HomeMy WebLinkAboutWATERGLEN PUD PDP - 71 93A - SUBMITTAL DOCUMENTS - ROUND 1 - GEOTECHNICAL (SOILS) REPORT140
Soil name and
map symbol
Paoli:
81------------
Pendergrass:
*82:
Pendergrass
Rock outcrop part.
Pinata:
*83:
Pinata part
Rock outcrop part.
Poudre:
84----------------
Purner:
oC
-----------------
*86:
Purner part
Rock outcrop part.
Ratake:
*87:
Ratake part
Rock outcrop part.
Redfeather:
88 -----------------
Renohill :
89 -----------------
90 -----------------
*91:
Renohill part
Midway part
Riverwash:
92 -----------------
Rock outcrop:
93.
Satanta:
94, 95, 96. 97 --------
SOIL SURVEY
TABLE 9.—Building site development —Continued
Shallow Dwellings without Dwellings with Small commercial Local roads and
excavations basements basements buildings streets
Moderate:
floods.
Severe: depth to
rock;large
stones; slope.
'Severe: slope;
too clayey.
Severe: wetness;
floods.
Severe: depth to
rock.
Severe: depth to
rock; slope.
1
Severe: slope;
depth to rock;
small stones.
Severe: slope;
depth to rock.
Moderate: depth
to rock; too
clayey.
Moderate: depth
to rock; too
clayey.
Moderate: slope;
depth to rock;
too clayey.
Severe: too
clayey.
Severe: floods
Slight
Severe: floods
Severe: depth to
rock;large
stones; slope.
Severe: slope;
shrink -swell.
Severe: floods;
wetness.
Severe: depth to
rock.
Severe: depth to
rock; slope.
Severe: slope;
depth to rock.
Severe: slope;
depth to rock.
Moderate: low
strength; depth
to rock.
Moderate: low
strength; depth
to rock.
Moderate: slope;
low strength;
depth to rock.
Severe:
shrink -swell;
depth to rock.
Severe: floods ---
Moderate:
shrink -swell;
low strength.
Severe: floods ___I Severe: floods
Severe: depth to
rock;large
stones; slope.
Severe: slope;
shrink -swell.
Severe: floods;
wetness.
Severe: depth to
rock.
Severe: depth to
rock; slope.
Severe: slope;
depth to rock.
Severe: slope;
depth to rock.
Severe: low
strength; depth
to rock.
Severe: low
strength; depth
to rock.
Moderate: low
strength; frost
action.
Severe:
shrink -swell.
Severe: floods
Moderate:
shrink -swell;
low strength.
Severe: depth to
rock;large
stones; slope.
Severe: slope;
shrink -swell.
Severe. floods;
wetness.
Severe: depth to
rock.
Severe: depth to
rock; slope.
Severe: slope;
depth to rock;
Severe: slope;
depth to rock.
Moderate: low
strength;
corrosive.
Moderate: slope;
low strength;
corrosive.
Severe: slope;
corrosive.
Severe: slope;
shrink -swell;
corrosive.
Severe: floods ---
Moderate:
shrink -swell;
low strength.
Moderate: floods;
low strength;
frost action.
Severe: depth to
rock; slope.
Severe: slope;
shrink -swell.
Severe: wetness;
low strength.
Severe: depth to
rock.
Severe: depth to
rock; slope.
Severe: slope;
depth to rock.
Severe: slope;
depth to rock.
Severe: low
strength.
Severe: low
strength.
Severe: low
strength.
Severe:
shrink -swell.
Severe: floods.
Moderate:
shrink -swell; :
low strength. o-
V
Soil name and
map symbol
'62—Cont.:
Stoneham part
Longmont:
63-------------
Loveland:
64------------
Midway:
65 ------------
Minnequa:
66-------------
*67:
Minnequa part
LaPorte part .
Miracle:
68 ------------
Naz:
69 ------------'
70 -------------
Nelson:
71------------
Newfork:
72
Nunn:
73. 74, 75
76
Otero:
77----------
78, 79 --------
80:
Otero part
Nelson part
LARIMER COUNTY AREA, COLORADO .
TABLE 9. Building site development -Continued
Shallow Dwellings without Dwellings with Small commercial
excavations I basements I basements I buildings
Slight
Severe: wetness;
floods;too
clayey.
Severe: wetness;
floods.
Severe: slope;
too clayey.
Moderate: depth
to rock.
Moderate: depth
to rock; slope.
Severe: depth to
rock.
Severe: depth to
rock; slope.
Slight -----------
Severe: slope ___-
Severe: depth to
rock.
Severe: wetness;
small stones;
floods.
Moderate: too
clayey.
Severe:
wetness.
Zoderate: frost
action; shrink -
swell.
;evere: wetness;
floods.
Severe: floods;
wetness.
Severe: slope;
shrink -swell.
Slight
Moderate:
slope.
Severe: .depth to
rock.
Severe: slope ___-
Slight -----------
Severe: slope ___-
Moderate: depth
to rock.
Severe: floods;
wetness.
Severe:
shrink -swell.
Severe:
shrink -swell.
Slight ___--------
Slight -------
Slight -----------
Slight -------
Severe: slope ____
Severe: slope
Severe: depth to
Severe: slope
rock; slope.
Moderate: frost
action;
shrink -swell.
Severe: wetness;
floods.
Severe: floods;
wetness.
Severe: slope;
shrink -swell;
depth to rock.
Moderate: depth
to rock.
Moderate: depth
to rock; slope.
Severe: depth to
rock.
Severe: slope;
depth to rock.
Slight -----------
Severe: slope ----
Severe: depth to
rock.
Severe: floods;
wetness.
Moderate: slope;
shrink -swell;
frost action.
Severe: wetness;
floods; corrosive.
Severe: wetness;
floods; corrosive.
139
Local roads and
streets
Severe: low
strength.
