Attributes for NHDPlus Catchments (Version 1.1) for the Conterminous United States: Hydrologic Landscape Regions
This data set represents the area of Hydrologic Landscape Regions (HLR) compiled for every catchment 
of NHDPlus for the conterminous United States. The source data set is a 100-meter version of Hydrologic 
Landscape Regions of the United States (Wolock, 2003). HLR groups watersheds on the basis of similarities 
in …