Located in the “Sherwood Forest” area of Charlotte, the Gaynor project encompasses an urban watershed of approximately 155 acres. The purpose of this project is to prevent structural flooding and alleviate street flooding during significant storm events.
For this project, Armstrong Glen, P.C. provided hydrologic and hydraulic analysis of the existing storm drain system along with the design of a new system to serve this area. As part of this project, over 14,000 linear feet of closed pipe and open channel were modeled. This project also included significant public involvement, due to the sensitivity of the planned improvements.
The proposed improvements include 200 linear feet of 66” reinforced concrete pipe, 1000 linear feet of 7’x 5’ reinforced concrete box culvert, 200 linear feet of 10’x5’ reinforced concrete box culvert, 60 linear feet of 14’x6’ reinforced concrete box culvert, 7300 linear feet of storm drain piping (total), and 4,000 linear feet of stream stabilization. The improvements were designed to provide 100-year protection from first floor structure flooding. Construction cost was $6,400,000.