Dam Removal Visualization

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Detailed presentation of dam removal and river restoration visualization project which helped in the decommissioning of two power dams in California.

Technology News & Politics

Visualizing Dam Removal and River
Restoration in the Pacific Northwest

ASPRS/CaGIS Specialty Conference
November 16, 2010

Lex Ivey

Agenda

1. Background
2. Approach
3. Results
4. Outcomes

Background
• 250-mile river system
• Once 3rd largest salmon run on
west coast
• Pacific Corp Klamath Hydro
Power Project began in 1918
• Relicensing process in 2001
• American Rivers involved in
2001
• Hired TerraCognito to create
3D visualizations

Overall Approach
1. Model existing conditions
a) Terrain
b) Features
c) Textures
2. Model future conditions
a) Terrain
b) Features
c) Textures

Challenges
Large Area
Complex terrain
Forested
Data quality/availability
• Ortho imagery
• Lake/river bed textures
Limited budget

Existing Conditions

• Terrain
• Reservoir surface
• Vegetation
• Structures
– Dams
– Buildings

nested, seamless TINs TERRAIN CREATION

regional context: USGS DEM

nested, seamless TINs TERRAIN CREATION

areas of interest

LandSat imagery TEXTURE CREATION

color, but low resolution

DOQQ imagery TEXTURE CREATION

high resolution, but no color

Solution TEXTURE CREATION

merged using Photoshop

Existing trees FEATURE CREATION

USFS tree stand data

Existing trees FEATURE CREATION

Tree images

Existing trees FEATURE CREATION

Tree “fences”

Structures FEATURE CREATION

Dam and powerhouse

Existing conditions RESULTS

Dam and powerhouse

Future Conditions

• Reservoir bottom
• River bed
• Re-vegetation
• River surface

nested, seamless TINs TERRAIN CREATION

Existing conditions

nested, seamless TINs TERRAIN CREATION

Reservoirs clipped out

nested, seamless TINs TERRAIN CREATION

Reservoir bottom

TEXTURE CREATION

Historic map

Digitized river course

hillshade raster TEXTURE CREATION

random color ramp
on elevation raster

photo-real
sediment texture

Future conditions TEXTURE CREATION

Reservoir draw-down

hillshade
TEXTURE CREATION
elevation

slope

aspect

photo-real
restoration texture

Future conditions TEXTURE CREATION

Re-vegetation/river restoration

Results
1. Interactive fly-through
2. Animation videos
3. Still shots (before and after)

future conditions RESULTS

Restored river valley

future conditions RESULTS

Reservoir drawdown

Outcomes
The visualizations were used “The visualizations
extensively by American Rivers allayed many fears,
throughout the settlement filled in gaps and also served to
negotiation process inspire many people about how
and in meetings with legislators, and soon a free-flowing Klamath
“inspiring” to River could become a functional,
potential funders who may be aesthetic resource that
called upon to help could benefit the environment
with the costs of restoration. and community.”
—Steve Rothert,
American Rivers California
Field Office Director

Outcomes
November 2008
• PacifiCorp, the federal
government, and the
states of California and
Oregon signed an
Agreement in Principle
stating the preliminary
view that “…..the benefits
of dam removal
outweigh the potential
costs and impacts.”

MORE INFO
CommunityViz
http://www.communityviz.com

American Rivers
http://www.americanrivers.org
Klamath information
http://www.americanrivers.org/our-work/restoringrivers/dams/projects/restoring-
klamath-river.html

Klamath visualizations
http://www.americanrivers.org/our-work/restoringrivers/dams/projects/
envisioning-a-restored-klamath.html
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Dam Removal Visualization

1. Visualizing Dam Removal and River Restoration in the Pacific Northwest ASPRS/CaGIS Specialty Conference November 16, 2010 Lex Ivey

2. Agenda 1. Background 2. Approach 3. Results 4. Outcomes

3. Background • 250-mile river system • Once 3rd largest salmon run on west coast • Pacific Corp Klamath Hydro Power Project began in 1918 • Relicensing process in 2001 • American Rivers involved in 2001 • Hired TerraCognito to create 3D visualizations

4. Overall Approach 1. Model existing conditions a) Terrain b) Features c) Textures 2. Model future conditions a) Terrain b) Features c) Textures

5. Challenges Large Area Complex terrain Forested Data quality/availability • Ortho imagery • Lake/river bed textures Limited budget

6. Existing Conditions • Terrain • Reservoir surface • Vegetation • Structures – Dams – Buildings

7. nested, seamless TINs TERRAIN CREATION regional context: USGS DEM

8. nested, seamless TINs TERRAIN CREATION regional context: USGS DEM

9. nested, seamless TINs TERRAIN CREATION areas of interest

10. LandSat imagery TEXTURE CREATION color, but low resolution

11. DOQQ imagery TEXTURE CREATION high resolution, but no color

12. Solution TEXTURE CREATION merged using Photoshop

13. Existing trees FEATURE CREATION USFS tree stand data

14. Existing trees FEATURE CREATION Tree images

15. Existing trees FEATURE CREATION Tree “fences”

16. Existing trees FEATURE CREATION Tree “fences”

17. Structures FEATURE CREATION Dam and powerhouse

18. Existing conditions RESULTS Dam and powerhouse

19. Existing conditions RESULTS Dam and powerhouse

20. Future Conditions • Reservoir bottom • River bed • Re-vegetation • River surface

21. nested, seamless TINs TERRAIN CREATION Existing conditions

22. nested, seamless TINs TERRAIN CREATION Reservoirs clipped out

23. nested, seamless TINs TERRAIN CREATION Reservoir bottom

24. TEXTURE CREATION Historic map Digitized river course

25. hillshade raster TEXTURE CREATION random color ramp on elevation raster photo-real sediment texture

26. Future conditions TEXTURE CREATION Reservoir draw-down

27. hillshade TEXTURE CREATION elevation slope aspect photo-real restoration texture

28. Future conditions TEXTURE CREATION Reservoir draw-down

29. Future conditions TEXTURE CREATION Re-vegetation/river restoration

30. Results 1. Interactive fly-through 2. Animation videos 3. Still shots (before and after)

31. existing conditions RESULTS Dam and powerhouse

32. future conditions RESULTS Restored river valley

33. existing conditions RESULTS Dam and powerhouse

34. future conditions RESULTS Reservoir drawdown

35. future conditions RESULTS Restored river valley

36. Outcomes The visualizations were used “The visualizations extensively by American Rivers allayed many fears, throughout the settlement filled in gaps and also served to negotiation process inspire many people about how and in meetings with legislators, and soon a free-flowing Klamath “inspiring” to River could become a functional, potential funders who may be aesthetic resource that called upon to help could benefit the environment with the costs of restoration. and community.” —Steve Rothert, American Rivers California Field Office Director

37. Outcomes November 2008 • PacifiCorp, the federal government, and the states of California and Oregon signed an Agreement in Principle stating the preliminary view that “…..the benefits of dam removal outweigh the potential costs and impacts.”

38. MORE INFO CommunityViz http://www.communityviz.com American Rivers http://www.americanrivers.org Klamath information http://www.americanrivers.org/our-work/restoringrivers/dams/projects/restoring- klamath-river.html Klamath visualizations http://www.americanrivers.org/our-work/restoringrivers/dams/projects/ envisioning-a-restored-klamath.html TerraCognito GIS Services, Inc: http://www.terracog.com

39. Visualizing Dam Removal and River Restoration in the Pacific Northwest ASPRS/CaGIS Specialty Conference November 16, 2010 Lex Ivey

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