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PAMAP Program LiDAR. LiDAR Workshop - April 21, 2008. What is PAMAP and PAMAP LiDAR?. PAMAP is the digital base map of the Commonwealth of Pennsylvania. PAMAP is being created as a seamless, consistent, high-resolution set of digital, geospatial data products and associated services.
PAMAP Program LiDARLiDAR Workshop - April 21, 2008What is PAMAP and PAMAP LiDAR?
  • PAMAP is the digital base map of the Commonwealth of Pennsylvania.
  • PAMAP is being created as a seamless, consistent, high-resolution set of digital, geospatial data products and associated services.
  • The map is being compiled from new high-resolution aerial photography and elevation data, and from existing digital map resources developed by state and federal agencies, counties, regional agencies, and municipalities.
  • Envisioned in 2001, with operations starting in 2002
  • What is PAMAP?
  • Digital orthoimagery
  • LiDAR point clouds
  • LiDAR-derived products – DEM, contours, and breaklines
  • Land Use/Cover
  • Building/Structure data where not provided by partners
  • PennPilot historical aerial photographs
  • Collaboration
  • PAMAP is part of the USGS National Map
  • PAMAP Cooperative Agreement established with 55 of the 67 counties
  • PAMAP is funded primarily by the PA Department of Conservation and Natural Resources (DCNR), with contributions from other state agencies, and USGS and FEMA
  • The PAMAP Program is managed by agreement between DCNR and Penn State University
  • How Did LiDAR Come About?
  • The topographic mission of the Bureau of Topographic and Geologic Survey
  • Desire for very accurate terrain statewide
  • Recognition of the importance of LiDAR data for many mapping, planning, management, and monitoring efforts
  • How Did LiDAR Come About?
  • Estimated costs falling
  • Proposal to combine orthoimagery and LiDAR efforts
  • Study of synergies among imagery and LiDAR efforts
  • Independent review of proposals and synergies
  • DCNR providing funding
  • 45,000 sq. mi., approx. 15,000 sq. mi. per yearPAMAP LiDAR Approach
  • PAMAP elevation data is framework data
  • LiDAR is the basis for elevation framework data
  • Flooding is Pennsylvania’s No. 1 hazard
  • Need to address flooding data needs
  • Follow FEMA’s specifications for LiDAR data, but not all MapMod requirements
  • Manage Expectations
  • PAMAP LiDAR ProgramWhat is LiDAR?PAMAP LiDAR ProgramPAMAP LiDAR CharacteristicsLiDAR Specifications
  • Post spacing – 1.4 meters
  • Vertical Accuracy
  • 18.5 cm open areas – 0.61 foot
  • 37 cm forested/vegetated – 1.2 foot
  • Classification
  • LiDAR data in LAS format
  • Bare Earth (2) and Model Key (8)
  • Model key for derived products
  • Above Ground (1) and (12)
  • Other classifications also used for smaller numbers of points
  • LiDAR Products
  • Raw data retained
  • LAS data with classifications
  • Organized by PAMAP tile structure
  • Derived products by PAMAP tile structure
  • DEM – 3.2 foot (1 m) pixel
  • Breaklines – from PAMAP orthoimagery
  • 3D shapefile
  • Contours – 2-foot C.I.
  • 3D shapefile
  • LiDAR PointsLiDAR Points – Bare EarthLiDAR Points – Above GroundLiDAR Points – Bare EarthLiDAR Points – Above GroundLiDAR PointsLoyalhanna Gorge Ground PointsLoyalhanna Gorge Above-Ground PointsResidential Area Ground PointsResidential Area Above-Ground PointsDEM - Digital Elevation ModelBreaklinesBreaklinesContoursContoursMetadataQuality Assurance
  • Quantitative and qualitative review of LiDAR
  • Quantitative review of imagery
  • Independent vendor team
  • GeoCue/URS DPMS used for multi-participant tracking all data/tiles
  • Quality Assurance
  • Imagery and LiDAR have passed quantitative checks
  • Qualitative review of 2006 LiDAR underway
  • How Will Users Get The Data?
