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Claytor Lake Debris Study

Claytor Lake Debris Study. Hydro Environmental Services of Kleinschmidt Associates. Shoreline Management Plans (SMP) Aquatic & Terrestrial Habitat Studies Fish Populations & Migration Assessments Wildlife Studies Instream Flow Modeling Recreation Management Plans

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Claytor Lake Debris Study

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  1. Claytor Lake Debris Study

  2. Hydro Environmental Services of Kleinschmidt Associates • Shoreline Management Plans (SMP) • Aquatic & Terrestrial Habitat Studies • Fish Populations & Migration Assessments • Wildlife Studies • Instream Flow Modeling • Recreation Management Plans • Water Quality Monitoring & Modeling • Riparian, Wetland & Terrestrial Botanical Studies • River Channel & Habitat Restoration • Threatened & Endangered Species Consultation

  3. Kleinschmidt Experience Regarding Debris Issues • SCEG – Woody Debris & Stump Management Plan • Coosa/Warrior River dams – facilitated a stakeholder group to develop a woody debris policy • Grand River Dam Authority –Shoreline Management Plan

  4. Project Team • Project Manager – Dave Falcinelli • Technical Lead – Mike Hreben • Engineer – Jon Quebbeman • GIS Specialist – Jennifer Wardwell Staff engineers and scientists available to assist as needed.

  5. Understanding Debris Issues • There are a wide variety of debris types and characteristics (e.g., large wood, flotsam, jetsam, urban by-products, etc.) • Debris introduction mechanisms can vary (e.g., chronic and dispersed introduction from mountain and floodplain forests, and acute and concentrated loading from recreational areas) • Nature of debris dispersal within reservoirs can be very complex (eddy concentration/diffusion of buoyant debris, changes in buoyancy associated with residence time alters debris behavior, geographic features that concentrate or disperse debris) • Debris occurrence and associated problems can be very temporal in nature (natural seasonal interactions, recreation activities, seasonality of storms, etc). • Debris provides important habitat for fish and other aquatic species BUT can also be a detriment to aesthetics and recreational activities

  6. Debris Accumulation in Claytor Lake

  7. Debris Study Objectives: • Determine Amount & Type of Surface Debris • Characterize Debris Types • Evaluate where Debris entered the Lake • Determine the Relationship between Debris Accumulation Areas and Flow Events • Assess methods for reducing and removing debris • Define types of Woody Debris that is Beneficial Fish Habitat • Develop a Debris Management Plan Goal: an assessment of facility operations on debris accumulation.

  8. Amount & Type of Debris • Four Quarterly Field Surveys Over a One Year Period • Flyovers to identify areas of accumulation • Surveys after higher flow events to the extent possible • Representative photos of debris accumulations • Information on Debris types, locations, and quantities • Truck and Boat based surveys to ground-truth debris types and size of accumulations • Information from: FOCL, VDEQ, VDGIF, and other stakeholders • FOCL formed in 1993 due to debris issues

  9. Potential Debris Sources • Locations of debris accumulations documented by surveys and local entities will be assessed to determine likely sources. • Focus will be the New River and other sizeable tributaries • Shoreline activities will also be assessed as potential sources if applicable

  10. Flow/Debris Relationship • Historical Data • Available information on past debris removal efforts • Flow data • Information will be used to develop a qualitative relationship. • Current Information • Conduct field surveys after high flow events (as feasible) • Maintain contact with stakeholders concerned with debris issues

  11. Assessment of Debris Reduction/Removal Programs • Research what is being done at other projects • Literature review • Contact other licensees

  12. Define Types of Woody Debris That Are Beneficial Fish Habitat • Literature Review • Habitat requirements for primary fish species • Contact with VDGIF and VDEQ • Observations by staff scientists during quarterly surveys • Review of other study results (i.e. Aquatic Resource Assessment)

  13. Develop a Debris Management Plan • Review of current debris management on the lake • Research of existing debris management plans at other projects • Incorporate information learned through the other study tasks • Define those management practices that are most applicable to Claytor • Assemble the above information into a debris management plan

  14. Schedule • Begin to acquire existing data January 2007 • Begin quarterly field surveys in the winter or spring 2007 • Provide study updates in May and November 2007 • Final Study Report in May 2008

  15. Claytor Lake Debris Study Questions and Comments?

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