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

Last Updated on 3/5/00