Minnesota Elevation Mapping Project Public Meeting Presentation Willmar

Minnesota Elevation Mapping Project Public Meeting Presentation Willmar, Marshall, Worthington, Mankato September 24 th, 2009 9/21/2021 Minnesota Elevation Mapping Project

Minnesota Elevation Mapping Project Agenda for today’s meeting Introductions and Overview (10 minutes) An Introduction to Li. DAR (15 minutes) l The Southeast Minnesota Mapping Initiative The Minnesota Elevation Project (15 minutes) Goals l Timelines l Partnering Opportunities l Q & A (20 minutes) Minnesota Elevation Mapping Project

Minnesota Elevation Mapping Project Steering Committee Tim Loesch – Mn. DNR l Project oversight and technical guidance Chris Cialek – Mn. GEO l State agency coordination and contracting Pete Jenkins – Mn. DOT l Validation point coordination and technical guidance Ron Wencl – USGS l 9/21/2021 Coordination with. Elevation Federal activities Minnesota Mapping Project

What is Li. DAR? Light Detection and Ranging Laser Rangefinder Inertial Measurement Unit GPS On-Board Computer Produces accurate and detailed land elevation data Hydrologic analysis Construction Pre-design 1 – 2 Foot contours 9/21/2021 Minnesota Elevation Mapping Project Source: Aero-Metric, Inc. Slide courtesy of USGS

Minnesota Elevation Mapping Project Advantages Large areas can be gathered economically Data has a wide variety of applications Can penetrate some level of ground-cover High level of accuracy and precision <1 meter horizontal l <15 cm vertical l 3 cm vertical seperation l 9/21/2021 Minnesota Elevation Mapping Project

Minnesota Elevation Mapping Project Limitations Limited window of opportunity to collect Vegetation and snow free periods in the spring and fall l Flooding is bad too! l Cannot penetrate Water l Heavy canopy cover l Rain, Snow, Clouds l Lots of data volume New technology data Minnesotaand Elevation Mapping Project

Minnesota Elevation Mapping Project The typical Li. DAR Project involves Definition of Project Requirements l Accuracy, Extent, Projection, Delivery Formats Mission planning & execution Data Processing Product Generation Data Delivery/distribution Validation and Acceptance Minnesota Elevation Mapping Project

Minnesota Elevation Mapping Project Saturday August 18 th – 2007 Tropical Storm Erin 24 -hour rain totals 15. 10” Hokah l 17” – Caledonia l • (unofficial) 9/21/2021 Minnesota Elevation Mapping Project

Minnesota Elevation Mapping Project Towns Evacuated Stockton, Houston, Elba, Minnesota City and portions of Winona Whitewater State Park 4, 200 Homes Damaged 7 Deaths $67 Million Damage 9/21/2021 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 Minnesota Elevation Mapping mitigation 9/21/2021 Project

Minnesota Elevation Mapping Project Great Example of Cooperation and Partnering $625 K – State of MN (flood recovery funds) l l DNR – Project Management and oversight DOT – Validation and project support $75 K – USGS Cooperative Agreement $122 K – Mower and Freeborn Counties l l l Shell Rock River Watershed District Turtle Creek Watershed District Cedar River Watershed District County Governments l 9/21/2021 l Surveyors Minnesota Elevation Mapping GIS Technicians Project

Minnesota Elevation Mapping Project Objectives To support flood mitigation and prevention efforts Produce a Highly Accurate Elevation Data set FEMA specifications Publicly available data – no restrictions 9/21/2021 Minnesota Elevation Mapping Project

Minnesota Elevation Mapping Project Deliverables Classified LAS Files l Vegetation, Buildings, Bare Earth, Bridges Edge of Water Break lines 2’ Contours – Break line Enforced 1 meter DEM units in meters – Break line Enforced Projection UTM Zone 15 projection, NAD 83 Datum Minnesota Elevation Mapping 9/21/2021 Vertical Datum NVD 88 Project

Minnesota Elevation Mapping Project 9/21/2021 Minnesota Elevation Mapping Project

Breaklines 9/21/2021 Minnesota Elevation Mapping Project

New Geographic Information Office GEOSPATIAL COORDINATION Coordination, Outreach, Communication Data Coordination Dr. David Arbeit Minnesota’s Geographic Information Officer Technology Coordination Training Data Services Web Services TECHNICAL INFRASTRUCTURE Guidance Consulting & Project Support TECHNICAL SUPPORT www. gis. state. mn. us/committee/ MSDI

