| Water Quality - Nutrients in Surface water | $84,922 |
| Water Quality - Nutrients in Groundwater | $54,328 |
| Water Quality - Petroleum, Heavy Metals and Other Pollutants Transported to Surface Water | $45,428 |
| Water Quality - Elevated Water Temperature | $24,657 |
| Water Quality - Excess Pathogens and Chemicals from Manure, Bio-solids or Compost Applications in Surface Water | $17,553 |
| Water Quality - Excess Pathogens and Chemicals from Manure, Bio-solids or Compost Applications in Groundwater | $11,612 |
| Water Quality - Salts in Surface Water | $11,599 |
| Water Quality - Petroleum, Heavy Metals and Other Pollutants Transported to Groundwater | $11,550 |
| Water Quality - Salts in Groundwater | $3,372 |
Fooling Ourselves
Boondoggle:
Iowa's Low Hanging Fruit:
Washout Revisited:
Broken Stream Banks:
Pumped up: