U.S. 2002 Major Land Resource Area Map

U.S. 2002 Major Land Resource Area Map

The U.S. 2002 Major Land Resource Area (MLRA) map is a polygon coverage of the land resource regions and MLRAs of the conterminous United States (http://www.nrcs.usda.gov/technical/land/mlra/) and is available for the entire U.S. portion of the Plains CO₂ Reduction study area. The MLRAs are subregions of the land resource regions and comprise smaller homogeneous areas. The scale of this coverage is 1:2,000,000 and was developed and characterized by the Natural Resources Conservation Service. It represents land resource regions characterized by a particular pattern of soils, climate, water resources, and land uses.

Major Land Resource Areas Legend
More detailed descriptions can be found through http://www.soilinfo.psu.edu/soil_lrr/

32 Northern Intermountain Desertic Basins

43 Northern Rocky Mountains

44 Northern Rocky Mountain Valleys

46 Northern Rocky Mountain Foothills

52 Brown Glaciated Plain

53A Northern Dark Brown Glaciated Plains

53B Central Dark Brown Glaciated Plains

53C Southern Dark Brown Glaciated Plains

54 Rolling Soft Shale Plain

55A Northern Black Glaciated Plains

55B Central Black Glaciated Plains

55C Southern Black Glaciated Plains

56 Red River Valley of the North

57 Northern Minnesota Gray Drift

58A Northern Rolling High Plains; Northern Part

58B Northern Rolling High Plains; Southern Part

58C Northern Rolling High Plains; Northeastern Part

58D Northern Rolling High Plains; Eastern Part

60A Pierre Shale Plains and Badlands

60B Pierre Shale Plains; Northern Part

61 Black Hills Foot Slopes

62 Black Hills

63A Northern Rolling Pierre Shale Plains

63B Southern Rolling Pierre Shale Plains

64 Mixed Sandy and Silty Tableland

65 Nebraska Sand Hills

66 Dakota Nebraska Eroded Tableland

67 Central High Plains

71 Central Nebraska Loess Hills

72 Central High Tableland

73 Rolling Plains and Breaks

75 Central Loess Plains

88 Northern Minnesota Glacial Lake Basins

90 Central Wisconsin and Minnesota Thin Loess and Till

91 Wisconsin and Minnesota Sandy Outwash

92 Superior Lake Plain

102A Rolling Till Prairie

102B Till Plains

102C Loess Uplands

103 Central Iowa and Minnesota Till Prairies

104 Eastern Iowa and Minnesota Till Prairies

105 Northern Mississippi Valley Loess Hills

106 Nebraska and Kansas Loess Drift Hills

107 Iowa and Missouri Deep Loess Hills

108 Illinois and Iowa Deep Loess and Drift

109 Iowa and Missouri Heavy Till Plain

110 Northern Illinois and Indiana Heavy Till Plain

112 Cherokee Prairie

113 Central Claypan Areas

115B Central Mississippi Valley Wooded Slopes Western Part

116A Ozark Highland

116B Ozark Border

131 Southern Mississippi Valley Alluvium

134 Southern Mississippi Valley Silty Uplands

32	Northern Intermountain Desertic Basins
43	Northern Rocky Mountains
44	Northern Rocky Mountain Valleys
46	Northern Rocky Mountain Foothills
52	Brown Glaciated Plain
53A	Northern Dark Brown Glaciated Plains
53B	Central Dark Brown Glaciated Plains
53C	Southern Dark Brown Glaciated Plains
54	Rolling Soft Shale Plain
55A	Northern Black Glaciated Plains
55B	Central Black Glaciated Plains
55C	Southern Black Glaciated Plains
56	Red River Valley of the North
57	Northern Minnesota Gray Drift
58A	Northern Rolling High Plains; Northern Part
58B	Northern Rolling High Plains; Southern Part
58C	Northern Rolling High Plains; Northeastern Part
58D	Northern Rolling High Plains; Eastern Part
60A	Pierre Shale Plains and Badlands
60B	Pierre Shale Plains; Northern Part
61	Black Hills Foot Slopes
62	Black Hills
63A	Northern Rolling Pierre Shale Plains
63B	Southern Rolling Pierre Shale Plains
64	Mixed Sandy and Silty Tableland
65	Nebraska Sand Hills
66	Dakota Nebraska Eroded Tableland
67	Central High Plains
71	Central Nebraska Loess Hills
72	Central High Tableland
73	Rolling Plains and Breaks
75	Central Loess Plains
88	Northern Minnesota Glacial Lake Basins
90	Central Wisconsin and Minnesota Thin Loess and Till
91	Wisconsin and Minnesota Sandy Outwash
92	Superior Lake Plain
102A	Rolling Till Prairie
102B	Till Plains
102C	Loess Uplands
103	Central Iowa and Minnesota Till Prairies
104	Eastern Iowa and Minnesota Till Prairies
105	Northern Mississippi Valley Loess Hills
106	Nebraska and Kansas Loess Drift Hills
107	Iowa and Missouri Deep Loess Hills
108	Illinois and Iowa Deep Loess and Drift
109	Iowa and Missouri Heavy Till Plain
110	Northern Illinois and Indiana Heavy Till Plain
112	Cherokee Prairie
113	Central Claypan Areas
115B	Central Mississippi Valley Wooded Slopes Western Part
116A	Ozark Highland
116B	Ozark Border
131	Southern Mississippi Valley Alluvium
134	Southern Mississippi Valley Silty Uplands