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Panoramic Hill Emergency Egress Route. Sara Gale, MPH Colleen Reid, MPH May 8, 2007 CP255: Urban Applications of Geographic Information Systems. Problem. Panoramic Hill has many hazards Hayward fault Wildfires Landslides Narrow roads with hairpin turns Steep terrain - PowerPoint PPT Presentation
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Panoramic Hill Emergency Egress Route
Sara Gale, MPHColleen Reid, MPHMay 8, 2007CP255: Urban Applications of Geographic Information Systems
Problem
Panoramic Hill has many hazards Hayward fault Wildfires Landslides Narrow roads with hairpin turns Steep terrain
Problems of Egress and Access
Data InputsData layer list: Source:
Digital orthographic photos Oakland 2002 Imagery Miers Project, USGS Seamless site 2004, City of Berkeley Planning Department 2004?
Berkeley roads AEGIS, UC Berkeley
Oakland roads Miers Project, 2002
Elevation points Hypso—USGS 1:24,000 orthoquads,C-spots 1995 Fire project by John Radke
Liquefaction hazard zones California Geologic Survey, Seismic Hazards Zone Report 080www.conservation.ca.gov/cgs
Landslide hazard zones California Geologic Survey, Seismic Hazards Zone Report 080www.conservation.ca.gov/cgs
Berkeley parcels 1999 AEGIS lab study
Oakland parcels Miers Project, 2002
Parcel ownership data Effie Yee, Old Republic Title Company via John and Judith Radcliff and Jerry Wachtel
EB Regional Parks boundary Meg PetersonEast Bay Regional Park DistrictPlanning, Stewardship and GIS Services
Streams Based on hypsography lines from USGS 1:24,000 orthoquads
Fault lines and other Earthquake data USGS
Map of Past Fires
Potential Landslide Zones
Slope
Landslides and Slope
Strategic Approach: Suitability Analysis
Weight each hazard (e.g. steep slope value) Overlay each layer and union all data into
one layer Sum the hazard weights to get a total hazard
score
Values for Suitability Analysis
Slope (degrees) 46-90 = 3 31-45 = 2 16-30 = 1 0-15 = 0
Fault Line (distance to fault)
<100 feet = 3 101-200 feet = 2 201-300 feet = 1 >300 feet = 0
Landslide In landslide zone = 2 Otherwise = 0
Stream Within 10 ft on either
side of stream = 1 Otherwise = 0
Fire Property Ownership
Suitability Map
Possible Walking Routes
Possible Road Routes
Conclusions
There should be many routes for egress on foot, which would save egress by car for those with mobility concerns
There are many proposed emergency access roads
Our final analysis will detail the pros and cons of each route
Special Thanks
Prof. John Radke Jerry Wachtel and Dick White