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Fig. 7.3 Initial evaluation of potential restoration sites based on GIS data layers
for field verification. Sites were selected based on their proximity to existing stream
corridors, the presence of hydric soils, land use/land cover type and proximity to
currently established conservation areas. The forty sites were also distributed
more or less evenly over the entire study area. After examining ten sites that were
scattered throughout the study area, field personnel were able to verify that the GIS
data that had been plotted for land use/land cover type, stream locations, riparian
buffer condition and the approximate location of floodplain boundaries were
accurate. Based on these results, it was determined that no further field verification
would be necessary at this time and efforts could be refocused on field verifying the
preliminary outcome of the GIS-based predictive model.
7.3.3 Development of the GIS Predictive Model
The data gathered to date was reviewed leading to the development of weighting
schemes for the GIS-based predictive model. The intent of the model was to
identify sites for the restoration and enhancement of habitat in the following areas:
• In the stream channel;
• Along stream corridors, between 500 and 1000 ft away from the top of bank of
the existing stream, channel (a.k.a., isolated wetlands); and
• Along stream corridors, between 0 and 500 ft from the top of bank of the stream
(non-isolated wetlands and adjacent stream channels).
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