National Dam Safety Program. A. C. Schneider Lake Dam (MO 31563), Missouri - Kansas City River Basin, Gasconade County, Missouri. Phase 1 inspection Report
PRC CONSOER TOWNSEND INC ST LOUIS MO
Pagination or Media Count:
This dam appears to be in satisfactory condition. However, the dam does not have adequate spillway capacity. Considering the number of inhabited dwellings, a state highway and an oil depot being located downstream of the dam, the PMF is considered the appropriate spillway design flow for A. C. Schneider Lake Dam. The inspection and evaluation indicates that the reservoirspillway system can accommodate approximately 5 percent of the Probable Maximum Flood without overtopping the dam. It also indicates that the reservoirspillway system can not accommodate the one-percent chance flood without overtopping, however, the reservoirspillway system of A. C. Schneider Lake Dam can accommodate the ten-percent chance flood without overtopping. Other deficiencies noted by the inspection team were the erosion gully along the downstream left abutmentembankment contact, the trees on the downstream and upstream slope of the dam, wave erosion on the upstream slope, the unsupported length of the principal spillway pipe at the outlet, the eroded gulley in the emergency spillway channel, some vegetative growth around the principal spillway inlet, a need for periodic inspection by a qualified engineer and a lack of maintenance schedule. The lack of seepage and stability analyses on record is also a deficiency that should be corrected.
- Hydrology, Limnology and Potamology
- Civil Engineering