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Pawcatuck Soils

Soil Map Unit Description from the RI Soil Survey Report

Pw - Pawcatuck mucky peat (2010 Update for the RI Coastal Zone Soil Survey Phase I - please download the latest copy of the spatial data).

This nearly level, very poorly drained soil is in tidal marshes in coastal lagoons, bays and coves. It is subject to tidal inundation twice daily. Most areas are irregular in shape and range from 10 to 200 acres. Slopes are less than 1 percent.

Typically this soil has a surface layer of very dark grayish brown peat 11 inches thick. The subsurface layers are very dark grayish brown mucky peat to a depth of 51 inches, the substratum is black to gray sand derived from marine deposits. Thin layers of sand are common in some areas.

Included with this soil in mapping are small areas of very poorly drained Matunuck, Ipswich, and Sandyhook soils on similar landscape positions. Succotash soils and areas of beaches are on higher elevations. Included areas make up about 5 percent of this map unit.

The permeability of this soil is moderate through rapid. Available water capacity is high, and runoff is very slow. The soil is strongly acid through neutral.

Tidal inundation, a high water table at the surface and a high salt content make this soil unsuitable for most uses except as wetland wildlife habitat for saltwater- tolerant species. Capability subclass VIIIw; woodland group not assigned.

Pawcatuck soils are HYDRIC soils associated with wetlands which are protected from disturbance under state and Federal law. Any work done in or near this soil should be conducted following the proper permit procedures.

Link to Official Soil Series Description for Ipswich Soils

UPDATE: The Coastal Zone of Rhode Island is currently being updated and re-mapped, for more information on this update visit:

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