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Table III. Evaluation of Program Effects on the Piping Plover <br />18 <br />Potential Sources of Current and <br />Possible Analysis <br />Future Data <br />Methods' <br />Time Frame <br />A. Program Effects on Piping Plover Habitat <br />1) Program effects on quantity, quality, and spacial <br />distribution of piping plover riverine nesting habitat <br />.. <br />a) Wide active channels <br />Data Needs: <br />Aerial/satellite photographs <br />0 Trend analyses <br />At 3 -year intervals <br />Open, active channel width <br />Videography <br />0 Quantitative before /after <br />Wetted width <br />GIS database <br />comparisons by bridge <br />• Permanent transects2 <br />segment <br />b) Suitable sandbars for nesting <br />Data Needs: <br />Aerial/satellite photographs <br />Trend analyses <br />Videography, at least <br />Amount of unobstructed bare sand <br />Videography <br />0 Quantification by bridge <br />3x annually; 10 years <br />substrate at various discharges <br />Permanent transects <br />segment <br />Permanent transects, <br />(especially at nest initiation) <br />USGS gaging stations <br />0 Sediment/vegetation model <br />annually, 10 -13 yrs <br />c) Optimal forage habitat <br />Data Needs: <br />Quantity of moist/wet substrate <br />Annually, during <br />summer, 10 years <br />2) Program effects on the sustainability of riverine <br />nesting habitat <br />a) Channel morphology/ sediment availability <br />Data Needs <br />WC roost transects <br />a Sediment/vegetation model <br />• 4 -5 annually, for 8 <br />Water Depth <br />USGS/USBR sediment transects <br />0 Trend analyses <br />years (transects); <br />Active channel width <br />Permanent transects <br />0 incidentally, pre - <br />Wetted width <br />0 Aerial/satellite photographs <br />and post -flood <br />Extent of bare substrate <br />Videography <br />measurements <br />Data Needs sediment attributes: <br />0 USGSBOR sediment transects <br />0 Trend analyses <br />0 6 times /year, for 5 -6 <br />Sediment load <br />0 Permanent transects <br />GIS database queries <br />years <br />Sediment concentration <br />0 Upstream and downstream of major <br />Sediment/vegetation model <br />Grain size <br />inflows and diversions <br />18 <br />