Severe: frost
action; wetness;
shrink -swell.
Severe: frost
action; wetness;
shrink -swell.
Severe: slope; Severe: slope;
shrink -swell;
shrink -swell.
corrosive.
Moderate:
Moderate: low
slope.
strength.
Severe: slope ____
Moderate: low
strength; slope.
Severe: depth to
Severe: depth to
rock.
rock.
Severe: slope ___-
Severe: slope.
Slight -----------
Severe: slope ----
Moderate: depth
to rock; slope;
corrosive.
Severe: floods;
wetness.
Moderate:
Severe:
shrink -swell.
shrink -swell;
corrosive.
Severe:
Severe:
wetness.
shrink -swell;
corrosive.
Slight -----------
Slight -------
Slight -----------
Moderate:
slope.
Severe: slope __--
Severe: slope
Severe: depth to
Severe: slope
rock; slope.
Moderate: frost
action.
Severe: slope.
Moderate: depth
to rock; frost
action.
Severe: floods;
wetness.
Severe: shrink -
swell; low
strength.
Severe: shrink -
swell; low
strength.
Slight. -
Slight.
Severe: slope.
Severe: slope.
136
Soil name and
map symbol
Boyle:
14 -----------------
IS-----------------
*16:
Boyle part-------
Ratake part ______
*17:
Boyle part -------
Ratake part ______
Breece:
18 -----------------
19 -----------------
20 -----------------
Carnero:
21 -----------------
Caruso:
22 -----------------
Clergern:
23 -----------------
Connerton:
*24:
Connerton part ---
Barnum part _
*25:
Connerton part
Barnum part
Cushman:
26-----------
27-----------
Driggs:
28-----------
29 -----------
SOIL SURVEY
TABLE 9. Building site development —Continued
Shallow Dwellings without Dwellings with Small commercial
excavations basements basements buildings
Severe: small
stones.
Severe: slope;
small stones.
Severe: small
stones.
Severe: small
stones.
Severe: slope;
small stones.
Severe: slope;
small stones.
Slight ___________
Slight -----------
Severe: slope ----
Severe: depth to
rock.
Severe: floods;
wetness.
Slight _______-
Slight --------
Severe: floods
Slight ____-__-
Severe: floods
Moderate: depth
to rock.
Moderate: depth
to rock.
Severe: cutbanks
cave.
Severe: slope;
cutbanks cave.
Moderate: depth
to rock.
Severe: slope ----
Moderate: depth
to rock.
Moderate: depth
to rock.
Severe: slope ----
Severe: slope ----
Slight -------
Slight -------
Severe: slope
Severe:
shrink -swell.
Severe: floods
Slight __
Moderate:
shrink -swell.
Severe: floods
Moderate:
shrink -swell.
Severe: floods
Moderate:
shrink -swell.
Moderate:
shrink -swell.
Slight ______-
Severe: slope
Local roads and
streets
Moderate: depth Moderate: slope; Moderate: depth
to rock. depth to rock. to rock.
Severe: slope __-_ Severe: slope __-_ Severe: slope.
Moderate: depth
to rock.
Moderate: depth
to rock.
Severe: slope
Severe: slope
Slight ___-_______
Slight -----------
Severe: slope ----
Severe: depth to
rock; shrink -
swell.
Severe: floods;
wetness.
Slight -----------
Moderate:
shrink -swell.
Severe: floods
Moderate:
shrink -swell.
Severe: floods
Moderate:
shrink -swell.
Moderate:
shrink -swell.
Slight ______-
Severe: slope
Moderate: slope;
depth to rock.
Moderate: depth
to rock.
Severe: slope
Severe: slope ___-
Slight
Moderate:
slope.
Severe: slope
Severe: depth to
rock; shrink -
swell; corrosive.
Severe: floods
Slight
Moderate:
shrink -swell;
corrosive.
Severe: floods;
corrosive.
Moderate: slope;
shrink -swell;
corrosive.
Severe: floods;
corrosive.
Moderate:
shrink -swell.
Moderate: slope;
shrink -swell.
Slight -----------
Severe: slope ----
Moderate: depth
to rock.
Moderate: depth
to rock.
Severe: slope.
Severe: slope.
Moderate: frost
action.
Moderate: frost
action.
Severe: slope.
Severe: shrink -
swell; low
strength.
Severe: floods.
Moderate: frost
action.
Moderate:
shrink -swell.
Severe: floods.
Moderate:
shrink -swell.
Severe: floods.
Moderate: frost
action.
Moderate: frost
action.
Moderate: frost
action.
Severe: slope.
LARIMER COUNTY AREA, COLORADO
133
TABLE 8. Soil and water features —Continued
Soil name and
map symbol
Hydro-
logic
Flooding
Depth to
seasonal
high
Bedrock
Potential
frost
group
Frequency
Duration
Months
water
table
Depth
Hardness
action
Feet
Inches
Pinata:
*83:
Pinata part ________
C
None ________
______________
______________
>6.0
40-60
Hard _____
Low.
Rock outcrop part.
Poudre:
84 ___________________
B
Common ____
Very brief ___
April -June ___
0.5-1.0
>60
-----------
Moderate.
Purner:
85-------------------
D
None --------
--------------
--------------
>6.0
10-20
Hard ---'_
Low.
•86:
Purner part -------
D
None ________
______________
______________
>6.0
10-20
Hard _____
Low.
Rock outcrop part.
Ratake:
*87:
Ratake part ________
D
None ________
______________
______________
>6.0
7-20
Rippable __
Moderate.
Rock outcrop part.
Redfeather.
88-------------------
D
None --------
--------------
--------------
>6.0
10-20
Hard -----
Moderate.
Renohill :
89. 90 ________________
C
None ----------------------
______________
>6.0
20-40
Rippable __
Moderate.
