Developing Benton County topo map

I am in the #Data Collection stage currently.

Intended users

1. people doing conservation and habitat restoration work
2. hikers and mountain bikers

Desired features

• Contours
• Roads: county, McDonald/Dunn forests
• Parks: federal, state, county, city
• Trails in parks
• Land cover- major vegetation polygons
• Hydro- creeks, rivers, ponds, lakes

Data Collection

Elevations

I want to try to develop a contour layer using DEMs.

I have LiDAR for eastern part of Benton County. (DoGAMI data, source: Benton County GIS) Great data but does not cover entire county, so I need to do some mosaicking.

I can supplement this with other DEM raster data at a lower resolution.

I also have

• 1 and 2 foot contours developed from the LiDAR
• 5 foot contours for some areas
• 2 and 10 foot contours city of Corvallis (in NAD27)