The Watershed Protection Department completed the preliminary engineering report on flooding in the area around U.S. Highway 183 and Jollyville Road. The report evaluated possible ways to reduce the risk of flooding in three problem areas.
The type of flooding occurring in this area is known as local flooding. It generally occurs away from creeks in areas where heavy rainfall overwhelms the manmade drainage system of pipes and ditches.
Preliminary Engineering Report
A consultant hired by the Watershed Protection Department studied the entire area that drains to the culverts under U.S. Highway 183 near Duval Road. Within this area, the consultant evaluated three problem areas:
Oak Knoll Drive
For each of the areas, the report identified three potential alternatives to reduce the risk of flooding. In the Oak Knoll Drive area, the report recommends an alternative that would use the existing storm drain system as well as install approximately 2,900 linear feet of additional storm drains, associated inlets, and a detention pond. See map below:
In the Bell Avenue area, the report recommends an alternative that would install approximately 2,400 linear feet of additional storm drains, associated inlets and curb and gutter along Bell Ave and part of Secrest Dr. In the Arabian Trail area, the study was unable to confirm flooding and did not recommend a project in this area at this time.
While the report evaluated the flooding and potential solutions for each of the identified areas, we plan to move forward with a design and construction project in the Oak Knoll Drive area because the area is at a higher risk of flooding.
The current design of the proposed storm drain system improvements is included in Appendix G of the Preliminary Engineering Report. As the project progresses, the final storm system design may change slightly from the results published in the Preliminary Engineering Report.