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7, STORM P�ND INVENT�RY METHOD4LOGY <br />This section contains the Methodology utilized for Inventory of storm ponds in thc <br />Roseville Natural Resource Managernent. <br />EVALUATION OF STQi2VI POND S1TES <br />Preiiminary Assessment <br />Data from thc National Wetland Inventory (NWY) map was used for preliminary <br />determination of wetland site locations in the study area. Black and white aerial photos <br />were used to identify open water basins as potential storm ponds. <br />Field Assessment <br />Storm ponds were differentiated from wetIands primarily by the functionality of the <br />Uasin. For the purpose of this field assessment, storm ponds are considered to be <br />excavated areas either in uplands or historic wetlands that function to hold storm water <br />runoff form streets and parking lots. In the parks of Raseville these stonrn ponds typically <br />had steeply sloped sides with little to no emergent plant communities. <br />Sizes, tyges, and number of inlet and outlet structures where recorded %z each pond. <br />�bstzuctions, condition, and sedimentation where r�oted as well. Water quality, aesthetics <br />and wildlife habitat was based on the following observances: <br />Evidence of dumping <br />Hig�: No dumping evidence. <br />Mediu�rt: Decaying organic materials such as leaves and grass clipping that enter a <br />water body can contaminate an aquatic system. Excessive organic material <br />accumulating in a water body can cause increased phosphorus levels resultin� in al�al <br />blooms. <br />Low: Evidence of construction or hazardous wastcs such as paints and solvents are <br />obvious contamunants. <br />City of Rosevilde ��'- <br />Parks Nniaaral Resotrrce Manngement <br />