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31

Oakdale Drainage Improvement Project: Overcoming Flood Mitigation Challenges in a Century Old Neighborhood

The Oakdale drainage area is located in the South Norfolk Historic District in the City of Chesapeake. This stormwater basin is primarily comprised of residential properties that were developed in the first half of the 20th century. In recent years, this area has begun to experience a higher frequency of flooding events, likely due to […]

32

Compound Urban Flooding: The Emerging Hazard for Large Metropolitan Areas Located Along Tidal Rivers

Compound floods from the co-occurrence of multiple flood drivers like riverine flow, storm surges, sea-level rise, and extreme rainfall have impacted several cities across the United States (US) in recent years. Metropolitan areas located in the coastal regions of the US have become increasingly vulnerable to such flooding conditions due to their exposure to multiple […]

33

Integrating Beaver Dam Analogues (BDAs) in Stream Restoration Projects

The science that supports constructed stream and floodplain environments to stimulate North American beaver colonization, and the effective implementation of that science, continues to evolve. KCI Technologies has been actively monitoring the scientific and engineering trends published by academic and public sector communities. This presentation will summarize KCI’s understanding of integrating beaver dam analogues (BDAs) […]

34

Master Planning for Flooding Improvement Opportunities

Identifying cost-effective opportunities to improve flooding conditions in urban settings is challenging.  One residential neighborhood located along Congers Creek within Rockingham County has struggled with frequent flooding events involving structural and roadway flooding.  Congers Creek is largely an open channel conveyance system with culvert crossings, but no FEMA floodplain has been mapped for the stream.  […]

35

Leigh Meadow/Towlston Basin Stream Restoration and BMP Retrofits: A Tale of Constraints, Creativity, and Collaboration

Under a Stream Stabilization/Restoration, Environmental, Permitting & Ancillary Services Basic Ordering Agreement, Stantec was awarded a Task Order by the Fairfax County Department of Public Works and Environmental Services (DPWES) to provide Stream Restoration and Stormwater Best Management Practice (BMP) Retrofit Design and Construction Administration services for the Leigh Meadow / Towlston Basin project in […]

36

Estuarine Water Quality Response Modeling for Tidal Flooding Susceptibility

This study investigates estuarine water quality response to coastal flooding in the Mason Creek in Norfolk, Virginia. The Mason Creek basin connects to Willoughby Bay which eventually reaches the Atlantic Ocean, serving as a primary drainage basin for both point and nonpoint source loadings from the Norfolk Naval Base and surrounding residential communities, and commercial […]

37

Using Geofluvial Principles to Inform Sewer Stream Crossing Identification

The Fairfax County Department of Public Works and Environmental Services (DPWES) provides wastewater collection and treatment services to over 250,000 county residents in the Northern Virginia area. DPWES owns and operates over 3,250 miles of sewer collection system, 63 pump stations, and the Noman M. Cole, Jr. Pollution Control Plant with an available treatment capacity […]

38

Assessing the Pre-Dam Removal Ecological Functions of Blackwater Creek, 90 Years after the Construction of College Lake Dam: A High Hazard Dam

Aging infrastructure and impacts from climate change have recently accelerated the need for maintenance and demolition of dams across the country. The College Lake Dam in the City of Lynchburg, Virginia is a local example of the threat that aging, outdated dams can pose to public safety and river health. In the last 50 years, […]

39

Chattahoochee River High Definition Stream Survey (HDSS): Delivering Powerful Data for Water Resource Management

The Chattahoochee River National Recreation Area (CRNRA) has challenges protecting the health of the river as a result of runoff from land development, wastewater overflow, and impacts from the regulated water discharges of Buford Dam. To help better manage the river, the National Park Service needed to continuously document the streambank and channel conditions on […]