  • All PAMAP data distributed in the public domain
  • Widespread distribution of final data
  • Federal – USGS and FEMA distribution
  • State
  • Counties
  • State Data Center
  • Distribution State/County
  • A geospatial enterprise server architecture is established for state agencies
  • All levels of government able to use database and services
  • State agencies acquire copies of the data
  • All Cooperative Agreement counties receive a portable hard drive with data
  • Distribution PASDA
  • PA Spatial Data Access clearinghouse
  • PAMAP data available without cost or use restriction
  • Imagery
  • DEM
  • Contours
  • FTP and web services available to anyone
  • Distribution of LiDAR Point Clouds (LAS Data)
  • Available from PA State Data Center
  • Offline request only
  • Requested data on portable hard drive or DVD
  • Contact Data Center
  • Email:
  • Voice: (717) 948-6336
  • FAX: (717) 948-6754
  • Website:
  • Land developmentWind farm sitingFloodplain mappingLandslide reviewFlood controlMiningEducationGeologic mappingRescueForest classificationOrienteeringConservationHighway designProperty managementResource explorationHydrologyWhat Are Users Doing With The Data?Landslide Review and Modeling
  • PennDOT use of LiDAR for evaluation of landslides
  • Jay, Thanks, the LiDAR information was exceptionally useful. It was much more detailed than we imagined which was great! We actually are using it on 2 emergency slide projects, one on SR 130 in Penn Hills where we have a road closed due to a slide about 200 feet wide by 800 feet long, the other is being used for rockfall remediation/removal on SR 28 in the Harmarville area where we have problems and recently had a fall where motorists were involved. The information is extremely useful especially when we don't have the luxury of getting survey as quickly as we need it. Again, Thanks.
  • Joseph Schultz, District Geotechnical Engineer, PennDOT District 11
  • Geologic Survey use of LiDAR for evaluation of landslides
  • Landslide Review and ModelingVegetation Analysis
  • LandBase SystemsConsistent Vegetation Relief & 3D VegVolume viewed in Google Earth
  • RETTEW Geologic ApplicationMining
  • PA DEP evaluating subsidence from longwall mining in western PA
  • PA DEP Bureau of Abandoned Mine Reclamation evaluating LiDAR for use to replace project-specific flights and photogrammetric work
  • I am IMPRESSED! I have been harping on coal mining consultants to get better surface contouring for some time now (they still just digitize the USGS 7.5 minute topo contours into ACAD). I argue that the accuracy standards and contour intervals are not good enough for the large-scale maps that they submit (usually 1:4800 or 1:2400). Now we can really get down to business. We can accurately map coal contours, confidently design erosion and sediment controls, do volumetric calculations, etc, etc. I cannot thank you enough.
  • Scott Barnes, P.G., Moshannon District Mining Office
  • Corps of Engineers
  • Clymer, PA - Flood Damage Reduction Project to design and construct flood control measures to protect Clymer Borough from flood related damages up to the 100-year level flood from Two Lick Creek and its tributary Dixon Run.
  • Conemaugh Reservoir - Supplement PAMAP data with bathymetric surveys to build a complete terrain model for the reservoir.     
  • Monongahela and Youghiogheny Rivers - Supplement PAMAP data with existing river sounding data to evaluate pool changes.  These evaluations include the effects of pool changes on properties along the rivers.
  • East Branch Dam Break - Supplement PAMAP data with existing river sounding data as well as new bathymetric survey data to build a complete terrain model of the reservoir basin as well as a complete terrain model from East Branch Dam (East Branch Clarion River) to the confluence with Allegheny River continuing on the Allegheny River to Pittsburgh. 
  • InformationPAMAP Markelcmarkel@geographit.com814-360-8406
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