Island County
Coupeville, WA
Bluff Report
User Submitted Data
Bluff Overview
Bluff height: 50-60'
Bluff sediment type/geology:
- Mud
- Sand
Bluff vegetation:
- Shrubs
- Trees
Groundwater seeps?: Yes
Profile shape: Concave
Profile
Bluff undercut?: No
Bluff slide deposits?: Yes
Slide Deposits
Slide deposit height: 10-20'ft
Slide deposit width: 10-20'ft
Slide deposit depth: >10'ft
Slide deposit composition:
- Mud
Upper beach composition:
- Sand
- Gravels
- Cobbles
Is the slide wet or dry?: Wet
What is the slide wet from?: Groundwater Seep
Portion of bluff that slide deposit came from: Middle
Does the slide deposit material match material observed in the bluff above?: Yes
Where is the change obvious?: Material is being added to the top
Bluff and/or Deposit Change
Estimated distance from scarp edge to reference feature: 10-20'
Does the deposit size or scarp appear to be changing?: Yes
What sediment sizes are present at the beach?:
- Sand
- Gravels
- Cobbles
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Slide deposit is trees and tree root, slide looks like clay