Three-Dimensional Seepage Model Study, Oakley Dam, Sangamon River, Illinois,
Abstract
Seepage model studies were conducted for the proposed Oakley damsite using a three-dimensional electrical analogy seepage model. Test results indicated that uplift pressures beneath the spillway will vary from 59 percent of the net head at the upstream edge of the structure to 49 percent at the downstream edge. Test results also indicated that piezometric heads at the downstream toe of the dam even with a 1000-ft upstream impervious blanket will be higher than can be safely tolerated. Computed total seepage with the reservoir at flood control pool varied from 2780 gpm (6.2 cfs) to 3290 gpm (7.3 cfs). It is recommended that other seepage control measures such as relief wells and a positive cutoff be investigated.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1972
- Accession Number
- ADA033148
Entities
People
- C. C. Trahan
- C. L. Mcanear