#00-2550 1998 Wetland Delineation

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I I I I I I I I I I r 11.; I !I I I 11 Hydrology Wetland hydrology is present when an area is inundated or the soil is saturated within a major portion of the root zone which is usually within 12" of the surface. Areas saturated more than 12.5% of the growing season meet the hydrology criterion but areas saturated less than 5% of the growing season do not meet hydrology criteria. The accepted convention in Minnesota is to call areas saturated for greater than 5% of the growing season jurisdictional wetlands. The minimum required period of saturation is approximately 8 to 10 days in the Minneapolis-St. Paul area. Drained wetlands require a more thorough investigation of the hydrology. Furthermore, disturbances such as blocked culverts, beaver dams, and mining require an investigation of the site history to determine jurisdictional status. WETLAND DELINEATION We marked the highest extent of the wetland basin with 4-foot wooden laths and orange "wetland boundary" flagging tape. Svoboda Ecological Resources surveyed lath, property boundaries, and derived areas using a Global Positioning Systems unit. We established transects in a representative wetland-to-upland transition zones consisting of two sample points: one in upland, and one in the wetland. We also sampled numerous locations along the delineation line to verify our boundary, but we did not mark these locations. Field data sheets describe the soil characteristics, plant communities, and hydrology for each sample (see APPENDIX A). We marked sample points with a 4-foot lath and black and orange diagonally striped flagging tape. We classified wetlands using National Wetlands Inventory (Cowardin et al. 1979) and Circular 39 (Shaw and Fredine 1956) criterion. Svoboda Ecological Resources Project No.: 98-060-03 _J- . -.. ~ ··, .. Van Eeckhout Parcel Mr. Charles Van Eeckhout