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<br />Table IV-4 (Continued)
<br />
<br />SWMM Channel Length Slope
<br />Number (n) (n/n) Channel Type' Comments
<br />147 1,550 ,038 N
<br />148 3,300 ,032 N
<br />149 1,825 ,026 N
<br />150 1,750 ,034 F
<br />151 400 ,025 N
<br />152 400 ,025 N 4
<br />153 200 ,025 N 4
<br />154 200 ,025 N 4
<br />155 200 ,025 N 4
<br />156 500 ,040 N 4
<br />157 700 ,107 N
<br />158 2,875 ,018 LSW
<br />159 2,300 ,030 F
<br />160 6,400 ,014 C
<br />161 5,400 ,024 C
<br />162 1,050 ,030 C
<br />163 1,160 ,048 C
<br />164 4,800 ,031 C
<br />165 1,920 ,015 C
<br />166 1,550 ,013 C
<br />167 1,000 ,090 C
<br />168 2,000 ,009 MCD
<br />169 3,700 ,025 F 3
<br />
<br />Table IV-4 (Continued)
<br />
<br />SwMM Channel Length Slope
<br />Number (n) (n/n) CJ.anllel Type' Conuneids
<br />170 2,500 ,040 N 4
<br />300 Series 1 ,020 DP 5
<br />
<br />See Table IV-3 for description of channel type abbreviation,
<br />
<br />2
<br />
<br />Channel elements lie east of Indiana Street
<br />
<br />3
<br />
<br />Channel element 169 is a composite of elements 144, 145, 146,202, 203, 204, and 205, Element 169
<br />is used for peak flow and total volume calculations. The other elements may be used to replace 169
<br />in the model for detailed analysis of the ponds,
<br />
<br />
<br />4
<br />
<br />Channel element 170 is a composite of elements 152, 153, 154, 155, 156, 207, 208, 209, and 210,
<br />Element 170 is used for peak flow and total runoff volume calculations, The other elements may
<br />be used to replace element 170 in the model for detailed analysis of the ponds,
<br />
<br />s
<br />
<br />Design points are "dummy elements" used to faciljtate output data management, They do not have
<br />any effect on flow routing, The design points, however, must have physical characteristics (shape
<br />and Manning's "n" value) associated with them to be used by the model. Because the length of the
<br />design point elements is so short compared to other elements, the shape and Manning's "n"
<br />characteristics do not affect the output of the model if they are within an order of magnitude of
<br />those used for the channel elements, The characteristics shown in Table IV-3 show values that are
<br />consistent with those used for the other types of channel configurations but are easily distinguishable
<br />when examining SWMM output.
<br />
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