| Water Quality - Elevated Water Temperature | $283,507 |
| Water Quality - Excessive Sediment in Surface Water | $262,130 |
| Water Quality - Excess Pathogens and Chemicals from Manure, Bio-solids or Compost Applications in Surface Water | $155,866 |
| Water Quality - Nutrients in Surface water | $128,175 |
| Water Quality - Salts in Surface Water | $25,745 |
| Water Quality - Pesticides in Groundwater | $24,775 |
| Water Quality - Salts in Groundwater | $23,384 |
| Water Quality - Pesticides in Surface Water | $21,447 |
| Water Quality - Petroleum, Heavy Metals and Other Pollutants Transported to Surface Water | $20,133 |
| Water Quality - Nutrients in Groundwater | $16,106 |
| Water Quality - Excess Pathogens and Chemicals from Manure, Bio-solids or Compost Applications in Groundwater | $14,150 |
| Water Quality - Petroleum, Heavy Metals and Other Pollutants Transported to Groundwater | $12,852 |
Fooling Ourselves
Boondoggle:
Iowa's Low Hanging Fruit:
Washout Revisited:
Broken Stream Banks:
Pumped up: