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Snohomish County Parks and Recreation Lord Hill Regional Park Trail Mapping

Snohomish County Parks and Recreation Lord Hill Regional Park Trail Mapping. Aaron Bailey Alex Commerer Joe Nguyen. Park Background. 1300 acre public park Established in 1879 Thought to contain over 6 miles of trails Bicycling Hiking Horseback riding Diverse wildlife and animal life

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Snohomish County Parks and Recreation Lord Hill Regional Park Trail Mapping

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  1. Snohomish County Parks and RecreationLord Hill Regional Park Trail Mapping Aaron Bailey Alex Commerer Joe Nguyen

  2. Park Background • 1300 acre public park • Established in 1879 • Thought to contain over 6 miles of trails • Bicycling • Hiking • Horseback riding • Diverse wildlife and animal life • Managed by Snohomish County • Maintained by a community group (Friends of Lord Hill Park)

  3. Lord Hill Regional Park

  4. Why undergo this project? Previous park map • Before our project, the park: • Lacked an accurate trail map • Needed a medium to use for park planning and maintenance to: • update periodically with ease • monitor wear of the trails and streams • Needed a clearer map for public usage and improved public image

  5. Project Purpose • To create a clear trail map of Lord Hill Regional Park • Location of trails within the park • Attribute trail information • Location of streams within the park • Location of where streams and trails intersect

  6. Where are trails located? Where are streams located? Where do streams and trails intersect? Generate the data from Scientific Analysis (We digitalized them by using great DEM layers) Verify with Local Knowledge or True Experience (The stakeholder meeting on 5/26 and follow up feedbacks) Verify with GPS points made from Rangers (The Manager input with the existing information they can provide for the final draft) Need to Know Questions Methodology:

  7. Where are the trails located? • To answer, we used: • Autocad drawing of existing trails • Orthophotos • High Quality DEM for HillShade

  8. Where are streams located? • Using High Quality DEM (Digital Elevation Model), we were able to do Water Shed Analysis. (Flow, Direction and accumulation)

  9. Where do streams and trails intersect? • Using Spatial analysis • Selection by location

  10. Methodology/Analysis Overview – • Overlay aerial photgraphs • Digitize Autocad trails (existing known trails) • Use fine DEM to draw in new trails • Watershed analysis to know location of streams • Verify trail name, location, and existence with community group • Place trails in correct location, remove non-existent trails • Do spatial analysis to show where trails and streams intersect • Verify trails and get attribute data from community group • Submit map to the Park for GPS verification • Finalize map

  11. Project Results • Digital Map containing: • Separate data layers for each trail • Data layer containing streams • Layer showing stream/trail intersection

  12. What they have What they want

  13. Using hillshade to draw trails and move existing trails

  14. New location of trails

  15. Using Orthophotos to draw where hillshade doesn’t work. This is limited due to tree cover.

  16. Map submitted to the park and shareholders (Community group) in a meeting (5/26). • Community group • verifies the existence of • trails and the trail names.

  17. Map with trail names • submitted to the Park • for GPS verification.

  18. Further implications • Stream analysis: • Seasonal flow? • Fish Count/existence? • Trail analysis: • User designation of trails • Soil degradation and trail worthiness • Vegetation • Wildlife

  19. Future recommendations?

  20. Conclusion • Benefits: • Improved future resource management • Knowledge of trail and stream locations • Updateable map • Improved park services to users • Improved public image – more funding? • Cost reduction: • Staff costs • Decreased trail and stream degradation

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