Soil Map Unit Description from the RI Soil Survey Report
Mk - Matunuck mucky peat
Link to Official Soil Series Description for Matunuck Soils
This nearly level, very poorly drained soil is in tidal marshes and is subject to tidal inundation. Most areas are in salt marshes. Slopes are dominantly less than 1 percent.
Typically this soil has a surface layer of very dark gray mucky peat 12 inches thick. The underlying material is gray sand to a depth of 60 inches or more.
Included with this soil in mapping are areas of very poorly drained Sandyhook, Pawcatuck, and Ipswich soils on similar landforms. Succotash and areas of beaches are on higher elevation, some areas are covered with stones and boulders. Included areas make up about 5 percent of this map unit.
The permeability of this soil is rapid in the surface layer, rapid to very rapid between depths of about 12 and 18 inches, and very rapid at a depth of more than 18 inches. Available water capacity is low. Runoff is very slow, and water is ponded on some areas. The soil is strongly acid through neutral.
The daily tidal flooding and a high salt content make this soil unsuitable for most uses except as habitat for saltwater-tolerant wildlife. Capability subclass VIIIw; not assigned to a woodland group.
Matunuck 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.
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