Natural Resources Studies and Reports Archive

• • Colony Creek Final Report Text
  • Colony Creek Final Report General Diagrams
  • Colony Creek Final Report Alternative 2
  • Colony Creek Final Report Alternative 3
  • Colony Creek Final Report Alternative 4
  • Colony Creek Final Report Alternative 5 and 6
  • Colony Creek Final Report Tables
  • Colony Creek Final Report Photos

Phase 1: The Bayview Ridge Urban Growth Area

Phase 1 Plan Document

Figures:

• • Fig 2-1 Vicinity Map
  • Fig 2-2 Drainage Districts
  • Fig 2-3 Dike Districts
  • Fig 2-4 Draft Proposed Subarea Plan
  • Fig 3-1 Aerial Orthophoto
  • Fig 3-2 Existing Development
  • Fig 3-3 Land Use Designations
  • Fig 3-4 Wetlands
  • Fig 3-5 Priority Habitats and Species
  • Fig 5-1_Study Area
  • Fig 5-2_No Name Basin
  • Fig 5-3_Joe Leary Basin
  • Fig 5-4_Little Indian Basin
  • Fig 5-5_Big Indian Basin

Phase 2: Development and Drainage issues outside the UGA
(The following files sizes may reach 18MB)

• • Phase 2 Plan Document
  • Appendix A
  • Figures
    • 2-1
    • 2-2
    • 2-3
    • 2-4
    • 2-5
    • 2-6
    • 5-1
    • 5-2
    • 5-3

The Cockreham Island Flood Hazard Reduction Buy-Out Study: Cockreham Island is located between the Towns of Lyman and Hamilton, in Skagit County, Washington, and is adjacent to the Skagit River. With its significant history of flooding and flood-related damages, a group of landowners, who collectively own a large portion of Cockreham Island, requested that Skagit County inquire about the possibility of a buy-out of island properties.
This study has been presented by GeoEngineers, Inc.

Final Report

List of Figures

• • Figure 1. Vicinity Map
  • Figure 2. Site Map
  • Figure 3. Properties
  • Figure 4. Smaller Creeks and Levee
  • Figure 5. Geology
  • Figure 6. Valley Slope
  • Figure 7. Channel Character
  • Figure 8. Complimentary Bends
  • Figure 9. Old and Potential Paths
  • Figure 10. Recommended Meander
  • Figure 11. Buyout Priorities

Appendices:

Appendix A - Hydrology and Hydraulics

• • Figure A-1 Cross Sections and Contours
  • Figure A-2 Digital Terrain Model
  • Figure A-3 1-year Flow Inundation Map
  • Figure A-4 2-year Flow Inundation Map
  • Figure A-5 5-year Flow Inundation Map
  • Figure A-6 10-year Flow Inundation Map
  • Figure A-7 25-year Flow Inundation Map
  • Figure A-8 50-year Flow Inundation Map
  • Figure A-9 100-year Flow Inundation Map

Appendix B - Benefit Cost Analysis

• • Figure B-1 Structures
  • Figure B-2 Cost Effective Parcels at 3% Discount Rate
  • Figure B-3 Cost Effective Parcels at 7% Discount Rate
  • Figure B-4 Total Existing Ecosystem
  • Figure B-5 Total Proposed Ecosystem
  • Figure B-6 Cost Effective Parcels at 3% Discount Rate
  • Figure B-7 Cost Effective Parcels at 7% Discount Rate
  • Figure B-8 Cost Effective Parcels at 3% Discount Rate
  • Figure B-9 Cost Effective Parcels at 7% Discount Rate

Appendix C - Land Management Suitability

• • Figure C-1 Habitat Restoration
  • Figure C-2 Agricultural Observation
  • Figure C-3 Public Access and Recreation
  • Figure C-4 Combined Management Plan

Appendix D - Funding Source Evaluation

Big Lake Drainage Management Plan 11.09.2007

Figures:

Fig1-1

Fig 1-2

Fig 3-1

Fig 3-2a

Fig 3-2b

Fig 3-3

Fig 3-4

Fig 3-5a

Fig 3-5b

Fig 3-6

Fig 3-7

Fig 4-1

Fig 4-2

Fig 5-1

Fig 5-2

Fig 5-3

Fig 5-4

Fig A-1

Fig A-2

Fig A-3

Fig A-4

Fig A-5

Fig A-6

Fig A-7

Fig A-8

Fig A-9

Fig A-10

Fig A-11

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Fig A-20

Fig 8-1

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Fig 8-9

Appendices:

Appendix B - Big Lake Inventory

Appendix C - Big Lake HSPF 20.06.2006

Appendix D - Table D1

Appendix D - Table D2

Appendix E - Table E1

Appendix E2 - Pipe Hydraulics

Big Lake Improvements Cost Estimate 05.04.2006