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3) Method B -Stream Buffer Based on Slope and Groundcover <br />~~ <br />~~~ <br />i~ <br />i, <br />;; <br />i~ <br />r~ <br />~~ <br />~~ <br />~, <br />i~ <br />~~ <br />~; <br />~~ <br />~, <br />~~ <br />STREAM BUFFER WIDTH (IN FEET) <br />BASED ON SLOPE AND GROUNDCOVER 1 <br />Slope Value Type of Groundcover <br /> Grass Wood <br /> s <br />2 to 4.9 100 50 <br />5 to 9.9 150 100 <br />10 to 14.9 200 100 <br />15 or greater 250 150 <br />In addition to the buffer zone resulting from the calculations below, a stream buffer shall include any <br />portion of a floodplain as defined in the Orange County Flood Damage Prevention Ordinance, by special <br />survey by a registered engineer or surveyor, or by alluvial soils as designated in the Orange County Soils <br />Surve . <br />The required stream buffer zone shall not be limited to one calculation, but. shall be based on <br />calculations made at points where topographical and ground cover conditions change based on an <br />anal sis of the site. <br />e) Minimum Buffer Width Required <br />DISTRICT MINIMUM STREAM BUFFER WIDTH* <br />UNIV-CA The buffer width adjacent to streams shall be calculated for both Method A and <br /> Method B, and at any given point along the stream, the width of the buffer shall be <br /> the larger. of the two. <br /> The same method shall be used to calculate the buffer around the reservoir itself. <br /> New structures shall be located at least 1.50' from the reservoir or outside of the <br /> stream buffer, whichever is greater. <br />UNIV-PW The buffer width shall be calculated for both Method A and Method B, and at any <br /> given point along the stream, the width of the buffer shall be the larger of the two. <br />CANE-CA The buffer width adjacent to streams shall be the width calculated using Method A. <br />U-ENO-CA <br /> The same method shall be used to calculate the buffer around the reservoir itself. <br /> New structures shall be located at least 150' from the reservoir or outside of the <br /> stream buffer, whichever is greater. <br />U-ENO-PW The buffer width shall be as calculated using Method A, or 150', whichever is less, <br />L-ENO-PW except where density exceeds 1 du/ac and impervious surface exceeds 12%. <br />BACK-PW <br /> -Where density exceeds 1 du/ac and impervious surface exceeds 12%, the buffer <br /> width shall be calculated as above, but shall not be less than 100'. <br />CANE-PW The buffer width shall be the width calculated using Method A, or 150', whichever is <br />LITTLE-PW less. <br />HYCO-PW <br />FLAT-PW <br />HAW-PW <br />JORDAN-PW <br />M:\Erosion Control Div\Stream CaIIs~Zoning Text.012005 <br />