*91:
Renohill part -------
C
None ________
______________
______________
>6.0
20-40
Rippable __
Moderate.
Midway part -------
D
None ________
______________
____________
>6.0
10-20
Rippable __
Moderate.
Riverwash:
92-------------------
--------
Frequent ----
Long --------
January-
----------
----------
-----------
December.
Rock outcrop:
93.
Satanta :
94. 95, 96, 97 __________
B
None ________
--------------
--------------
>6.0
>60
-----------
Moderate.
Satanta Variant:
98 ___________________
B
Rare --------
Very brief _-_
April -June ___
8.5-5.0
>60
-----------
Moderate.
Schofield:
*99:
Schofield part ______
B
None ________
______________
_
>6.0
20-40
Hard _____
Moderate.
Redfeather part ____
D
None ________
______________
___-----------
>6.0
10-20
Hard _____
Moderate.
Rock outcrop part.
Stoneham:
100, 101. 102, 103 _______
B
None ________
______________
______________
>6.0
>60
-----------
Moderate.
Sunshine:
104__________________
C
None ________
_ -------------
--------------
>6.0
>60
_ _
---------
High.
Table Mountain:
105 __________________
B
Rare ________
Very brief ___
May -June ___
>6.0
>60
_,_________
Moderate.
Tassel:
106 __________________
D
None --------
--------------
_-_-----------
>6.0
10-20
Rippable __
Low.
Thedalund:
107. 108 ______________
.0
None --------
--------------
--------------
> 6.0
20-40
Rippable __
Moderate.
Thiel:
109------------------
B
None --------
--------------
--------------
>6.0
>60
-----------
Moderate.
132 SOIL SURVEY
TABLE 8. Soil and water features —Continued
Soil name and .
map symbol
Hydro-
logic
group
Flooding
Depth to
seasonal
high
water
Bedrock
Potential
frost
action
Frequency
Duration
Months
Depth
Hardness
table
Feet
inches
Kirtley—Continued :
*58:
Kirtley part ________
C
None ________
______________
______________
>6.0
20-40
Rippable __
Moderate.
Purner part --------
D
None ________
______________
______________
>6.0
10-20
Hard _____
Low.
LaPorte:
*59:
LaPorte part _______
C
None ________
______________
______________
>6.0
10-20
Rippable __
Low.
Rock outcrop part.
Larim:
60=------------------
A
None --------
--------------
--------------
>6.0
>60
-----------
Low.
Larimer:
61-------------------
B
None --------
--------------
--------------
>6.0
>60
-----------
Low.
•62:
Larimer part -------
B
None --------
--------------
--------------
>6.0
>60
-----------
Low.
Stoneham part -----
B
None ________
______________
______________
>6.0
>60
___________
Moderate.
Longmont:
63 ___________________
C
Common ____
Brief _______
March -July __
2.0-2.5
>60
___________
High.
Loveland:
64 ___________________
C
Common ____
Very brief ___
March-
1.5-2.5
>60
------------
High.
September.
Midway:
65___________________
D
None ________
--------------
--------------
>6.0
10-20
Rippable __
Moderate.
Minnequa:
66 ___________________
B
None ________
______________
______________
>6.0
20-40
Rippable __
Low.
*67:
Minnequa part _____
B
None ________
______________
______________
>6.0
20-40
Rippable __
Low.
LaPorte part _______
C
None ________
______________
______________
>6.0
10-20
Rippable __
Low.
Miracle:
68-------------------
B
None --------
--------------
--------------
>6.0
20-40
Hard -----
Moderate.
Naz:
69, 70----------------
A
None --------
--------------
--------------
>6.0
>60
Hard -----
Moderate.
Nelson:
71-------------------
B
None --------
--------------
--------------
>6.0
20-40
Rippable __
Low.
Newfork:
72 ___________________
D
Occasional __-
Brief _______
April -July ___
0.5-4.0
>60
-----------
Low.
Nunn:
73, 74, 75-------------
C
None ------------------------------------
>6.0
>60
-----------
Moderate.
76-------------------
C
None ----------------------
--------------
1.5-2.5
>60
-----------
Moderate.
Otero:
77, 78, 79-------------
B
None ------------------------------------
>6.0
>60
-----------
Low.
*80:
Otero part ---------
B
None --------
--------------
--------------
>6.0
>60
-----------
Low.
Nelson part ________
B
None ________
______________
______________
>6.0
20-40
Rippable __
Low.
Paoli:
81 ___________________
B
Rare --------
Very brief ___
May -June ___
>6.0
>60
___________
Moderate.
Pendergrass:
*82:
Pendergrass part ___
D
None ______________________
______________
>6.0
10-20
Hard -----
Low.
Rock outcrop part.
.130 SOIL SURVEY
TABLE 8.—Soil and water features
[Absence of an entry indicates the feature is not a concern. See text for description of symbols and such terms as "rare... `brief,"
and "perched." Asterisk indicates mapping unit consists of two or more dominant kinds of soils. See mapping unit description for
composition and behavior of the whole mapping unit. The symbol < means less than; > means more than]
Flooding
Depth to
Bedrock
Hydro-
seasonal
Potential
Soil name and
logic
high
frost
map symbol
group
Frequency Duration Months
water
table
Depth Hardness
action
Feet
Inches
Altvan:
B
None
--------------
>6.0
>60
---------- _Moderate.
1. 2------------------
-------- --------------
"3, 4:
Altvan part --------
B
None --------
--------------
--------------
>6.0
>6.0
>60
>60
-----------
Moderate.
Moderate.
Satanta part -------
B
None --------
--------------
--------------
-----------
Aquepts:
5
D
Rare --------
--------------
--------------
0.5-1.5
----------
-----------
High.
--------------------
6---------------- ----
D
Frequent ----
Long --------
April -June ---
0-1.5
----------
-----------
High.
