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GIS In Maryland

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GIS In Maryland Ken Miller ... Howard & Montgomery Use FEMA specification Aerial Imagery Elevation Geodetic Control Boundaries Surface Waters Transportation Land ... – PowerPoint PPT presentation

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Title: GIS In Maryland


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 124K maps

6
What is the SHA Shared Centerline Program?
  • Use of same centerline where possible
  • Use of linked/related centerline through unique
    IDs 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 12400 scale centerline
    data of every public roadway
  • Adding ramps, spurs, aux roads, rabs
  • 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

10
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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 12400 scale orthophoto production
  • Leaf off
  • 2 meter DEM grid
  • 20 check-points per land cover category

18
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
I-Team Plan for Digital Elevation Model Production
  • Use MSGIC specification

Maryland Geographic Data Implementation Team
Plan, July 2001
35
Basic Specifications
  • 12400-scale resolution
  • 0.25 meter pixel
  • Based on statewide DEM 1200x1800 meter grid
  • State Plane NAD 83 meters

36
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37
2004
2004
2003
2003
2002
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 UME
S
40
LIDAR 2004
  • DNR St. Marys 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
  • Marylands 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_at_dnr.state.md.us
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