Rainfall Data

The District has installed and maintains 357 automated precipitation gages throughout Maricopa and surrounding counties which measure the amounts and timing of rainfall in real-time. These data are transmitted to the District via radio and stored on the base computers. Data and informational products, real-time and historic, may be viewed using the tools on this page in different formats such as tables, maps and plots.

"Right Now" Rainfall Maps

Rainfall Reports

Daily Precipitation Report
Maximum / Daily, monthly and annual precipitation totals for all rain gages, sorted by amount, ending at 5 a.m. each day.

Precipitation Report for All FCDMC Rain Gages
This report contains 6-hour and 24-hour totals at all rain gages, sorted by jurisdiction, updated every 30 minutes.

Rainfall Values at All FCDMC Rain Gages
15-min., 1-hr., 3-hr., 6-hr., 24-hr & 72-hr rainfall values at all rain gages, updated every 15 minutes. Create a historic version of this report.

Historic Precipitation Data

Daily Totals at All Precipitation Gages

View daily totals at all precipitation gages by month back to October 2010. See our Publications section for prior daily total summaries.

Interactive Data Map

Interactive Data Map website

Past Contoured Rainfall Maps

View past contoured rainfall maps by storm date.

Annual (& Monsoon) Rainfall Total Maps

Find annual rainfall total maps by water-year.

Maximum Period Recorded Rainfall Amounts

View the maximum period recorded rainfall amounts at stations with 10 or more years of record. Select one of the following time periods.

Rainfall History Documents

View Summary Statistics and Annual Rainfall Records for Each Rain Gage.

NOAA Design Rainfall Data

Find NOAA Design Rainfall Data.

Compiled Data Products

Download all (356) Rainfall History Documents (.xlsx) in one .zip file (100 MB, data through 09/30/2022)

Compilation of Severe Rainfall Events at ALERT Stations in Excel 2010 Format (622 KB, updated 03/02/2023).

Additional Information

Create a Rainfall Plot