THE 2013 STATEMAP MAP PRODUCTS ARE NOW AVAILABLE
Cross-section A to B from the Open File Map OFM-13-3.
The Iowa Geological & Water Survey (IGWS) just completed twelve Open File Maps (OFM) for the 2013 STATEMAP mapping program. The U.S. Geological Survey program offers a 50% match to state funding for geologic mapping by state geological surveys through a competitive grant process. IGWS is now begining work on 2014 mapping in Cerro Gordo and Mitchell counties, which encompass portions of the Shell Rock and
Cedar River watersheds.
GROUNDWATER AVAILABILITY MODELING OF THE MISSISSIPPIAN AQUIFER NORTH-CENTRAL IOWA
Simulated (modeled) potentiometric surface of the Mississippian Aquifer in North-Central Iowa.
The Iowa Geological & Water Survey just completed an investigation of the hydrogeology of the Mississippian Aquifer in north-central Iowa. The investigation involved the construction of a numerical groundwater flow model using three hydrogeologic layers. Based on the modeling results, a conservative estimate of 50% of the groundwater to river recharge might be available for future water use. Using both precipitation recharge and available river recharge, an additional 6.3 billion gallons per year (bgy) of groundwater is available for development and beneficial use (5.3 bgy from converted river recharge and 1 bgy from available precipitation recharge).
Additional recent news articles and publications from the Iowa Geological & Water Survey are also available in digital format.