Environmental Chemistry (Flokstra) - CHEM 3159

Iowa Department of Natural Resources. Includes searchable database of sites, risk calculator, statewide standards, relevant laws from Iowa Code, and more.

Create customized maps using USDA data.

PDF downloads by county.

U.S. Office of Environmental Management

Basic soil and geographic information, including maps & soil surveys.

Iowa State University Extension. Download database & select 2nd tab at the bottom of the spreadsheet.

"Continuous Real-Time Water Quality of Surface Water in the U.S." Search by state to see water temperature, pH, nitrate levels, etc. Links to real-time maps by state.

U.S. Geological Survey

U.S. Office of Environmental Management

Iowa Department of Natural Resources

U.S. Geological Survey

Iowa Department of Natural Resources

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