Ascalon:
B
None
--------------
>6.0
>60
-----------
Moderate.
7, e------------------
--------
--------------
Bainville:
"9.
Bainville part ------
C
None --------
--------------
--------------
>6.0
>6.0
20-40
9-20
Rippable __
Rippable __
Moderate.
Moderate.
Epping part --------
D
None --------
--------------
--------------
"10:
Bainville part
C
None --------
--------------
--------------
>6.0
20-40
Rippable __
Moderate.
------
Keith part ---------
B
None --------
--------------
--------------
>6.0
>60
-----------
Moderate.
Baller:
"II:
Baller part ---------
D
None --------
--------------
--------------
>6.0
>6.0
10-20
20-40
Hard -----
Hard
Low.
Moderate.
Carnero part -------
C
None --------
--------------
--------------
_____
"12:
Baller part ---------
D
None --------
--------------
--------------
>6.0
10-20
Hard -----
Low.
Rock outcrop part.
Blackwell:
13-------------------
D
Common ----
Brief -------
May -June _--
1.5
>60
-----------
High.
Boyle:
14, 15 ----------------
D
None --------
--------------
--------------
>6.0
9-20
Rippable __
Moderate.
"Ib,
Boyle part
D
None --------
--------------
-----------_-_
> 6.0
9-20
Rippable __
PP
Moderate.
---------
Ratake part --------
D
None --------
--------------
--------------
>6.0
7-20
Rippable __
Moderate.
Breece:
18. 19. 20-------------
B
None --------
--------------
--------------
>6.0
>60
-----------
Moderate.
Carnero:
None --------
--------------
- -------------
> 6.0
20-40
Hard _____
Moderate.
Caruso:
22
C
Occasional ___
Very brief -_-
April-
>2.0
>60
__ _-__-_-_-
Moderate.
-------------------
September.
Clergern:
g
None
--------------
--------------
>6.0
>60
-----------
Moderate.
--------
Connerton:
"24, 25:
Connerton part -----
B
B
None --------
Occasional
--------------
Brief
--------------
May -July _-_-
>6.0.
>6.0
>60
>60
_________--
-----------
Moderate.
Moderate.
Barnum part -------
___
_______
Cushman:
26, 27 ----------------
C
None __-_----
--------------
--------------
>6.0
20-40
Rippable __
Moderate.
Driggs :
28, 29 ----------------
B
None --------
--------------
--------------
>6.0
>60
-----------
Moderate.
50
SOIL SURVEY
C2ca-44 to 60 inches; very pale brown (10YR
7/3) fine sandy loam, brown (10YR 5/3)
moist; massive; soft, very friable; vio-
lently effervescent; visible secondary
calcium carbonate as seams and streaks;
moderately alkaline.
The A horizon is loam or light clay loam 4 to 11
inches thick. The B horizon is loam or light clay loam.
Thickness of the mollic epipedon ranges from 7 to 18
inches. Reaction ranges from neutral to moderately
alkaline. Depth to calcareous material ranges from 15
to 20 inches.
94—Satanta loam, 0 to 1 percent sloes. This level
soil is on terraces and uplands. This soil has a profile
similar to the one described as representative of the
series, but the combined thickness of the surface layer
and subsoil is about 24 inches.
Included with this soil in mapping are a few areas
of soils that are more sloping. Also included are small
areas of Fort Collins and Nunn soils.
Runoff is slow, and the hazard of erosion is slight.
If irrigated, this soil is well suited to corn, sugar
beets, beans, alfalfa, barley, and wheat. Under dryland
management it is suited to wheat and barley. It is also
well suited to pasture or native grasses. Capability
units I, irrigated, and IIIc-1, dryland; Loamy Foothill
range site; windbreak suitability group 1.
95—Satanta loam, 1 to 3 percent slopes. This nearly
level soil is on terraces and uplands. This soil has the
profile described as representative of the series.
Included with this soil in mapping are a few small
areas of soils that are more sloping or less sloping.
Also included are a few small areas of Fort Collins,
Nunn, and Altvan soils.
Runoff is slight, and the hazard of erosion is slight
to moderate.
If irrigated, this soil is suited to corn, sugar beets,
beans, alfalfa, barley, and wheat. Under dryland
management it is suited to wheat and barley. It is also
well suited to pasture and native grasses. Capability
units IIe-1, irrigated, and IIIe-6, dryland; Loamy
Foothill range site; windbreak suitability group 1.
96—Satanta loam, 3 to 5 percent slopes. This gently
sloping soil is on terraces and uplands. This soil has a
profile similar to the one described as representative of
the series, but the combined thickness of the surface
layer and subsoil is about 18 inches.
Included with this soil in mapping are some small
areas of soils that are more sloping or less sloping.
Also included are small areas of Fort Collins, Nunn,
and Altvan soils.
Runoff is medium, and the hazard of erosion is
moderate.
If irrigated, this soil is suited to barley, wheat, and
alfalfa and, to a lesser extent, corn, sugar beets, and
beans. Under dryland management it is suited to wheat
and barley. It is also well suited to pasture and native
grasses. Capability units IIIe-2, irrigated, and IIIe-7,
dryland; Loamy Foothill range site; windbreak suit-
ability group 1.
97—Satanta loam, sullied, 3 to 9 percent slopes. This
gently sloping to strongly sloping soil is on uplands
and side slopes. It receives runoff from adjacent,
higher -lying, shallow soils. This soil has a profile
similar to the one described as representative of the
series, but the combined thickness of the surface layer
and subsoil is about 15 inches.
Included with this soil in mapping are a few areas of
soils that have gravel on the surface. Also included are
a few small areas of Carnero and Kim soils, many
gullies as much as 15 feet wide and 10 to 12 feet deep,
and many smaller gullies between.
Runoff is medium to rapid, and the hazard of erosion
is severe.
