| Watershed : Sandhill River | |||
| Watershed Characteristics | Area (ac)* | Percentage | |
| Agroecoregions | Swelling Clay Lake Sediments | 96,431 | 26.9 |
| Dryer Till | 73,836 | 20.6 | |
| Inter-Beach Sand Bars | 62,329 | 17.4 | |
| Very Poorly Drained Lake Sediments | 50,384 | 14.1 | |
| Mahnomen Lake Sediments | 38,723 | 10.8 | |
| Steep Dryer Moraine | 36,736 | 10.3 | |
| Poorly Drained Lake Sediments | 22 | 0.0 | |
| Counties | Polk | 297,738 | 83.1 |
| Norman | 38,911 | 10.9 | |
| Mahnomen | 21,812 | 6.1 | |
| Slope Steepness | 0-2 % | 193,936 | 54.1 |
| 2-6 % | 126,874 | 35.4 | |
| 6-12 % | 18,925 | 5.3 | |
| 6-45 % | 18,609 | 5.2 | |
| Water | 116 | 0.0 | |
| Drainage | Well Drained | 156,474 | 43.7 |
| Poorly Drained | 147,324 | 41.1 | |
| Poor Improved by Tiling | 47,060 | 13.1 | |
| Water | 116 | 0.0 | |
| No Rating | 7,487 | 2.1 | |
| Proximity | Land Locked | 208,239 | 58.1 |
| Drainage Ditches | 56,225 | 15.7 | |
| Intermittent River | 55,657 | 15.5 | |
| Permanent River | 22,592 | 6.3 | |
| Lake Shoreline | 15,632 | 4.4 | |
| Water | 116 | 0.0 | |
| Geomorphology | Agassiz Lacustrine Plain, Red River Valley Area | 168,090 | 46.9 |
| Fosston Till Plain, Loamy | 73,836 | 20.6 | |
| Agassiz Lacustrine Plain, Inter-Beach Area | 41,075 | 11.5 | |
| Mahnomen Lacustrine Plain | 38,723 | 10.8 | |
| Erskine Moraine, Loamy | 20,171 | 5.6 | |
| Alexandria Moraine Complex | 16,566 | 4.6 | |
| Water Erosion | Moderate | 273,231 | 76.2 |
| High | 34,747 | 9.7 | |
| Severe | 50,483 | 14.1 | |
| Wind Erosion Group | Very Severe | 30,186 | 8.4 |
| Severe | 183,000 | 51.1 | |
| High | 86,322 | 24.1 | |
| Moderate | 58,953 | 16.5 | |
| Precipitation | Between 18-20 inches | 95,949 | 26.8 |
| Between 20-22 inches | 121,781 | 34.0 | |
| Between 22-24 inches | 140,732 | 39.2 | |
| Growing Degree Days | 1750-2000 Degree Days | 20,887 | 5.8 |
| 2000-2250 Degree Days | 131,986 | 36.8 | |
| 2250-2500 Degree Days | 64,856 | 18.1 | |
| 2500-2750 Degree Days | 140,732 | 39.2 | |
| * Expressed as acres or percent for major watershed area in the Red River of the North basin | |||