GIS Applications for Historic Presevation (EPAN 2010)


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4th Annual Eastern Panhandle WV GIS Users Group Meeting

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  • Other authors have developed sophisticated algorithms to automatically separate out roof planes and evaluate solar potential for them. I used out of the box tools.
  • Each color represents a range of about 30 degrees aspect. Light green = 129-209, light blue = 209-239 .
  • Each color represents a range of about 3 degrees of slope. Overall, LIDAR data was too coarse for precise slope and aspect values on an individual roof scale, but these tool were effective for identifying roof surfaces that are likely good candidates for solar collectors
  • GIS Applications for Historic Presevation (EPAN 2010)

    1. 1. GIS Applications for Historic Preservation Heather McSharry – Shepherd University
    2. 2. GIS Projects <ul><li>Scanned and Georeferenced 3 historic maps of Jefferson County </li></ul><ul><li>Digitized parcel boundaries with owner attribution </li></ul><ul><li>Digitized historic structure points with name attribution </li></ul><ul><li>Created site plan for management of historic property </li></ul><ul><li>Analyzed rooftop solar power potential in the Shepherdstown, WV Historic District </li></ul>
    3. 3. S. Howell Brown Maps <ul><li>1852 and 1883 maps of Jefferson County showing property lines and landowner names </li></ul><ul><li>Scanned commercially available prints and georeferenced </li></ul><ul><li>Due to age, quality and other factors, match to current data and to each other was not exact </li></ul>
    4. 4. Accuracy example Brown 1883 with current road and County boundary
    5. 5. Property boundary layers <ul><li>Digitized property boundary polygons </li></ul><ul><li>Owner name attribution </li></ul><ul><li>1852 – 883 parcels </li></ul><ul><li>1883 – 1661 parcels </li></ul><ul><li>Tracking ownership over time, land use changes </li></ul>
    6. 6. Shaw-Whitmer 1920s map <ul><li>Scanned and georeferenced </li></ul><ul><li>Digitized place name points with name attribution </li></ul><ul><li>Comparison to current data reveals name changes over time </li></ul>
    7. 7. Peter Burr Farm Site Plan <ul><li>Property boundaries </li></ul><ul><li>Approximate utility line locations </li></ul><ul><li>Archaeology work locations </li></ul>
    8. 8. Peter Burr Farm – Historic Boundary <ul><li>1751 Land Grant polygon by Victoria Myers </li></ul><ul><li>Helps visitors visualize original farm </li></ul><ul><li>Located related historic resources </li></ul>
    9. 9. Historic District Solar Power Potential <ul><li>Need to know: </li></ul><ul><li>Aspect </li></ul><ul><li>Slope </li></ul><ul><li>Area </li></ul><ul><li>Visibility from the street </li></ul>
    10. 10. Aspect results <ul><li>Started with Digital Surface Model built by U. of Vermont, based on 2005 LiDAR data from USDA </li></ul><ul><li>Spatial Analyst tool “Aspect” </li></ul><ul><li>Wide range of values in what should be a uniform roof surface </li></ul>
    11. 11. Slope results <ul><li>Spatial Analyst tool “Slope” </li></ul><ul><li>More consistent than the aspect results, but still too much scatter for a single, precise slope value </li></ul>
    12. 12. Structures with at least one suitable roof area
    13. 13. Roof area measurements <ul><li>Measured each suitable roof surface and calculated area </li></ul><ul><li>545 roof surfaces </li></ul><ul><li>Determined visibility from major streets </li></ul>
    14. 14. Next Steps <ul><li>Field measurements for aspect and slope where needed </li></ul><ul><li>Construct 3 scenarios: </li></ul><ul><ul><li>Solar collectors on all suitable surfaces </li></ul></ul><ul><ul><li>Solar collectors only on surfaces not seen from major streets </li></ul></ul><ul><ul><li>Thin-film solar collectors allowed on visible roof surfaces when the roof type is standing-seam metal. </li></ul></ul><ul><li>Estimate solar power output for each scenario </li></ul>
    15. 15. Thank you: <ul><li>Jefferson County Historic Landmarks Commission </li></ul><ul><li>Jefferson County GIS/Addressing Office </li></ul><ul><li>John Young, USGS </li></ul><ul><li>Victoria Myers, Jefferson County </li></ul><ul><li>University of Vermont </li></ul><ul><li>Dr. Keith Alexander, Shepherd University </li></ul>
    16. 16. Questions?