Monday, May 12, 2008

Reed Creek Watershed final

Bolstad Chapter 11 Terrain Analysis

Terrain analysis is important in GIS because terrain dictates how water flows and where it collects, how much sunlight hits a place throughout the day/year, and what can be seen from where in different landscapes. DEMs provide important information about terrain: hillshade, slope, and aspect can be derived from this type of data. It's also possible to determine flow through and watershed boundaries for hydrologic functions with a DEM. When working with this raster data we can use 3D analyst or spatial analyst extensions.