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Article 6: Development StandInas <br /> Section 6.13: Stream Buffers <br /> .2 Applicability <br /> Th- earn buffer regulations and standards contained herein shall be applica• - o all streams <br /> and wate :.tures, as follows: <br /> (A) Streams ide • .ed by any of the following means: <br /> (1) Shown as so is - e lines or as broke, . ue lines on the USGS Quadrangle <br /> maps, <br /> (2) Shown as water featu - • the • :••e County Soil Survey, or <br /> (3) A water feat - dentified by a field deter • - ion of County staff trained in <br /> surfac- -.ter identification through the North Ca • *•a Division of Water Quality <br /> owQ). <br /> (B) . -am buffers shall extend around the perimeter of all water features if an :• ion of the <br /> stream buffer of a stream touches the water feature. Disputes pertaining to wate :.ture <br /> decisions by County staff shall be filed directly to the NCDWQ. <br /> 6.13.3 Calculating Width of Stream Buffer <br /> (A) Special Flood Hazard Areas = - e - - _ _ _ _ _ <br /> (1) Those streams identified by FEMA as having floodplains shall have stream <br /> buffers calculated from the outside edges of the 100-year floodplain. <br /> B) Calculating Slope Value <br /> Draw 250' length perpendicular lines, at 200-foot horizontal interv. . . ong the <br /> -ntire length of the outside edges of the stream, or the outer -.•e of the FEMA <br /> floo•: .in, whichever is greater. <br /> (2) Determine th- : -vation at either the stream •- or the outer edge of the FEMA <br /> floodplain, whicheve •- highest (Eleva 1), and at the point 250' from the <br /> stream or FEMA floodplain, is -ler is applicable, along the perpendicular line <br /> (Elevation 2). <br /> (3) Subtract Elevatio rom Elevation 2 for t - •.fference. <br /> (4) Divide th- % erence by 250 for the Mean. <br /> (5) ' . iply the Mean by 100 to determine the "Slope Value". <br /> Perform this calculation for both sides of the stream or floodplain. <br /> Orange County, North Carolina-Unified Development Ordinance Page 6-96 <br />