Laserfiche WebLink
indicates dense vegetation and sheet flow to maximize nutrient uptake and residence time within the �• <br /> wetland. The opportunity for a wetland to protect a valuable water resource diminishes with distance <br /> from the wetland so wetlands with valuable waters within 0.5 miles downstream have the greatest <br /> opportunity to provide protection. <br /> . Maximum Score: 1.375 � <br /> 4.2.1.5 Maintenance of Wetland Water Quality <br /> The sustainability of a wetland is partially driven by the quality and quantity of stormwater runoff <br /> entering the wetland. The ability of the wetland to sustain its characteristics is evaluated based on <br /> characteristics of the contributing subwatershed and indicators within the wetland. Subwatershed � <br /> conditions which affect the wetland's sustainability in relation to water qua.lity impacts include: <br /> upland land use; sediment delivery characteristics to the wetland; stormwater runoff volumes and <br /> rates; and the extent, condition,and width of upland buffer. Indicators of nutrient loading to the <br /> wetland indicate that a diverse wetland may not be sustainable. Indicators that a wetland has been <br /> affected by nutrient loading include the presence of monotypic vegetation and/or algal blooms. <br /> Maximum Score: 1.17 <br /> 4.2.1.6 Shoreline Protection <br /> Shoreline protection is evaluated only for those wetlands adjacent to lakes, streams, or deepwater <br /> habitats. The function is rated based on the wetlands opportunity to protect the shoreline; i.e. <br /> wetlands located in areas frequently experiencing large waves and high currents have the best <br /> . opportunity to protect the shore. In addition, shore areas composed of sands and loams with little <br /> vegetation or shallow-rooted vegetation will benefit the most from shoreline wetlands. The wetland <br /> width, vegetative cover, and resistance of the vegetation to erosive forces determine the wetland's <br /> ability to protect the shoreline. <br /> Maximun: Score: 1 <br /> 4.2.1.7 Ground Water Interaction <br /> The ground water interaction function is the most difficult to assess. Here the most likely type of <br /> ground water interaction is determined, i.e.recharge or discharge, or a combination. In many cases, a <br /> wetland will exhibit both recharge and discharge characteristics, however one is usually more <br /> \\fred\wp�23�27�D06\Repons�Final Report\Wetland_mgmt_ptan dit011503.doc 4-14 <br />