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Table 1 <br />Zone <br />Zoning District Name <br />Runoff <br />Coefficient "C" <br />Maximum Inlet <br />Time in Minutes <br />R-1 <br />Low Density Residential <br />0.50 <br />15 <br />R-2 <br />Mid Density Residential <br />0.60 <br />15 <br />R-3 <br />High Density Residential <br />0.80 <br />10 <br />MH <br />Manufactured Housing District <br />0.55 <br />15 <br />NC <br />Neighborhood Commercial District <br />0.80 <br />10 <br />GC <br />General Commercial District <br />0.85 <br />10 <br />BI <br />Business Industrial Park District <br />0.85 <br />10 <br />LI <br />Light Industrial <br />0.85 <br />10 <br />HI <br />Heavy Industrial <br />0.85 <br />10 <br />PUD <br />Planned Unit Development District <br />variable <br />10 to 15 <br />Miscellaneous Land Uses <br />Land Use Runoff Coefficient "C" <br />Church 0.70 to 0.90 <br />School 0.50 to 0.90 <br />Park 0.30 to 0.70 <br />C. Datum <br />All drainage plans shall be prepared based on United States Geodetic Survey datum, 1978 <br />adjustment, consistent with National Flood Insurance Program, Flood Insurance Study for <br />the City of LaPorte. <br />5.5 REQUIRED DETENTION <br />Detention Basins — Unless otherwise provided for in this Section, Detention Basins will be <br />required for developments within the following watersheds. <br />Little Deer Creek — F212 <br />• Upstream of Main Street <br />Little Cedar Bayou — F216 <br />• Upstream of State Highway 146 <br />Big Island Slough — B 106 <br />• All segments <br />Spring Gully — B 109 <br />• All segments <br />Willow Spring Bayou — B 112 <br />• All segments <br />Taylor Bayou — A 104 <br />• All segments <br />The listed watersheds are shown on Figure 3. <br />Stormwater Criteria Page 4 of 10 <br />