LOCATION FISHPOT MOEstablished Series
TAXONOMIC CLASS: Fine-loamy, mixed, superactive, nonacid, mesic Aquic Udorthents
TYPICAL PEDON: Fishpot silt loam - in a park under grass on a 2 percent slope; at an elevation of 435 feet. (Colors are for moist soils unless otherwise stated.)
A--0 to 1 inch; very dark grayish brown (10YR 3/2) silt loam, grayish brown (10YR 5/2) dry; many fine distinct brown (7.5YR 4/4) flecks; moderate fine granular structure; friable; many fine roots; medium acid; abrupt smooth boundary. (0 to 8 inches thick)
C1--1 to 8 inches; brown (7.5YR 4/4) silt loam; pale brown (10YR 6/3) dry; moderate fine and medium fragments; firm; common fine roots; few medium distinct pale brown (10YR 6/3) iron depletions; few glass fragments; neutral; abrupt wavy boundary.
C2--8 to 34 inches; very dark grayish brown (10YR 3/2) silt loam mixed with 10 percent, brown (10YR 4/3 and 7.5YR 4/4), and yellowish brown (10YR 5/4); common medium and large pockets and discontinuous bands of brown (7.5YR 4/4) silt loam; moderate medium and fine fragments; firm; common fine roots; 20 percent fine and medium fragments consisting of cinders, pebbles, china, brick, glass, concrete, and metal; neutral; abrupt irregular boundary.
C3--34 to 47 inches; brown (7.5YR 4/4) silt loam; weak medium fragments parting to weak medium subangular blocky structure; firm; few fine roots; common medium and coarse grayish brown (10YR 5/2) iron depletions; few fine prominent black iron and manganese concretions; neutral; abrupt wavy boundary. (Combined thickness of the C horizon is 30 to 80 inches thick.)
2Ab--47 to 54 inches; mottled grayish brown (10YR 5/2) and brown (10YR 5/3) silt loam; medium thin platy structure; firm; few fine roots; common fine prominent black (10YR 2/1) and reddish brown (5YR 4/3) iron and manganese concretions; common dark reddish brown (5YR 3/3) and reddish brown (5YR 4/3) stains; neutral; abrupt wavy boundary. (3 to 9 inches thick)
2Cb--54 to 60 inches; mottled grayish brown (10YR 5/2), brown (10YR 5/3), and dark yellowish brown (10YR 4/4) silt loam; massive; friable; few fine prominent black iron and manganese concretions; few common pale brown (10YR 6/3) and strong brown (7.5YR 5/6) stains; common thin silt lamella; neutral.
TYPE LOCATION: St. Louis County, Missouri; in the city of Maplewood; in a small park on the northwest corner of the junction of Laclede Station Road and Deer Creek. USGS Webster Groves quadrangle; UTM coordinates, zone 15, 4,276,055 meters N. and 732,290 meters E.
RANGE IN CHARACTERISTICS: Depth to bedrock is greater than 6 feet. Reaction is generally slightly acid or neutral, but individual layers may be medium acid.
The surface horizon has hue of 10YR or 7.5YR, value of 2 to 4, and chroma of 2 or 3. It is silt loam or silty clay loam.
The C horizon has hues of 7.5YR to 2.5Y; value of 2 to 5; and chroma of 2 to 4. It is silt loam, silty clay loam, or loam with clay content ranging between 18 and 35 percent. The C subhorizons are variable in thickness, textures are variable, and often the horizons are discontinuous. The blocky or platy fragments of the C subhorizons are not due to pedigenic factors but to the way the soil material was put into place by mechanical means. Nonsoil material such as (cinders, broken bricks, broken concrete, and scraps of wood) are mixed with the disturbed soil material in most places.
The buried soil is variable in color and typically is silt loam or silty clay loam.
COMPETING SERIES: There are no other series in this family. Similar series are the Dow, Harvester, Ida, and Kanima series. The Dow and Ida series are calcareous throughout. The Harvester series formed in disturbed fine-silty materials less than 40 inches thick. The Kanima series is loamy-skeletal and thermic and formed in dump remains from strip mining operations.
GEOGRAPHIC SETTING: Fishpot soils are disturbed materials in urban areas where silty and loamy soils and materials such as glass, bricks, and cinders have been placed over alluvial and terrace soils. These disturbed materials are 4 to 8 feet in thickness and have increased the elevation of the landscape above flood stage. Slope gradients range from 0 to 5 percent. Mean annual temperature ranges from 52 to 57 degrees F, and mean annual precipitation ranges from 35 to 42 inches
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Clarksville, Gasconade, Goss, Harvester, Menfro, and Winfield soils on higher uplands and Blake, Booker, and Nevin soils on lower flood plains. Blake soils are calcareous. Booker soils are in a very fine textural family. Clarksville and Goss soils have skeletal control sections. Gasconade soils are lithic. Menfro and Winfield soils lack disturbed horizons. Nevin soils have chroma of 2 or less throughout the control section.
DRAINAGE AND PERMEABILITY: Somewhat poorly drained. Runoff is moderate. Permeability is moderately slow.
USE AND VEGETATION: Fishpot soils are used for residential, commercial and industrial buildings, adjacent grounds, parks and playgrounds, roads and streets. Present vegetation is lawn grasses, ornamental shrubs, and shade trees. Native vegetation is mixed hardwoods.
DISTRIBUTION AND EXTENT: Urban areas in Missouri, and possibly other urban areas in adjacent states. The series is of small extent.
MLRA OFFICE RESPONSIBLE: Indianapolis, Indiana
SERIES ESTABLISHED: St. Louis County, Missouri, 1979.
REMARKS: These soils occupied both terrace and flood plain positions before urbanization. Usually, the land is altered by the processes associated with urbanization until the surface elevation of the reworked deposits is at a predetermined level that will reduce the risk of overflow over the entire area. The amount of filling, cutting, and alteration of existing soil is variable from place to place. The water table is assumed to be above 60 inches for more than one month each year; and the longer the material stays in place, the more the characteristics of wetness will show.