Water quality and storm water project that consisted of preparing field surveys, hydrologic models and hydraulic models, design alternates, a planning report, cost estimates, construction drawings, and bid documents for a 0.38 square mile watershed.
The project involved the design of several best management practices to remove pollutants in runoff from parking lots and a city park. Public involvement was also required. The project eliminates roadway flooding at numerous road crossings and helps restore the quality of storm water runoff in nearby streams. Hydrologic and hydraulic models were created using the Corp of Engineers HEC-1 Flood Hydrograph Package, Corp of Engineers HEC-RAS hydraulic analysis program, and XP-SWMM.
Improvements include replacing six roadway culverts, up-sizing the existing pipe systems, channel widening, and channel stabilization. BMP measures include the installation of water quality ponds, vegetative buffers, porous pavers, and a Baysaver Separation Unit. Construction cost was $2,700,000. Project duration: May 1999 to August 2004.