| Irrigation Systems | 76,905 | $1,613,020,481 |
| Grazing Management | 156,561 | $1,320,742,632 |
| Water Control & Management | 158,621 | $1,180,681,456 |
| Crop Management | 143,579 | $1,050,628,288 |
| Livestock Confinement Systems | 30,002 | $1,043,602,887 |
| Livestock Systems | 38,075 | $291,150,895 |
| Land Treatment or Reclamation | 42,158 | $262,075,005 |
| Forest Management | 41,489 | $221,038,398 |
| Pest Management | 42,245 | $166,989,435 |
| Conservation Buffers | 61,031 | $128,598,923 |
| Air Quality | 5,251 | $119,736,094 |
| Farm & Ranch Operation Facilities | 12,927 | $109,645,842 |
| Stream Corridor Management | 8,727 | $99,177,340 |
| Habitat Management | 13,260 | $86,132,785 |
| Energy | 4,821 | $79,313,788 |
| Miscellaneous | 14,443 | $77,222,462 |
| Water Management | 22,405 | $58,725,765 |
| Technical Assistance & Assessment | 11,335 | $33,956,864 |
| Invasive & Noxious Species | 5,336 | $11,967,682 |
| Aquaculture | 131 | $1,742,330 |
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Fooling Ourselves
Boondoggle:
Iowa's Low Hanging Fruit:
Washout Revisited:
Broken Stream Banks:
Pumped up: