HomeMy WebLinkAbout20194779.tiffUSDA United States
a Department of
Agriculture
NRCS
Natural
Resources
Conservation
Service
A product of the National
Cooperative Soil Survey,
a joint effort of the United
States Department of
Agriculture and other
Federal agencies, State
agencies including the
Agricultural Experiment
Stations, and local
participants
Custom Soil Resource
Report for
Weld County,
Colorado,
Southern Part
Oak Leaf Solar 42 LLC - NRCS
Soils Report
August 15, 2019
reface
Soil surveys contain information that affects land use planning in survey areas..
They highlight soil limitations that affect various land uses and provide information
about the properties of the soils in the survey areas, Soil surveys are designed for
many different users, inducing farmers, ranchers, foresters, agronomists, rban
planners, community officials,, engineers, developers, builders, am home buyers.
Also, conservationists, teacr*ers, students, and specialists in recreation, waste
disposa, and pollution control can use the surveys to he p them understand,
protect, or enhance the environment.
Various land use re ulatiions of Federal, State,, and local governments may impose
special restrictions on land use or land treatment. Soil surveys identify soil
properties that are used in making various land use or land treatment decisions.
The information is intended to help the land users identify and reduce the effects of
soil limitations on various land uses. The landowner or user is responsible for
identifying and complying with existing laws and rot ilations.
Although .soil survey information can be used for general farm, local, and wider area
planning, onsite investigation is needed to supplement this information in some
cases. Examples include soil quality assessments (http:// w.nres.usda.gov/wps/
portalinrcs,, amain/soils healthi) and certain conservation and engineering
applications. For more detailed information, contact your local USDA Service Center
(https offices.sc.egov.usda.govJlocator/app?agency=nres) or your NRCS State Soil
Scientist (http://w w.nres.usda.goviwps./portaF/nresfdetailfseils/contactus!?
of l=nros142p2 053951).
Great differences in soil properties can occur within short distances. Some soils are
seasonally wet or subject to flooding. Some are too unstable o be used as a
foundation for buildings or roads. Clayey or wet soils are poorly suited to use as
sseptic tank absorption fields.: A h gh water table makes a soil poorly suited to
basements or underground insta lations.
The National Cooperative Soil Survey is a jcint effort of the United States
Department of Agriculture and other Federal agencies, State agencies including the
Agricultural Experiment Stations, and local acencies. The Natural Resources
Conservation Service (MRCS) has leadership for the Federal part of the National
Cooperative Soil Survey.
Information about soils is upcated 2eriodically. Updated information is available
through tie NRCS Web Soil Survey, the site for official soil survey information,:
The U.S. Department of Agriculture (USDA) prohibits discrimination in all its
programs and activities on the basis of -ace, dolor, national origin, age, disability,
and where applicable, sex, marital status, familial status, parental status, religion.
sexual oir►ientation, genetic information, po itical beliefs, reprisal, or because alI or a
part of an individual's income is derived from any public assistance program, (Not
all prohibited bases apply to all programs.) Persons with disabilities who requi_e
2
alternative means for communication of program information (Braille, large print,
autiotape, etc.) should contact USDA's TARGET Center at (202) 720-2600 (voice
and TDD). To file a complaint of discrimination, write to USDA, Director, Office of
Civil Rights, 1400 Independence Avenue, S.W., Washington, D.C. 20250-9410 or
call (800) 795-3272 (voice) or (202) 720-6382 (TOD). USDA is an equal opportunity
provider and employer.
3
Contents
Preface I■■Y
How Soil Surveys Are Made .5
Soil Mai.. 8
Soil Map 9
Legend , .10
Map Unit Legend 11
Map Unit Descriptions ■ 11
Weld County, Colorado, Southern Part .. 13
Altvan loam, 0 to 1 percent slopes 13
Altva.rr loam, el to 3 percent slopes 14
21 Dacoria clay loam, 0 to 1 percent slopes15
29 J ulesburg sandy loam, 0 to 1 percent slopes ...............16
30—Julesburg sandy loam, I to 3 percent slopes 17
75 Voris sandy_ loam, 0 to 1 percent sslopes.19
76 Vona sandy loam, 1 to 3 percent slopes.20
References 22
4
How Soil Surveys Are Made
Soil surveys are made to provide information about the soilsand miscellaneous
areas in .a specific area. They include a description of the soils and miscellaneous
areas and their location on the landscape and tables that show soil properties and
limitations affecting various uses. Soil scientists observed the steepness, length,
and shape of the slopes; the general pattern of drainage; the kinds of crops and
native plants; and the kinds of bedrock. They observed and described many soil
profiles. A soil profile is the sequence of natural layers, or horizons, in a soil. The
profile extends from the surfacedown into the unconsolidated material in which the
soil formed or from the surface down to bedrock. The unconsolidated material is
devoid of roots and other living organisms and has not been changed by other
biologcal activity.
