Soil Survey of McHenry County, Illinois Part I - Soil Data Mart

McHenry County, Illinois—Part I 137
Dissimilar soils:
• the somewhat poorly drained Kane soils in the
lower positions on the landform
• the poorly drained Will soils in depressions and
drainageways
Management
For general and detailed information about
managing this map unit, see the following sections in
Part II of this publication:
• “Agronomy” section
• “Wildlife Habitat” section
• “Engineering” section
• “Soil Properties” section
Waupecan Series
Drainage class: Well drained
Permeability: Moderate in the upper part and very
rapid in the lower part
Landform: Outwash plains, stream terraces, and
kames
Parent material: Silty material and the underlying
loamy and gravelly outwash
Slope range: 0 to 4 percent
Taxonomic classification: Fine-silty, mixed, mesic
Typic Argiudolls
Typical Pedon for MLRA 95B
Typical pedon of Waupecan silt loam, 0 to 2 percent
slopes, 225 feet south and 1,455 feet west of the
northeast corner of sec. 21, T. 42 N., R. 6 E.
Ap—0 to 8 inches; very dark gray (10YR 3/1) silt loam,
dark grayish brown (10YR 4/2) dry; moderate
medium granular structure; friable; common very
fine roots; neutral; abrupt smooth boundary.
A—8 to 13 inches; very dark grayish brown (10YR
3/2) silt loam, grayish brown (10YR 5/2) dry;
moderate medium granular structure; friable;
common very fine roots; slightly acid; clear
smooth boundary.
BA—13 to 19 inches; brown (10YR 4/3) silt loam;
weak very fine subangular blocky structure; firm;
common very fine roots; common distinct very
dark grayish brown (10YR 3/2) organic coatings in
pores; slightly acid; clear smooth boundary.
Bt1—19 to 28 inches; dark yellowish brown (10YR
4/4) silty clay loam; moderate medium subangular
blocky structure; firm; common very fine roots;
common distinct brown (10YR 4/3) clay films on
faces of peds; moderately acid; clear smooth
boundary.
Bt2—28 to 38 inches; dark yellowish brown (10YR
4/4) silty clay loam; moderate medium and coarse
subangular blocky structure; firm; few very fine
roots; common distinct brown (10YR 4/3) clay
films on faces of peds; moderately acid; abrupt
smooth boundary.
2Bt3—38 to 44 inches; dark yellowish brown (10YR
4/4) clay loam; moderate medium and coarse
subangular blocky structure; firm; few very fine
roots; common distinct brown (7.5YR 4/3) clay
films on faces of peds; 1 percent dolomitic
pebbles; moderately acid; clear smooth boundary.
2Bt4—44 to 49 inches; brown (7.5YR 4/4) sandy clay
loam; weak coarse subangular blocky structure;
friable; few very fine roots; many distinct dark
brown (7.5YR 3/4) clay films on faces of peds; 2
percent dolomitic pebbles; slightly acid; clear
smooth boundary.
2Bt5—49 to 55 inches; brown (7.5YR 4/4) sandy
loam; weak coarse subangular blocky structure;
friable; many distinct dark brown (7.5YR 3/3) clay
films on faces of peds; 8 percent dolomitic
pebbles; neutral; abrupt smooth boundary.
3C—55 to 70 inches; brown (10YR 5/3) gravelly sand;
single grain; loose; 32 percent dolomitic pebbles
and cobblestones; strongly effervescent;
moderately alkaline.
MLRA Series Range in Characteristics
Thickness of the mollic epipedon: 10 to 18 inches
Thickness of silty material: 24 to 48 inches
Depth to sandy and gravelly deposits: 40 to 60 inches
Depth to carbonates: 40 to 60 inches
Thickness of the solum: 40 to 65 inches
Ap or A horizon:
Hue—10YR
Value—2 or 3
Chroma—1 or 2
Texture—silt loam
Bt horizon:
Hue—10YR
Value—4 or 5
Chroma—3 to 6
Texture—silty clay loam or silt loam
2Bt horizon:
Hue—7.5YR or 10YR
Value—3 to 5
Chroma—3 to 6
Texture—loam, clay loam, sandy clay loam, silt
loam, sandy loam, or the gravelly analogs of
these textures
Content of gravel—0 to 30 percent