City of Duncan , OK Clear Creek Lake Dam Spillway

Duncan, OK

This $9 million project involves the following scope of work:

1. Demolition of the existing concrete spillway structure and staircase access on both sides of spillway.
2. Installation of a water bypass cofferdam system for completion of the Work in the dry.
3. Replacement of the existing spillway with the addition of passive rock anchors, underdrain system and riprap channel.
4. Installation of an impervious clay core backfill at the crest section. 5. Backfill and grading of earthen embankment to tie into existing grades with excavated material.

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