Maryland Statewide Road Centerline and Geospatial Data Program

1. GIS In Maryland Ken Miller Director, Watershed Information Services

2. Significant Activities • Cooperative Road Centerline • Detailed Digital Elevation Models using LIDAR • Large-scale digital orthophoto production • Partnership Building

3. The Maryland Statewide Cooperative Road Centerline Highway Information Services Division

4. Working Together to Integrate the State one County at a time. A Sustainable Partnership for Success

5. Who SHA Highway Information Services Division • Statutory Mandate for Public Road Data Collection • Public Road Inventory Database • Highway Mapping/Cartography • GIS-based and attributed public highway system centerline, numerous map products and applications • SHA has centerline currently good for planning, and 1:24K maps

6. What is the SHA Shared Centerline Program? • Use of same centerline where possible • Use of linked/related centerline through unique ID’s will support different geometries • Help keep data up to date through digital spatial data updates on both sides • Each party does what they do best

7. What Are the Qualities of the Data Under Development? • SHA has current centerline of major roads • SHA is working towards 1:2400 scale centerline data of every public roadway • Adding ramps, spurs, aux roads, rab’s • SHA also looking for improved road names as well as addresses • Willingness to share maintenance and data in future

8. Benefits to State and Local Government • MEMA • Homeland Security • EOC Emergency Management • County Planning and Public Works • County and Municipal 911 Call Centers • Fulfills Phase II accuracy requirement • Mutual Aid • Mapping State Health Concerns (ex. SARS, WestNile Virus, Flu) • Voter Registration Database (Board of Elections)

9. Leveraging Existing Projects • HISD Investment in Statewide Road Data • Existing Annual Highway Inventory Processes • Highly Accurate County Data

14. Status • 17 of 23 counties participating at some level • Data from 11 counties received by SHA • 2 counties completed: Howard & Montgomery

15. Significant Activities • Cooperative Road Centerline • Detailed Digital Elevation Models using LIDAR • Large-scale digital orthophoto production • Partnership Building

16. LIDAR 101 • Light Detection and Ranging • Laser & light detector mounted in aircraft • GPS and inertial navigation • Data storage systems

17. Basics (cont.) • Approximately 1.5 points per meter2 • Precise measurements - RMSE 18.5 cm (~ 7.5”) • Supports 2’ contour mapping • Supports 1:2400 scale orthophoto production • Leaf off • 2 meter DEM grid • 20 check-points per land cover category

18. Land Ownership Transportation Surface Waters Boundaries Elevation Geodetic Control Aerial Imagery I-Team Plan for Digital Elevation Model Production • Use FEMA specification Maryland Geographic Data Implementation Team Plan, July 2001

19. Statewide DEM Grid • 3600 meters square • Row and column identifier

20. Predicted Tide

21. Last Return Elevation

22. Bare-Earth Elevation

23. Last Return Elevation

24. Bare-Earth Elevation

25. Last Return Elevation

26. Bare-Earth Elevation

27. Bare-Earth DEM

28. Bare-Earth DEM

29. Bare-Earth DEM 2-meter Cells

30. Intensity Image

31. Intensity Image

32. LIDAR 2002/2003 2004

33. Significant Activities • Cooperative Road Centerline • Detailed Digital Elevation Models using LIDAR • Large-scale digital orthophoto production • Partnership Building

34. Land Ownership Transportation Surface Waters Boundaries Elevation Geodetic Control Aerial Imagery I-Team Plan for Digital Elevation Model Production • Use MSGIC specification Maryland Geographic Data Implementation Team Plan, July 2001

35. Basic Specifications • 1:2400-scale resolution • 0.25 meter pixel • Based on statewide DEM 1200x1800 meter grid • State Plane NAD 83 meters

37. 2004 2004 2003 2002 2003 2002 2004 2004 2002 2004 2004

38. Significant Activities • Cooperative Road Centerline • Detailed Digital Elevation Models using LIDAR • Large-scale digital orthophoto production • Partnership Building

39. MD DNR NOAA\CSC Wicomico Dorchester Talbot SU UMES

40. LIDAR 2004 • DNR – St. Mary’s & part of Charles • Charles – completed their county • Anne Arundel – paid for their county • Howard – paid for their county • All through 1 contract vehicle • Same spec, same process • Significant price break

41. C2K Accomplishments • 4.1.3.3 Protect 20% of Watershed • 4.1.5 Develop and maintain in each jurisdiction a strong GIS system

42. 4.1.3.3 - 20% Protection • 19.89% of Maryland protected • DNR, MDP share responsibility of mapping protected lands • But . . . acres protected NOT all GIS acreages

43. Landscape Analysis used in Targeting Acquisitions • Potential properties screened against Green Infrastructure • Maps created to support acquisition request (BPW)

44. 4.1.5 – Strong GIS • Maryland’s Implementation Team (I-Team) Plan • MDP continues Smart Growth Data Partnership • DNR provides free access to its GIS data via Internet (www.dnr.maryland.gov\gis) • DNR and MDP are working with local governments to improve the Protected Lands database • DNR works closely with counties sponsoring Rural Legacy applications • MDP conducted its “Development Capacity Study” to inventory lands within Priority Funding Areas • DNR conducted a Cooperative Geospatial Data Survey with local governments • Maryland Metadata Resource Guide – www.marylandGIS.net

45. Thanks Ken Miller 410.260.8751 kenmiller@dnr.state.md.us