tacoma silt loam, drained

Soils in the land application area are Tacoma Silt Loam (drained) on the crop ground.
Characteristics of Tacoma Silt Loam include very deep, very poorly drained soils on flood plains. Drainage has been altered by use of tile and open ditches. They formed in materials recently deposited by rivers with a mixture of volcanic ash and thin layers of organic matter. Typically, the surface layer is silt loam about 9 inches thick. The underlying material is silt and silt loam to a depth of 60 inches. This layer contains a layer of very acidic decomposed plant material to a depth of 60 inches. Available water capacity is high. Water movement through these soils is moderately slow. A seasonal high water table is at a depth of 1 to 3 feet from November to April. Most areas of these soils are protected from flooding by dikes. Unprotected areas are subject to frequent, long periods of flooding. nrcs