Upper Colorado Region Weekly Hydrology Summary

Reservoir

Elevation 

(ft)

Live Storage 

(1000 AF)

% of Live 

Capacity

Avg Daily 

Unreg Inflow 

(cfs)

Daily Release 

(cfs)

Lake Powell 3,558.77 7,700 33% 5,892 10,427

Blue Mesa 7,485.82 545 66% 694 1,314

Flaming Gorge 6,027.01 3,154 86% 1,482 1,417

Fontenelle 6,468.57 107 32% 1,213 600

Navajo* 6,041.31 1,074 65% 700 395

Elephant Butte** 4,336.01 427 21% 350 1,010

Current as of: 4/4/2024 * Uses Modified Unregulated Inflow

** Unreg Inflow Current as of: 3/31/2024

and Observed Inflow

Reservoir

2024 April-July 

Volume

(KAF)

 (April Final 

Forecast)

2024 April-July 

% of Avg

April Final 

Forecast)

Mar Unreg 

Inflow 

Observed 

(Acre-Feet))

March Unreg 

Inflow 

Observed 

(% Average)

Lake Powell 5,700 89% 455,225 76%

Blue Mesa 600 94% 33,100 88%

Fontenelle 710 97% 50,476 89%

Flaming Gorge 960 99% 94,460 89%

Navajo* 420 67% 30,755 38%

*When the MUI is negative, it indicates the upstream storage and transbasin diversion losses are greater than the total inflow. 

Note: The NRCS site list generating the aggregate SWE values in this graphic is limited to only those sites that have been in 

operation for the entire WY 1991 - 2020 comparison period. For this reason, the percent median may vary slightly from that reported 

directly from NRCS. 

SWE (% median peak)

This hydrologic information is provided weekly to summarize the hydrologic conditions in the Upper Colorado Region. If additional 

information is required, please contact Heather Patno (hpatno@usbr.gov).

Selected Reservoir Status - Report Date: April 4, 2024

Selected Reservoir Inflows - Unregulated Forecast

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Upper Colorado Region Weekly Hydrology Summary

Month to Date Precipitation Water Year to Date Precipitation

6-10 Day Temperature 6-10 Day Precipitation

Page 2

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Upper Colorado Region Weekly Hydrology Summary

0.0

10000.0

20000.0

30000.0

40000.0

50000.0

60000.0

70000.0

80000.0

90000.0

100000.0

1-Oct 1-Nov 1-Dec 1-Jan 1-Feb 1-Mar 1-Apr 1-May 1-Jun 1-Jul 1-Aug 1-Sep 1-Oct

Unregulated Inflow (cfs)

Lake Powell Reservoir and Glen Canyon Dam

Daily Unregulated Inflow

Water Year 2024

GC Unreg Inflow WY 2023 GC Unreg Inflow WY 2024 GC Unreg Inflow 30-Year Avg (1991-2020)

3,480

3,500

3,520

3,540

3,560

3,580

3,600

5000.0

10000.0

15000.0

20000.0

25000.0

30000.0

35000.0

40000.0

45000.0

1-Oct 1-Nov 1-Dec 1-Jan 1-Feb 1-Mar 1-Apr 1-May 1-Jun 1-Jul 1-Aug 1-Sep

Elevation (feet)

Release (cfs)

Lake Powell Reservoir and Glen Canyon Dam

Daily Total Release and Elevation

Water Year 2024

GC Release WY 2023 GC Release WY 2024 GC Elev WY 2024 GC Elev WY 2023

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Upper Colorado Region Weekly Hydrology Summary

0.0

1000.0

2000.0

3000.0

4000.0

5000.0

6000.0

7000.0

8000.0

1-Oct 1-Nov 1-Dec 1-Jan 1-Feb 1-Mar 1-Apr 1-May 1-Jun 1-Jul 1-Aug 1-Sep

Unregulated Inflow (cfs)

Blue Mesa Dam and Reservoir 

Unregulated Inflow Daily Average

Water Year 2024

BM Unreg Inflow WY 2023 BM Unreg Inflow WY 2024 BM Unreg Inflow 30-Year Avg (1991-2020)

7,400

7,420

7,440

7,460

7,480

7,500

7,520

0.0

1000.0

2000.0

3000.0

4000.0

5000.0

6000.0

7000.0

8000.0

1-Oct 1-Nov 1-Dec 1-Jan 1-Feb 1-Mar 1-Apr 1-May 1-Jun 1-Jul 1-Aug 1-Sep

Elevation (feet)

Release (cfs)

Crystal Dam and Reservoir Daily Total Release and 

Blue Mesa Dam and Reservoir Elevation

Water Year 2024

CY Release WY 2023 CY Release WY 2024 BM Elev WY 2024 BM Elev WY 2023

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Upper Colorado Region Weekly Hydrology Summary

0.0

2000.0

4000.0

6000.0

8000.0

10000.0

12000.0

14000.0

1-Oct 1-Nov 1-Dec 1-Jan 1-Feb 1-Mar 1-Apr 1-May 1-Jun 1-Jul 1-Aug 1-Sep

Unregulated Inflow (cfs)

Flaming Gorge Dam and Reservoir 

Unregulated Inflow Daily Average

Water Year 2024

FG Unreg Inflow WY 2023 FG Unreg Inflow WY 2024 FG Unreg Inflow 30-Year Avg (1991-2020)

5,990

5,995

6,000

6,005

6,010

6,015

6,020

6,025

6,030

6,035

500.0

1500.0

2500.0

3500.0

4500.0

5500.0

6500.0

7500.0

8500.0

9500.0

1-Oct 1-Nov 1-Dec 1-Jan 1-Feb 1-Mar 1-Apr 1-May 1-Jun 1-Jul 1-Aug 1-Sep

Elevation (feet)

Release (cfs)

Flaming Gorge Dam

Daily Total Release and Elevation

Water Year 2024

FG Release WY 2023 FG Release WY 2024 FG Elev WY 2024 FG Elev WY 2023

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Upper Colorado Region Weekly Hydrology Summary

0.0

2000.0

4000.0

6000.0

8000.0

10000.0

12000.0

1-Oct 1-Nov 1-Dec 1-Jan 1-Feb 1-Mar 1-Apr 1-May 1-Jun 1-Jul 1-Aug 1-Sep

Unregulated Inflow (cfs)

Navajo Dam and Reservoir 

Unregulated Inflow Daily Average

Water Year 2024

NV Mod Unreg Inflow WY 2023 NV Mod Unreg Inflow WY 2024 NV Mod Unreg Inflow 30-Year Avg(1991-2020)

6,010

6,020

6,030

6,040

6,050

6,060

6,070

0.0

500.0

1000.0

1500.0

2000.0

2500.0

3000.0

3500.0

4000.0

4500.0

5000.0

1-Oct 1-Nov 1-Dec 1-Jan 1-Feb 1-Mar 1-Apr 1-May 1-Jun 1-Jul 1-Aug 1-Sep

Elevation (feet)

Release (cfs)

Navajo Dam

Daily Total Release and Elevation

Water Year 2024

NV Release WY 2023 NV Release WY 2024 NV Elev WY 2024 NV Elev WY 2023

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