1. Mapping Alta Ski Area’s Infrastructure System By Elise Morgan December 1, 2011

2. Why does Alta Ski Area Need GIS? Alta’s entire infrastructure was either: Hand drawn onto topographic maps or graph paper Drawn into AutoCAD and not spatially referenced In the minds of some of our top people who could leave and take all that valuable info with them.

5. Goals for the summer of 2011: 1)Collect field data on Alta’s infrastructure 2)Collect field data on Alta’s existing trail system 3)Take what we currently have in AutoCAD and convert to GIS

6. What I used to collect field data Trimble Geoexplorer 6000 Series GeoXT Handheld This was chosen over a Garmin GPS unit primarily due to the submeter accuracy that a Trimble can provide

7. All data was collected using the WGS1984 coordinate system Data was post processed using Trimble GPS Pathfinder Office Software (data transfer, differential correction, data export) Data was then opened in ArcCatalog 9.3 where the projected coordinate system UTM NAD83 Zone 12N was selected. Maps were created in ArcMap 9.3

8. The Snowmaking System Consists of 100 water vaults, electrical vaults, weather stations, valves, and pump houses The system is made up of 6 snowmaking lines Information collected for each location included id, water pressure, hydrants, tower guns, and stick guns

13. Alta Ski Area Hiking Trail System Collected field data for two weeks in Sept. 9 primary trails were mapped totaling in 5.5 miles 9 secondary trails were mapped totaling in 4.5 miles

15. Converting from AutoCAD to GIS May 2011 hired University of Utah’s Digit Lab to convert the data. By September we had a working copy of the geodatabase.

17. Lots to do for the Future Verify unknown infrastructure vaults Get info on Alta’s current road system to the Forest Service All the information converted from AutoCAD needs to be spatially verified

18. Thank You for Your Time Are there any questions?