Pictured Above: Angler Environmental and Prince William County staff celebrate the completion of Locust Shade Stream Restoration.
Location: Prince William County, VA
- • 12,375LF of Stream Restored to Date
• Only P3 of its kind in Virginia
• Design-Build by Angler Environmental
• Extensive Public Outreach
Nature of Work:
In 2007, Angler partnered with Prince William County Department of Parks and Recreation (PWC) to restore or preserve approximately 147,000 linear feet– well over 20 miles – of stream and riparian buffer on almost 2,000 acres of parklands. Angler established a public-private partnership (P3) with PWC to enable stream restoration across the County. The Prince William Environmental Bank (PWEB) is the only P3 agreement of its kind in the Virginia. All design, permitting, planning, and stream restoration construction are being implemented by Angler.
Initial Stream Condition Assessments and Design Feasibility Studies
Angler performed a comprehensive feasibility and needs assessment of the streams within 10 PWC parks. Opportunities were identified to address stream degradation and improve water quality through the implementation of various natural stream design (NSD) techniques and stormwater BMPs, including bio-retention basins, infiltration trenches, riparian buffers, invasive plant controls, bank stabilization with natural materials, bankfull bench creation, root wads, and in-stream structures, such as log/rock vanes and step pools. For each of the 10 PWC Parks which contain potential stream restoration sites, Angler performed the following:
- • WOUS Wetland Delineations and US Army Corps of Engineers (USACE) Confirmations
• Perennial Flow Determinations
• Geomorphic and Resource Protection Area (RPA) Assessments
• Threatened and Endangered (T&E) Species Surveys (where required)
Status of P3 Implementation
Angler has completed two of the identified projects and is currently developing a third project under this P3 agreement with PWC.
- • Locust Shade Park, Triangle, VA: Completed in May 2012. Restored 5,160LF of stream.
• James S. Long Park, Haymarket, VA: Completed in October 2013. Restored 7,215LF of stream.
• Andrew Leitch Park, Dale City, VA: Currently in design stage. This project will restore nearly 10,000LF of stream in one of PWC’s most urban parks.
James Long Park Stream Restoration
The most recent project completed under this program is a 7,215 stream restoration at James Long Park in Haymarket, VA. Angler provided all design, permitting, and construction for the project, which was completed in October 2013. Within the park, 14,850 LF of streams and 109 acres of riparian buffer were protected by conservation easements, while 7,215 LF of impaired streams were restored directly.
Prior to restoration, stream channels at James Long Park were heavily degraded due to increased residential/commercial development within the watershed. Based on channel evolution scenarios, streams within the park were either in Stage II (Disturbance) or Stage IV (Channel Widening) and were undergoing accelerated bank erosion and channel aggradation.
Stream restoration components included the installation of Offset Cross Vanes (55), Log Vanes (44), a Plunge Pool (1), Cross Vanes (10), Constructed Riffles (3), and several rootwads. Angler field ecology staff currently monitor James Long for compliance with success criteria required by state and Federal agencies.