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Applications in LiDAR, land cover, and hurricane
response.
Geospatial Solutions in Florida
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Get to Know Dewberry …
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Get to Know Dewberry …
18 offices with more than
295 employees in Florida
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Full-Service Delivery
Alternative delivery
Architecture
Civil design
Emergency
management
Energy
Environmental
Geospatial
Land planning &
development
Mechanical/electrical/
plumbing/structural
Planning/programming
Resilience
Risk management &
vulnerability
Security technology
Surveying
Sustainability
Telecommunications
Transportation
Water resources
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Geospatial Data Services
• Data Collection and Development
• Remote Sensing
• Environmental Data Analysis
• Asset Inventory and Condition Assessment
• Data Analysis and Visualization
Strategic Consulting
• Strategic Planning
• Organizational Strategy and Design
• Process Optimization
• Staffing and Training
Enterprise Systems
• Systems Integration
• Application Development
• Mobile Platform Development
Geospatial – What We Do
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Dewberry’s Lidar Footprint in FL
Over 15,000 square miles since 2015 for:
SWFWMDSJRWMDNWFWMDLeon CountyUSACENOAAUSGS 3DEP (with several
end clients)
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Florida Statewide LiDAR Assessment
Study
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Client: Florida Department of Environmental Protection
Methods:
• Determined Florida’s statewide requirements for
high-resolution topographic and
coastal bathymetry data to support 97 mission critical
activities for 30 business
uses
• Cost-benefit analysis study resulted in Net benefits of over
$20M per year for
topographic LiDAR acquired every 2-3 years, and over $28M per
year for
bathymetric LiDAR acquired every 4-5 years
One suggested implementation
scenario for LiDAR acquisition is
based on Water Management
Districts for consistent hydrologic
modeling
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• Dewberry tasked to conduct 3D Nation Study by NOAA
• Update user requirements and benefits for 3DEP
• Understand inland, nearshore, and offshore bathymetric data
requirements and benefits
• Sensor agnostic/Technology Neutral
• Focused on need for, and value of, elevation data
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3D Nation Study
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Client: SWFWMD; Sensor: Riegl VQ1560i
Methods:
• Dewberry performed ground survey, LiDAR acquisition and all
post processing
• High Density: 24 Points-Per-Square-Meter
• Adheres to SWFWMD’s Surveying and Mapping Specifications
LiDAR Topographic Mapping for
Hillsborough County
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Osceola County Lidar
Client: USGS Sensor: Riegl LMSQ680i
Methods:
• USGS QL2+ specifications; BAA Award; 1586 sq miles
• Data acquired Jan – April 2016; Delivered October 2016
• Required to validate the edge tie to existing Polk County
Lidar Spaceship Earth – point cloud
Point cloud showing Epcot Center
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Vertical Accuracy Results better than QL0 (requirement was
QL2)
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Osceola County Vertical Accuracy
Land Cover
Category
# of Survey
Check Points
NVA ― Non-vegetated
Vertical Accuracy
RMSEzSpec: 10.0cm
NVA ― Non-vegetated
Vertical Accuracy
(RMSEz x 1.9600)
Spec: 19.5cm
VVA ― Vegetated
Vertical Accuracy
(95th Percentile)
Spec: 29.4cm
NVA 91 4.26cm (0.14 ft) 8.23cm (0.27 ft) -
VVA 73 - - 13.7cm (0.44 ft)
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Client: SWFWMD Sensor: Teledyne Optech CZMIL
Worked with SWFWMD to test various sensor technologies and
determine the most appropriate sensor to
map Kings Bay Springs System and estimate volume of
unconsolidated material
Topo-Bathymetric LiDAR on the Springs Coast
of Florida
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• The SWFWMD has designated Kings Bay as a priority water body
in its Surface Water Improvement and Management (SWIM) program and
is performing a series of projects to restore the bay.
• To support these efforts, the District intends to develop a
high resolution Digital Elevation Model to help District scientists
and engineers better understand the topography and bathymetry of
Kings Bay.
Why Topobathy LiDAR?
Oops… Sonar missed Hunter’s Spring!
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National Park LiDAR Pilot 2016
Everglades National Park LiDAR Project
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FL Everglades NP LiDAR 2016/2017
USGS – NPS funding Partnership for lidar collection
coveringEverglades National park.
In early 2016, USGS asked Dewberry to fly lidar for the
project.
Dewberry proposed a Pilot Study.
• Lidar sensors vary in their ability to collect data over
acombination of dry land, wetland and open water.
• Due to the unique nature of the Everglades landscape, wewanted
to test lidar sensor technology prior to fullimplementation of
lidar collection for a large area of EvergladesNP.
Cape Sable Seaside Sparrow
Elevation data to support several scientific studies
underwayincluding a study to model marl prairie habitat for the
Cape SableSeaside Sparrow, an endangered non-migratory song bird
residingsolely in the Everglades.
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Pilot Project Report
Dewberry recommended using a narrow-beam topobathy lidaralong
with an NIR capability to conduct the survey
The knowledge gained from the completion of the pilot project
served to better scope the methodology to be used for the
collection of LiDAR over a larger area of the Everglades National
Park.
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• Based on results of pilot study, Dewberry leased:
• Riegl VQ 820G topobathy sensor
• Riegl LMSQ 680i topo (NIR) sensor co-mounted with
820G
• Small digital camera Nikon D810 (TrackAir)
Sensor Selection
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• Survey conducted April 19 – May 31, 2017
• 291 flight lines
• 15 mission days, 27 missions
• 148 hours flight time (including transit)
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Everglades National Park Survey
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Topobathy data in the Everglades
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Topobathy data in the Everglades
25 cm profile width
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Seagrass MappingClients: St. Johns River Water Management
District, NOAA, FWC
SWFWMD - Dewberry PM: 1988 – 2001 every two years
Sensors: DMC, Ultracam (Imagery)
Purpose:
• Distribution and extent of seagrass is considered a barometer
of the health estuarine systems.
• Dewberry’s methods yield reliable maps and statistics that
quantify the amount of seagrass
change over time.
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Methods:
• Preflight water conditions monitoring - Turbidity, Biomass,
Rain Events
• Time-sensitive imagery acquisition – Season, Sun Angle,
Tides
• Aerotriangulation and Orthophotograpy
• Field work and Photo Interpretation
• ArcGIS Geodatabase development
• Thematic and Spatial Accuracy Checks
• PSM Certification
Seagrass Mapping
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Reports:
• Quantifies gains and losses of seagrass habitat over time
Seagrass Mapping
Indian River Lagoon, SJRWMD
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Maria Irma
Northern California Wildfires
Dewberry supported DHS/FEMA for 5 major disaster events in
2017
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28 | Powerpoint title goes here Month Day, 2013
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• Classify damage points on 4 tier scale
• > 0 to 2 to 5 to 8 ft = Destroyed (Red)
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Damage Assessments
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Thank you.Questions?
Amar NayegandhiVice [email protected]:
813 421 8642 (office)Cell: 727 967 5005
