In the course of analyzing attributes of watersheds related to biogeochemical and hydrological processes, we have developed a few standard procedures for making relevant calculations. Some of these are documented below. To download a detailed description of each method in MS Word format, click on the title of interest.
01 Projecting DEMs in ArcGIS.doc
02 Creating a Map of Topographic Index using ArcToolbox
03 Creating a Map of Topographic Index using AML Script
04 Procedure for Obtaining Distribution of TI Values for a Watershed
05 Classifying Topographic Index by Land Use Type
06 Creating TI Distribution Table by Land Use Type
07 Generating Map of Soil Topographic Index
08 Calculating the Proportion of County Covered by Watershed
09 Calculating the Agricultural Proportion of County Covered by Watershed
10 Calculating Area-weighted Means
11 Generating N Deposition Maps for SE US Watersheds
12 Calculating Centroid Position Area and Perimeter
13 Creating a point map of sites and extracting mapped values
14 Extracting Soil Orders from STATSGO
15 Extracting pH and Depth of Surface Soil from STATSGO
16 Using NetCDF Format Files in ArcGIS
17 Using ASCII Format Files in ArcGIS