This soil is best suited to pasture and native grasses.
If runoff from adjacent areas can be diverted, wheat
and barley can be grown. Capability unit IVe-4, dry -
land; Loamy Foothill range site; not assigned to a
windbreak suitability group.
Satanta Variant
This variant consists of deep, somewhat poorly
drained soils that formed in alluvium. These soils are
on terraces and are underlain by material high in con-
tent of calcium sulfate at a depth of 20 to 40 inches.
Elevation ranges from 4,800 to 5,600 feet. Slopes are
0 to 3 percent. The native vegetation is saltgrass, blue-
grass, sedges, and other water -tolerant grasses. Mean
annual precipitation ranges from 13 to 15 inches, mean
annual air temperature ranges from 481 to 501 F, and
the frost -free season ranges from 135 to 150 days.
In a representative profile the surface layer is dark
grayish brown clay loam about 9 inches thick. The
subsoil is grayish brown, light brownish gray, and
light gray clay loam about 17 inches thick. The under-
lying material is white loam about 9 inches thick and
light gray sandy loam about 25 inches thick.
Permeability is moderate, and the available water
capacity is high. Reaction is moderately alkaline.
These soils are used for irrigated and dryfarmed
crops and for pasture.
Representative profile of Satanta Variant clay loam,
0 to 3 percent slopes, in irrigated cropland, 1,000 feet
east and 1,150 feet south of the northwest corner of
sec. 1, T. 6 N., R. 68 W.:
Ap-0 to 9 inches; dark grayish brown (10YR
4/2) clay loam, very dark grayish brown
(10YR 3/2) moist; moderate fine gran-
ular structure; slightly hard, friable;
calcareous; moderately alkaline;* clear
smooth boundary.
131-9 to 14 inches; grayish brown (10YR 5/2)
clay loam, dark grayish brown (10YR
4/2) moist; moderate fine subangular
blocky structure; hard, friable; thin
patchy clay films on peds; calcareous;
moderately alkaline; clear smooth bound-
ary.
B2t-14 to 22 inches; light brownish gray (10YR
6/2) clay loam, dark grayish brown
(10YR 4/2) moist; moderate medium
prismatic structure parting to moderate
fine and medium angular and subangular
blocky; hard, friable; thin patchy clay
films on peds; calcareous; moderately
alkaline; clear smooth boundary.
B3cs-22 to 26 inches; light gray (10YR 7/2)
LARIMER COUNTY AREA, COLORADO
43
Capability units IIe-1, irrigated, and IIIe-6, dryland;
Clayey Foothill range site; windbreak suitability group
1.
75—Nunn clay loam, 3 to 5 percent slopes. This
gently sloping soil is on high terraces and fans. This
soil has a profile similar to the one described as rep-
resentative of the series, but the combined thickness
of the surface layer and subsoil is about 24 inches.
Included with this soil in mapping are small areas
of soils that are more sloping or less sloping and a few
small areas of soils that have a surface layer of light
clay. Also included are a few small areas of Satanta
and Ulm soils.
Runoff is medium. The hazard of water erosion is
moderate, and the hazard of wind erosion is slight.
If irrigated, this soil is suited to barley, alfalfa, and
wheat and, to a lesser extent, corn, sugar beets, and
beans. Under dryland management it is suited to wheat
or barley. It is also well suited to pasture and native
grasses. Capability units IIIe-2, irrigated, and IIIe-7,
dryland; Clayey Foothill range site; windbreak suit-
ability group 1.
76—Nunn clay loam, wet, 1 to 3 percent slopes. This
nearly level, somewhat poorly drained soil is on low
terraces and alluvial fans, commonly adjacent to
drainageways. This soil has a profile similar to the one
described as representative of the series, but a seasonal
high water table is at a depth of 20 to 30 inches during
part of the growing season.
Included with this soil in mapping are a few small
areas of soils that have a strongly alkaline surface
layer and a few small areas of soils that are moderately
well drained. Also included are a few areas of soils
that have a surface layer of loam or clay and a few
areas of soils that are less sloping.
Runoff is slow, and the hazard of erosion is slight.
This soil is suited to pasture and hay. If the water
table is lowered by management practices, corn, sugar
beets, wheat, and barley can be grown. Capability unit
111w-1, irrigated; Wet Meadow range site; windbreak
suitability group 5.
Otero Series
The Otero series consists of deep, well drained soils
that formed in alluvium and wind -deposited material.
These soils are on alluvial fans and terraces. Elevation
ranges from 4,800 to 5,600 feet. Slopes are 0 to 15
percent. The native vegetation is mainly blue grama,
needlegrass, bluestems, and some forbs and shrubs.
Mean annual precipitation ranges from 13 to 15 inches,
mean annual air temperature ranges from 48' to 50'
F, and the frost -free season ranges from 135 to 150
days.
In a representative profile the surface layer is brown
sandy loam about 4 inches thick. The underlying
material is pale brown sandy loam about 13 inches
thick over light brownish gray sandy loam.
Permeability is rapid, and the available water ca-
pacity is medium. Reaction is mildly alkaline above a
depth of about 4 inches and moderately alkaline below
that depth.
These soils are used mainly for native grasses and
for dryfarmed crops. A few areas are used for ir-
rigated crops.
Representative profile of Otero sand yy loam in an
area of Otero -Nelson sandy loams, 3 to 25 percent
slopes, in native grass, about 300 feet south and 1,420
feet west of the northeast corner of sec. 11, T. 10 N.,
R. 68 W. :
A1=0 to 4 inches; brown (10YR 5/3) sandy
loam, dark brown (10YR 3/3) moist;
weak very fine granular structure; soft,
very friable; calcareous; mildly alka-
line; clear smooth boundary.