Currently, soils are mapped according to the boundaries of major land resource
areas (MLRAs). MLRAs are geographically associated land resource units that
share common characteristics related to physiography, geology, c irate, water
resources, soils, biological resources, and land uses (USDA, 2006). Soil survey
areas typically consist of parts of one or more MLRA.
The soils and miscellaneous areas in a survey area occur in an orderly pattern that
is related to the geology, landforms, relief, climate, and natural vegetation of the
area. Each kind of soil and miscellaneous area is associated with a particular kind
of landform or with a segment of the landform. By observing the soils and
miscellaneous areas in the survey area and relating their position to specific
segments of the landform, a soil scientist develops a concept, or model, of how they
were formed. Thus, during mapping, this model enables the soil scientist to predict
with a considerable degree of accuracy the kind of soil or miscellaneous area at a
specific location on the landscape.
Commonly, individual soils on the landscape merge into one another as their
characteristics gradually change. To construct an accurate soil map, however, soil
scientists must determine the boundaries between the soils. They can observe only
a limited number of soil profiles. Nevertheless, these observations, supplemented
by an understanding of the soil -vegetation -landscape relationship, are sufficient to
verify predictions of the kinds of soil in a area and to determine the boundaries.
Soil scientists recorded the characteristics of the soil profiles that they studied. They
noted soil co or, texture, size and shape of soil aggregates, kind and amount of rock
fragments, distribution of plant roots, reaction, and other features that enable them
to identify soils. After describing the soils in the survey area and determining their
properties, the soil scientistsassignedthe soils to taxonomic classes (units).
Taxonomic classes areconcepts. Each taxonomic class has a set of soil
characteristics with precisely defined limits. The classes are used as a basis for
comparison to classify soils systematically. Soil taxonomy, the system of taxonomic
classification used in the united states, is based mainly on the kind and character
of soil properties and the arrangement of horizons within the profile. After the soil
5
Custom Soil Resource Report
scientists classified and named the soils in the survey area, they compared the
individual soils with similar soils in the same taxonomic class in other areas so that
they could confirm data and assemble additional data based on experience and
research.
The objective of soil mapping is not to delineate pure map unit components; the
o bjective is to separate the landscape into landforms or landform segments that
have similar use and management requirements. Each map unit is defined by a
u nique combination of soil components and/or miscellaneous areas in predictable
proportions. Some components may be highly contrasting to the other components
of the map unit. The presence of minor components in a map unit in no way
diminishes the usefulness or accuracy of the data. The delineation of such
lanciforms and landform segments on the map provides sufficient information for the
development of resource plans. if intensive use of small areas is planned, onsite
investigation is needed to define and locate the soils and miscellaneous areas.
Soil scientists make many field observations in the process of producing a soil map.
The frequency of observation is dependent upon several factors, including scale of
mapping, intensity of mapping, design of map units, complexity of the landscape,
and experience of the soil scientist. Observations are made to test and refine the
soil -landscape model and predictions and to verify the classification of the soils at
specific locations. Once the soil -landscape model is refined, a significantly smaller
n umber of measurements of individual soil properties are made and recorded.
These measurements may include field measurements, such as those for color,
depth to bedrock, and texture, and laboratory measurements, such as those for
content of sand, silt, clay, salt, and other components. Properties of each soil
typically vary from one point to another across the landscape.
Observations for map unit components are aggregated to develop ranges of
characteristics for the components. The aggregated values are presented. Direct
measurements do not exist for every property presented for every map unit
component. Values for some properties are estimated from combinations of other
properties.
ies.
While a soil survey its in progress, samples of some of the soils in the areagenerally
are collected for laboratory analyses and for engineering tests. Soil scientists
interpret the data from these analyses and tests as well as the f eld-observed
characteristics aid the soil properties to determine the expected behavior of the
soils under different uses. Interpretations for all of the soils are field tested through
o bservation of the soils in different uses and under different levels of management.
