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Narragansett Soils

Soil Map Unit Description from the RI Soil Survey Report

NaA - Narragansett silt loam, 0 to 3 percent slopes.

Link to Official Soil Series Description for Narragansett Soils

This nearly level, well drained soil is on the crests of glacial till upland hills and till plains. Areas are irregular in shape and mostly range from 2 to 50 acres.

Typically the surface layer is dark brown silt loam about 7 inches thick. The subsoil is yellowish brown and light olive brown silt loam 26 inches thick. The substratum is yellowish brown gravelly loamy sand to a depth of 60 inches or more.

Included with this soil in mapping are small areas of well drained Canton, Charlton and Bridgehampton soils and moderately well drained Wapping and Woodbridge soils. Also included are small areas of soils with slopes of more than 3 percent. Included areas make up about 10 percent of this map unit.

The permeability of this soil is moderate in the surface layer and subsoil and moderately rapid or rapid in the substratum. Available water capacity is moderate, and runoff is slow. This soil is very strongly acid through medium acid.

This soil is suitable for community development. Roads and streets need careful design to prevent frost heaving. The use of temporary diversions and siltation basins and quickly establishing plant cover help to control erosion during construction.

This soil is suited to cultivated crops, and most areas are used for farming. The hazard of erosion is moderate. The use of cover crops and the return of crop residue to the soil help to control erosion and maintain tilth and organic matter content.

This soil is suitable for woodland wildlife habitat and openland wildlife habitat. It is too dry to provide wetland wildlife habitat. Capability class I; woodland group 4o.
 

Soil Map Unit Description from the RI Soil Survey Report

NaB - Narragansett slit loam, 3 to 8 percent slopes.

Link to Official Soil Series Description for Narragansett Soils

This gently sloping, well drained soil is on the crests and side slopes of glacial till uplands and till plains. Areas are irregular in shape and mostly range from 2 to 50 acres.

Typically the surface layer is dark brown silt loam about 7 inches thick. The subsoil is yellowish brown and light olive brown silt loam 26 inches thick. The substratum is yellowish brown gravelly loamy sand to a depth of 60 inches or more.

Included with this soil in mapping are small areas of well drained Canton, Charlton, and Bridgehampton soils and moderately well drained Wapping and Woodbridge soils. Also included are small areas of soils that have slopes of more than 8 percent. Included areas make up about 10 percent of this map unit.

The permeability of this soil is moderate in the surface layer and subsoil and moderately rapid or rapid in the substratum. Available water capacity is moderate, and runoff is medium. The soil is very strongly acid through medium acid.

This soil is suitable for community development. The use of straw bale sediment barriers and siltation basins and quickly establishing plant cover help to control erosion during construction.

This soil is suited to cultivated crops, and many areas are used for farming. The hazard of erosion is moderate. Stripcropping, the use of diversions and cover crops, and the return of crop residue to the soil help to control erosion and maintain tilth and organic matter content.

This soil is suited to trees, woodland wildlife habitat, and openland wildlife habitat. It is too dry to provide wetland wildlife habitat. Capability subclass IIe; woodland group 4o.
 

Soil Map Unit Description from the Soil Survey of Rhode Island

NbB - Narragansett very stony slit loam, 0 to 8 percent slopes.

Link to Official Soil Series Description for Narragansett Soils

This nearly level to gently sloping, well drained soil is on crests and side slopes of glacial till uplands. Areas are irregular in shape and mostly range from 5 to 200 acres. Stones and boulders cover 2 to 10 percent of the surface of the soil.

Typically the surface layer is dark brown silt loam about 7 inches thick. The subsoil is yellowish brown and light olive brown silt loam 26 inches thick. The substratum is yellowish brown gravelly loamy sand to a depth of 60 inches or more.

Included with this soil in mapping are small areas of well drained Canton, Charlton and Bridgehampton soils and moderately well drained Wapping, Scio, and Wood- bridge soils. Also included are small areas of soils that have slopes of more than 8 percent and small areas of soils that do not have stones or boulders on the surface. Included areas make up about 10 percent of this map unit.

