| Water Quality - Elevated Water Temperature | $608,290 |
| Water Quality - Excessive Sediment in Surface Water | $167,028 |
| Water Quality - Nutrients in Surface water | $104,879 |
| Water Quality - Excess Pathogens and Chemicals from Manure, Bio-solids or Compost Applications in Surface Water | $50,277 |
| Water Quality - Nutrients in Groundwater | $49,347 |
| Water Quality - Petroleum, Heavy Metals and Other Pollutants Transported to Surface Water | $48,364 |
| Water Quality - Pesticides in Surface Water | $40,830 |
| Water Quality - Pesticides in Groundwater | $35,837 |
| Water Quality - Salts in Surface Water | $28,118 |
| Water Quality - Excess Pathogens and Chemicals from Manure, Bio-solids or Compost Applications in Groundwater | $16,594 |
| Water Quality - Petroleum, Heavy Metals and Other Pollutants Transported to Groundwater | $14,261 |
| Water Quality - Salts in Groundwater | $3,851 |
Fooling Ourselves
Boondoggle:
Iowa's Low Hanging Fruit:
Washout Revisited:
Broken Stream Banks:
Pumped up: