PAMAP Program LiDARPAMAP Program LiDARLiDAR Workshop - April 21, 2008LiDAR Workshop - April 21, 2008

What is PAMAP and PAMAP LiDAR?What is PAMAP and PAMAP LiDAR?

PAMAP is the digital base map of the PAMAP is the digital base map of the Commonwealth of Pennsylvania. Commonwealth of Pennsylvania.

PAMAP is being created as a seamless, consistent, PAMAP is being created as a seamless, consistent, high-resolution set of digital, geospatial data high-resolution set of digital, geospatial data products and associated services. products and associated services.

The map is being compiled from new high-The map is being compiled from new high-resolution aerial photography and elevation data, resolution aerial photography and elevation data, and from existing digital map resources developed and from existing digital map resources developed by state and federal agencies, counties, regional by state and federal agencies, counties, regional agencies, and municipalities. agencies, and municipalities.

Envisioned in 2001, with operations starting in Envisioned in 2001, with operations starting in 20022002

What is PAMAP?What is PAMAP? Digital orthoimageryDigital orthoimagery LiDAR point cloudsLiDAR point clouds LiDAR-derived products – DEM, LiDAR-derived products – DEM,

contours, and breaklinescontours, and breaklines Land Use/CoverLand Use/Cover Building/Structure data where not Building/Structure data where not

provided by partnersprovided by partners PennPilot historical aerial photographsPennPilot historical aerial photographs

CollaborationCollaboration PAMAP is part of the USGS National MapPAMAP is part of the USGS National Map PAMAP Cooperative Agreement PAMAP Cooperative Agreement

established with 55 of the 67 countiesestablished with 55 of the 67 counties PAMAP is funded primarily by the PA PAMAP is funded primarily by the PA

Department of Conservation and Natural Department of Conservation and Natural Resources (DCNR), with contributions from Resources (DCNR), with contributions from other state agencies, and USGS and FEMAother state agencies, and USGS and FEMA

The PAMAP Program is managed by The PAMAP Program is managed by agreement between DCNR and Penn State agreement between DCNR and Penn State UniversityUniversity

How Did LiDAR Come About?How Did LiDAR Come About?

The topographic mission of the The topographic mission of the Bureau of Topographic and Geologic Bureau of Topographic and Geologic Survey Survey

Desire for very accurate terrain Desire for very accurate terrain statewidestatewide

Recognition of the importance of Recognition of the importance of LiDAR data for many mapping, LiDAR data for many mapping, planning, management, and planning, management, and monitoring effortsmonitoring efforts

How Did LiDAR Come About?How Did LiDAR Come About?

Estimated costs fallingEstimated costs falling Proposal to combine orthoimagery Proposal to combine orthoimagery

and LiDAR effortsand LiDAR efforts Study of synergies among imagery Study of synergies among imagery

and LiDAR effortsand LiDAR efforts Independent review of proposals and Independent review of proposals and

synergiessynergies DCNR providing fundingDCNR providing funding

45,000 sq. mi., approx. 15,000 sq. mi. per year45,000 sq. mi., approx. 15,000 sq. mi. per year

PAMAP LiDAR ApproachPAMAP LiDAR Approach PAMAP elevation data is framework dataPAMAP elevation data is framework data LiDAR is the basis for elevation framework LiDAR is the basis for elevation framework

datadata Flooding is Pennsylvania’s No. 1 hazardFlooding is Pennsylvania’s No. 1 hazard

• Need to address flooding data needsNeed to address flooding data needs• Follow FEMA’s specifications for LiDAR data, Follow FEMA’s specifications for LiDAR data,

but not all MapMod requirementsbut not all MapMod requirements Manage ExpectationsManage Expectations

PAMAP LiDAR ProgramPAMAP LiDAR Program

What is LiDAR?What is LiDAR?

