HomeMy WebLinkAboutUSDA Soils MapMAP LEGENDMAP INFORMATION
Area of Interest (AOI)
Area of Interest (AOI)
Soils
Soil Map Units
Soil Ratings
A
A/D
B
B/D
C
C/D
D
Not rated or not available
Political Features
Municipalities
Cities
Urban Areas
Water Features
Oceans
Streams and Canals
Transportation
Rails
Roads
Interstate Highways
US Routes
State Highways
Local Roads
Other Roads
Original soil survey map sheets were prepared at publication scale.
Viewing scale and printing scale, however, may vary from the
original. Please rely on the bar scale on each map sheet for proper
map measurements.
Source of Map: Natural Resources Conservation Service
Web Soil Survey URL: http://websoilsurvey.nrcs.usda.gov
Coordinate System: UTM Zone 11N
This product is generated from the USDA-NRCS certified data as of
the version date(s) listed below.
Soil Survey Area: Kern County, California, Northwestern Part
Survey Area Data: Version 5, Jul 22, 2008
Date(s) aerial images were photographed: 9/16/1992
The orthophoto or other base map on which the soil lines were
compiled and digitized probably differs from the background
imagery displayed on these maps. As a result, some minor shifting
of map unit boundaries may be evident.
Hydrologic Soil Group–Kern County, California, Northwestern Part
(SR 178/Morning Drive)
Natural Resources
Conservation Service
Web Soil Survey 2.0
National Cooperative Soil Survey
8/29/2008
Page 2 of 4
Hydrologic Soil Group
Hydrologic Soil Group— Summary by Map Unit — Kern County, California, Northwestern Part
Map unit symbolMap unit nameRatingAcres in AOIPercent of AOI
134Cuyama loam, 2 to 9
percent slopes
B90.29.8%
135Cuyama loam, 9 to 15
percent slopes
B208.522.7%
138Delano sandy loam, 0 to
2 percent slopes
B330.636.0%
139Delano sandy loam, 2 to
5 percent slopes
B186.020.2%
140Delano sandy loam, 5 to
9 percent slopes
B104.311.3%
Totals for Area of Interest (AOI)919.7100.0%
Hydrologic Soil Group–Kern County, California, Northwestern PartSR 178/Morning Drive
Natural Resources
Conservation Service
Web Soil Survey 2.0
National Cooperative Soil Survey
8/29/2008
Page 3 of 4
Description
Hydrologic soil groups are based on estimates of runoff potential. Soils are
assigned to one of four groups according to the rate of water infiltration when the
soils are not protected by vegetation, are thoroughly wet, and receive precipitation
from long-duration storms.
The soils in the United States are assigned to four groups (A, B, C, and D) and
three dual classes (A/D, B/D, and C/D). The groups are defined as follows:
Group A. Soils having a high infiltration rate (low runoff potential) when thoroughly
wet. These consist mainly of deep, well drained to excessively drained sands or
gravelly sands. These soils have a high rate of water transmission.
Group B. Soils having a moderate infiltration rate when thoroughly wet. These
consist chiefly of moderately deep or deep, moderately well drained or well drained
soils that have moderately fine texture to moderately coarse texture. These soils
have a moderate rate of water transmission.
Group C. Soils having a slow infiltration rate when thoroughly wet. These consist
chiefly of soils having a layer that impedes the downward movement of water or
soils of moderately fine texture or fine texture. These soils have a slow rate of water
transmission.
Group D. Soils having a very slow infiltration rate (high runoff potential) when
thoroughly wet. These consist chiefly of clays that have a high shrink-swell
potential, soils that have a high water table, soils that have a claypan or clay layer
at or near the surface, and soils that are shallow over nearly impervious material.
These soils have a very slow rate of water transmission.
If a soil is assigned to a dual hydrologic group (A/D, B/D, or C/D), the first letter is
for drained areas and the second is for undrained areas. Only the soils that in their
natural condition are in group D are assigned to dual classes.
Rating Options
Aggregation Method: Dominant Condition
Component Percent Cutoff: None Specified
Tie-break Rule: Lower
Hydrologic Soil Group–Kern County, California, Northwestern PartSR 178/Morning Drive
Natural Resources
Conservation Service
Web Soil Survey 2.0
National Cooperative Soil Survey
8/29/2008
Page 4 of 4