State water summary report

Staff Writer
Story City Herald

September brought an additional inch over normal rainfall to Iowa. Rain was unseasonable heavy across the southern third of the state during the first half of the month. Year-to-date precipitation has been greater than normal across the vast majority of the state, with 2014 ranking as the 12th wettest year among 142 years of records.

Meanwhile, year-to-date statewide average temperature has been the lowest since 1979, resulting in unusually low evaporation. Iowa subsoil moisture as of Oct. 5, as surveyed by the USDA National Agricultural Statistics Service, has been greater only twice — in 2007 and 2010 — among the past 20 years.

The October issue of Water Summary Update discusses how geology, hydrogeology, pumping records and computer models are used in the state’s plan for sustaining groundwater during drought years.

For a thorough review of Iowa’s water resource trends, go to www.iowadnr.gov/watersummaryupdate.