Aquifer Characterization and Drought Assessment, Floyd River Alluvial Aquifer

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The groundwater flow model for the Floyd River aquifer near Sheldon was used to simulate a severe drought. Water level data during the summer of 2012 were used to help calibrate the model. Based on the mass balance calculations in the model, the percentage of water production supplied by the Floyd River (induced recharge) increased from 54 percent during normal rainfall conditions to 68 percent during a severe drought. The increase in induced recharge allows the City of Sheldon public wells to maintain water production during prolonged dry periods. Limitations in water production exist when streamflow along the Floyd River drops below 1.58 cubic feet per second.

Document Type: 

  • Report


  • critical issues, database publication, water availability, drought, iowa