Some interpretations are modified to fit local conditions, and some new
interpretations are developed to meet local needs. Data are assembled from other
sources, such as research information, production records, and field experience of
specialists. For example, data on crop yields under defined levels of management
are assembled from farm records and from field or plot experiments on the same
kinds of soil.
Predictions about soil behavior are based not only on soil properties but also on
such variables as climate and biological activity. Soil conditions are predictable over
long periods of time, but they are not predictable from year to year. For example,
soil scientists can predict with .a fairly high degree of accuracy that a given soil will
have a high water table within certain depths in most years, but they cannot predict
that a high water table will always be at a specific level in the soil on a specific date.
After soil scientists located and identified the significant natural bodies of soil in the
survey area, they drew the boundaries of these bodies on aerial photographs and
6
Custom Soil Resource Report
identified each as a specific map unit. Aerial photographs show trees, buildings,
fields, wads, and rivers, all of which help in locating boundaries accurately.
Soil Map
The soil map section includes the soil map for the defined area of interest, a list of
soil map units on the map and extent of each map unit, and cartographic symbols
displayed on the map. Also presented are various metadata about data used to
produce the map, and a description of each soil map unit.
8
8
4001541"N
4J° 1510"N
0
1
n
b
0
514200 514300 514400 514540 51 514
Custom Soil Resource Report
Soil Map
51
515106 515210 515X0 515400 515500 515500
I I I I I I I I
5142C0 514B 514400 514500 514030 5147M1 514805 514900 515000 515100 515200 515300 515400 515500 51600
Map Scale: 1:6,84Q if pitted on A landscape (11" x 8,5" 1
0
100 200
30B
Map pection, Web Mere
eicg
Me
400 600
1200 1800
Cann:ordinates: linates: WG584E1e tics: UTM, Zone 1)N WG14
0
l4,
0
Erg
0
40•° 15 i0" N
Custom Soil Resource Report
Area of Interest (AOl)
Area of Interest (AOI)
Soils
I
MAP LEGEND
Soil Map Unit Polygons
Soil Map Unit Lines
Soil Map Unit Points
Special Point Features
Blowout
x
0
it
0
tt
R
0
0
•}$
4
0
Borrow Pit
Clay Spot
Closed Depression
Gravel Pit
Gravelly Spot
Landfill
Lava How
Marsh or swamp
Mine or Quarry
Miscellaneous Water
Perennial 4iater
Rock Outcrop
Saline Spot
Sandy Spot
Severely Eroded Spot
Sinkhole
Slide or S lip
Sodic Spot
p.
Spoil Area
Stony Spot
Very Stony Spot
Wet Spot
Other
Special Line Features
Water Features
Streams and Canals
Transportation
1+1 Rails
Interstate Highways
US Routes
Major Roads
Local Roads
Background
Aerial Photography
MAP INFORMATION
The soil surveys that comprise your A0I were mapped at
1:24,000.
Warn
ng. So Map may not be valid at this scale.
Enlargement of maps beyond the scale of mapping can cause
misunderstanding of the detail of mapping and accuracy of soil
line placement. The maps do not show the small areas of
contrasting soils that could have been shown at a more detailed
sca le.
Please rely on the bar scale on each map sheet for map
measurements.
Source of Map: Natural Resources ConservationService
Web Soil Survey URL:
Coordinate System: Web Mercator (EPSG:38€7)
Maps from the Web Soil Survey are based on the Web Vercator
projection, which preserves direction and shape but distorts
distance and area. A projection that preserves area; such as the
Albers equal-area conic projection; should be used if more
accurate calculations of distance or area are required.
This product cs;generated from the USDA-NRCS certified data as
of the version date(s) listed below.
Soil Survey Area: Weld County, Colorado; Southern Part
Survey Area Data: Version 11, Sep 10, 2018
Sol map units are labeled (as space allows) for map scales
1:50,Q00 or larger
Date(s) aerian images were photographed: Sep 20; 2015 —pct
21. 2017
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 maybe evident.
