The Fishtrap series consists of deep, very poorly drained soils formed herbaceous and woody organic deposits overlying glaciofluvial deposits. Fishtrap soils are in depressional areas on outwash terraces. Slopes are 0 to 2 percent. Fishtrap muck - on a 1 percent south facing slope in pasture at 75 feet elevation. These soils are usually saturated with water unless drained.
Reaction is moderately acid to very strongly acid throughout.
The organic material is 16 to 51 inches thick. Fibers are mostly from grasses and sedges, but pedons contain up to 15 percent wood fragments. Fiber content ranges from 10 to 50 percent unrubbed and 2 to 15 percent rubbed. It is loamy sand, sand, or gravelly sand. This is the Adrian series.