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A Review of Current Capabilities and Science Gaps in Water Supply Data, Modeling, and Trends for Water Availability Assessments in the Upper Colorado River Basin

Journal

WATER
Volume 14, Issue 23, Pages -

Publisher

MDPI
DOI: 10.3390/w14233813

Keywords

Colorado River; drought; water availability; hydrology; snow; water quality

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The Colorado River is a critical water resource in the southwestern United States, providing drinking water for 40 million people and irrigation water for 2.2 million hectares of land. Challenges in water availability due to extended drought and potential climate change in the Upper Colorado River Basin are highlighted. The manuscript reviews the current state of science for water availability components in the UCOL, emphasizing the importance of data, modeling, and trends.
The Colorado River is a critical water resource in the southwestern United States, supplying drinking water for 40 million people in the region and water for irrigation of 2.2 million hectares of land. Extended drought in the Upper Colorado River Basin (UCOL) and the prospect of a warmer climate in the future pose water availability challenges for those charged with managing the river. Limited water availability in the future also may negatively affect aquatic ecosystems and wildlife that depend upon them. Water availability components of special importance in the UCOL include streamflow, salinity in groundwater and surface water, groundwater levels and storage, and the role of snow in the UCOL water cycle. This manuscript provides a review of current state of the science for these UCOL water availability components with a focus on identifying gaps in data, modeling, and trends in the basin. Trends provide context for evaluations of current conditions and motivation for further investigation and modeling, models allow for investigation of processes and projections of future water availability, and data support both efforts. Information summarized in this manuscript will be valuable in planning integrated assessments of water availability in the UCOL.

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