PAMAP LiDAR ProgramPAMAP LiDAR ProgramPAMAP LiDAR CharacteristicsPAMAP LiDAR Characteristics

LiDAR SpecificationsLiDAR Specifications Post spacing – 1.4 metersPost spacing – 1.4 meters Vertical AccuracyVertical Accuracy

• 18.5 cm open areas – 0.61 foot18.5 cm open areas – 0.61 foot• 37 cm forested/vegetated – 1.2 foot37 cm forested/vegetated – 1.2 foot

ClassificationClassification• LiDAR data in LAS formatLiDAR data in LAS format• Bare Earth (2) and Model Key (8)Bare Earth (2) and Model Key (8)

Model key for derived productsModel key for derived products

• Above Ground (1) and (12)Above Ground (1) and (12)• Other classifications also used for smaller Other classifications also used for smaller

numbers of pointsnumbers of points

LiDAR ProductsLiDAR Products Raw data retainedRaw data retained LAS data with classificationsLAS data with classifications

• Organized by PAMAP tile structureOrganized by PAMAP tile structure Derived products by PAMAP tile Derived products by PAMAP tile

structurestructure• DEM – 3.2 foot (1 m) pixelDEM – 3.2 foot (1 m) pixel• Breaklines – from PAMAP orthoimageryBreaklines – from PAMAP orthoimagery

3D shapefile3D shapefile

• Contours – 2-foot C.I.Contours – 2-foot C.I. 3D shapefile3D shapefile

LiDAR PointsLiDAR Points

LiDAR Points – Bare EarthLiDAR Points – Bare Earth

LiDAR Points – Above GroundLiDAR Points – Above Ground

LiDAR Points – Bare EarthLiDAR Points – Bare Earth

LiDAR Points – Above GroundLiDAR Points – Above Ground

LiDAR PointsLiDAR Points

Loyalhanna Gorge Ground PointsLoyalhanna Gorge Ground Points

Loyalhanna Gorge Above-Ground Loyalhanna Gorge Above-Ground PointsPoints

Residential Area Ground PointsResidential Area Ground Points

Residential Area Above-Ground PointsResidential Area Above-Ground Points

DEM - Digital Elevation ModelDEM - Digital Elevation Model

BreaklinesBreaklines

BreaklinesBreaklines

ContoursContours

ContoursContours

MetadataMetadata

Quality AssuranceQuality Assurance Quantitative and qualitative review Quantitative and qualitative review

of LiDARof LiDAR Quantitative review of imagery Quantitative review of imagery Independent vendor teamIndependent vendor team GeoCue/URS DPMS used for multi-GeoCue/URS DPMS used for multi-

participant tracking all data/tilesparticipant tracking all data/tiles

Quality AssuranceQuality Assurance Imagery and LiDAR have passed Imagery and LiDAR have passed

quantitative checks quantitative checks Qualitative review of 2006 LiDAR Qualitative review of 2006 LiDAR

underway underway

How Will Users Get The Data?How Will Users Get The Data?

All PAMAP data distributed in the All PAMAP data distributed in the public domainpublic domain

Widespread distribution of final dataWidespread distribution of final data• Federal – USGS and FEMA distributionFederal – USGS and FEMA distribution• StateState• CountiesCounties• PASDAPASDA• State Data CenterState Data Center

Distribution State/CountyDistribution State/County A geospatial enterprise server A geospatial enterprise server

architecture is established for state architecture is established for state agenciesagencies• All levels of government able to use All levels of government able to use

database and servicesdatabase and services State agencies acquire copies of the State agencies acquire copies of the

datadata All Cooperative Agreement counties All Cooperative Agreement counties

receive a portable hard drive with receive a portable hard drive with datadata

Distribution PASDADistribution PASDA PA Spatial Data Access clearinghousePA Spatial Data Access clearinghouse PAMAP data available without cost or PAMAP data available without cost or

use restrictionuse restriction• ImageryImagery• DEMDEM• ContoursContours

FTP and web services available to FTP and web services available to anyoneanyone

www.pasda.psu.eduwww.pasda.psu.edu

Distribution of LiDAR Point Clouds Distribution of LiDAR Point Clouds (LAS Data)(LAS Data)

Available from PA State Data CenterAvailable from PA State Data Center Offline request onlyOffline request only

• Requested data on portable hard drive Requested data on portable hard drive or DVDor DVD

Contact Data CenterContact Data Center• Email: Email: PaSDC@psu.eduPaSDC@psu.edu• Voice: (717) 948-6336Voice: (717) 948-6336• FAX: (717) 948-6754FAX: (717) 948-6754• Website: Website: http://http://pasdc.hbg.psu.edupasdc.hbg.psu.edu

What Are Users Doing With The What Are Users Doing With The Data?Data?

