| County : Marshall | |||
| County Characteristics | Area (ac)* | Percentage | |
| Major Watersheds | Snake River | 465,163 | 40.0 |
| Thief River | 381,710 | 32.9 | |
| Tamarac River | 247,730 | 21.3 | |
| Grand Marais Creek | 49,808 | 4.3 | |
| Roseau River | 10,050 | 0.9 | |
| Two Rivers | 7,398 | 0.6 | |
| Red Lake River | 30 | 0.0 | |
| Agroecoregions | Somewhat Poorly Drained Lake Sediments | 45,605 | 3.9 |
| Red Lakes Loams | 4,211 | 0.4 | |
| Peatlands | 37,577 | 3.2 | |
| Very Poorly Drained Lake Sediments | 594,644 | 51.2 | |
| Inter-Beach Sand Bars | 300,859 | 25.9 | |
| Swelling Clay Lake Sediments | 178,994 | 15.4 | |
| Slope Steepness | 0-2 % | 1,060,506 | 91.3 |
| 2-6 % | 87,659 | 7.5 | |
| Water | 13,724 | 1.2 | |
| Drainage | Poorly Drained | 554,544 | 47.7 |
| Poor improved by tiling | 444,575 | 38.3 | |
| Well Drained | 148,317 | 12.8 | |
| Water | 13,724 | 1.2 | |
| No rating | 729 | 0.1 | |
| Proximity | Island Shoreline | 1,670 | 0.1 |
| Lake Shoreline | 21,740 | 1.9 | |
| Permanent River | 54,698 | 4.7 | |
| Intermittent River | 61,308 | 5.3 | |
| Drainage Ditches | 173,200 | 14.9 | |
| Water | 13,724 | 1.2 | |
| Land Locked | 835,549 | 71.9 | |
| Geomorphology | Agassiz Lacustrine Plain, Red River Valley Area | 821,123 | 70.7 |
| Agassiz Lacustrine Plain, Inter-Beach Area | 253,374 | 21.8 | |
| Agassiz Lacustrine Plain, Beltrami Island Area | 45,605 | 3.9 | |
| Agassiz Peatlands | 37,577 | 3.2 | |
| Agassiz Lacustrine Plain, Red Lake Area | 4,211 | 0.4 | |
| Water Erosion | Slight | 172,273 | 14.8 |
| Moderate | 946,134 | 81.4 | |
| High | 43,482 | 3.7 | |
| Wind Erosion Group | Very Severe | 366,669 | 31.6 |
| Severe | 542,231 | 46.7 | |
| High | 154,252 | 13.3 | |
| Moderate | 83,772 | 7.2 | |
| No Data | 14,964 | 1.3 | |
| Precipitation | Between 18-20 inches | 658,529 | 56.7 |
| Between 20-22 inches | 503,123 | 43.3 | |
| No rating | 237 | 0.0 | |
| Growing Degree Days | 1500-1750 Degree Days | 425,343 | 36.6 |
| 1750-2000 Degree Days | 549,785 | 47.3 | |
| 2000-2250 Degree Days | 186,523 | 16.1 | |
| No rating | 237 | 0.0 | |
| * Expressed as acres or percent for the County area | |||