RSPARROW 2019

RSPARROW is an open-source system of R scripts and functions for executing and evaluating SPARROW models, with output generated in graphical, map, and tabular forms. Users operate the system in RStudio from a single R control script that manages access to the supporting input files and functions. The documentation describes the steps necessary to estimate the static version of the model. Static SPARROW models provide reach-level predictions (and uncertainties) of the long-term mean annual water-quality loads and flow-weighted concentrations. The predictions also include the shares of the load attributable to individual upstream sources and predictions of the mass quantities of the total load and individual sources that are delivered [...]