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Hab enhancementzonekolaks

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Indiana Reservoir Habitat Enhancement Plan

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Hab enhancementzonekolaks

  1. 1. Impoundments Aquatic Habitat Enhancement Plan Sandy Clark-Kolaks Indiana DNR November 2016
  2. 2. • About 90 impoundments > 15 acres – Five greater than >5000 acres with largest being 10,600 acres – Majority less than 100 acres • Mix of flood control, recreation, and water supply • Some with little water fluctuations, some with 15 foot rises and others with 20 winter drawdowns
  3. 3. Anglers want this
  4. 4. Develop a Habitat Enhancement Program • Structures – Mix of natural and artificial • Brush piles • Porcupine cribs and juniors • Georgia cubes • Rock piles • Bass nesting platforms • Shoreline stabilization – Tree plantings – Rip-rap • Dredging
  5. 5. Good Maps
  6. 6. BioBase • Easy uploading • Multiple users on one account • Merge multiple files • Quick processing • Manipulate data • Easy export • ArcGIS compatible • Great customer service
  7. 7. Sullivan Lake • County owned • Built in 1967 • 451 acres • Average depth 9.5 feet • Little to no vegetation • Multiple projects to stabilize shoreline and improve water quality • Strong partnerships
  8. 8. Habitat Enhancement Zone • Depths where adequate oxygen but does not create boating hazards • Calculate surface area • Target enhancing habitat by 5% to 20% in Habitat Enhancement Zone (HEZ)
  9. 9. Structure impact Type of structure Estimated habitat impact area (acreage) Rock piles (20/acre) 1.5 acres per complex Felled shoreline tree 0.05 acre per tree Brush pile 0.10 acre per pile PA Porcupine Crib (20/acre) 1.5 acres per complex PA Porcupine Crib Junior (20/acre) 1.5 acres per complex PA Post Cluster (25/acre) 1.5 acres per complex Georgia Cube (20/acre) 1.5 acres per complex PA Black Bass Nesting Box (10/acre) 1.5 acres per complex Houser, D.F. 2007. Fish habitat management for Pennsylvania impoundments. Pennsylvania Fish and Boat Commission.
  10. 10. • Sullivan Lake= 451 acres • HEZ = 69 acres • 45 Porcupine crib juniors • 30 Porcupine cribs • 30 Georgia cubes • 20 Black bass nesting structures • 5 felled trees • 1 hardwood brushpile • Proposed 9 acres of habitat enhancement or 13.5%
  11. 11. Volunteer Habitat Build Day April 2016
  12. 12. Habitat Pontoon
  13. 13. Habitat placement day June 2016
  14. 14. Summary • 46 Porcupine crib juniors • 39 Porcupine cribs • 30 Georgia cubes • 20 Black bass nesting structures • 5 felled trees • 1 hardwood brushpile • Target Habitat Enhancement = 9.35 acres or 13.5% of HEZ • Actual Habitat Enhancement = 10.0 acres or 14.4% or HEZ
  15. 15. Evaluation • Angler survey – Within 2 years prior to installation – Within 3 years following installation • Fish • Structures – Go Pro – Sonar
  16. 16. 2017/2018 • Raccoon Lake – 2,060 acres – 22 foot winter drawdowns • 448 acres HEZ – Enhance 29.2 acres or 6.5%
  17. 17. Questions? • Sandy Clark-Kolaks sclark-kolaks@dnr.in.gov

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