10
Custom Soil Resource Report
Map Unit Legend
Map Unit Symbol
Map Unit Name
Acres in AOl
Percent of AOI
1
Altvan
slopes
leanly 0 to 1
percent
58.7
36.0%
Altvan
slopes
loam, 1 to 3 percent
25.4
15.6%
21
Dacono
clay loam, 0
percent slopes
to 1
0.2
0.1%
29
Julesburg sandy
percent slopes
barn, 0 to 1
31.1
19.1%
30
Julesburg sandy
percent slopes
loam, 1 to 3
26.9
16.5%
75
Vona
sandy loam 0 to
percent slopes
1
20.4
12.6%
76
Vona
sandy loam, 1 to 3
percent slopes
0.1
01%
Totals for Area of Interest
162.8
100.0%
Map Unit Description
5
The map units delineated on the detailed sei[ maps in a soil survey represent the
soils or miscellaneous areas in the survey area. The map unit descriptions, along
with the maps, can be used to determine the composition and properties of a unit.
A map unit delineation on a soil map represents an area dominated by one or more
major kinds of soil or miscellaneous areas. A map unit is identified and named
according to the taxonomic classification of the dominant soils. Within a taxonomic
class there are precisely defined limits for the properties of the soils. On the
Ian
scape, however, the soils are natural phenomena, and they have the
characteristic variability of all natural phenomena. Thus, the range of some
observed properties may extend beyond the limits defined for a tao normic class.
Areas of soi[s of a single taxonomic class rarely, if ever, can be mapped without
including areas of other taxonomic classes. Consequently, every map unit is made
up of the soils or miscellaneous areas for which it its named and some minor
components that belong to taxonomic classes other than those of the major soils.
Most minor soils have properties similar to those of the dominant soil or soils in the
map unit, and thus they do not affect use and management. These are called
noncontrasting, or similar, components. They may or may not be mentioned in a
particular map unit description. Other minor components, however, have properties
and behavioral characteristics divergent enough to affect use or to require different
management. These are called contrasting, or dissimilar, components. They
generally are in small areas and could not be mapped separately because of the
scale used. Some small areas of strongly contrasting soils or miscellaneous areas
are identified by a special symbol on the maps. If included in the database for a
given area, the contrasting minor components are identified in the map unit
Custom Soil Resource Report
descriptions along with some characteristics of each. A few areas of minor
components may not have been observed, and consequently they are not
mentioned in the descriptions, especially where the pattern was so complex that it
was impractical to make enough observations to identify all the soils and
miscellaneous areas on the landscape.
The presence of minor components in a map unit in no way diminishes the
u sefulness or accuracy of thedata. The objective of mapping is not to delineate
pure taxonomic classes but rather to separate the landscape into landforms or
lanciform segments that have similar use and management requirements. The
delineation of such segments on the map provides sufficient information for the
development of resource plans. If intensive use of small areas is planned, however,
e nsile investigation is needed to define and locate the soils and miscellaneous
areas.
An identifying symbol precedes the map unit name in the map unit descriptions.
Each description includes general facts about the unit and gives important soil
properties and qualities.
Soils that have profiles that are almost alike make up a soil series. Except for
differences in texture of the surface layer, all the soils of a series have major
horizons that are similar in composition, thickness, and arrangement.
Soils of one series can differ in texture of the surface layer, slope, stoniness,
salinity, degree of erosion, and other characteristics that affect their use. On the
basis of such drierences, a soil series is divided into soil phaes. Most of the areas
shown on the detailed soil maps are phases of soil series. The name of a soil phase
commonly indicates a feature that affects use or management. For example, Alpha
silt loam, 0 to 2 percent slopes, its a phase of the Alpha series.
Some map units are made up of two or more major soils or miscellaneous areas.
These map units are complexes, associations, or undifferentiated groups.
A complex consists of two or more soils or miscellaneous areas in such an intricate
pattern or in such small areas that they cannot be shown separately on the maps.
The pattern and proportion of the soils or miscellaneous areas are somewhat similar
in all areas. Alpha -Beta complex, g to 6 percent slopes, is an example.
An association is made up of two or more geographica
ly associated soils or
miscellaneous areas that are shown as one unit on the maps. Because of present
o r anticipated uses of the map units in the survey area, it was not considered
practical or necessary to map the soils or miscellaneous areas separately. The
pattern and relative proportion of the soils or miscellaneous areas are somewhat
similar. Alpha -Beta. association, 0 to 2 percent slopes, is an example.
