2027-2028 Operating Guidelines - Revision history

Cellsworth at 17:26, 11 September 2026

2026-09-11T17:26:33Z

2026-09-04T17:50:40Z

2026-09-04T17:49:27Z

2026-09-04T17:46:48Z

2026-09-04T17:28:40Z

2026-09-04T17:21:40Z

2026-09-04T17:04:53Z

2026-08-24T19:47:56Z

2026-08-21T20:54:03Z

2026-08-21T20:52:06Z

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 *[https://www.usbr.gov/ColoradoRiverBasin/post2026/index.html Reclamation Site: Colorado River Post-2026 Operations]
 *[https://www.usbr.gov/ColoradoRiverBasin/post2026/decision-doc/2027-2028OperatingGuidelines_Final.pdf Colorado River Guidelines for Coordinated Operations of Lake Powell and Lake Mead for Operating Years 2027 and 2028]
 *[https://www.usbr.gov/ColoradoRiverBasin/post2026/decision-doc/P26_RecordofDecision_Final.pdf ROD-Decision Framework for Colorado River Guidelines: Coordinated Operations of Lake Powell and Lake Mead (2027–2036)]
 *[https://www.usbr.gov/ColoradoRiverBasin/post2026/final-eis/index.html Post-2026 Operational Guidelines and Strategies for Lake Powell and Lake Mead – Final Environmental Impact Statement]

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-! <h2 style="margin:0; background:#cedff2; font-size:120%; font-weight:bold; border:1px solid #a3bfb1; text-align:left; color:#000; padding:0.2em 0.4em;">Outline </h2>
+! <h2 style="margin:0; background:#cedff2; font-size:120%; font-weight:bold; border:1px solid #a3bfb1; text-align:left; color:#000; padding:0.2em 0.4em;">Framework</h2>
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 *[https://www.usbr.gov/ColoradoRiverBasin/post2026/decision-doc/2027-2028OperatingGuidelines_Final.pdf Colorado River Guidelines for Coordinated Operations of Lake Powell and Lake Mead for Operating Years 2027 and 2028]
 *[https://www.usbr.gov/ColoradoRiverBasin/post2026/decision-doc/P26_RecordofDecision_Final.pdf ROD-Decision Framework for Colorado River Guidelines: Coordinated Operations of Lake Powell and Lake Mead (2027–2036)]

@@ Line 47: / Line 47: @@
 ==Lake Powell operations:==
-For the August 24-Month study, perform Exhibit Runs using the following potential release volumes [with LTEMP monthly volumes] in descending order to determine an initial Water Year release volume that maintains a minimum Lake Powell elevation of 3510' throughout the WY.
+For the August 24-Month study, perform Exhibit Runs using the following potential release volumes [with LTEMP monthly volumes] in descending order to determine an initial Water Year release volume that maintains a minimum Lake Powell elevation of 3510' throughout the WY. [[File:LakePowellOperations.png|right|400px]]
 ===Upper Elevation Range: ===
@@ Line 86: / Line 86: @@
 ===Elevation between 1125' and 1220' (full pool)===
-If the most probable rises above 1125' in the next 12 months
+If the most probable rises above 1125' in the next 12 months[[File:LakeMeadOperations.png|right|700px]]
 *Consult to increase apportionment above 6.25 maf

@@ Line 81: / Line 81: @@
 *If any Basin State believes there is inequity between volumes available in the CRSP Upper Units and reductions in Powell releases
 *If Powell releases <6.0 maf are needed to maintain 3500' in March of the following year
 |}

@@ Line 17: / Line 17: @@
 </table>
-[[File:IMG_4472.JPG|center|500px]]
+[[File:IMG_4472.JPG|center|300px]]
-The post marking the division of the Upper and Lower Basins at Lees Ferry
+The post placed in the 1920s by the USGS at "Lee Ferry" marking the division of the upper and lower basins
-−
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-! <h2 style="margin:0; background:#cedff2; font-size:120%; font-weight:bold; border:1px solid #a3bfb1; text-align:left; color:#000; padding:0.2em 0.4em;">Updates</h2>
+! <h2 style="margin:0; background:#cedff2; font-size:120%; font-weight:bold; border:1px solid #a3bfb1; text-align:left; color:#000; padding:0.2em 0.4em;">Outline </h2>
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-*[https://www.usbr.gov/ColoradoRiverBasin/interimguidelines/seis/index.html Supplemental Environmental Impact Statement for Near-term Colorado River Operations]
+*[https://www.usbr.gov/ColoradoRiverBasin/interimguidelines/seis/index.html 2024 Supplemental Environmental Impact Statement (SEIS) for Near-term Colorado River Operations]
 *[https://www.usbr.gov/ColoradoRiverBasin/dcp/index.html Drought Contingency Plans]
 *[https://gcdamp.com/index.php/Interim_Guidelines 2007 Interim Guidelines for Lower Basin Shortages]

← Older revision		Revision as of 20:54, 21 August 2026
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		+	==2027-2028 Operating Guidelines==
	Several reservoir and water management decisional documents and agreements that govern the operation of Colorado River facilities and management of the Colorado River are scheduled to expire at the end of 2026. These include the 2007 Colorado River Interim Guidelines for Lower Basin Shortages and Coordinated Operations for Lake Powell and Lake Mead (2007 Interim Guidelines), the 2019 Drought Contingency Plans, as well as international agreements between the United States and Mexico pursuant to the United States-Mexico Treaty on Utilization of Waters of the Colorado and Tijuana Rivers and of the Rio Grande (1944 Water Treaty).		Several reservoir and water management decisional documents and agreements that govern the operation of Colorado River facilities and management of the Colorado River are scheduled to expire at the end of 2026. These include the 2007 Colorado River Interim Guidelines for Lower Basin Shortages and Coordinated Operations for Lake Powell and Lake Mead (2007 Interim Guidelines), the 2019 Drought Contingency Plans, as well as international agreements between the United States and Mexico pursuant to the United States-Mexico Treaty on Utilization of Waters of the Colorado and Tijuana Rivers and of the Rio Grande (1944 Water Treaty).

← Older revision		Revision as of 20:52, 21 August 2026
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	</table>		</table>

		+	[[File:WaterBalance.PNG\|center\|500px]]

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