SCCWRP - STREAM CLASSIFICATION AND PRIORITY EXPLORER
The data contain information on the biological condition of streams within California as well as geospatial/field indicators of watershed or water quality. 

This dataset is associated with the following publication:
Beck, M., R. Mazor, S. Johnson, K. Wisenbaker, J. Westfall, P. Ode, R. Hill, C. Loflen, M. Sutula, and …