Rain and Variable Evapotranspiration, Nieve, and Streamflow
Package name:
hydroravens
Simple reservoir-based hydrological model
Simple "conceptual" hydrological model that may include an arbitrary number of linked linear reservoirs (soil-zone water, groundwater, etc.) as well as snowpack (accumulation from precipitation with T<0; positive-degree-day melt) and evapotranspiration (from external input or Thorntwaite equation).
It also includes a water-balance component to adjust ET (typically the least known input) to ensure that P - Q - ET = 0 over the course of a water year.
Other components plot data and compute the NSE (Nash–Sutcliffe model efficiency coefficient).