Although precipitation for 2013 ended about normal, the first half of the year received about 7.4 inches of precipitation over normal and the second half of the year 7.7 inches under normal. Drought conditions improved dramatically during the course of the year, yet the middle portion of central Iowa remained in moderate drought by December’s end.
Shallow groundwater improved, but that was probably due to cooler temperatures rather than recharge, given the dry summer. The frost in the upper 48 inches of topsoil across the state has prevented groundwater recharge since November. However soil moisture reserves are better than a year ago.
For a more thorough review of Iowa’s water resources in 2013, go to http://www.iowadnr.gov/watersummaryupdate.
The report is prepared by the technical staff from the Iowa DNR, the Iowa Department of Agriculture and Land Stewardship, and the USGS, in collaboration with the Iowa Department of Homeland Security and Emergency Management Department.
For more information contact Tim Hall, 515-281-8169, Tim.Hall@dnr.iowa.gov