 17 7 270 4.4 85 54 446.50 552 110 1.8

Jan 2025 484 7 6 313 5.1 90 75 446.50 552 138 2.2

Feb 2025 516 4 8 411 7.4 12 83 446.50 552 124 2.2

Mar 2025 826 2 9 608 9.9 102 96 446.70 555 147 2.4

Apr 2025 981 7 11 726 12.2 93 108 448.70 593 147 2.5

May 2025 958 4 13 733 11.9 89 114 448.70 593 110 1.8

Jun 2025 861 10 16 714 12.0 86 44 448.70 593 116 2.0

Jul 2025 784 17 17 686 11.2 89 11 448.00 580 123 2.0

Aug 2025 720 19 17 621 10.1 89 11 447.50 571 102 1.7

Sep 2025 682 12 15 533 9.0 86 49 447.50 570 99 1.7

WY 2025 8318 134 139 6472 987 745 1420

Oct 2025 621 21 12 482 7.8 89 51 447.50 571 89 1.4

* Based on the Colorado River Basin Forecast Center's Most Probable Water Supply Forecast Model Run ID: 3239 Processed On: 11/7/2023 10:23:09AM 
Most Probable Inflow*

November 2023 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

Date (1000 CFS)

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

* Nov 2022 713 12.0 1043.02 7187 -230 395.39 948.8 254.6 72 357.1

H Dec 2022 438 7.1 1044.82 7313 126 403.20 975.8 152.9 72 348.9

I Jan 2023 412 6.7 1046.97 7466 152 403.66 866.6 143.8 64 348.8

S Feb 2023 494 8.9 1047.02 7469 4 399.03 810.5 175.9 60 356.5

T Mar 2023 754 12.3 1046.03 7399 -70 397.62 863.6 270.4 65 358.8

O Apr 2023 831 14.0 1049.69 7661 262 402.80 839.3 300.5 65 361.7

R May 2023 855 13.9 1054.28 7995 335 405.85 986.6 313.1 71 366.3

I Jun 2023 886 14.9 1056.39 8152 156 407.42 1080.0 326.9 78 369.0

C Jul 2023 760 12.4 1061.02 8501 349 413.93 1283.0 280.8 90 369.5

A Aug 2023 580 9.4 1065.35 8834 333 420.26 1308.1 212.8 90 366.9

L Sep 2023 492 8.3 1065.82 8871 37 419.70 1160.0 181.4 79 368.4

WY 2023 7632 2759.0

* Oct 2023 487 7.9 1065.34 8833 -37 421.11 1037.5 180.9 71 371.7

Nov 2023 558 9.4 1064.76 8788 -45 418.95 948.0 209.0 66 374.4

Dec 2023 382 6.2 1067.71 9019 231 418.81 957.0 140.1 66 366.6

Jan 2024 548 8.9 1070.25 9220 201 420.07 1044.0 203.8 71 371.8

Feb 2024 533 9.3 1071.98 9357 137 422.50 921.1 201.0 62 377.5

Mar 2024 876 14.3 1070.28 9222 -135 420.73 1112.0 339.5 75 387.4

Apr 2024 1001 16.8 1065.64 8856 -366 415.27 1351.0 373.2 93 372.8

May 2024 981 16.0 1060.65 8473 -383 411.13 1242.0 366.6 88 373.7

Jun 2024 892 15.0 1056.66 8172 -301 405.39 1390.0 323.8 100 363.2

Jul 2024 786 12.8 1055.37 8076 -96 403.10 1399.4 285.1 100 362.7

Aug 2024 748 12.2 1055.49 8085 9 402.85 1399.4 269.8 100 360.6

Sep 2024 646 10.9 1054.40 8004 -81 403.01 1386.6 230.2 100 356.0

WY 2024 8439 3123.0

Oct 2024 459 7.5 1054.73 8029 25 409.13 830.0 168.9 60 368.0

Nov 2024 585 9.8 1053.75 7956 -72 411.10 830.0 217.1 60 371.0

Dec 2024 517 8.4 1055.18 8062 106 408.84 895.0 192.0 63 371.6

Jan 2025 566 9.2 1057.69 8249 187 408.61 907.9 206.5 63 365.1

Feb 2025 537 9.7 1059.48 8384 135 410.68 821.5 199.0 56 370.8

Mar 2025 880 14.3 1057.66 8247 -137 410.23 826.1 336.9 57 382.6

Apr 2025 1005 16.9 1052.71 7880 -367 403.29 1220.4 364.6 87 362.8

May 2025 985 16.0 1047.40 7496 -383 398.19 1194.9 349.6 87 354.9

Jun 2025 896 15.1 1043.15 7196 -300 393.49 1168.2 316.5 87 353.4

Jul 2025 790 12.9 1041.79 7101 -95 389.70 1334.0 276.1 100 349.4

Aug 2025 753 12.2 1041.94 7112 10 389.42 1335.0 261.5 100 347.5

Sep 2025 651 10.9 1040.77 7031 -81 389.56 1327.5 223.6 100 343.5

WY 2025 8623 3112.4

Oct 2025 463 7.5 1043.33 7209 178 394.81 1046.8 163.9 78 353.9

* Based on the Colorado River Basin Forecast Center's Most Probable Water Supply Forecast Model Run ID: 3239 Processed On: 11/7/2023 10:23:09AM 
Most Probable Inflow*

November 2023 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

Date (1000 CFS)

