FLOOD01853 - Laserfiche WebLink

Home Browse Search

the Wild Horse Creek levee, riprap was placed on the curve of the levee where it changes alignment to parallel Wild Horse Creek. The other section of riprap was placed along the Arkansas River levee to protect against damaging flows from Two Buttes Creek as it joins the Arkansas River. This protection begins about 800 feet west of the State Highway 89 crossing of the levee and extends upstream (west) for about 2000 feet. Riprap for bank protection was placed at the abutments of each bridge over Wild Horse Creek and the Arkansas River, and for 50 feet on each side of the U.S. Highway 50 and AT&SF Railroad stop log structures. Concrete stop log abutments were placed in the levee west of the Town where U.S. Highway 50 and the AT&SF Railroad crosses the levee. There are two closures for the railroad, one for the main line and one for a siding. Galvanized steel stop logs are to be placed between the abutments for protection when flows exceed the 25-year flood (17,200 c.f.s. in Wild Horse Creek, 40,000 c.f.s. in the Arkansas River). Stop logs for all three closures are stored in a small building approximately 100 yards south of the U.S. Highway 50 stop log structure and 200 yards north of the AT &SF Railroad structures. Two interior ponding areas were formed as a result of levee borrow. These areas are shown as borrow areas I, III, and IlIA on the General Plan map, Figure I. The smaller of the areas (borrow area I) is approximately I mile north of Town on the landside of the levee. The larger of the ponding areas (borrow areas III and IlIA) is approximately 1/2 mile south of Town on the landside of the levee. Both interior ponding areas are utilized to pond interior drainage runoff until the Wild Horse Creek and Arkansas River flooding recedes. The ponding areas are drained through the levee with 30-inch gravity outlet structures with flap gates to keep floodwaters from flowing to the landside of the drain. Both areas have relatively low valued agricultural use so damages are low and limited ma.inly to temporary inconvenience and nuisance. The remaining areas on the landside of the levee drain toward the east to the Arbmsas River. Ooeration and Maintenance Resoonsibility After construction was completed on the Project, operation and maintenance responsibilities were turned over to the Holly Flood Control, Drainage and Sanitation District to insure serviceability of the project. The O&M Manual prepared by the Corps for District use outlines these responsibilities. The District is also responsible for annual opera.tion and maintenance costs. Mr. W.O. Randle, Secretary of the District, stated that the Holly local fire and ambulance volunteers do the operation and mainknance work. The O&M Manual for the Project states that stop log closure shall begin when flooding in Wild Horse Creek and the Arkansas River rises to elevation 3398.0, which is 2 feet below the top of the AT&SF Railroad rail and 4.2 feet below the U.S. Highway 50 roadway. The O&M Manual stated that a flood early warning system was being designed and would be installed by the U.S. Weather Service in the near future. According to Mr. W.O. Randle, Secretary of the District, the flood early warning system was designed and installed with sensors on Two ButtedCreek south of the Town and on Wild Horse Creek north of the Town. Mr. Randle indicated that the system was not satisfactory because the sensing device was set so high that no flows have 6