The permeability of this soil is moderate in the surface layer and subsoil and moderately rapid or rapid in the substratum. Available water capacity is moderate, and runoff is slow to medium. This soil is strongly acid through medium acid.

This soil is suitable for community development. Roads and streets need careful design to prevent frost heaving. The use of straw bale sediment barriers and quickly establishing plant cover help to control erosion during construction.

The stones and boulders on the surface make this soil unsuitable for cultivated crops and severely hinder the use of farming equipment, but some areas are used for pasture. The hazard of erosion is slight to moderate.

This soil is suited to trees and woodland wildlife habitat. It is poorly suited to openland wildlife habitat and is too dry to provide wetland wildlife habitat. Capability sub class VIs; woodland group 4o.

Soil Map Unit Description from the Soil Survey of Rhode Island

NbC - Narragansett very stony silt loam, 8 to 15 percent slopes.

Link to Official Soil Series Description for Narragansett Soils

This sloping, well drained soil is on side slopes of glacial till uplands. Areas are irregular in shape and mostly range from 5 to 100 acres. Stones and boulders cover 2 to 15 percent of the surface.

Typically the surface layer is dark brown silt loam about 7 inches thick. The subsoil is yellowish brown and light olive brown silt loam 26 inches thick. The substratum is yellowish brown gravelly loamy sand to a depth of 60 inches or more.

Included with this soil in mapping are small areas of well drained Canton, Charlton and Bridgehampton soils and moderately well drained Wapping, Scio, and Wood- bridge soils. Also included are small areas of soils that have slopes of more than 15 percent and small areas of soils that do not have stones or boulders on the surface. Included areas make up about 10 percent of this map unit.

The permeability of this soil is moderate in the surface layer and subsoil and moderately rapid or rapid in the substratum. Available water capacity is moderate, and runoff is rapid. The soil is strongly acid through medium acid.

This soil is suitable for community development. The main limitation is slope. Roads and streets need careful design to prevent frost heaving. The use of straw bale sediment barriers and temporary diversions and quickly establishing plant cover help to control erosion during construction.

The stones and boulders on the surface make this soil unsuitable for cultivated crops and hinder the use of farming equipment, but some areas are used for pasture. The hazard of erosion is severe.

This soil is suited to trees and woodland wildlife habitat. It is poorly suited to openland wildlife habitat and is too dry to provide wetland wildlife habitat. Capability sub class VIs; woodland group 4r.

Soil Map Unit Description from the Soil Survey of Rhode Island

NcC - Narragansett extremely stony silt loam, 3 to 15 percent slopes.

Link to Official Soil Series Description for Narragansett Soils

This gently sloping to sloping, well drained soil is on the side slopes of glacial till upland hills. Areas are long and narrow and mostly range from 2 to 200 acres. Stones and boulders cover 10 to 35 per cent of the surface (fig. 4).

Typically the surface layer is dark brown silt loam about 4 inches thick. The subsoil is yellowish brown and light olive brown silt loam 29 inches thick. The substratum is yellowish brown gravelly loamy sand to a depth of 60 inches or more.

Included with this soil in mapping are small areas of well drained Canton, Charlton, and Bridgehampton soils and moderately well drained Wapping and Woodbridge soils. Also included are small areas where less than 10 percent of the surface is covered by stones and boulders. Included areas make up about 10 percent of this map unit.

The permeability of this soil is moderate in the surface layer and subsoil and moderately rapid or rapid in the substratum. Available water capacity is moderate, and runoff is medium to rapid. The soil is strongly acid through medium acid.

This soil is suitable for community development. Stone removal is needed for site preparation and landscaping. Roads and streets need careful design to prevent frost heaving. The use of straw bale sediment barriers and temporary diversions and quickly establishing plant cover help to control erosion during construction.

This soil is suited to trees, and most areas are wooded. Stones and boulders hinder the use of planting and harvesting equipment.

The stones and boulders on the surface make the soil unsuitable for cultivated crops and severely hinder the use of farming equipment. The erosion hazard is moderate to severe.

This soil is suited to woodland wildlife habitat. It is poorly suited to openland wildlife habitat and is too dry to provide wetland wildlife habitat. Capability subclass VIIs; woodland group 4x.
 

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