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

* Nov 2022 516 8.7 640.22 1623 169 141.13 154.7 62.5 61 121.1

H Dec 2022 436 7.1 639.97 1617 -7 140.89 159.6 53.9 63 123.5

I Jan 2023 347 5.6 642.12 1675 58 143.26 157.9 44.3 62 127.7

S Feb 2023 429 8.0 643.00 1699 24 141.81 185.8 56.7 73 132.3

T Mar 2023 705 11.5 644.17 1731 32 141.44 215.5 93.4 85 132.4

O Apr 2023 844 14.2 642.84 1694 -36 138.90 255.0 108.3 100 128.3

R May 2023 833 14.0 641.83 1667 -28 137.48 255.0 109.4 100 131.4

I Jun 2023 819 13.8 643.22 1705 38 141.71 249.9 103.9 98 126.9

C Jul 2023 736 12.0 643.06 1700 -4 143.75 250.1 94.0 98 127.6

A Aug 2023 555 9.0 642.86 1695 -5 143.43 255.0 71.5 100 128.7

L Sep 2023 563 9.7 638.85 1587 -108 139.25 204.0 73.6 80 130.8

WY 2023 7325 938.3

* Oct 2023 547 8.9 635.96 1511 -76 132.98 189.2 67.1 74 122.7

Nov 2023 449 7.5 639.01 1591 80 136.69 156.4 55.3 61 123.1

Dec 2023 341 5.5 640.01 1618 27 139.64 167.8 42.9 66 125.8

Jan 2024 480 7.8 641.80 1666 49 139.99 164.5 60.5 65 126.1

Feb 2024 512 8.9 641.80 1666 0 140.41 200.5 64.8 79 126.5

Mar 2024 822 13.4 643.05 1700 34 139.26 210.6 103.1 83 125.5

Apr 2024 976 16.4 643.00 1699 -2 138.79 255.0 122.1 100 125.0

May 2024 954 15.5 643.00 1699 0 139.08 255.0 119.5 100 125.3

Jun 2024 857 14.4 643.00 1699 0 139.46 255.0 107.7 100 125.6

Jul 2024 780 12.7 642.00 1671 -27 139.58 255.0 98.1 100 125.8

Aug 2024 716 11.6 642.00 1671 0 139.48 255.0 90.0 100 125.7

Sep 2024 678 11.4 640.01 1617 -54 138.59 255.0 84.6 100 124.9

WY 2024 8112 1015.7

Oct 2024 617 10.0 633.00 1434 -183 134.64 227.0 74.8 89 121.3

Nov 2024 505 8.5 635.00 1486 51 132.78 159.8 60.4 63 119.6

Dec 2024 384 6.2 639.51 1604 118 137.05 154.7 47.4 61 123.5

Jan 2025 484 7.9 641.80 1666 62 139.71 156.3 60.9 61 125.9

Feb 2025 516 9.3 641.80 1666 0 140.24 156.6 65.2 61 126.3

Mar 2025 826 13.4 643.05 1700 34 139.24 194.1 103.6 76 125.4

Apr 2025 981 16.5 643.00 1699 -2 138.77 249.9 122.6 98 125.0

May 2025 958 15.6 643.00 1699 0 139.05 255.0 120.0 100 125.3

Jun 2025 861 14.5 643.00 1699 0 139.44 255.0 108.2 100 125.6

Jul 2025 784 12.8 642.00 1671 -27 139.56 255.0 98.6 100 125.7

Aug 2025 720 11.7 642.00 1671 0 139.46 255.0 90.5 100 125.6

Sep 2025 682 11.5 640.01 1617 -54 138.56 255.0 85.1 100 124.8

WY 2025 8318 1037.4

Oct 2025 621 10.1 633.00 1434 -183 134.61 227.0 75.3 89 121.3

* Based on the Colorado River Basin Forecast Center's Most Probable Water Supply Forecast Model Run ID: 3239 Processed On: 11/7/2023 10:23:09AM 
Most Probable Inflow*

November 2023 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

Date (1000 CFS)

