Transcript What Is PAMAP?

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.
The map is being compiled from new highresolution 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 year
PAMAP 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 Program
What is LiDAR?
PAMAP LiDAR Program
PAMAP LiDAR Characteristics
LiDAR 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 Points
LiDAR Points – Bare Earth
LiDAR Points – Above Ground
LiDAR Points – Bare Earth
LiDAR Points – Above Ground
LiDAR Points
Loyalhanna Gorge Ground Points
Loyalhanna Gorge Above-Ground
Points
Residential Area Ground Points
Residential Area Above-Ground Points
DEM - Digital Elevation Model
Breaklines
Breaklines
Contours
Contours
Metadata
Quality Assurance




Quantitative and qualitative review
of LiDAR
Quantitative review of imagery
Independent vendor team
GeoCue/URS DPMS used for multiparticipant 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
• PASDA
• 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
www.pasda.psu.edu
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: [email protected]
• Voice: (717) 948-6336
• FAX: (717) 948-6754
• Website: http://pasdc.hbg.psu.edu
What Are Users Doing With
The Data?









Land development
Wind farm siting
Floodplain mapping
Landslide review
Flood control
Mining
Education
Geologic mapping
Rescue







Forest classification
Orienteering
Conservation
Highway design
Property
management
Resource
exploration
Hydrology
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 Modeling
Vegetation Analysis

LandBase Systems Consistent Vegetation Relief
& 3D VegVolume viewed in Google Earth
RETTEW Geologic Application
Mining




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.
Information
PAMAP Program
www.dcnr.state.pa.us/topogeo/pamap
www.pamap.info
Chris Markel
[email protected]
814-360-8406