An undifferentiated group is made up of two or more soils or miscellaneous areas
that could be mapped individually but are mapped as one unit because similar
interpretations can be made for use and management. The pattern and proportion
of the soils or miscellaneous areas in a mapped area are not uniform. An area can
be made up of only one of the major soils or miscellaneous areas, or it can be made
u p of all of them. Alpha and Beta soils, 0 to 2 percent slopes, is an example.
Some surveys include miscellaneous areas. Such areas have little or no soil
material and support little or no vegetation. Rock outcrop is an example.
12
Custom Soil Resource Report
Weld County, Colorado, Southern Part
1—AItvan loam, 0 to 1 percent slopes
Map Unit Setting
National map unit symbol: 361j
Elevation: 4,500 to 4,900 feet
Mean annual precipitation: 14 to 16 inches
Mean annual air temperature: 46 to 48 degrees F
Frost -free per/cd: 130 to 150 days
Farmland classification: Not prime farmland
Map Unit Composition
Attvan and similar soil's: 90 percent
Minor components: 10 percent
Estimates are based on observations, descriptions, and transacts of the mapunit.
Description of Altvan
Sefting
Landform: Terraces
Down -slope shape: Linear
Across -slope shape: Linear
Parent material: Old alluvium
Typical profile
0 to 10 inches: loam
H2 -• 10 to 25 inches: clay loam
H3 - 25 to 60 inches: gravelly sand
Properties and qualities
Slope: 0 to _1 percent
Depth to restrictive feature: More than 80 inches
Natural drainage class: Well drained
Runoff class: Low
Capacity of the most limiting layer to transmit water (sat)., Moderately high to
high (0.20 to 2.00 in/hr)
Depth to water tabu: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Calcium carbonate, maximum in profile: 5 percent
Available water storage in profile: Low (about 5.7 inches)
Interpretive groups
Land capability classification (irrigated): 3s
Land capability classification (nonir► gated): 4e
Hydrologic Soil Group: B
Ecological site: Loamy Plains (R0675Y002 O)
Hydric soil rating: No
Minor Components
Cascajo
Percent of map unit: 9 percent
bydric soil rating: No
Custom Soil Resource Report
Aquic haplustolls
Percent of map unit: 1 percent
Landform: Swales
Hydric soil rating: Yes
—Altvan loam, #1 to 3 percent, slopes
Map Unit Setting
National map unit symbol: 361w
Elevation: 4,500 to 4,900 feet
Mean annual precipitation 14 !. to 16 inches
Mean annual air temperature: 46 to 48 degrees F
Frost -free period: 130 to 150 days
Farrniarid classification Prime farmland if irrigated
Map Unit Composition
Altvan and similar soils: 90 percent
Minor components: 13 percent
Estimates are based on observations, descriptions, and transacts of the mapunif.
Description of Altvan
Setting
Landform: Terraces
Down -slope shape: Linear
Across -slope shape: Linear
Parent material: Old alluvium
Typical profile
H1 0 to 10 inches: loam
H2 - 10 to 24 inches: sandy clay loam
H3 24 to 60 inches: gravelly sand
Properties and qualities
Slope: I to 3 percent
Depth to restrictive feature: More than 80 inches
Natural drainage class: Well drained
Runoff class: Low
Capacity of the most limiting layer to transmit water 'Ksat): Moderately high to
high (0.20 to 2.00 Ehihr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of pondiny: None
Calcium carbonate, maximum in profile: 5 percent
Available water storage in profile: Low (about 5.6 inches)
Interpretive groups
Land capability classification (irrigated): 3e
Land capability classification 'non/rdgatedd: 4e
Hydrologic Soil Group: B
Custom Soil Resource Report
Ecological site: Loamy Plains (R067BY002 O)
J ' dric soil rating: No
Minor Components
Cascajo
Percent of map unit:
Midrib 'ric soil rating: No
Aquic hapl ustolis
Percent of map unit: I
Landform:rapes
Midrib soil rating: Yes
percent
percent
21 Dacono clay loam, 0 to 1 percent slopes
Map Unit Setting
National map unit symbol: 361y
Elevation: 4,550 to 4,970 feet
Mean annual precipitation: 14 to 18 inches
Mean annual air temperature: 48 to 52 degrees F
Frost -free period: 140 to 160 days
Farmland classification: Prime farmland if irrigated
Map Unit Composition
Dacono and similar soils: 85 percent
Minor components: 15 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Dacono
Setting
Landform: Terraces
Down -slope shape: Linear
Across -slope shape: Linear
Parent material: Mixed alluvium
Typical profile
HI - 0 to 12 inches: clay loam
H2 - 12 to 21 inches: clay loam
H3 - 21 to 27 inches: clay loam
H4 - 27 to 60 inches: very gravelly sand
Properties and qualities
Slope: 0to :1 percent
Depth to restrictive feature: More than 80 inches
Natural drainage class: Vtoiell drained
Runoff class: Low
Capacity of the most limiting layer to transmit water ' sat?: Moderately high (0.20
to 0.60 inlhr)
Depth to water table: More than 80 inches
Custom Soil Resource Report
Frequency offloading: None
Frequency ofpond'ing: None
Calcium carbonate, maximum in profile: 15 percent
Salinity, maximum in profile: Nonsalirie to very slightly saline (0.0 to 2.0
mmhosicm)
Available water storage in profile: Moderate (about 6.3 inches)
Interpretive groups.
