Mean annual solar radiation in the United States Pacific Northwest (1991-2005) summarized for NHDPlus v2 catchments
This spatial data set was created by the U.S. Geological Survey (USGS) to represent mean annual solar 
radiation in the Pacific Northwest region of the United States (Hydro Region 17; Major River Basin 7 (MRB7)) 
for the period between 1991 and 2005 within each incremental watershed delineated in the NNHDPlus v2 …