| Cover type | Percent change on Hanford Site | Percent change in Ecoregion |
| Bunchgrass steppe | 162% increase | 58% decrease |
| Idaho fescue steppe | No change | 72% decrease |
| Bitterbrush steppe | 1% decrease | 34% decrease |
| Big sagebrush steppe | 7% decrease | 59% decrease |
| Juniper/sagebrush steppe | No change | Minus 1% decrease |
| Water | No change | No change |