Land developmentLand development Wind farm sitingWind farm siting Floodplain mappingFloodplain mapping Landslide reviewLandslide review Flood controlFlood control MiningMining EducationEducation Geologic mappingGeologic mapping RescueRescue

Forest Forest classificationclassification

OrienteeringOrienteering ConservationConservation Highway designHighway design Property Property

managementmanagement Resource Resource

explorationexploration HydrologyHydrology

Landslide Review and ModelingLandslide Review and Modeling PennDOT use of LiDAR for evaluation of PennDOT use of LiDAR for evaluation of

landslideslandslides Jay, Thanks, the LiDAR information was exceptionally Jay, Thanks, the LiDAR information was exceptionally

useful. It was much more detailed than we imagined which useful. It was much more detailed than we imagined which was great! We actually are using it on 2 emergency slide was great! We actually are using it on 2 emergency slide projects, one on SR 130 in Penn Hills where we have a road 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, closed due to a slide about 200 feet wide by 800 feet long, the other is being used for rockfall remediation/removal on the other is being used for rockfall remediation/removal on SR 28 in the Harmarville area where we have problems and SR 28 in the Harmarville area where we have problems and recently had a fall where motorists were involved. The recently had a fall where motorists were involved. The information is extremely useful especially when we don't information is extremely useful especially when we don't have the luxury of getting survey as quickly as we need it. have the luxury of getting survey as quickly as we need it. Again, Thanks.Again, Thanks.

Joseph Schultz, District Geotechnical Engineer, PennDOT Joseph Schultz, District Geotechnical Engineer, PennDOT District 11District 11

Geologic Survey use of LiDAR for Geologic Survey use of LiDAR for evaluation of landslidesevaluation of landslides

Landslide Review and ModelingLandslide Review and Modeling

Vegetation AnalysisVegetation Analysis LandBase Systems Consistent Vegetation Relief

& 3D VegVolume viewed in Google Earth

RETTEW Geologic ApplicationRETTEW Geologic Application

MiningMining PA DEP evaluating subsidence from longwall mining in PA DEP evaluating subsidence from longwall mining in

western PAwestern PA PA DEP Bureau of Abandoned Mine Reclamation PA DEP Bureau of Abandoned Mine Reclamation

evaluating LiDAR for use to replace project-specific evaluating LiDAR for use to replace project-specific flights and photogrammetric workflights and photogrammetric work

I am IMPRESSED! I have been harping on coal mining I am IMPRESSED! I have been harping on coal mining consultants to get better surface contouring for some consultants to get better surface contouring for some time now (they still just digitize the USGS 7.5 minute time now (they still just digitize the USGS 7.5 minute topo contours into ACAD). I argue that the accuracy topo contours into ACAD). I argue that the accuracy standards and contour intervals are not good enough standards and contour intervals are not good enough for the large-scale maps that they submit (usually for the large-scale maps that they submit (usually 1:4800 or 1:2400). Now we can really get down to 1:4800 or 1:2400). Now we can really get down to business. We can accurately map coal contours, business. We can accurately map coal contours, confidently design erosion and sediment controls, do confidently design erosion and sediment controls, do volumetric calculations, etc, etc. I cannot thank you volumetric calculations, etc, etc. I cannot thank you enough.enough.

Scott Barnes, P.G., Moshannon District Mining OfficeScott Barnes, P.G., Moshannon District Mining Office

Corps of EngineersCorps 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. 

InformationInformation

PAMAP ProgramPAMAP Programwww.dcnr.state.pa.us/topogeo/pamapwww.dcnr.state.pa.us/topogeo/pamap

www.pamap.infowww.pamap.info

Chris MarkelChris Markelcmarkel@geographit.comcmarkel@geographit.com

814-360-8406814-360-8406