Justin Anderson h ydrologist geomorphologist Siuslaw National Forest Annual Joint Stewardship Meeting January 18 th 2017 Yachats OR Design elements Design process Stream Simulation definition and rationale ID: 629472
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Slide1
Stream Simulation:
a design technique for achieving fish passage
Justin Anderson
h
ydrologist/ geomorphologist
Siuslaw National Forest
Annual Joint Stewardship Meeting
January 18
th
, 2017
Yachats, ORSlide2
Design elements
Design process
Stream Simulation definition and rationale
Resources
2016 Stewardship Project Proposals
11 culvert replacementsSlide3
Design elements
Design process
Stream Simulation definition and rationale
Stream simulation: what is it?
Design
Technique for
Fish
passage
Culvert replacement
Culvert removal
Other organisms too
Stream restoration
Resources
Simulate the natural characteristics of a stream (bed and banks)
Key concept
:
“geomorphic
continuity”Slide4
Design elements
Design process
Stream Simulation definition and rationale
Stream simulation: what is it?
Interdisciplinary design process
Engineer
Fisheries biologist
Hydrologist/ geomorphologist
Resources Slide5
Design elements
Design process
Stream Simulation definition and rationale
Stream simulation, why use it?
Effectiveness
Fish passage
Flood
resilience
Resources Slide6
Design elements
Design process
Stream Simulation definition and rationale
Stream simulation, why use it?
Policy
Design standards
ESA consultation
NOAA
NMFS
ARBO
Permitting
USACE
Resources Slide7
Phase 1
Initial Assessment
Phase 2
Site Assessment
Phase 3 Stream Simulation Design
Phase 4
Final Design & Contract Preparation
Phase 5
Construction
Phase 6
Maintenance & Monitoring
Stream simulation project phases Slide8
Design elements
Design process
Stream Simulation definition and rationale
Design process
(abbreviated):
Site assessment
(geomorphic)
Design reach
Reference reach
Long profile
Cross section
Widths
Pebble counts
Resources Slide9
Design elements
Design process
Stream Simulation definition and rationale
Design element:
Design reach
velocity
depth
drop
Longitudinal profile off-set, a recurring design challenge
Resources
Site assessmentSlide10
Design elements
Design process
Stream Simulation definition and rationale
Design element:
Longitudinal profile
Existing
Gradient?
Inlet
Transition
Structure
Outlet
Transition
sediment
pool
Design reach
Resources Slide11
Design elements
Design process
Stream Simulation definition and rationale
Design element:
Reference reach
Gradient is key determinant in selection
Reference Reach
Constructed Reach
“Geomorphic
continuity”
Resources
Informs:
Width
Depth
Bed-forms
Bed materialsSlide12
Design elements
Design process
Stream Simulation definition and rationale
Design element:
Longitudinal profile
(Design)
Bed-forms
Spacing
Resources
Informed by the reference reachSlide13
Design elements
Design process
Stream Simulation definition and rationale
Design element:
Cross section
Width!!!
Depth
Shape
Low flow
Resources
Informed by the reference reachSlide14
Design elements
Design process
Stream Simulation definition and rationale
Design element:
Stream bed materials
Gravels
Cobbles
Boulders
Fines!
Good match!
Resources
Informed by the reference reachSlide15
Design elements
Design process
Stream Simulation definition and rationale
Design element:
Examples
Stream bed materials
Gravels, cobbles
Boulders
Fines!
Too coarse!Slide16
Design elements
Design process
Stream Simulation definition and rationale
G
eotechnical
Depth to bedrock
Bedrock topography
Geology
Resources
Informs structure type
Design element:Slide17
Design elements
Design process
Stream Simulation definition and rationale
Sediment transport
Stability
Mobility
Scour
Resources
Photo: D. McKinley
Design element
Time to build something yet? ….Almost
Informs embedment depthSlide18
Design elements
Design process
Stream Simulation definition and rationale
Design element:
Crossing structure
c. Pipe Arch
d. Bottomless
Arch
e.
Round
b. Box
a. Bridge
Resources Slide19
Design elements
Design process
Stream Simulation definition and rationale
Design product:
Construction plans
Profile
Bed-forms
Spacing
Cross sections
Bed materials
Crossing structure
Resources Slide20
Design elements
Design process
Stream Simulation definition and rationale
Resources
Resources
www.
stream
.fs.fed.us/fishxing/aop_pdfs.html
Design manual
Available on-line
ComprehensiveSlide21
Design elements
Design process
Stream Simulation definition and rationale
Resources
Resources
Expertise
Engineers
Fisheries biologists
Hydrologists/
geomorphologists
US Forest
Service
Justin Anderson 541-750-7056
Project bios/
hydros
Tech review team
Stewardship board
Natural Resources Conservation Service (NRCS)
Engineering Firms
Other?
Gaps?
Timing
Design phase
Construction phaseSlide22
Conclusions
Stream simulation
Effective tool
Standard practice for USFS
Consultation demands it
Requires design expertise
Stewardship discussion
Lots of culverts
May need additional supportReview process can improve