Land capability classification (irrigated) : 2s
Land capability classification (nonFrrrgafed): 3s
Hydrologic Soil Group:
Ecological site: Clayey Plains (R067BY042OO)
200)
Hydric soil rating: No
Minor Components
Heldt
Percent of map unit: 5
Hydric soil rating: No
Nunn
Percent of map unit: 5
Hydric soil rating: No
Altvan
Percent of map unit: 5
Hydric soil rating: No
percent
percent
percent
29—Julesburg sandy loam, 0 to 1 percent slopes
Map Unit Setting
National map unit symbol 3626
Elevation: 4,700 to 4,800 feet
Mean annual precipitation: 15 to 19 inches
Mean annual air temperature: 48 to 52 degrees F
Frost -free period: 145 to 155 clays
Farmland classification: Prime farmland if irrigated and the product of I (soil
erodibility) x C (climate factor) does not exceed 0
Map Unit Composition
Julesburg and similar sot's: 85 percent
Minor components: 15 percent
Estimates are based on observations, descriptions, and transects of the mapunif.
Description of Julesburg
Setting
La ndform: Terraces
Down -slope shape: Linear
Across -slope shape: Linear
Parent material South platte river alluvium
Custom Soil Resource Report
Typical profile
HI - 0 to 12 inches: sandy loam
1-12 - 12 to 27 inches: sandy loam
H3 - 27 to 60 inches: sand
Properties and qualities
Slope:to 1 percent
Depth to restrictive feature: More than 80 inches
Natural drainage class: Well drained
Runoff crass: Very low
Capacity of the most limiting layer to transmit water (Ksat): High (2.00 to 6.00
in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency ofpond ng: None
Avertable water storage in profile: Moderate (about 6.5 inches)
Interpretive groups
Land capability classification (Irrigated): 2s
Land capability classification (nonrrrtgate): 3e
Hydrologic Soil Group: A
Ecological site: Sandy Plains (R067BY024CO)
Hydric soil rating: No
Minor Components
Edgar
Percent of map unit: 4
Hydric soil ratIng: No
Barmy it
Percent of map unit: 4
Hydric soil rating: No
Valle nt
Percent of map unit: 4
Hydric soil rating: No
Vona
Percent of map unit:
Hydric soil rating: No
percent
percent
percent
percent
30—Julesburg b urg sandy loam, to 3 percent slopes
Map Unit Setting
National map unit symbol: 2tIpz
Elevation: 4,200 to 4,320 feet
Mean annual precipitation: 15 to 2.0 inches
Mean annual air temperature: 46 to 52 degrees F
Frost -free period: 144 to 163 days
Custom Soil Resource Report
Farmland classification: Prime farmland if irrigated and the product of I (soil
erodibility) x C (climate factor) does not exceed 60
Map Unit Composition
Julesburg and similar soils: 85 percent
Minor components: 15 percent
Estimates are based cn observations, descriptions, and transacts of the mapunit.
