Sparrow Pond Restoration
301 S Harrison St - Glencarlyn Park, off of the W&OD trail. Upslope from the Glencarlyn dog park., Arlington, VA 22204 View Map
- Spring 2019 - Kickoff/30% Design
- Fall 2019 - 60% Design
- Winter 2021 - 90% Design
- 2021-2022 - 100% Design, Permitting and Procurement
- 2023-24 - Construction (6-9 months)
Fall 2022 Update: A Four Mile Run Trail detour will be in place Oct. 3-7 (weather-permitting) from near Glencarlyn Park playground to the W&OD Trail near South Woodstock Street to allow for project-related relining of a sanitary sewer line. Learn more including information for nearby residents and business.
Spring 2022 Update: Soil borings will be conducted the week of April 11 to check the soil layers and anticipate the earthwork and backfilling that will be required during the pond restoration. Equipment will be brought in on the morning of Monday, April 11 between 7-8am via the trail between S Park Dr and Sparrow Pond. The team will have spotters in the front and back of the truck to ensure the safety of cyclist and pedestrian trail users.
After 3-4 days, the team will wrap up the work and will bring the equipment back out from Sparrow Pond to the S Park Dr trail spur in the 3:30 - 4:30pm timeframe, following the same safety precautions. The S Park Dr trail entrance and W&OD trail sections will remain open through this time.
A project update was sent out in April 2022. The Sparrow Pond project engineering details have continued to be fine-tuned as we have been wrapping up the design work for the sediment collection areas, pools, outfall, and planting plan. In the coming months we will begin the permitting and procurement processes, the final stages for the pond design.
A plant rescue and seed collection will be planned for fall 2022. Stay tuned for more information.
September 2021 Update: As part of the Sparrow Pond design planning process, County contractors needed to investigate utility locations. The S. Park Drive entrance to the W&OD trail was closed for two days in the September 15-30 timeframe to conduct the work. We apologized for the inconvenience and encouraged trail users to take the 7th St S entrance to the W&OD trail for your recreational or bicycle commuting needs. Detour signage was posted.
Spring 2021 Update: Due to concerns about the raised water levels and the W&OD trail and embankment, a beaver baffle was installed in April 2021 to help keep water levels stable while allowing the beavers to continue in the pond area. Learn more about the beaver baffle.
Thanks to all who attended the virtual Sparrow Pond community meeting on Thursday, February 4, 2021. To view the presentation PDF and recording, please see below.
- See plans for the sediment forebay, pond footprint, construction access, and planting plan
- Learn more about the water quality benefit and habitat features
- Provide input on the draft design
For questions or more information, please contact Lily Whitesell at email@example.com or 703-228-3042.
About the Project
Sparrow Pond was originally constructed in 2001-02. Over time, the pond has filled in with sediment. The restoration was identified as part of the 2012-13 Watershed Retrofit Study, and funding was allocated for design through the Capital Improvement Program in 2018.
The project goal is to restore the pond to the original depth by removing sediment, add a sediment collection forebay to allow easier maintenance and sediment removal, maximize water quality benefits, and restore habitat.