This data release consists of the data used to develop SPAtially Referenced Regression On Watershed(SPARROW) attributes models for estimating loads of total phosphorus and total nitrogen in Tennessee streams. These data support the publication containing the Tennessee SPARROW models results (Hoos and others, 2019) and include model input used in the South Atlantic-Gulf Drainages and Tennessee River Basin (SAGT) nutrient SPARROW models (Hoos and McMahon, 2009; Garcia and others, 2011) as well as model input for river basins in Tennessee not included in the domain of the published SAGT SPARROW models. Also included in this data release are model coefficients, the software required to execute the Tennessee SPARROW models, and the model output for all streams in Tennessee. Each data set is listed in this data release with an accompanying file containing metadata for the dataset. For additional details, please refer to the README.txt file. References: Garcia, A.M., Hoos, A.B., and Terziotti, S.E., 2011, A regional modeling framework of phosphorus sources and transport in streams of the southeastern United States, Journal of the American Water Resources Association, v. 47, no. 5, p. 991-1010. (Also available at http://dx.doi.org/10.1111/j.1752-1688.2010.00517.x) Hoos, A.B., and McMahon G., 2009. Spatial analysis of instream nitrogen loads and factors controlling nitrogen delivery to streams in the southeastern United States using spatially referenced regression on watershed attributes (SPARROW) and regional classification frameworks, Journal of Hydrological Processes v. 23, no. 16, p. 2275-2294. Hoos, A.B., Wang, S.H, and Schwarz, G.E., 2019, Adapting a regional water-quality model for local application: a case study for Tennessee, USA, Environmental Modelling & Software, https://doi.org/10.1016/j.envsoft.2019.01.001.