Horizon Hill Park Stormwater Management

Purpose: This project funds the retrofit design and construction of three existing SWM dry ponds in Horizon Hill Park designed to work in series for this 185-acre drainage area. The extended detention ponds are intended to have forebays and micropools added and new concrete risers designed to provide full-channel protection storage and water quality storage. Wetland marsh fringes surround the micropools and the overbanks are planted with shrubs and trees to restore the stream buffer. This project is recommended in the Watts Branch Watershed Study. In addition, implementing this watershed improvement project supports Rockville's contribution to Maryland's voluntary C2K initiatives, as well as supports mandatory compliance with NPDES and TMDL requirements. Staff will work closely with the community in the concept-refinement phase to access project modifications that reduce the impact on the forest, and active and passive recreational areas. The focus will be to select a design and location that will provide sufficient stormwater control to arrest the active stream erosion, while minimizing the impact on the community's access to useable open space and minimizing tree loss.

First Appeared in Rockville's Capital Improvement Program: Fiscal Year 2002.

Staff Contact: Department of Public Works, Lise Soukup, Civil Engineer II, 240-314-8500.

Page updated: 5 February 2008