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

* Nov 2022 336 5.6 447.11 563 -1 82.56 82.0 22.8 68 68.0

H Dec 2022 277 4.5 447.06 562 0 82.38 60.0 18.5 50 66.8

I Jan 2023 261 4.2 447.14 564 2 81.41 72.6 17.3 60 66.4

S Feb 2023 357 6.7 447.47 570 6 81.43 94.3 25.4 79 71.2

T Mar 2023 553 9.0 448.31 586 16 81.24 120.0 38.6 100 69.8

O Apr 2023 669 11.2 447.68 574 -12 79.27 120.0 46.4 100 69.4

R May 2023 655 10.7 446.26 547 -26 78.52 116.1 45.3 97 69.2

I Jun 2023 636 10.7 448.25 585 37 79.10 120.0 44.0 100 69.2

C Jul 2023 634 10.3 448.36 587 2 82.12 120.0 44.1 100 69.6

A Aug 2023 485 7.9 447.78 576 -11 81.56 120.0 33.5 100 69.1

L Sep 2023 449 7.8 448.12 582 7 81.96 120.0 32.1 100 71.7

WY 2023 5703 395.3

* Oct 2023 439 7.1 447.74 575 -7 81.03 91.0 30.6 76 69.6

Nov 2023 344 5.8 447.00 561 -14 80.21 80.0 23.6 67 68.7

Dec 2023 237 3.9 446.50 552 -9 80.64 60.0 15.1 50 63.6

Jan 2024 313 5.1 446.50 552 0 79.71 73.5 20.9 61 66.8

Feb 2024 411 7.1 446.50 552 0 78.66 96.2 28.4 80 69.1

Mar 2024 608 9.9 446.70 555 4 77.53 120.0 41.7 100 68.6

Apr 2024 727 12.2 448.70 593 38 77.71 120.0 50.5 100 69.5

May 2024 734 11.9 448.70 593 0 78.82 120.0 51.5 100 70.2

Jun 2024 714 12.0 448.70 593 0 78.79 120.0 50.1 100 70.2

Jul 2024 686 11.2 448.00 580 -13 78.77 120.0 47.9 100 69.8

Aug 2024 621 10.1 447.50 571 -10 78.59 120.0 43.1 100 69.4

Sep 2024 533 9.0 447.50 570 0 78.83 120.0 36.9 100 69.3

WY 2024 6366 440.4

Oct 2024 482 7.8 447.50 571 0 79.34 90.0 33.8 75 70.1

Nov 2024 375 6.3 447.50 570 0 80.08 92.0 25.7 77 68.6

Dec 2024 270 4.4 446.50 552 -19 80.59 114.2 17.2 95 63.6

Jan 2025 313 5.1 446.50 552 0 79.71 94.8 20.9 79 66.8

Feb 2025 411 7.4 446.50 552 0 78.54 92.1 28.4 77 69.0

Mar 2025 608 9.9 446.70 555 4 77.53 120.0 41.7 100 68.6

Apr 2025 726 12.2 448.70 593 38 77.71 120.0 50.5 100 69.5

May 2025 733 11.9 448.70 593 0 78.82 120.0 51.5 100 70.2

Jun 2025 714 12.0 448.70 593 0 78.79 120.0 50.1 100 70.2

Jul 2025 686 11.2 448.00 580 -13 78.77 120.0 47.9 100 69.8

