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I I I I I I I I I I I I I I I I I I I Development is possible if adequate precautions are taken into consideration. For example, vegetation should be retained in order to decrease erosion. The Nymore soil series is a well drained loamy coarse sand found on uplands. The suitability of this soil is also moderate for trail development. However, if the slope is less than 25%, Nymore soils are better suited for trail development than the Hubbard soil because the loamy texture is less erodible. The Zimmerman-Isanti-Lino is the other major soil association found in the Trott Brook corridor. This association comprises approximately 50% of Anoka County. The Lino solI series does not constitute a significant portion of the Trott Brook corridor. The Zimmerman-Isanti association is found in the mid section of the corridor. The soils are typically sand and fine sand. Approximately 252.5 acres of the Trott Brook corridor consist of Zimmerman and Isanti soils. The Zimmerman soil series, located on slight uplands, is a well drained sand or fine sand with moderate suitability for trail development. The suitability of the soil is limited by its sandy texture because it is highly erodible and susceptible to dry conditions. Wetness is not a concern because the water table is well below the surface. The Isanti soil series, located in depressional areas along the Brook, is a poorly drained sandy soil. The Isanti soil is not suitable for trails because of a high water table. The Rifle soil series also makes up a sizable portion of the soils in the Trott Brook corridor. The Rifle soil series is an organic soil found immediately adjacent to the brook. This soil is wet and not suitable for trail development. Approximately 666.5 acres of the corridor are designated as Rifle muck. Other soils in the corridor are present to a lesser extent. Among these inclusions are alluvial land, Anoka, Braham, Dalbo, Dickman, Markey muck, and Seeleyville muck. Various suitabilities have been assigned to these soils in the Anoka County Soil Survey. Map 2 shows the soils present in the Trott Brook Corridor. Map 3 shows the suitability of these soils for development. A synopsis of soil descriptions including the major and minor soil series can be found in Appendix II. 7