Winter Storms Impact Arizona's Water Supply

Snowpack measurements help predict reservoir levels and water conservation needs.

Published on Feb. 24, 2026

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As winter storms move through Arizona, officials are closely monitoring the snowpack to determine how much water will flow into the Valley's reservoirs. This data helps the Salt River Project (SRP) decide if water conservation measures need to be implemented.

Why it matters

Arizona's water supply is heavily dependent on snowpack in the mountains, which melts and replenishes the state's reservoirs. Accurately forecasting water availability is crucial for managing the region's limited water resources and ensuring adequate supplies for residential, agricultural, and industrial use.

The details

By measuring the depth and water content of the snowpack, hydrologists can estimate how much runoff will make its way into the reservoirs that serve the Phoenix metropolitan area. This information allows SRP, the local water management authority, to plan ahead and determine if water conservation efforts will be necessary in the coming months.

  • Winter storms have been moving through Arizona in recent weeks.

The players

Salt River Project (SRP)

The local water management authority responsible for the Phoenix metropolitan area's water supply and distribution.

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What’s next

SRP will continue to monitor the snowpack levels and use the data to forecast reservoir levels and determine if water conservation measures need to be implemented in the coming months.

The takeaway

Careful monitoring of Arizona's snowpack is essential for managing the state's limited water resources and ensuring adequate supplies for the growing Phoenix metropolitan area.