Aug 2025 621 10.1 447.50 571 -10 78.59 120.0 43.1 100 69.4

Sep 2025 533 9.0 447.50 570 0 78.83 120.0 36.9 100 69.3

WY 2025 6472 447.7

Oct 2025 482 7.8 447.50 571 0 79.34 90.0 33.8 75 70.1

* Based on the Colorado River Basin Forecast Center's Most Probable Water Supply Forecast Model Run ID: 3239 Processed On: 11/7/2023 10:23:09AM 
Most Probable Inflow*

November 2023 24-Month Study

Upper Basin Power

OPERATION PLAN FOR COLORADO RIVER SYSTEM RESERVOIRS

Fontenelle

Reservoir

1000 MWHR

Crystal

Reservoir

1000 MWHR

Glen

Canyon

Date 1000 MWHR

Flaming

Gorge

1000 MWHR

Blue 

Mesa

1000 MWHR

Morrow

Point

1000 MWHR 

* Nov 2022 181 38 0 6 2 1

H Dec 2022 199 40 1 6 2 4

I Jan 2023 182 41 4 5 2 4

S Feb 2023 172 37 5 6 0 1

T Mar 2023 173 23 4 6 0 3

Winter 2023 1083 220 15 49 16 15

O Apr 2023 291 17 5 9 3 4

R May 2023 412 18 21 40 20 7

I Jun 2023 439 43 32 50 22 8

C Jul 2023 483 29 38 45 22 8

A Aug 2023 374 44 31 37 21 6

L Sep 2023 194 44 4 35 20 6

Summer 2023 2195 194 131 215 109 39

* Oct 2023 199 38 8 23 6 6

Nov 2023 197 30 10 10 5 5

Dec 2023 235 44 12 14 7 5

Jan 2024 281 44 13 16 9 5

Feb 2024 246 41 12 16 8 4

Mar 2024 259 22 13 17 9 4

Winter 2024 1416 220 68 96 44 27

Apr 2024 230 21 19 26 14 2

May 2024 233 59 58 89 23 6

Jun 2024 251 48 12 22 17 7

Jul 2024 287 26 24 30 16 8

Aug 2024 306 36 26 31 16 7

Sep 2024 228 35 25 31 15 5

Summer 2024 1536 225 164 230 101 35

Oct 2024 192 24 19 23 10 0

Nov 2024 201 24 9 12 6 0

Dec 2024 240 36 14 17 9 1

Jan 2025 287 36 14 17 9 4

Feb 2025 252 33 12 16 8 4

Mar 2025 266 20 12 15 8 3

Winter 2025 1438 173 78 99 51 12

Apr 2025 236 19 16 24 13 2

May 2025 240 68 59 92 23 6

Jun 2025 260 33 19 28 18 8

Jul 2025 297 26 25 31 16 8

Aug 2025 316 36 27 32 16 6

Sep 2025 236 35 25 30 15 5

Summer 2025 1586 216 170 236 103 34

Oct 2025 266 36 24 29 10 5

* Based on the Colorado River Basin Forecast Center's Most Probable Water Supply Forecast Model Run ID: 3239 Processed On: 11/7/2023 10:23:09AM
Most Probable Inflow*

