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Site Information <br />Ecological Land Classification: <br />Province: Eastern Broadleaf Forest <br />Section: Minnesota and Northeast Iowa Morainal <br />I <br />Subsection: St. Paul Baldwin Plains and Moraines <br />Soil: (158C) Zimmerman fine sand <br />• sandy glaciofluvial deposits, somewhat excessively <br />drained ye <br />• 93.3% sand, 4.3% silt, 2.3% clay , <br />(from the USDA's Web Soil Survey) <br />d <br />Hydrology ) <br />The water input in this area is primarily rain runoff from the <br />surrounding slopes, particularly on the southern edge where <br />water from Jerrold Ave/Prior Ave runs into the park. Heavy . 9116 t--- <br />_ - _ _ _ <br />rainfalls result in erosion on that southern edge. There is also <br />erosion along the eastern edge. <br />There is no surface water outflow, only groundwater outflow. The low-lying area typically floods for a few weeks each <br />spring, creating a vernal pond. <br />Ecological Categories <br />• Sandy Upland <br />• Moist Sandy & Loamy Lowland <br />Ecosystem Baseline Inventory <br />• <br />Elm (Ulmus spp.) <br />60% of the canopy <br />• <br />Cottonwood (Populus deltoides) <br />40% of the canopy <br />• <br />Boxelder (Acer negundo) <br />55% of the understory <br />• <br />Green ash (Fraxinus pennsylvanica) <br />35% of the understory <br />• <br />Sugar Maple (Acer saccharum) <br />5% of the understory <br />• <br />Basswood (Tilia americana) <br />5% of the understory <br />• <br />Virginia Creeper (Parthenocissus quinquefolia) <br />• <br />Riverbank Grape (Vitis riparia) <br />• <br />Sallow Sedge (Carex lurida), growing in the middle of the vernal <br />pond (photo at right, taken 6-18-22) <br />61 <br />