San Carlos Reservoir, AZ

As of 2026-10-13, San Carlos Reservoir sits at 2420.51 ft. Over the past 30 days the level has risen 20.65 ft.

The most recent reading at San Carlos Reservoir is 2420.51 ft (2026-10-13), sourced from the U.S. Geological Survey. Readings on this page refresh automatically as the agency publishes new data.

Readings for San Carlos Reservoir run from 2394.76 ft to 2420.51 ft over the 176 days on file, which begin 2026-04-21. That window is shorter than a year, so neither end is a record for the lake. A lake's range includes a full seasonal cycle, and this gauge has not yet published one.

Reservoir levels move for four main reasons: rainfall and runoff into the basin, releases through the dam for downstream water supply, power generation or flood control, evaporation during hot months, and seasonal drawdown schedules set by the operating agency. San Carlos Reservoir has risen 20.65 ft over the past 30 days. For the operational reason on any given week, check the U.S. Geological Survey directly.

Year-over-year comparison is not available for San Carlos Reservoir yet. The published series on this page covers 176 days, from 2394.76 ft to 2420.51 ft. That is not long enough to describe the lake's historical range.