Strawberry Run Stream Restoration
The Strawberry Run Stream Restoration project is part of the stormwater infrastructure system and involves approximately 900 linear feet section of stream located west of Fort Williams Parkway, east of Taft Avenue, and north of Duke Street. The project limits are approximately 500 feet north of Duke Street and continuing north (upstream) to the culvert under Fort Williams Parkway. Ongoing erosion along the stream banks is deteriorating water quality and threatening existing infrastructure. In keeping with its dedication to improve water quality in the Chesapeake Bay, the City is proposing to use environmentally conscious engineering practices that mimic nature to reconstruct stream banks, encourage native plant growth, and moderate the intense impact of streamflow during high-precipitation events. The project's main goals include protecting the stormwater pipe outfalls, stabilizing the stream banks, shielding the pedestrian bridge from continued erosion, and managing the hydraulic stream flow regime. Whenever possible, on-site materials will be used in the construction of the project. The project stakeholder team for the City’s stream restoration projects include Transportation and Environmental Services (T&ES), Department of Project Implementation (DPI), Recreation, Parks, and Cultural Activities (RPCA) Natural Resources, the consulting team, and the community. A series of community collaboration meetings took place in Fall 2022/Spring 2023, you can review information from experts about the Strawberry Run stream restoration design process.
The Virginia Department of Environmental Quality (VDEQ) awarded the City a competitive $800,000 Stormwater Local Assistance Fund (SLAF) grant for partial funding of this project. Currently, the total estimated project cost is $1.6 million. The SLAF grant program was initiated by the Commonwealth of Virginia to provide financial support to municipalities implementing projects to reduce stormwater pollution as the new Chesapeake Bay TMDL requirements were being passed down through the MS4 permits.
Impact on Trees
During initial design, in 2020 a total 353 trees were surveyed around the project site and, of those, 36 of them are considered to be 'notable' trees, as defined by Recreation, Parks & Cultural Activities (RPCA), Natural Resources. The project designers worked with RPCA and adjusted the stream alignment to reduce the total amount of trees removed from the original plan of 206 down to 89. This adjustment also lead to a decrease in removal of 'notable' trees with 13 slated for removal, down from 34. Of note, these 13 'notable' trees to be removed are impacted by stream erosion and are currently at risk for negative health impacts. The NCD plan currently consists of replanting 1,030 native tree species (3-gallon container). The planting mix also includes 350 shrubs (1-gallon container) including American Elderberry, Buttonbush, and Spicebush; 5,100 "live stakes" (3-4 foot) of Silky Dogwood, Smooth Alder, and Black Willow; and 548 2-inch plugs of rushes and sedges.
Community Collaboration Series on Stream Health Improvements
The City of Alexandria has partnered with the Institute for Engagement & Negotiation (IEN) at the University of Virginia for community engagement pertaining to stream health improvements in Taylor Run and Strawberry Run. Via interviews and small group conversations, IEN has been learning from community members and City staff about their views on possible improvements in these areas. This information will inform a consensus building process spanning August to December, during which time a consensus-built path forward for the two streams will be developed by a stakeholder group and submitted for consideration to City Council. Members of the public, not included in the Consensus Building Group, will have an opportunity to provide input during the process. Please join to engage with experts and learn more about stream restoration. Final stakeholder recommendations will be captured in a report by IEN.
2021 Draft Natural Channel Design Engineering Plans
The draft NCD engineering plans are provided in response to community feedback received. These plans are not for construction purposes and should be considered as a "draft". The plan set is included as five (5) separate documents due to file size limitations but in total represent the complete set.
- (1) Cover Sheet; (2) General Notes; (3) Existing Conditions & Demolition Plan; (4) Tree Identification Table; (5) Tree Location Map; (6) Overall Site Plan
- (7 & 8) Strawberry Run Plan and Profile; (9) Tributary Plan and Profile; (10) Storm Sewer Outfalls Plan & Profile; (11) Cross Section Plan; (12 - 14) Cross Sections
- (15) Riparian Planting Plans; (16) Riparian Planting Details; (17) Tree Preservation Notes; (18) Tree Preservation Details; (19) Design Narrative; (20) Water Quality; (21) Water Quality Impact Assessment
- (22) Typical Sections; (23) Erosion and Sediment Control Notes and Details; (24) Erosion and Sediment Control Plan; (25) Storm Sewer Notes and Details; (26) Strawberry Run Geometry Plan; (27) Tributary Geometry Plan; (28) Soils Map
- (29) Cascade with Boulder Steps and Logs Detail; (30) Constructed Riffle Detail; (31) Rock Cross Vane with Step Detail; (32) Rock Vane Details; (33) Log Vane Details; (34) Rock Revetment Details; (35) Toe Wood Details; (36) Plunge Pool Details; (37) Step Pool Details; (38) Storm Sewer Outfall Details; (39) Wetland Delineation Map