A 25-site rain gauge network was established in late August 1992 with approximately 5 miles between gauges. The network was reduced to 20 sites in September 1996. Each gauge records precipitation every 15-minutes year-round. The network gauges are currently maintained, analyzed, and reported monthly by Erin Bauer from the Illinois State Water Survey. Each month, hourly, daily, and monthly rainfall amounts are computed from the 15-minute data. This information is summarized and reported monthly to interested stakeholders via the IVWA Monthly Precipitation Report.
Monthly Precipitation Reports