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Fresh Wet Meadow Type 2, PEMB. This community had a vegetative index of low and comprised 100 <br /> percent of the entire area. <br /> The highest rated community was the Shallow Marsh community rated at 0.1. Averaging all the communities <br /> together, the Vegetative Diversity and Integrity of this wetland is Low. A more accurate look uses a weighted <br /> average; using this method, this site shows a Low Vegetative Diversity and Integrity. <br /> The majority of vegetation at this site, such as it is, does not contribute to wetland function beyond water <br /> retention and flow resistance. However, because the weighted average can "hide" smaller communities, <br /> always check for even small patches of high-quality species. <br /> Functional Ratinas <br /> Function Rating Comment <br /> Vegetative Diversity Low If vegetation is present, the primary communities are compromised by <br /> extensive invasive and/or non-native species. Ongoing maintenance will <br /> be necessary to restore native ecologic communities, although the <br /> presence of invasives upstream will limit the success of restoration <br /> efforts. <br /> Additional stormwater Moderate Sediment removal would improve the ability of this site to maintain water <br /> treatment needs quality. <br /> Maintenance of Moderate There has been some degree of human alteration of the wetland <br /> Hydrologic Regime hydrology, either by outlet control or by altering immediate watershed <br /> conditions. However, the wetland retains some of the hydrologic regime <br /> similar to the original wetland type, either in part of the wetland or <br /> overall to some extent. Because of the interference (whether active or <br /> inadvertant), some characteristic vegetative communities have likely <br /> been affected, as also have the functions of flood attenuation, water <br /> quality and groundwater interaction. <br /> Flood/Stormwater/Att High The wetland provides ample flood storage and/or flood wave <br /> enuation attenuation. Outlet configuration is restricted (or unaltered) and <br /> undisturbed wetland soils, and dense emergent vegetation without <br /> channels allow the wetland to retard flood water. A high proportion of <br /> impervious surfaces in the subwatershed, large runoff volumes, clayey <br /> upland soils, and few wetlands present within the subwatershed may <br /> position any wetland to be a good attenuator of excess water. <br /> Downstream Water High This wetland has the ability and opportunity to protect valuable <br /> Quality downstream resources, including recreational waters. A wetland with <br /> significant emergent vegetation and overland flow characteristics <br /> removes sediment from stormwater. A high nutrient removal rating <br /> indicates dense vegetation (to maximize nutrient uptake) and sheet <br /> flow. The wetland may protect a valuable water resource within 0.5 <br /> miles downstream. More (and less-treated) runoff also increase a <br /> wetland's opportunity to rate high for this function. Maintaining wide, <br /> natural buffers and keeping out surges of untreated stormwater will help <br /> maintain this wetland's role as a protector of important resources lower <br /> in the watershed. <br /> Page 2 of 4 <br />