November 2023 24-Month Study

Flood Control Criteria - Beginning of Month Conditions

OPERATION PLAN FOR COLORADO RIVER SYSTEM RESERVOIRS

Navajo

Date KAF

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 * * * * * * * * C R E D I T A B L E S P A C E * * * *

Nov 2023 508 228 526 14590 15852 18787 34639 508 228 526 1262 14590 18787 34639 3810 558 0 24.9

Dec 2023 545 232 533 14709 16020 18832 34851 545 232 533 1310 14709 18832 34851 4580 382 0 24.9

Jan 2024 637 244 537 14886 16305 18601 34906 637 244 537 1419 14886 18601 34906 5350 548 0 24.8

* * * * E F F E C T I V E S P A C E * * * *

Jan 2024 637 244 537 14886 16305 18601 34906 274 127 339 740 14886 18601 34227 5350 548 0 24.8

Feb 2024 724 263 541 15146 16673 18400 35073 361 147 341 849 15146 18400 34396 1500 533 0 24.6

Mar 2024 799 280 538 15320 16936 18263 35199 435 167 337 938 15320 18263 34521 1500 876 0 24.4

Apr 2024 769 290 521 15517 17096 18398 35494 399 177 313 889 15517 18398 34804 1500 1001 0 24.2

May 2024 723 289 488 15464 16964 18764 35728 347 176 258 780 15464 18764 35008 1500 981 0 24.9

Jun 2024 707 339 401 14466 15913 19147 35060 323 214 131 668 14466 19147 34282 1500 892 0 26.1

Jul 2024 504 159 351 13397 14410 19448 33858 104 11 25 140 13397 19448 32985 1500 786 0 26.0

* * * * C R E D I T A B L E S P A C E * * * *

Aug 2024 417 145 385 13382 14330 19544 33874 417 145 385 947 13382 19544 33874 1500 748 0 25.6

Sep 2024 467 169 418 13683 14738 19535 34273 467 169 418 1055 13683 19535 34273 2270 646 0 25.2

Oct 2024 537 211 432 13802 14982 19616 34598 537 211 432 1180 13802 19616 34598 3040 459 0 25.0

Nov 2024 564 236 424 13847 15072 19591 34663 564 236 424 1225 13847 19591 34663 3810 585 0 24.9

Dec 2024 587 237 422 13897 15143 19664 34807 587 237 422 1246 13897 19664 34807 4580 517 0 24.8

Jan 2025 661 256 423 14055 15395 19558 34953 661 256 423 1339 14055 19558 34953 5350 566 0 24.7

* * * * E F F E C T I V E S P A C E * * * *

Jan 2025 661 256 423 14055 15395 19558 34953 378 144 181 704 14055 19558 34317 5350 566 0 24.7

Feb 2025 727 278 424 14329 15757 19371 35129 444 166 182 791 14329 19371 34492 1500 537 0 24.6

Mar 2025 782 295 417 14503 15997 19236 35233 497 184 174 855 14503 19236 34594 1500 880 0 24.4

Apr 2025 760 297 368 14646 16071 19373 35445 471 186 119 775 14646 19373 34794 1500 1005 0 24.4

May 2025 711 274 302 14522 15809 19740 35550 416 162 29 608 14522 19740 34870 1500 985 0 25.3

Jun 2025 680 314 350 13188 14533 20124 34657 378 190 39 607 13188 20124 33918 1500 896 0 26.6

Jul 2025 408 150 390 11973 12920 20424 33344 85 3 23 110 11973 20424 32507 1500 790 0 26.4

* * * * C R E D I T A B L E S P A C E * * * *

Aug 2025 341 140 427 12047 12954 20519 33473 341 140 427 908 12047 20519 33473 1500 753 0 26.0

Sep 2025 395 164 464 12329 13351 20508 33860 395 164 464 1022 12329 20508 33860 2270 651 0 25.6

Oct 2025 467 201 479 12477 13624 20589 34214 467 201 479 1147 12477 20589 34214 3040 463 0 25.3

* Based on the Colorado River Basin Forecast Center's Most Probable Water Supply Forecast Model Run ID: 3239 Processed On: 11/7/2023 10:23:09AM