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Table Ge01: Soil Characterists of the Meramec River Watershed

Table Ge01: Soil Characteristics of the Meramec River Watershed

Characteristics of the generalized soil associations (SCS 1979) related to hydrology, water management, erosion and runoff within the Meramec River basin (SCS Franklin Co. Soil Survey 1989, Dent Co. Soil Survey 1971, Iron Co. Soil Survey 1991, St. Louis Co. Soil Survey 1982)

Soil Name Feature Affects Water Erosion Factors2 Water Features
Grassed Waterway1 Drainage K T Hydro-Soil Group3 Water Capacity4
Menfro Erodes easily Deep to water 0.37 5 B 0.20-0.24
Winfield Erodes easily Frost action(freezing and thawing of soil moisture), slope 0.37 5 B 0.20-0.24
Hartville Erodes easily, percs slowly Percs slowly, frost action 0.28-0.43 4 C 0.1-0.24
Union Erodes easily, shallow root zone Percs slowly, slope 0.43-0.43 4 C 0.11-0.21
Goss Large stones, slope, droughty Deep to water 0.1-0.24 2 B 0.04-0.17
Peridge Erodes easily Deep to water 0.37-0.32 5 B 0.16-0.20
Ashton Erodes easily Deep to water 0.43-0.28 4 Ba NA
Cedargap Large stones Deep to water 0.1-.024 5 Bb 0.04-0.18
Nolin Erodes easily Deep to water 0.43-0.43 5 Bc 0.18-0.23
Hobson Erodes easily, droughty Percs slowly, slope 0.37-0.37 3 C 0.01-0.24
Clarksville Large stones, slope, droughty Deep to water 0.28-0.28 2 B 0.05-0.12
Gasconade Large stones, slope, droughty Deep to water 0.2-0.2 2 D 0.05-0.12
Lebanon Wetness, erodes easily Percs slowly, slope 0.32-0.43 4 C 0.02-0.22
Captina Erodes easily, shallow root zone Percs slowly, slope 0.43-0.32 3 C 0.14-0.16
Doniphan Droughty, slope Deep to water 0.28-0.28 4 B 0.08-0.10
Coulstone Droughty, slope Deep to water 0.24-0.24 3 B 0.06-0.09

1 A natural or constructed waterway, typically broad and shallow, seeded to grass as protection against erosion. Conducts surface water away from cropland.

2 Soil erodibility factor (K) reflects the susceptibility of a soil to erode under the action of raindrop impact and water flowing over the surface (sheet and rill erosion). (T) is rating from 1 (most erodible) -10 (least erodible) on erodibililty.

3 Refers to the soil behavior according to water infiltration, transmission, and runoff producing characteristics. The slope and the plant cover are not considered but are separate factors in predicting runoff. Group "A" has a high infiltration rate and low runoff potential. The other extreme is group "D" which has a low infiltration rate and a high runoff potential.

4 Presented is a range in inches from surface to bottom soil layer. The amount of water that would be maintained in soil after natural drainage in response to gravity alone. Varies with soil texture, structure, rock fragment content and other soil properties. The available water capacity in a 60-inch profile or to a limiting layer is: 0-6 inches: Very low, 3-6 inches: Low, 6-9 inches: Moderate , 9-12 inches: High

a JAN-APR

b NOV-MAY

c FEB-MAY

Key Messages: 

Conservation pays by enriching our economy and quality of life.

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