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I <br /> I <br /> I <br /> I <br /> I <br /> I <br /> I <br />I <br />I <br />I <br />I <br />I <br /> <br />IV. <br /> <br />A field survey of pond levels was also made to determine <br /> <br />high water elevations for proposed ponding areas. Outlet flows <br />from each subdistrict was based on draining the storage ponds in <br />the entire district within 10 days following a 100-year storm. <br />The following table shows the high water elevations, storage <br />required, the inlet flows and outlet flows for all subdistricts <br />except FT2 and FT3. <br /> <br />TABLE 1 <br /> <br /> PONDING INFORMATION <br />DISTRICT FORTY-THREE <br />(10g-Year, 24-Hour Storm) <br /> <br />Subdistrict <br /> <br />Total Inlet Outlet <br />Runoff Highwater Storage Flow Flow <br />(Ac-Ft) Elev. (Ac-Ft) (CFS) (CFS) <br /> <br />FT1 12.3 853.0 0.3 92.2 77.8 <br />FT4 (lower) 23.0 853.0 16.0 123.7 17.3 <br />FT4 (upper) 26.6 855.5 24.0 99.8 14.1 <br />FT5 127.4 857.0 127.4 461.7 12.8 <br />FT6 30 859.90 69 297.2 4.19 <br />FT7 43.9 --- 43.9 204.1 2.2 <br />FT8 8.2 --- 8.2 81.2 0.4 <br />FT9 44.8 --- 14.0 125.6 15.5 <br />FT10 48.0 855.0 48.0 --- 2.4 <br /> <br />PROPOSED IMPROVEMENTS <br /> <br />To alleviate the flooding in Flintwood Hills First Addition, it is <br />proposed to construct a 27-inch storm sewer to the ponding area <br />behind old city hall and a line 36 inches to 48 inches to the Rum <br />River as shown on Exhibit B. In addition, control structures <br />would be placed at the outlet of each pond and at the outlet of <br />the pond in Subdistrict FT-5. The proposed trunk lines shown on <br />Exhibit B follow the shortest route to the Rum River. To <br />accommodate future development, the route of these lines may be <br /> <br /> <br />