Description of Julesburg
Setting
Landform: Interiluves
Landform position (two-dimensional): Summit
Landform position (three-dimensional): Interfluve
Down -slope shape: Linear
Across -slope shape: Liner
Parent material: Ealisn sands
Typical profile
A 0 to 5 inches: sandy loam
BA - 5 to 12 inches: sandy loam
Std - 12 to 30 inches: sandy Ioarn
Std' - 30 to 39 inches: sandy barn
C - 39 to 80 inches: loamy sand
Properties and qualities
Slope: I to 3 percent
Depth to restrictive feature: More than 80 inches
Natural drainage class: Well drained
Runoff class: Very low
Capacity of the most limiting layer- to transmit water ' sat):
inihr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Salinity, maximum in profile: Nonsali ne to very slightly saline (0.1
mmhos/cm)
Available water storage in profile: Low (about 5.9 inches)
Interpretive groups
Land capability classification (irrigated): 30
Land capability classification (nonir-rigated): 45
Hydrologic SoilGroup: A
Ecological site: Sandy Rains (R072XY l i S )
Hydric soil rating: No
Minor Components
Valent
Percent of map unit: 5 percent
Landform: I nterfl a ves
Landform position ;three-dimensional): Interfluve
Down -slope shape: Linear
Across -slope shape: Linear
Ecological site: Rolling Sands (R0I2XYI O9K )
Hydric soil rating: No
High (2.00 to 6.00
to 2.0
Custom Soil Resource Report
Manter
Percent of map unit: 5 percent
Landform: InterfIuves
Landform position (two-dimensional): Summit
Landform position (three-dimensional): Interfluve
Down -slope shape: Linear
Across -slope shape: Linear
Ecological site: Sandy Plains (IRC72XYWKS)
Hydric soil rating: No
Haxtun
Percent of map unit: 5 percent
Landform: Interfluves, rlrainageways
Landform position (two-dimensional): Summit
Landform position (three-dimensional): Interfluve
Down -slope shape: Linear
Across -slope shape: Concave
Ecological site: Sandy Plains (R072XY111 S)
Hydric soil ra ti-ng : No
75 Vona sandy loam, 0 to 1 percent slopes
Map Unit Setting
National map unit symbol: 363v
Elevation 4,650 to 4,950 feet
Mean annual precipitation: 13 to 15 inches
Mean annual air temperature: 48 to 55 degrees F
Frost -free period: 130 to 160 days
Farmland classification: Farmland of statewide importance
Map Unit Composition
Vona and similar soils: 85 percent
Minor components: 15 percent
Estimates are based on observations, descriptions, and transects of the rnapunit.
Description of Vona
Setting
Landform: Terraces
Down -slope shape: Linear
Across -slope shape: Linear
Parent material Alluvium
Typical profile
I - 0 to 6 inches: sandy loam
H2 6 to 28 inches: fine sandy loam
H3 -- 28 to 60 inches: sandy loam
Properties and qualities
Slope: 0 to 1 percent
Custom Soil Resource Report
Depth to restrictive feature: More than 80 inches
Natural drainage class: Well drained
Runoff class: Very low
Capacity of the most limiting layer to transmit water (sat): High (1.98 to 6.00
in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency ofpcnding: None
Calcium carbonate, maximum in profile: 15 percent
Salinity, maximum in profile: Nonsaline to slightly saline (0.0 to 4.0 mrnhos/cm)
Available water storage in profile: Moderate (about 6.8 inches)
Interpretive groups
Land capability classification (irrigated): 3e
Hydrologic Soil Group: A
Ecological site: Sandy Plains (1.067BY0 4CO)
Hydric soil rating: No
Minor Components
Rernmit
Percent of map unit: 11 percent
Hydric soil rating: No
Olney
Percent of map unit: 4 percent
Hydric soil rating: No
76 Vona sandy loam, e1 to 3 percent slopes
Map Unit Setting.
► ational map unit symbol: 363w
Elevation: 4,600 to 5200 feet
Mean annual precipitation: 13 to 15 inches
Mean annual air temperature: 48 to 55 degrees F
Frost -free period: 130 to 160 days
Farmland classification: Farmland of statewide importance
Map Unit Composition
Vona and similar soils: 85 percent
Minor components: 15 percent
Estimates are based on observations, descriptions, and tr-ansects of the mapunit.
Description of Vona
Setting
Landform: Plains, terraces
Down -slope shape: Linear
Across -slope shape: Linear
Parent material: Alluvium and.for eD is n deposits
Custom Soil Resource Report
Typical profile
HI 0 to 6 inches: sandy loam
H2 - 6 to 28 inches: tine sandy loam
H3 28 to 60 inches: sandy loam
Properties and qualities
Slope: I to 3 percent
Depth to restrictive feature: More than 80 inches
Natural drainage class, Well drained
Runoff crass: Very low
Capacity of the most limiting layer to transmit water (sat): High (1.98 to 6.00
in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of posing: None
Calcium carbonate, maximum in profile: 15 percent
Salinity maximum in profile: Nonsallirie to slightly saline (0.0 io 4.0 mhos/cm)
Available water storage in profile: Moderate (about 6.8 inches)
Interpretive groups.
