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Mapping Piedmont Landforms in Arizona Using ArcGIS and the Trimble GeoXT Handheld GPS Receiver Anthony B. Alvarado, EIT an...
TASK 2.6 GEOMORPHIC EVALUATION  AND LANDFORM STABILITY ASSESSMENT STUDY AREA (146 mi 2 ) Buckeye/Sun Valley Area Drainage ...
Geomorphic Evaluation and Landform Stability Assessment Subtasks <ul><ul><li>Piedmont Landform Delineation </li></ul></ul>...
<ul><li>Field Verification using  ATV-mounted Trimble GeoXT GIS-based GPS. </li></ul>Trimble GeoXT
Trimble GeoXT <ul><li>Applications of the Trimble GeoXT </li></ul><ul><ul><li>Navigation & Tracking </li></ul></ul><ul><ul...
Trimble GeoXT <ul><li>Free Real-Time GPS Correction: WAAS </li></ul><ul><ul><li>Wide Area Augmentation System created by F...
<ul><li>ArcPad 6.0.3 </li></ul><ul><ul><li>Runs like a simpler version of ArcView 8. </li></ul></ul><ul><ul><li>File Types...
Piedmont Landform Delineation and Stability Assessment <ul><li>In-house mapping using ArcGIS </li></ul><ul><li>Stage 1: De...
Piedmont Landform Delineation and Stability Assessment 2003 Aerial Photography, Soils, and 10-ft Topography
Piedmont Landform Delineation and Stability Assessment Surficial Geology Mapping & Landforms
Piedmont Landform Delineation and Stability Assessment Flood Hazard Mapping & Stability Assessment
Piedmont Landform Delineation and Stability Assessment 0 2 miles 0 2 miles
Piedmont Landform Delineation and Stability Assessment Track Log Data Points
Piedmont Landform Delineation and Stability Assessment The Track Log Track Log DBF Table
Existing Conditions Assessment of Primary Washes
Existing Conditions Assessment of Primary Washes Marking Waypoints and Photos
Existing Conditions Assessment of Primary Washes Surveying Cross-Sections
Existing Conditions Assessment of Primary Washes View Downstream View Upstream Primary Wash 23 – Cross Section 47 Distance...
Delineation of Erosion Hazard Setbacks
Sediment Yield Analysis Sub-Basins, NRCS Soils, Topography, Slopes, and 2003 Aerial Photography
SUMMARY <ul><li>BSV ADMS Geomorphic Evaluation and Landform Stability Assessment Mapping Using ArcGIS </li></ul><ul><li>Fi...
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Mapping Piedmont Landforms in Arizona Using ArcGIS and the Trimble GeoXT Handheld GPS Receiver

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Arid Regions Conference 2004 Presentation

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Mapping Piedmont Landforms in Arizona Using ArcGIS and the Trimble GeoXT Handheld GPS Receiver

