This page compares rainfall for the one, two and three years, and river flow over the last year and last 10 years, to normal levels. Rainfall maps are updated monthly; river flows are updated weekly.

Rainfall 1-Year
Rainfall 2-Year
Rainfall 3-Year
Seasonal Rainfall

Rainfall map legend

River Flows

Please visit the United States Geological Survey National Water Dashboard to acquire river flow information and data.