Clca-4 to 17 inches; pale brown (10YR 6/3)
sandy loam, brown. (10YR 5/3) moist;
weak medium and coarse subangular
blocky structure; hard, very friable; cal-
careous; visible calcium carbonate as few
soft spots; moderately alkaline; gradual
smooth boundary.
C2ca-17 to 60 inches; light brownish gray
(10YR 6/2) sandy loam, dark grayish
brown (10YR 4/2) moist; massive; hard,
very friable; calcareous; visible calcium
carbonate as few soft spots; moderately
alkaline.
The A horizon is sandy loam or fine sandy loam 8 to
12 inches thick in cultivated areas. The C horizon is
sandy loam or fine sandy loam. The soil is generally
calcareous throughout, but the surface layer is leached
in places: Distribution of lime in the profile is erratic.
Soft sandstone is at a depth of 40 to 60 inches in some
profiles.
77—Otero sandy loam, 0 to 3 percent slopes. This
nearly level soil is on uplands and fans. This soil has a
profile similar to the one described as representative of
the series, but the surface layer is about 10 to 12
inches thick.
Included with this soil in mapping are some small
areas of soils that have a surface layer of loam or fine
sandy loam. Also included are some areas of soils that
are redder and a few small areas of Ascalon, Nelson,
and Kim soils.
Runoff is slow. The hazard of water erosion is slight,
and the hazard of wind erosion is moderate.
If irrigated, this soil is suited to corn, barley, sugar
beets, wheat, and beans. Under dryland management
it is suited to pasture and native grasses and, to a
lesser extent, wheat and barley. Capability units
IIIe-5, irrigated, and IVe-5, dryland; Sandy Plains
range site; windbreak suitability group 2.
78—Otero sandy loam, 3 to 5 percent slopes. This
gently sloping soil is on uplands and fans. This soil
has a profile similar to the one described as representa-
tive of the series, but the surface layer is about 8
inches thick.
Included with this soil in mapping are a few small
areas of soils that are more sloping or less sloping.
Also included are some small areas of soils in which
sandstone is at a depth of 40 to 60 inches and a few
small areas of Ascalon, Nelson, and Kim soils.
Runoff is medium, and the hazard of erosion is
moderate.
If irrigated, this soil is suited to barley, wheat,
alfalfa, and pasture and, to a lesser extent, corn and
beans. Under dryland management it is well suited to
pasture and native grasses. Capability units IIIe-4,
irrigated, and VIe-2, dryland; Sandy Plains range
site; windbreak suitability group 2.
42
SOIL SURVEY
4/3) moist; moderate medium and coarse
prismatic structure parting to moderate
medium subangular blocky; very. hard,
firm, very sticky and very plastic; thin
nearly continuous clay films on peds;
noncalcareous; mildly alkaline; clear
smooth boundary.
B3ca-24 to 29 inches; pale brown (10YR 6/3)
clay loam, brown (10YR 5/3) moist;
weak medium subangular blocky struc-
ture; very hard, firm, very plastic; few
thin patchy films. on ped faces; visible
calcium carbonate occurring as small
nodules; calcareous; moderately alka-
line; gradual smooth boundary.
Clca-29 to 47 inches; light yellowish brown
(10YR 6/4) clay loam, dark yellowish
brown (10YR 4/4) moist; massive; very
hard, firm, sticky and plastic; visible
calcium carbonate occurring as nodules,
thin seams, and streaks; calcareous;
moderately alkaline; gradual smooth
boundary.
C2ca-47 to 60 inches; light yellowish brown
(2.5Y 6/3) clay loam, light olive brown
(2.5Y 5/3) moist; massive; very hard,
firm, sticky and plastic; some visible
calcium carbonate but less than in the
Clca horizon; calcareous; moderately
alkaline.
The A horizon is light clay loam or clay loam 10 to
12 inches thick in cultivated areas. The combined thick-
ness of the A and B horizons ranges from 16 to 40
inches. The B2t horizon is heavy clay loam or light
clay. Depth to calcareous material ranges from 10 tc
30 inches. Sand and gravel are below a depth of 40
inches in some profiles. Some profiles have substrata
with a redder hue.
73—Nunn clay loam, 0 to 1 percent slopes. This
level soil is on high terraces and fans. This soil has a
profile similar to the one described as representative of
the series, but the combined thickness of the surface
layer and subsoil is about 35 inches.
Included with this soil in mapping are small areas
of soils that are more sloping. Also included are a few
small areas of Satanta, Fort Collins, and Ulm soils and
a few small areas of soils that have a surface layer and
subsoil of silty clay loam.
Runoff is slow, and the hazard of erosion is slight.
If irrigated, this soil is suited to corn, sugar beets,
beans, barley, wheat, and alfalfa. Under dryland
management it is suited to wheat or barley. It is also
suited to pasture and native grasses. Capability units
Its-1, irrigated, and IIIc-1, dryland; Clayey Foothill
range site; windbreak suitability group 1.
74—Nunn clay loam, 1 to 3 percent slopes. This
nearly level soil is on high terraces and fans. This soil
has the profile described as representative of the
series.
Included with this soil in mapping are a few small
areas of soils that are more sloping or less sloping and
a few small areas of soils that have a surface layer and
subsoil of silty clay loam. Also included are small areas
of Satanta, Fort Collins, and Ulm soils.
Runoff is slow to medium, the hazard of wind erosion
is slight, and the hazard of water erosion is moderate.
If irrigated, this soil is suited to corn, sugar beets,
beans, barley, alfalfa, and wheat. Under dryland
management it is suited to wheat and barley. It is also
well suited to pasture or native grasses (fig. 10).
Figure 10.—Alfalfa bales on Nunn clay loam, 1 to 3 percent slopes.
36
SOIL SURVEY
beets. Under dryland management it is well suited to
pasture or native grasses and, to a lesser extent, wheat
and barley. Capability units IIIe-5, irrigated, and
IVe-5, dryland; Loamy Plains range site; windbreak
suitability group 2.
