| Watershed : Otter Tail River | |||
| Watershed Characteristics | Area (ac)* | Percentage | |
| Agroecoregions | Steep Dryer Moraine | 760,989 | 60.9 |
| Steeper Till | 257,594 | 20.6 | |
| Dryer Till | 126,836 | 10.2 | |
| Poorly Drained Lake Sediments | 63,905 | 5.1 | |
| Inter-Beach Sand Bars | 27,176 | 2.2 | |
| Very Poorly Drained Lake Sediments | 12,021 | 1.0 | |
| Swelling Clay Lake Sediments | 1,181 | 0.1 | |
| Counties | Ottertail | 788,365 | 63.1 |
| Becker | 349,815 | 28.0 | |
| Wilkin | 97,024 | 7.8 | |
| Clearwater | 13,141 | 1.1 | |
| Clay | 1,273 | 0.1 | |
| Mahnomen | 87 | 0.0 | |
| Slope Steepness | 0-2 % | 167,781 | 13.4 |
| 2-6 % | 253,710 | 20.3 | |
| 2-12 % | 197,510 | 15.8 | |
| 6-12 % | 82,660 | 6.6 | |
| 6-45 % | 367,285 | 29.4 | |
| 12-45 % | 110,807 | 8.9 | |
| Water | 69,952 | 5.6 | |
| Drainage | Well Drained | 735,884 | 58.9 |
| Poorly Drained | 219,279 | 17.6 | |
| Poor Improved by Tiling | 131,877 | 10.6 | |
| Water | 69,952 | 5.6 | |
| No Rating | 92,712 | 7.4 | |
| Proximity | Land Locked | 778,167 | 62.3 |
| Lake Shoreline | 268,059 | 21.5 | |
| Permanent River | 56,759 | 4.5 | |
| Intermittent River | 52,262 | 4.2 | |
| Drainage Ditches | 21,080 | 1.7 | |
| Inland Shoreline | 3,425 | 0.3 | |
| Water | 69,952 | 5.6 | |
| Geomorphology | Detroit Lakes Pitted Outwash Plain | 413,905 | 33.1 |
| Alexandria Moraine Complex | 345,088 | 27.6 | |
| Itasca Moraine Complex, Rolling | 153,239 | 12.3 | |
| Fergus Falls (Young Gray Drift) Till Plain | 126,836 | 10.2 | |
| Agassiz Lacustrine Plain, Red River Valley Area | 104,284 | 8.3 | |
| Henning Till Plain | 103,804 | 8.3 | |
| Park Rapids-Staples Outwash Plain | 1,997 | 0.2 | |
| Wadena Drumlin Area | 551 | 0.0 | |
| Water Erosion | Slight | 71,501 | 5.7 |
| Moderate | 412,741 | 33.0 | |
| High | 90,604 | 7.3 | |
| Severe | 474,914 | 38.0 | |
| Extreme | 199,943 | 16.0 | |
| Wind Erosion Group | Very Severe | 128,855 | 10.3 |
| Severe | 823,950 | 65.9 | |
| High | 29,143 | 2.3 | |
| Moderate | 195,683 | 15.7 | |
| No Data | 72,072 | 5.8 | |
| Precipitation | Between 20-22 inches | 112,492 | 9.0 |
| Between 22-24 inches | 563,368 | 45.1 | |
| Between 24-26 inches | 447,827 | 35.8 | |
| Between 26-28 inches | 126,016 | 10.1 | |
| Growing Degree Days | 1500-1750 Degree Days | 71,666 | 5.7 |
| 1750-2000 Degree Days | 348,216 | 27.9 | |
| 2000-2250 Degree Days | 253,495 | 20.3 | |
| 2250-2500 Degree Days | 490,439 | 39.2 | |
| 2500-2750 Degree Days | 85,887 | 6.9 | |
| * Expressed as acres or percent for major watershed area in the Red River of the North basin | |||