Services provided for the Rutledge/Kingscross CIP included field surveying, hydrologic and hydraulic modeling, planning report preparation, public involvement, easement mapping, and final construction documents. The project is located in the Cotswold area of southeast Charlotte, and was driven by complaints of residential first floor flooding. The watershed covers an area of 250 acres (0.39 sq. mi.). Project improvements included over 7800 linear feet of storm drain pipe system, road culverts, residential foundation protection, and the restoration of over 300 linear feet of channel. Hydrologic and hydraulic models were created using the Corp of Engineers HEC-1 Flood Hydrograph Package, Corp of Engineers HEC-RAS hydraulic analysis program, XP-SWMM, and Hydraflow Storm Sewers.
Armstrong Glen analyzed the open channel in HEC-RAS and recommended a grading plan to eliminate erosion and lessen the flooding. Stream specialists designed a channel profile and cross-vane sequence to protect the channel banks from scour.
Project duration: October 2000 to December 2006. Construction cost was approximately $3,800,000.