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Determining Minimum Drawdown Elevations in Lake Powell Using CRSS


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Type: Resource
Storage: The size of this resource is 87.7 MB
Created: Apr 28, 2026 at 2:26 a.m. (UTC)
Last updated: Apr 28, 2026 at 3:03 p.m. (UTC) (Metadata update)
Published date: Apr 28, 2026 at 3:03 p.m. (UTC)
DOI: 10.4211/hs.f00a71f1f6744630ad63d74cab26a8ed
Citation: See how to cite this resource
Sharing Status: Published
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Abstract

Minimum drawdown elevations have not been defined for Lake Powell, which is a gap in Lake Powell’s management that threatens hydropower generation and downstream ecosystems. To resolve this gap, we ran nine simulations using the Colorado River Simulation System (CRSS) model to evaluate four potential minimum drawdown elevation thresholds. The scenarios implemented two inflow based operational rules. An elevation of 3,500 ft is the preferred minimum drawdown elevation because it balances basin demands, ecosystem stability, and hydropower performance.

Subject Keywords

Coverage

Spatial

Coordinate System/Geographic Projection:
WGS 84 EPSG:4326
Coordinate Units:
Decimal degrees
Place/Area Name:
Colorado River Basin
Longitude
-111.4335°
Latitude
36.9924°

Temporal

Start Date:
End Date:

Content

readme.txt

The resource includes:
1. Instructions.docx file have the instructions needed to use the data stored in this resource.
2. A readme file
3. McAllister_Fager_FinalProject.docx file (The word document of the final report of the study)
4. McAllister_Fager_FinalProject.pdf file (A PDF of the final report of the study)
5. A zip file with the CRSS model directory in it. (The CRSS model used for this study along with the dmi, control and rulesets directories)
6. Presentation_MinDrawdown.pptx file (Initial presentation of the project highlight progress of the study)
7. Paleo Model Runs (Folder holds all of the excel output files for the model runs)
8. Final Project Analysis.xlsx (Excel analysis document with figures and consolidated information)


How to Cite

McAllister, A. (2026). Determining Minimum Drawdown Elevations in Lake Powell Using CRSS, HydroShare, https://doi.org/10.4211/hs.f00a71f1f6744630ad63d74cab26a8ed

This resource is shared under the Creative Commons Attribution CC BY.

http://creativecommons.org/licenses/by/4.0/
CC-BY

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