Laserfiche WebLink
<br />points. These points have been located with assistance of the Town of <br />Yuma management and council to provide the most useful data for future <br />facilities design. Hydrographs at these design points are included in the <br />appendix. <br />The analysis demonstrates that Lake Yuma, Legion Pond, and the <br />Pheasant Ridge Pond will all be filled almost to the point of overflow <br />as a result of the 100 year storm. This assumes that these ponds are <br />empty prior to the storms. Even with this assumption, the residences <br />adjacent to these facilities will experience flooding unless corrective <br />measures are taken. <br />Based on future development conditions, the 100 year discharge <br />across Main Street toward Lake Yuma will be 400 cfs. The discharge north <br />of the railroad tracks at Main Street will be 170 cfs with 240 cfs across <br />Detroit Street. The discharge toward Detroit Street near the Eleventh <br />Street alignment will be 270 cfs and will produce minor ponding behind <br />the road embankment. These same flows coupled with flows from the basin <br />between Detroit Street and the runway will discharge across the north end <br />of the airport runway temporarily limiting its use. These urban flows <br />as described will not cause severe hazard to people, but are expected to <br />produce minor damages to residences along the streets with heavier flows. <br />Extensive damage is anticipated in the downtown area due to the lack of <br />drainage slope which will result in, shallow flooding of the businesses. <br /> <br />-15- <br />