Minnesota Elevation Mapping Project Minnesota Statewide Projects Digital Elevation Committee l Governor’s Council on Geographic Information Working to achieve publicly available, high accuracy statewide elevation data l Federal, State and County representatives Limited funding Ensure data compatibility across collects via standards l Provided guidance and technical expertise l 9/21/2021 Minnesota Elevation Mapping Project

Minnesota Elevation Mapping Project Minnesota Clean Water Legacy Act Citizens of the state have invested in water quality High resolution elevation data can be used for all future water quality projects Legislative leadership from: Representative Rick Hanson (39 A Dakota Co. ) Senator Ellen Anderson (66 St. Paul) 9/21/2021 Minnesota Elevation Mapping Project

Minnesota Elevation Mapping Project Scope and Costs 40, 000 square miles to complete state $8. 5 million Supported Funding $2. 8 Million FY 10 $2. 8 Million FY 11 Return to Legislature for additional $2. 9 million if necessary 9/21/2021 Minnesota Elevation Mapping Project

Minnesota Elevation Mapping Project The Schedule July Form steering committee September Public Meetings October Design RFP November Post RFP December Award contract(s) Spring 2010 First acquisition flight Fall 2010 Data delivery 9/21/2021 Minnesota Elevation Mapping Project

Minnesota Elevation Mapping Project Three Phases SOUTHWEST – including Minnesota River Basin CENTRAL LAKES Mississippi River Basin ARROWHEAD – Lake Superior Minnesota Elevation Mapping Basin 9/21/2021 Project

Minnesota Elevation Mapping Project Anticipated Project Deliverables Point data – Li. DAR LAS files Edge of water break lines 2’ Contours – Break line Enforced 1 meter DEM units in meters – break line enforced Projection and Datum UTM Zone 15 projection, NAD 83 datum Vertical Datum NAVD 88 NO concurrent ortho-imagery 9/21/2021 Minnesota Elevation Mapping Project

Minnesota Elevation Mapping Project Data will be publicly available DNR and Mn. GEO l Actively exploring web delivery options • Web Services – Print a map with an Air Photo backdrop with 2’ contours? • Clip and Ship products USGS l National Elevation Dataset (NED http: //ned. usgs. gov/) • Raster DEMs 9/21/2021 l Minnesota Elevation Mapping Project Center for Li. DAR Coordination and Knowledge

SE Mn Users Group Li. DAR Viewer - http: //iwi. houstoneng. com/iwi_lidar/iwi. html 9/21/2021 Minnesota Elevation Mapping Project

Minnesota Elevation Mapping Project Data will be publicly available DNR and Mn. GEO l Actively exploring web delivery options • Web Services – Print a map with an Air Photo backdrop with 2’ contours? • Clip and Ship products USGS l National Elevation Dataset (NED http: //ned. usgs. gov/) • Raster DEMs 9/21/2021 l Minnesota Elevation Mapping Project Center for Li. DAR Coordination and Knowledge

Minnesota Elevation Mapping Project Partnering Opportunities County and local government l County GIS Coordinator • Point of Contact for Data Delivery • Data conversion and distribution within the county l Survey/Engineering point of contact • Validation point collection l Sharing of existing high-resolution data Federal l 9/21/2021 Cost sharing opportunities to stretch $’s Minnesota Elevation Mapping Project

Minnesota Elevation Mapping Project Vertical Accuracy Validation Surveyed points with x, y, z 100 Points per County l 20 points in each of 5 cover categories l Help from county surveyors and other staff Why do we need this? Data Validation – we got what we bought l Data Integrity – we want people to trust the data l 9/21/2021 Minnesota Elevation Mapping Project

Minnesota Elevation Mapping Project SE Minnesota 1, 092 Surveyed Validation Points! 9/21/2021 Minnesota Elevation Mapping Project

SE Minnesota Li. DAR Update Winona County Validation Report RMSE across cover Types 0, 250 0, 196 0, 200 0, 166 0, 150 0, 172 0, 161 0, 136 0, 127 L 1 O L 2 T L 3 B L 4 F 0, 100 L 5 U Overall 0, 050 0, 000 RMSE 9/21/2021 Minnesota Elevation Mapping Project

Minnesota Elevation Mapping Project Winona County Validation Report 0, 2 Vertical Error Distribution 0, 1 0 L 1 O -0, 1 L 2 T L 3 B -0, 2 L 4 F L 5 U -0, 3 -0, 4 -0, 5 175 9/21/2021 225 275 325 Minnesota Elevation Mapping Project 375 425

Minnesota Elevation Mapping Project Thank you for attending Q&A 9/21/2021 Minnesota Elevation Mapping Project