62-1,arimer-Stoneham complex, 3 to 10 percent
slopes. This complex consists of gently sloping to
strongly sloping soils on terraces, fans, and benches.
It is about 35 percent Larimer fine sandy loam, about
25 percent Stoneham loam, and about 20 percent
Cushman fine sandy loam. Larimer fine sandy loam is
on side slopes and areas near terrace edges, Stoneham
loam commonly has the more gentle slopes on terraces,
and Cushman fine sandy loam is on side slopes.
Included with these soils in mapping are about 20
percent areas of Fort Collins, Larim, Altvan, and
Satanta soils. Also included are some small areas of
soils that are more sloping.
Runoff is medium to rapid, and the hazard of erosion
is moderate to severe.
This soil is well suited to pasture and native grasses
under dryland management. If irrigated, it is suited
to pasture and, to a lesser extent, barley, wheat, and
alfalfa. Capability units IVe-1, irrigated, and VIe-2,
dryland; Loamy Plains range site; windbreak suit-
ability group 2.
Longmont Series
The Longmont series consists of deep, poorly
drained soils that formed in alluvium mainly from
clay shale. These soils are on flood plains, terraces, and
valleys. Elevation ranges from 4,800 to 5,800 feet.
Slopes are 0 to 3 percent. The native vegetation is
mainly alkali sacaton, saltgrass, sedges, and other
water -tolerant grasses. Mean annual precipitation
ranges from 13 to 15 inches, mean annual air tempera-
ture ranges from 480 to 500 F, and the frost -free sea-
son ranges from 135 to 150 days.
In a representative profile the surface layer is light
brownish gray clay about 17 inches thick. The under-
lying material is mottled pale olive clay.
Permeability is slow, and the available water ca-
pacity is high. Reaction is strongly alkaline above a
depth of 40 inches and moderately alkaline below that
depth.
These soils are used for native grasses.
Representative profile of Longmont clay, 0 to 3 per-
cent slopes, in native grass, about 1,350 feet east and
50 feet north of the southwest corner of sec. 17, T. 6 N.,
R. 68 W.:
A11-0 to 7 inches; light brownish gray (2.5Y
6/2) clay, dark grayish brown (2.5Y
4/2) moist; weak medium subangular
blocky structure; hard, very firm;
strongly effervescent; strongly alkaline;
clear smooth boundary.
Al2-7 to 17 inches; light brownish gray (2.5Y
6/2) clay, dark grayish brown (2.5Y
4/2) moist; weak coarse subangular
blocky structure; very hard, very firm;
strongly effervescent; strongly alkaline;
gradual wavy boundary.
Clcscag-17 to 40 inches; pale olive (5Y 6/3)
clay, olive (5Y 4/3) moist; massive;
very hard, very firm; common medium
distinct mottles of yellowish brown
(10 YR 5/6) moist; calcium sulfate ac-
cumulations in seams and streaks and
calcium carbonate in spots; strongly
effervescent; strongly alkaline; gradual
wavy boundary.
C2cscag-40 to 60 inches; pale olive (5Y 6/3)
clay, olive (5Y 5/3) moist; massive;
very hard, very firm; common medium
distinct mottles of olive (5Y 4/3 and
4/4) moist; calcium sulfate accumula-
tions in seams and streaks and calcium
carbonate in spots; strongly efferves-
cent; moderately alkaline.
The A horizon is clay loam or clay 12 to 21 inches
thick. The C horizon is heavy clay loam or clay. Reac-
tion is strongly alkaline or very strongly alkaline in
the surface layer but decreases with increasing depth.
The water table is near the surface for part of every
year.
63—Longmont clay, 0 to 3 percent slopes. This
nearly level soil is on flood plains and upland valleys.
Included with this soil in mapping are some small
areas of soils that are more sloping and a few small
areas of soils that have a surface layer and subsurface
layer of clay loam. Also included are a few small areas
of soils in which gravel is at a depth of 40 to 60
inches.
Runoff is slow, and the hazard of erosion is slight.
This soil is suited to pasture or native grasses
(fig. 9). Capability unit VIw-2, dryland; Salt Meadow
range site; windbreak suitability group 4.
Loveland Series
The Loveland series consists of deep, somewhat
poorly drained soils that formed in material weathered
from alluvium. These soils are on terraces and flood
plains and are underlain by sand and gravel at a depth
of 20 to 40 inches. Elevation ranges from 4,800 to
5,500 feet. Slopes are 0 to 1 percent. The native vegeta-
tion is mainly blue grams, bluegrass, and sedges. Mean
annual precipitation ranges from 13 to 15 inches, mean
annual air temperature ranges from 48° to 500 F, and
the frost -free season ranges from 135 to 150 days.
In a representative profile the surface layer is mot-
tled dark grayish brown or grayish brown clay loam
about 15 inches thick. The underlying material is 17
inches of grayish brown clay loam over sand, gravel,
and cobbles.
Permeability is moderately slow above a depth of
about 32 inches and very rapid below that depth. The
available water capacity is medium to high. Reaction
is mildly alkaline above a depth of about 8 inches and
moderately alkaline below that depth.
These soils are used mainly for irrigated and dry -
farmed crops and for pasture.
Representative profile of Loveland clay loam, 0 to 1
percent slopes, in grass, 2,250 feet north and 600 feet
west of the southeast corner of sec. 10, T. 6 N., R. 68
W.:
A11-0 to 8 inches; dark grayish brown (10YR
4/2) clay loam, very dark brown (10YR
2/2) moist; weak to moderate fine gran-
18
SOIL SURVEY
management it is suited to wheat or barley. It is also
well suited to pasture and native grasses. Capability
units IVe-1, irrigated, and IVe-3, dryland; Loamy
Foothill range site; not assigned to a windbreak suit-
ability group.