  1. 1. Mapping Piedmont Landforms in Arizona Using ArcGIS and the Trimble GeoXT Handheld GPS Receiver Anthony B. Alvarado, EIT and William J. Spitz, R.G.
  2. 2. TASK 2.6 GEOMORPHIC EVALUATION AND LANDFORM STABILITY ASSESSMENT STUDY AREA (146 mi 2 ) Buckeye/Sun Valley Area Drainage Master Study Hassayampa River White Tank Mountains Sun Valley Parkway Wagner Wash Buckeye FRS 2 Buckeye FRS 1 Area 4 Area 3 Granite Reef Aqueduct Buckeye FRS 3 I-10 TASK 2.6 STUDY AREA
  3. 3. Geomorphic Evaluation and Landform Stability Assessment Subtasks <ul><ul><li>Piedmont Landform Delineation </li></ul></ul><ul><ul><ul><li>Pediments, Relict Fans, Alluvial Fans, Alluvial Plains </li></ul></ul></ul><ul><ul><li>Piedmont Landform Stability Assessment </li></ul></ul><ul><ul><ul><li>Stable vs Unstable Areas </li></ul></ul></ul><ul><ul><li>Existing Conditions Assessment of Primary Washes </li></ul></ul><ul><ul><ul><li>160 miles of washes </li></ul></ul></ul><ul><ul><li>Delineation of Erosion Hazard Setbacks </li></ul></ul><ul><ul><ul><li>White Tanks Wash, other channels in Areas 2 & 3 </li></ul></ul></ul><ul><ul><li>Sediment Yield Study </li></ul></ul><ul><ul><ul><li>100-year storm event for each Flood Retarding Structure. </li></ul></ul></ul>
  4. 4. <ul><li>Field Verification using ATV-mounted Trimble GeoXT GIS-based GPS. </li></ul>Trimble GeoXT
  5. 5. Trimble GeoXT <ul><li>Applications of the Trimble GeoXT </li></ul><ul><ul><li>Navigation & Tracking </li></ul></ul><ul><ul><li>Georeferencing Field Photos </li></ul></ul><ul><ul><li>Marking Waypoints or Hazards </li></ul></ul><ul><ul><li>Taking Cross-Sections </li></ul></ul><ul><ul><li>Verifying Boundary Delineations </li></ul></ul><ul><ul><li>Real Time Mapping </li></ul></ul>
  6. 6. Trimble GeoXT <ul><li>Free Real-Time GPS Correction: WAAS </li></ul><ul><ul><li>Wide Area Augmentation System created by FAA </li></ul></ul><ul><ul><ul><li>Helps guide aircraft in reduced weather conditions </li></ul></ul></ul><ul><ul><ul><ul><ul><li>http://gps.faa.gov/ </li></ul></ul></ul></ul></ul><ul><li>Accuracy </li></ul><ul><ul><li>Statistics from work in Arizona: </li></ul></ul><ul><ul><ul><li>HDOP: 81% of the time, 1.5m accuracy or better </li></ul></ul></ul><ul><ul><ul><li>VDOP: 44% of the time, 1 – 2m accuracy </li></ul></ul></ul><ul><ul><li>The more time at a location, the better the accuracy. </li></ul></ul>
  7. 7. <ul><li>ArcPad 6.0.3 </li></ul><ul><ul><li>Runs like a simpler version of ArcView 8. </li></ul></ul><ul><ul><li>File Types: Shapefiles (GIS info), and MrSID or JPEG images (not Tiffs) </li></ul></ul><ul><li>GPS Photolink </li></ul><ul><ul><li>Runs separate from GeoXT </li></ul></ul><ul><ul><li>Uses the Track Log along with a time synch photo. </li></ul></ul>Trimble GeoXT
  8. 8. Piedmont Landform Delineation and Stability Assessment <ul><li>In-house mapping using ArcGIS </li></ul><ul><li>Stage 1: Delineate lateral limits of the various piedmont landforms using: </li></ul><ul><ul><li>Existing Reports and Studies </li></ul></ul><ul><ul><li>Soils Maps (NRCS) </li></ul></ul><ul><ul><li>Geologic Maps (AZGS) </li></ul></ul><ul><ul><li>Flood Hazard Maps (AZGS) </li></ul></ul><ul><ul><li>FCDMC Topographic Maps (10-ft contour interval) </li></ul></ul><ul><ul><li>Sequential Aerial Photography (FCDMC ) </li></ul></ul><ul><li>Stage 2: Delineate Stable Areas vs Unstable Areas </li></ul><ul><ul><li>Use historic aerial photo analysis to modify maps </li></ul></ul>
  9. 9. Piedmont Landform Delineation and Stability Assessment 2003 Aerial Photography, Soils, and 10-ft Topography
  10. 10. Piedmont Landform Delineation and Stability Assessment Surficial Geology Mapping & Landforms
  11. 11. Piedmont Landform Delineation and Stability Assessment Flood Hazard Mapping & Stability Assessment
  12. 12. Piedmont Landform Delineation and Stability Assessment 0 2 miles 0 2 miles
  13. 13. Piedmont Landform Delineation and Stability Assessment Track Log Data Points
  14. 14. Piedmont Landform Delineation and Stability Assessment The Track Log Track Log DBF Table
  15. 15. Existing Conditions Assessment of Primary Washes
  16. 16. Existing Conditions Assessment of Primary Washes Marking Waypoints and Photos
  17. 17. Existing Conditions Assessment of Primary Washes Surveying Cross-Sections
  18. 18. Existing Conditions Assessment of Primary Washes View Downstream View Upstream Primary Wash 23 – Cross Section 47 Distance (ft) Elevation (ft) View Downstream
  19. 19. Delineation of Erosion Hazard Setbacks
  20. 20. Sediment Yield Analysis Sub-Basins, NRCS Soils, Topography, Slopes, and 2003 Aerial Photography
  21. 21. SUMMARY <ul><li>BSV ADMS Geomorphic Evaluation and Landform Stability Assessment Mapping Using ArcGIS </li></ul><ul><li>Field Verification & Data Collection using Trimble GeoXT </li></ul><ul><li>Summary of Results: </li></ul><ul><ul><li>Identified and delineated 16 new active alluvial fans </li></ul></ul><ul><ul><li>Numerous other unstable areas delineated </li></ul></ul><ul><ul><li>Existing conditions assessment of 160 miles of washes </li></ul></ul><ul><ul><li>Field verification of over 20 miles of erosion setbacks </li></ul></ul>
  22. 22. Questions - Comments

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