Wetlands inform how climate extremes influence surface water expansion and contraction
Data sets
Data Tools: 1981-2010 Normals http://www.ncdc.noaa.gov/cdo-web/datatools/normals
Watershed Boundary Dataset http://www.nrcs.usda.gov/wps/portal/nrcs/detail/national/water/watersheds/dataset/?cid=nrcs143_021625
Soil Survey Geographic (SSURGO) Database https://sdmdataaccess.sc.egov.usda.gov
National Wetlands Inventory http://www.fws.gov/wetlands/
The National Hydrography Dataset (NHD) concepts and content http://nhd.usgs.gov/chapter1/ chp1_data_users_guide.pdf
The National Hydrography Dataset (NHD) ftp://nhdftp.usgs.gov/DataSets/Staged/States/FileGDB/ HighResolution
Model code and software
Perturb: Tools for evaluating collinearity http://CRAN.R-project.org/package=perturb