Caruso Series
The Caruso series consists of deep, somewhat poorly
drained soils that formed in mixed alluvium. These
soils are on low terraces and bottom lands. Elevation
ranges from 4,800 to 5,500 feet. Slopes are 0 to 1 per-
cent. The native vegetation is mainly inland saltgrass,
alkali sacaton, sedges, and other water -tolerant
grasses. Mean annual precipitation ranges from 13 to
15 inches, mean annual air temperature ranges from
481 to 50' F, and the frost -free season ranges from
135 to 150 days.
In a representative profile the surface layer is gray-
ish brown clay loam about 11 inches thick. The under-
lying material is stratified pale brown, light brown,
and grayish brown clay loam, silty clay loam, fine
sandy loam, and loamy fine sand. Below this is sand
and gravel.
Permeability is moderately slow above a depth of
about 25 inches and moderately rapid or rapid below
that depth. The available water capacity is medium to
high. Reaction is mildly alkaline or moderately alkaline
above a depth of 25 inches and mildly alkaline below
that depth.
These soils are mainly used for irrigated crops and
pasture. A few areas are used for dryfarmed crops
and pasture.
Representative profile of Caruso clay loam, 0 to 1
percent slopes, in dryland pasture, about 100 feet east
of picnic area in the NE1/4 sec. 34, T. 7 N., R. 68 W.:
A1-0 to 11 inches; grayish brown (10YR 5/2)
clay loam, very dark grayish brown
(10YR 3/2) moist; weak fine subangular
blocky structure; hard, friable; strongly
effervescent; mildly alkaline; clear
smooth boundary.
C1-11 to 17 inches; pale brown (10YR 6/3 )
clay loam, brown (10YR 5/3) moist;
common medium distinct brown (7.5YR
4/4) mottles; weak medium subangular
blocky structure; very hard, friable;
strongly effervescent; moderately alka-
line; clear smooth boundary.
C2-17 to 25 inches; light brown (7.5YR 6/4)
silty clay loam, brown (7.5YR 4/4)
moist; common fine faint reddish brown
(5YR 4/4) mottles; weak fine sub -
angular blocky structure; very hard, fri-
able; strongly effervescent; moderately
alkaline; clear smooth boundary.
C3-25 to 35 inches; grayish brown (10YR 5/2)
fine sandy loam, very dark grayish brown
(10YR 3/2) moist; common fine faint
yellowish brown (10YR 5/4) mottles;
massive; very hard, friable; faintly ef-
fervescent; mildly alkaline; clear smooth
boundary.
C4-35 to 44 inches; grayish brown (10YR 5/2)
loamy fine sand, dark brown (10YR
3/3) moist; common medium prominent
strong brown (7.5YR 5/6) mottles;
massive; hard, very friable; mildly alka-
line; gradual smooth boundary.
IIC5--44 to 60 inches; stratified sand and gravel.
The A horizon is heavy loam or clay loam 8 to 18
inches thick. The underlying C horizon is sandy loam,
loam, clay loam, or silty clay loam. It has thin layers
of loamy fine sand in places, but is mainly loam or
light clay loam. It is stratified and generally mottled
and is underlain by clean sand and gravel below a
depth of about 40 inches. Reaction ranges from mildly
alkaline to moderately alkaline.
22—Caruso clay loam, 0 to 1 percent elopes. This
level soil is on low terraces and bottom lands.
Included with this soil in mapping are a few areas
of soils that are more sloping. Also included are small
areas of Loveland soils and a few minor areas of
gravel bars.
Runoff is slow, and the hazard of erosion is slight.
If irrigated, this soil is suited to barley and sugar
beets and, to a lesser extent, corn. It is also well
suited to pasture and native grasses. Capability units
IIIw-1, irrigated, and Vw-1, dryland; Wet Meadow
range site; windbreak suitability group 5.
Clergern Series
The Clergern series consists of deep, well drained
soils that formed in alluvium and valley -filling material
from reddish sandstone and shale. These soils are in
valleys and on side slopes. Elevation ranges from 7,500
to 8,500 feet. Slopes are 0 to 10 percent. The native
vegetation is mainly needleandthread, slender wheat -
grass, bluebunch wheatgrass, fringed sage, and rabbit -
brush. Mean annual precipitation ranges from 12 to 14
inches, mean annual air temperature ranges from 421
to 46' F, and the frost -free season ranges from 75 to
100 days.
In a representative profile the surface layer is
reddish brown fine sandy loam about 12 inches thick.
The underlying material is reddish brown and light
reddish brown fine sandy loam.
Permeability is moderately rapid, and the available
water capacity is high. Reaction is neutral above a
depth of about 12 inches and mildly alkaline below
that depth.
These soils are used for native grasses.
Representative profile of Clergern fine sandy loam,
2 to 10 percent slopes, in native grass, about 800 feet
south and 1,500 feet west of the northeast corner of
sec. 27, T. 12 N., R. 75:
A11-0 to 6 inches; reddish brown (5YR 5/3)
fine sandy loam, dark reddish brown
(5YR 3/3) moist; weak to moderate fine
granular structure; soft, very friable;
slightly effervescent; neutral; clear
smooth boundary.
Al2-6 to 12 inches; reddish brown (5YR 5/3)
fine sandy loam, dark reddish brown
(5YR 3/3) moist; weak medium sub -
angular blocky structure; slightly hard,
very friable; slightly effervescent; neu-
tral; clear smooth boundary.
C1-12 to 30 inches; reddish brown (5YR 5/4)
SHEET NO.25
LARIMER COUNTY AREA, COLORADO
(FORT COLLINS QUADRANGLE)
R. 69 W. R. 68 W. 104.00'
5 .. - — 40'37'30„
e 5 74 55 .,i _.
02
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WATERGLEN PUD
PHYSIOGRAPHIC DATA
October 25, 1993