USDA SSURGO COUNTY SOIL REFERENCE

Lake County, Indiana Soil Summary

This page summarizes USDA SSURGO mapped soil information for Lake County, Indiana.

Mapped Land Coverage
80.5%322,852.5 mapped acres of 401,038.73 Census land acres

Coverage measures mapped SSURGO intersection with Census land geometry. It does not mean that every parcel or point has complete soil information.

Soil at a Glance

Largest mapped soil unit
Cook Inlet Mountains-Boreal Alpine-Barren Mountains
Symbol: E23M73.22% of mapped area
Largest estimated component
Water
14,665.57 acres (4.54% of mapped area)
Mapped units & components
15 soil units • 15 component series
Distinct SSURGO map units & series
Dominant drainage class
Well drained
Highest acreage drainage class
Dominant hydrologic group
Group D
Runoff potential classification
Weighted average slope
18.12%
Terrain slope analysis
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County summaries provide regional context across mapped soil units. Address lookup combines available public datasets for the Census-matched location.

Mapped SSURGO Soil Units

Largest mapped soil units in Lake County ranked by intersected vector acreage
SymbolMap Unit NameMapped Acres% of Mapped Area
E23M7Cook Inlet Mountains-Boreal Alpine-Barren Mountains10,400.033.22%
E28RCInterior Alaska Mountains-Boreal Alpine-Barren Mountains9,570.12.96%
E28GP6Interior Alaska Mountains-Boreal Upland and Subalpine-Glaciated Plains and Hills, Ash Influenced6,413.971.99%
E23M4Cook Inlet Mountains-Boreal Alpine-Mountains6,153.691.91%
E28MT2Interior Alaska Mountains-Boreal Upland and Subalpine-Mountain Valleys, Ash Influenced5,923.121.83%
E28MT1Interior Alaska Mountains-Boreal Subalpine and Alpine-Rounded Mountains, Ash Influenced5,440.61.69%
WWater4,242.251.31%
E24WCook Inlet Lowlands-Boreal Water, Saline3,661.511.13%
F35CEveleth, bouldery-Conic, bouldery-Aquepts, rubbly complex, 0 to 18 percent slopes, very rocky3,008.690.93%
538Raz-Brace complex, high precipitation, 2 to 20 percent slopes2,583.90.8%
E24F1Cook Inlet Lowlands-Boreal Lowland-Flood Plains, Terraces, and Fans2,546.610.79%
E23M1Cook Inlet Mountains-Boreal Subalpine and Alpine-Rounded Mountains2,207.80.68%
F175AGreenwood-Greenwood, ponded complex, 0 to 1 percent slopes1,809.210.56%
539Raz-Brace complex, low precipitation, 2 to 20 percent slopes1,802.070.56%
E28GP5Interior Alaska Mountains-Boreal Alpine-Glaciated Plains and Hills1,785.940.55%

Estimated Soil Components

Component acreage estimated from SSURGO component percentages
ComponentDrainage ClassHydrologic GroupEstimated Acres% of Mapped Area
WaterUnspecifiedD14,665.574.54%
E23-boreal rock outcrop and rubblelandUnspecifiedUnspecified11,534.523.57%
Rock outcropExcessively drainedD9,681.153%
E28-boreal alpine rock outcrop and rubblelandUnspecifiedUnspecified9,187.32.85%
Leighcan familyWell drained, Somewhat excessively drainedC, B4,474.151.39%
E24-boreal water, salineUnspecifiedUnspecified3,606.491.12%
RazWell drainedD2,945.80.91%
E28-boreal alpine dwarf scrub-gravelly colluvial slopesWell drainedC, B2,922.30.91%
RifleVery poorly drainedA/D2,917.030.9%
E28-boreal forest-ashy till slopesWell drainedB2,886.280.89%
GreenwoodVery poorly drainedA/D2,779.220.86%
ConicWell drainedB, D2,758.610.85%
EvelethWell drainedC2,703.220.84%
BraceWell drainedC2,230.780.69%
E23-boreal subalpine scrub/meadow mosaic-silty till slopesWell drainedA1,770.840.55%
Component acreage is estimated from SSURGO map-unit component percentages. Component values are not independently mapped polygon boundaries.

Drainage Class Distribution

Well drained40.52%
130,831.32 acres
Unknown / Unmapped20.04%
64,710.58 acres
Very poorly drained9.48%
30,618.2 acres
Somewhat excessively drained9.13%
29,463.41 acres
Poorly drained6.68%
21,556.73 acres
Somewhat poorly drained4.43%
14,314.07 acres
Moderately well drained4.38%
14,143.88 acres
Excessively drained3.56%
11,484.89 acres

Hydrologic Soil Group Distribution

Group D21.32%
68,818.71 acres
Group C17.75%
57,298.34 acres
Group Unknown / Unmapped17.35%
56,022.88 acres
Group B12.96%
41,831.27 acres
Group A11.98%
38,693.31 acres
Group A/D6.42%
20,738.31 acres
Group B/D5.76%
18,594.09 acres
Group C/D4.69%
15,126.17 acres

Hydrologic soil groups are USDA/NRCS classifications related to runoff potential under specified soil conditions. They are not a property-level flood-risk rating.

Slope Characteristics

Weighted Average Slope: 18.12%
Nearly Level (0-2%)28.19%
91,022.08 acres
Gently Sloping (2-8%)17.14%
55,344 acres
Moderately Sloping (8-15%)11.97%
38,641.06 acres
Steep (15-30%)11.87%
38,336.23 acres
Very Steep (>30%)21.23%
68,554.15 acres
Unspecified Slope7.81%
25,225.56 acres

Sources & Methodology

USDA NRCS SSURGO

Mapped soil units, components, drainage classes, hydrologic groups, and slope ratings derived from official Soil Data Access REST services.

U.S. Census Bureau TIGER/Line

County land geometry used for county-level coverage calculation.

Coverage Method

Mapped acreage is calculated from true spatial vector intersection of county land geometry and SSURGO mapped soil polygons using NAD83 / CONUS Albers Equal Area projection (EPSG:5070).