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

McHenry County, Illinois—Part I 29
friable; 4 percent gravel; strongly effervescent;
slightly alkaline; clear smooth boundary.
2C2—71 to 80 inches; brown (10YR 5/3) gravelly
sandy loam; massive; friable; 25 percent gravel;
strongly effervescent; slightly alkaline.
MLRA Series Range in Characteristics
Thickness of silty material: 24 to 40 inches
Depth to carbonates: Greater than 40 inches
Thickness of the solum: 40 to 62 inches
Ap or A horizon:
Hue—10YR
Value—3 or 4 (6 or 7 dry)
Chroma—2 or 3
Texture—silt loam
E horizon (if it occurs):
Hue—10YR
Value—4 to 6
Chroma—2 to 4
Texture—silt loam
Bt horizon:
Hue—7.5YR or 10YR
Value—4 or 5
Chroma—3 to 6
Texture—silty clay loam or silt loam
2Bt horizon:
Hue—7.5YR or 10YR
Value—4 to 6
Chroma—3 to 6
Texture—silt loam, loam, sandy loam, clay loam,
or sandy clay loam
2C horizon:
Hue—7.5YR or 10YR
Value—4 to 6
Chroma—3 to 6
Texture—silt loam, loam, or sandy loam with strata
of coarser textures
134A—Camden silt loam, 0 to 2 percent
slopes
Setting
Landform: Outwash plains and stream terraces
Position on the landform: Summits
Slope range: 0 to 2 percent
A typical soil series description with range in
characteristics is included, in alphabetical order, in this
section. Additional information specific to this map
unit, such as horizon depth and textures, is available
in the “Soil Properties” section in Part II of this
publication.
Composition
Camden and similar soils: 85 percent
Dissimilar soils: 15 percent
Similar soils:
• soils that contain less sand and more silt in the
middle part of the subsoil
• soils that have a darker surface layer
• soils that contain sandy and gravelly deposits at a
depth of less than 60 inches
• soils that have a seasonal high water table at a
depth of less than 6 feet
Dissimilar soils:
• the somewhat poorly drained Millbrook soils in the
lower positions on the landform
• the poorly drained Pella soils in drainageways
• the loamy Fox soils in positions on the landform
similar to those of the Camden soil
Management
For general and detailed information about
managing this map unit, see the following sections in
Part II of this publication:
• “Agronomy” section
• “Forestland” section
• “Wildlife Habitat” section
• “Engineering” section
• “Soil Properties” section
134B—Camden silt loam, 2 to 5 percent
slopes
Setting
Landform: Outwash plains and stream terraces
Position on the landform: Summits, shoulders, and
backslopes
Slope range: 2 to 5 percent
A typical soil series description with range in
characteristics is included, in alphabetical order, in this
section. Additional information specific to this map
unit, such as horizon depth and textures, is available
in the “Soil Properties” section in Part II of this
publication.
Composition
Camden and similar soils: 85 percent
Dissimilar soils: 15 percent
Similar soils:
• soils that contain less sand and more silt in the
middle part of the subsoil
• soils that have a darker surface layer