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11

Influence of Water-Quality and Habitat Gradients on Macroinvertebrate Community Composition in Salinized Mining-Influenced Headwaters

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Surface-coal mining in central Appalachia often results in salinization of headwater streams and alterations of habitat for aquatic biota. Responses in macroinvertebrate community composition across streams that vary in specific conductance (SC) and habitat have been documented. Headwater streams can also exhibit within-stream spatial variation in SC and habitat, frequently via dilution of mining-effluent, alterations […]

12

Revitalizing an EPA Brownfield, Part II: Habitat Rehabilitation and Stream Restoration

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More than 450,000 brownfields have been identified by the EPA in the U.S. for redevelopment and reuse, one of which is the South River within the City of Waynesboro. Previously owned by Dupont, the river and surrounding areas have been impacted by industrial practices and presence of hazardous substances, pollutants and contaminants. In conjunction with […]

13

Marsh Terrace Island Design and Permitting in Virginia Beach’s Back Bay

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Natural and nature-based features are a pillar of the City of Virginia Beach’s recently completed “Sea Level Wise” Adaptation Strategy which is now adopted into the City’s Comprehensive Plan. This project involves the design and permitting of a network of marsh terraces within Bonney Cove, located in Back Bay in southern Virginia Beach. This is […]

14

Stream Selection Automation through GIS

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The accessibility of authoritative and comprehensive geospatial data allows for tailored analyses over a wide range of subject areas and resolutions.  One such application of GIS is a regional study of streams (and other measured waterbodies) to identify sections that would most or least benefit from restoration efforts.  Criteria for the selection process can be […]

15

Rapid Data Collection for Accotink Stream Stability Assessment and Restoration Prioritization

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The headwaters of Accotink Creek originate within the City of Fairfax (City). Accotink Creek is located within the Potomac River watershed, and its combined major tributaries account for approximately ten miles of stream throughout the City. As the City approaches the 3rd Phase of the Chesapeake Bay TMDL, there is an increased need for project […]

16

As Time Goes By: Stormwater Facility Tracking and Management

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As we head into the second decade of meeting regulatory requirements related to the Chesapeake Bay TMDL, we have started to gain an understanding of the effects of time on our green infrastructure and stormwater management facilities.  We’ve learned lessons about the importance of detail in design, construction methods, and maintenance that impact the longevity […]

17

Living Shorelines and Fairfax County: Striving to Balance New Laws with Outdated Stabilization Practices

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In the past 10 years, the Virginia General Assembly has twice passed legislation incorporating “living shorelines” into the Code of Virginia as a method for stabilizing tidal shorelines in the Commonwealth. In 2020, Virginia Senate Bill 776 was passed by the General Assembly and signed by the Governor, which required the Virginia Marine Resources Commission […]

18

Ballston Pond Retrofit

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During the construction of I-66 through Arlington County in the early 1980’s, a detention pond was constructed to control runoff from I-66 for storms up to the 100-year storm. Over time, the pond became silted in and overgrown with invasive plant life.  Arlington County sought to restore the pond and bring it back to its […]

20

Integrating Beaver Dam Analogues (BDAs) in Stream Restoration Projects

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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) […]