HomeMy WebLinkAbout20161304.tiff Hydrologic Soil Group—Weld County, Colorado, Southern Partto
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Map Scale: 1:4,390 if printed on A landscape (11" x 8.5") sheet. N
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0 50 100 200 300 $
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0 200 400 800 1200
Map projection: Web Mercator Corner coordinates: WG584 Edge tics: UTM Zone 13N WG584
USDA Natural Resources Web Soil Survey 1/6/2016
a
Conservation Service National Cooperative Soil Survey Page 1 of 4
Hydrologic Soil Group—Weld County, Colorado, Southern Part
(1137 WCR 13 (Lawrence Kerr))
MAP LEGEND MAP INFORMATION
Area of Interest (AOI) p C The soil surveys that comprise your AOI were mapped at 1 :24,000.
Area of Interest (AOI) ® C/D
Warning: Soil Map may not be valid at this scale.
Soils D
Soil Rating Polygons ® Enlargement of maps beyond the scale of mapping can cause
A CI Not rated or not available misunderstanding of the detail of mapping and accuracy of soil line
placement. The maps do not show the small areas of contrasting
ND Water Features soils that could have been shown at a more detailed scale.
Streams and Canals
B
Transportation Please rely on the bar scale on each map sheet for map
B/D measurements.
4-4-f Rails
C ti Interstate Highways Source of Map: Natural Resources Conservation Service
Web Soil Survey URL: http://websoilsurvey.nrcs.usda.gov
C/D US Routes Coordinate System: Web Mercator (EPSG:3857)
D Major Roads Maps from the Web Soil Survey are based on the Web Mercator
Not rated or not available projection, which preserves direction and shape but distorts
Local Roads distance and area. A projection that preserves area, such as the
Soil Rating Lines Background Albers equal-area conic projection, should be used if more accurate
A . Aerial Photography calculations of distance or area are required.
.+' ND This product is generated from the USDA-NRCS certified data as of
pos , B the version date(s) listed below.
,so , B/D Soil Survey Area: Weld County, Colorado, Southern Part
Survey Area Data: Version 14, Sep 22, 2015
es s C
Soil map units are labeled (as space allows) for map scales 1 :50,000
.a C/D or larger.
,.tio D Date(s) aerial images were photographed: Mar 16, 2012—Apr 13,
• r Not rated or not available 2012
Soil Rating Points The orthophoto or other base map on which the soil lines were
A compiled and digitized probably differs from the background
imagery displayed on these maps. As a result, some minor shifting
® ND of map unit boundaries may be evident.
• B
MI B/D
USDA Natural Resources Web Soil Survey 1/6/2016
Conservation Service National Cooperative Soil Survey Page 2 of 4
Hydrologic Soil Group—Weld County, Colorado, Southern Part 1137 WCR 13 (Lawrence Kerr)
Hydrologic Soil Group
Hydrologic Soil Group— Summary by Map Unit — Weld County, Colorado, Southern Part (CO618)
Map unit symbol Map unit name Rating Acres in AOI Percent of AOI
40 Nunn loam, 1 to 3 C 11 .3 28.4%
percent slopes
56 Renohill clay loam, 0 to 3 D 2.8 6.9%
percent slopes
66 Ulm clay loam, 0 to 3 C 5.0 12.6%
I percent slopes
82 Wiley-Colby complex, 1 B 20.8 52. 1 %
to 3 percent slopes
Totals for Area of Interest 40.0 100.0%
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.
USDA Natural Resources Web Soil Survey 1/6/2016
a Conservation Service National Cooperative Soil Survey Page 3 of 4
Hydrologic Soil Group—Weld County, Colorado, Southern Part 1137 WCR 13 (Lawrence Kerr)
Rating Options
Aggregation Method: Dominant Condition
Component Percent Cutoff. None Specified
Tie-break Rule: Higher
USDA Natural Resources Web Soil Survey 1/6/2016
all Conservation Service National Cooperative Soil Survey Page 4 of 4
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