Land capability classification (irrigated): 3e
Land capability classification (non irrigated): 4e
Hydrologic Soil Group.: A
Ecological site: Sandy Rains (RC67BY024CO)
Hydric soil ra tin : No
Minor Components
Remimit
Percent of .map unit: 9
Hydric soil rating: No
Olney
Percent of map unit:
Hydric soil rating: No
Jul siburg
Percent of map unit:
Hydric snit rating: No
percent
percent
percent
References
American Association of State Highway and Transportation Officials ( HTO).
2004. Standard specifications for transportation materials and methods of sampling
and testing. 24th edition.
American Society for Testing and Materials (ATM). 2005. Standard classification of
soils for engineering purposes. ASTM Standard.. D2487.0o.
o ardin, L.M., V. Carter, E.C. Golet, and E T. LaRoe. 1979. Classification of
wetlands and deep -water habitats of the United States. U.S. Fish and Wildlife
Service FWS/OBS-79131.
-79131.
Federal Register. July 13, 1994. Changes in hydric soils of the United States.
Fec_ieral Register. September 18, 2002. Hydric soils of the United States.,
Hurt. .W., and L.M, Vasilas, editors. Version 6.0, 2006. Field indicators of hydric
soils in the United States.
National Research Council. 1995. Wetlands: Characteristics and boundaries.
Soil Survey Division Staff. 1993. Soil survey manual_ Soil Conservation Service.
U.S. Department of Agriculture Handbook 18.. httpliwvvw.nrcs.usda.gov/Wpsiportali
n cs/'detai I/national soils/?cid=nres142p2 054262
Soil Survey Staff. 1999. Soil taxonomy: A basic system of soil classifieation for
making and interpreting soil surveys. 2nd edition. Natural Resources Conservation
Service, U.S. Departmeit of Agriculture Handbook 436. http://
ww .nres.usda.gov/wps/portal/n res(det ilfr natiiona (soilst?cid=�nr cs142p2_053577
Soil Survey Staff., 2010. Keys to soil taxonomy. 11th edition. U,S„ Department of
Agriculture, Natural Resources Conservation Service. http://
www.nrts usda.gov/wps/po.rtalinrcs/detail/national/sciis/'?cid=nrcsl42p2_053580
Tiner, R.W., Jr. 1985. Wetlands of Delaware. U.S. Fish and Wildlife Service and
Delaware Department of Natural Resources and Environmental Control, Wetlands
Section.
United States Army Corps of Engineers, Environmental LaTioratory.. 1987. Corps of
Engineers wetlands delineation mar ua . Waterways Experiment Station Technical
Report 1r-87-1.
United States Department of Agriculture, Natural Resources Conservation Service.
National forestry manual. http://w,r.nres.usda.gov/wps,t'portal/nr/detail/soilsl
homencid=nrcs142p2 053374
Unitec States Department of Agriculture, Natural Resources Conservation Service.
National range and pasture handbook. http://w .nres..usda.gov/wpsfporta /nres/
detail/national/landuse/rangepasture ` eid=stelprdb1043084
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Custom Soil Resource Report
United States Department of Agriculture, Natural Resources Conservation Service.
National soil survey handbook, title 430$/I. http:(/w .nres.usda.guvJ ps1porta /
nresJd taiilisoilsiscientistsf ' id=nres 14 p _054242
United States Department of Agriculture, Natural Resources ons rvation Service.
2006. Land resource regions and major land resource areas of the United States,
the Caribbean, and the Pacific Basin. I.I.S. Department of Agriculture Handbook
296. http://vvww.nres.us a. ov/wps/portal/nres/d t ail/national/soils/?
cid=nrcs142p2
U nitae States Department of Agriculture, Soil Conservation Service. 1961. Lard
capability classification. U.S. Department of Agriculture Handbook 210. http://
www.nrcs.usda.gov/Internet/FSE DOU ENT /nrc 142p2_052 gc.p f
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