| Water Quality - Excessive Sediment in Surface Water | $178,556 |
| Water Quality - Nutrients in Surface water | $134,221 |
| Water Quality - Petroleum, Heavy Metals and Other Pollutants Transported to Surface Water | $53,288 |
| Water Quality - Excess Pathogens and Chemicals from Manure, Bio-solids or Compost Applications in Surface Water | $38,357 |
| Water Quality - Pesticides in Groundwater | $30,529 |
| Water Quality - Salts in Surface Water | $28,952 |
| Water Quality - Elevated Water Temperature | $22,161 |
| Water Quality - Nutrients in Groundwater | $16,944 |
| Water Quality - Excess Pathogens and Chemicals from Manure, Bio-solids or Compost Applications in Groundwater | $16,136 |
| Water Quality - Petroleum, Heavy Metals and Other Pollutants Transported to Groundwater | $8,762 |
| Water Quality - Pesticides in Surface Water | $8,748 |
| Water Quality - Salts in Groundwater | $3,199 |
Fooling Ourselves
Boondoggle:
Iowa's Low Hanging Fruit:
Washout Revisited:
Broken Stream Banks:
Pumped up: