minnesota elevation mapping project public meeting presentation willmar, marshall, worthington,...
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Minnesota Elevation Mapping Project
Public Meeting PresentationWillmar, Marshall, Worthington, Mankato
September 24th, 2009
04/10/23 Minnesota Elevation Mapping Project
Minnesota Elevation Mapping Project
Agenda for today’s meetingIntroductions and Overview (10 minutes)
An Introduction to LiDAR (15 minutes) The Southeast Minnesota Mapping Initiative
The Minnesota Elevation Project (15 minutes) Goals Timelines Partnering Opportunities
Q & A (20 minutes)
Minnesota Elevation Mapping Project
Minnesota Elevation Mapping Project
Steering CommitteeTim Loesch – MnDNR
Project oversight and technical guidance
Chris Cialek – MnGEO State agency coordination and contracting
Pete Jenkins – MnDOT Validation point coordination and technical guidance
Ron Wencl – USGS Coordination with Federal activities
04/10/23 Minnesota Elevation Mapping Project
04/10/23 Minnesota Elevation Mapping Project
What is LiDAR?What is LiDAR?
LiLight ght DDetection etection aand nd RRangingangingLaser RangefinderLaser RangefinderInertial Measurement UnitInertial Measurement UnitGPSGPSOn-Board ComputerOn-Board Computer
Produces accurate and detailed land Produces accurate and detailed land elevation dataelevation data
Hydrologic analysisHydrologic analysisConstruction Pre-designConstruction Pre-design1 – 2 Foot contours1 – 2 Foot contours
Slide courtesy of USGS
Source: Aero-Metric, Inc.
Minnesota Elevation Mapping Project
AdvantagesLarge areas can be gathered economicallyData has a wide variety of applicationsCan penetrate some level of ground-coverHigh level of accuracy and precision
<1 meter horizontal <15 cm vertical 3 cm vertical seperation
04/10/23 Minnesota Elevation Mapping Project
Minnesota Elevation Mapping Project
LimitationsLimited window of opportunity to collect
Vegetation and snow free periods in the spring and fall Flooding is bad too!
Cannot penetrate Water Heavy canopy cover Rain, Snow, Clouds
Lots of data volumeNew technology and data
Minnesota Elevation Mapping Project
Minnesota Elevation Mapping Project
The typical LiDAR Project involvesDefinition of Project Requirements
Accuracy, Extent, Projection, Delivery Formats
Mission planning & executionData ProcessingProduct GenerationData Delivery/distributionValidation and Acceptance
Minnesota Elevation Mapping Project
04/10/23 Minnesota Elevation Mapping Project
Minnesota Elevation Mapping Project
Saturday August 18th – 2007Tropical Storm Erin24-hour rain totals
15.10” Hokah 17” – Caledonia
• (unofficial)
04/10/23 Minnesota Elevation Mapping Project
Minnesota Elevation Mapping Project
Towns EvacuatedStockton, Houston, Elba, Minnesota City and portions of WinonaWhitewater State Park
4,200 Homes Damaged7 Deaths$67 Million Damage
04/10/23 Minnesota Elevation Mapping Project
Minnesota Elevation Mapping Project
7 Counties Declared Disaster Areas
Steele, Dodge, Olmsted, Wabasha, Winona, Fillmore, Houston
Special Session Legislation appropriated monies for flood relief and mitigation
04/10/23 Minnesota Elevation Mapping Project
Minnesota Elevation Mapping ProjectGreat Example of Cooperation and Partnering
$625K – State of MN (flood recovery funds) DNR – Project Management and oversight DOT – Validation and project support
$75K – USGS Cooperative Agreement$122K – Mower and Freeborn Counties
Shell Rock River Watershed District Turtle Creek Watershed District Cedar River Watershed District
County Governments Surveyors GIS Technicians
04/10/23 Minnesota Elevation Mapping Project
Minnesota Elevation Mapping Project
ObjectivesTo support flood mitigation and prevention effortsProduce a Highly Accurate Elevation Data setFEMA specificationsPublicly available data – no restrictions
04/10/23 Minnesota Elevation Mapping Project
Minnesota Elevation Mapping Project
DeliverablesClassified LAS Files
Vegetation, Buildings, Bare Earth, Bridges
Edge of Water Break lines2’ Contours – Break line Enforced1 meter DEM units in meters – Break line Enforced
ProjectionUTM Zone 15 projection, NAD83 DatumVertical Datum NVD88
Minnesota Elevation Mapping Project
04/10/23 Minnesota Elevation Mapping Project
Breaklines
04/10/23 Minnesota Elevation Mapping Project
GEOSPATIAL COORDINATION
TECHNICAL INFRASTRUCTURE
TECHNICAL SUPPORT
Coordination, Outreach, Communication
Data Coordination
TechnologyCoordination
Data Services
Web Services
Training
GuidanceConsulting &
Project Support
New Geographic Information Office
Dr. David Arbeit - Minnesota’s Geographic Information Officer
www.gis.state.mn.us/committee/MSDI
Minnesota Elevation Mapping Project
Minnesota Statewide ProjectsDigital Elevation Committee
Governor’s Council on Geographic Information
Working to achieve publicly available, high accuracy statewide elevation data
Federal, State and County representatives
Limited funding Ensure data compatibility across collects via standards Provided guidance and technical expertise
04/10/23 Minnesota Elevation Mapping Project
Minnesota Elevation Mapping Project
Minnesota Clean Water Legacy ActCitizens of the state have invested in water qualityHigh resolution elevation data can be used for all future water quality projects
Legislative leadership from:Representative Rick Hanson (39A Dakota Co.)
Senator Ellen Anderson (66 St. Paul)
04/10/23 Minnesota Elevation Mapping Project
Minnesota Elevation Mapping Project
Project Scope and Costs40,000 square miles to complete state$8.5 million
Supported Funding$2.8 Million FY10$2.8 Million FY11
Return to Legislature for additional $2.9 million if necessary
04/10/23 Minnesota Elevation Mapping Project
Minnesota Elevation Mapping Project
The ScheduleJuly Form steering committeeSeptember Public MeetingsOctober Design RFPNovember Post RFPDecember Award contract(s)Spring 2010 First acquisition flight Fall 2010 Data delivery
04/10/23 Minnesota Elevation Mapping Project
Minnesota Elevation Mapping Project
Three PhasesSOUTHWEST – including Minnesota River BasinCENTRAL LAKES - Mississippi River BasinARROWHEAD – Lake Superior Basin
04/10/23 Minnesota Elevation Mapping Project
Minnesota Elevation Mapping Project
Anticipated Project DeliverablesPoint data – LiDAR LAS filesEdge of water break lines2’ Contours – Break line Enforced1 meter DEM units in meters – break line enforced
Projection and DatumUTM Zone 15 projection, NAD83 datumVertical Datum NAVD88
NO concurrent ortho-imagery
04/10/23 Minnesota Elevation Mapping Project
04/10/23 Minnesota Elevation Mapping Project
Minnesota Elevation Mapping Project
Data will be publicly availableDNR and MnGEO
Actively exploring web delivery options• Web Services
– Print a map with an Air Photo backdrop with 2’ contours?• Clip and Ship products
USGS National Elevation Dataset (NED - http://ned.usgs.gov/)
• Raster DEMs Center for LiDAR Coordination and Knowledge (CLICK)
• LAS Point Cloud Data (http://lidar.cr.usgs.gov/)
SE Mn Users Group
04/10/23 Minnesota Elevation Mapping Project
LiDAR Viewer - http://iwi.houstoneng.com/iwi_lidar/iwi.html
04/10/23 Minnesota Elevation Mapping Project
Minnesota Elevation Mapping Project
Data will be publicly availableDNR and MnGEO
Actively exploring web delivery options• Web Services
– Print a map with an Air Photo backdrop with 2’ contours?• Clip and Ship products
USGS National Elevation Dataset (NED - http://ned.usgs.gov/)
• Raster DEMs Center for LiDAR Coordination and Knowledge (CLICK)
• LAS Point Cloud Data (http://lidar.cr.usgs.gov/)
Minnesota Elevation Mapping Project
Partnering OpportunitiesCounty and local government
County GIS Coordinator • Point of Contact for Data Delivery• Data conversion and distribution within the county
Survey/Engineering point of contact• Validation point collection
Sharing of existing high-resolution data
Federal Cost sharing opportunities to stretch $’s
04/10/23 Minnesota Elevation Mapping Project
04/10/23 Minnesota Elevation Mapping Project
Minnesota Elevation Mapping Project
Vertical Accuracy Validation Surveyed points with x,y,z
100 Points per County 20 points in each of 5 cover categories
Help from county surveyors and other staffWhy do we need this?
Data Validation – we got what we bought Data Integrity – we want people to trust the data
Minnesota Elevation Mapping Project
04/10/23 Minnesota Elevation Mapping Project
SE Minnesota 1,092 Surveyed Validation Points!
SE Minnesota LiDAR Update
04/10/23 Minnesota Elevation Mapping Project
Winona County Validation Report
RMSE across cover Types
Minnesota Elevation Mapping Project
04/10/23 Minnesota Elevation Mapping Project
Winona County Validation Report
Minnesota Elevation Mapping Project
Thank you for attendingQ&A
04/10/23 Minnesota Elevation Mapping Project