Input data files for Dietrich et al. Chl-a and nutrient random forest modeling

Input data for the models originally from:

EPA, U. S. WSIO Indicator Data Library, <https://www.epa.gov/wsio/wsio-indicator-data-library> (2023).

Platt, L. R., Spaulding, S.A., Covert, A., Murphy, J.C., and Raynor, N. A national harmonized dataset of discrete chlorophyll from lakes and streams (2005-2022).  (2023). https://www.sciencebase.gov/catalog/item/638f5472d34ed907bf7c8f23

Saad, D. A., Argue, D.M., Schwarz, G.E., Anning, D.W., Ator, S.W., Hoos, A.B., Preston, S.D., Robertson, D.M., and Wise, D.R., 2019. Water-quality and streamflow datasets used for estimating long-term mean daily streamflow and annual loads to be considered for use in regional streamflow, nutrient and sediment SPARROW models, United States, 1999-2014.  (2019). https://doi.org/10.3133/sir20195069