Colorado River: Comparing the 6-State and California Proposals
Six of the seven Colorado River water using states (Arizona, Colorado, Nevada, New Mexico, Utah and Wyoming) have jointly submitted a modeling framework to address declining reservoir levels on the Colorado River. California has submitted a separate proposal. This tool shows how these two alternatives (six-state and California) would impact Colorado River water users in Central Arizona. This technical tool is intended to help water managers, decision-makers and community members better understand the ongoing discussion and options for protecting the Colorado River System.
Central Arizona Colorado River Shortage Impact Analysis Tool
Many Central Arizona cities, tribes and industries rely on Colorado River water delivered by the Central Arizona Project (CAP) as part of their water supply. These water users face the prospect of cuts as drought, over-allocation and climate change reduce Colorado River supplies. However, the cuts will not impact CAP water users uniformly because there is a priority pool system for CAP water supplies. Lower priority pools are cut first.
This tool shows how individual CAP water users’ access to Colorado River water supply portfolios will be impacted by increasingly severe cuts. Information about how various water users stand to be impacted by cuts can assist water planners and decision makers in deciding what steps to take in response to declining supplies and can help members of the public understand how different communities may be impacted by shortage.