USDA SSURGO COUNTY SOIL REFERENCE

Johnson County, Kansas Soil Summary

This page summarizes USDA SSURGO mapped soil information for Johnson County, Kansas.

Mapped Land Coverage
100%307,151.68 mapped acres of 307,151.68 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
Samday-Shingle-Badland complex, 10 to 45 percent slopes
Symbol: 6842.17% of mapped area
Largest estimated component
Shingle
11,110.23 acres (3.62% 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
13.96%
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 Johnson County ranked by intersected vector acreage
SymbolMap Unit NameMapped Acres% of Mapped Area
684Samday-Shingle-Badland complex, 10 to 45 percent slopes6,668.072.17%
10Agneston-Granile-Rock outcrop association, 5 to 50 percent slopes5,833.371.9%
708Theedle-Kishona-Shingle loams, 3 to 30 percent slopes5,248.771.71%
709Theedle-Shingle loams, 3 to 30 percent slopes5,065.821.65%
14Cloud Peak gravelly silt loam, 5 to 45 percent slopes4,330.551.41%
HMHerod and Muckalee sandy loams, frequently flooded4,230.391.38%
40Tellman-Granile-Agneston association, 2 to 20 percent slopes3,853.621.25%
uHfsFHandshoe-Fedscreek-Shelocta complex, 30 to 80 percent slopes, very stony3,738.521.22%
uMgmFMatewan-Gilpin-Marrowbone complex, 12 to 80 percent slopes, very rocky3,414.81.11%
FuBFuquay loamy sand, 0 to 5 percent slopes3,231.431.05%
10119Sampsel silty clay loam, 5 to 9 percent slopes, severely eroded3,209.151.04%
SDESamday-Shingle-Badland complex, 10 to 45 percent slopes3,167.291.03%
36Rock outcrop-Teewinot-Agneston association, 5 to 35 percent slopes3,072.71%
135Shingle-Tassel complex, 2 to 30 percent slopes2,938.140.96%
DoBDothan loamy sand, 2 to 5 percent slopes2,933.70.96%

Estimated Soil Components

Component acreage estimated from SSURGO component percentages
ComponentDrainage ClassHydrologic GroupEstimated Acres% of Mapped Area
ShingleWell drainedD11,110.233.62%
Rock outcropWell drainedD10,695.293.48%
Cloud PeakWell drainedC6,865.212.24%
TheedleWell drainedC6,824.012.22%
AgnestonWell drainedC5,676.021.85%
KishonaWell drainedB4,411.571.44%
NellaWell drainedB4,350.821.42%
SampselSomewhat poorly drained, Poorly drainedC/D4,158.661.35%
SamdayWell drainedD4,147.51.35%
MountainburgWell drainedD4,094.41.33%
BadlandWell drainedD3,340.291.09%
SheloctaWell drainedC, B3,039.020.99%
HerodPoorly drainedB/D, D2,988.640.97%
GranileWell drainedC, B2,893.680.94%
FayetteWell drainedC2,807.440.91%
Component acreage is estimated from SSURGO map-unit component percentages. Component values are not independently mapped polygon boundaries.

Drainage Class Distribution

Well drained63.51%
195,070.98 acres
Moderately well drained11.93%
36,655.98 acres
Unknown / Unmapped9.45%
29,017.88 acres
Somewhat poorly drained5.6%
17,203.76 acres
Poorly drained5.2%
15,970.63 acres
Somewhat excessively drained1.77%
5,444.59 acres
Excessively drained0.58%
1,767.62 acres
Very poorly drained0.37%
1,146.25 acres
Subaqueous0.02%
68.87 acres

Hydrologic Soil Group Distribution

Group D30.79%
94,573.2 acres
Group C27.37%
84,063.28 acres
Group B20.25%
62,213.36 acres
Group A6.09%
18,693.47 acres
Group C/D5.71%
17,538.32 acres
Group Unknown / Unmapped4.84%
14,854.14 acres
Group B/D3.23%
9,913.11 acres
Group A/D0.16%
497.68 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: 13.96%
Nearly Level (0-2%)16.96%
52,107.15 acres
Gently Sloping (2-8%)26%
79,852.2 acres
Moderately Sloping (8-15%)15.91%
48,868.81 acres
Steep (15-30%)22.79%
70,001.28 acres
Very Steep (>30%)8.54%
26,224.64 acres
Unspecified Slope8.23%
25,292.47 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).