airGRiwrm: 'airGR' Integrated Water Resource Management

#' Catchment attributes and hydro-meteorological timeseries for some gauging stations on the Severn River
#'
#' @format a [list] with 2 items:
#'
#' - "BasinsInfo" which contains a [data.frame] with Gauging station identifier, name, coordinates (GPS), area (km2), mean elevation (m), station type, flow period start and end, the bank full flow (m3/s), the identifier of the following downstream station and the distance to the following downstream station
#' - "BasinObs" which contains a [list] with an item by gauging station which contains a [data.frame] with [POSIXct] dates, precipitations (mm/time step), potential evapotranspiration (mm/time step) and measured flows (mm/time step)
#'
#' @source These data are extracted from the CAMEL-GB dataset.
#'
#' Coxon, G.; Addor, N.; Bloomfield, J.P.; Freer, J.; Fry, M.; Hannaford, J.; Howden, N.J.K.; Lane, R.; Lewis, M.; Robinson, E.L.; Wagener, T.; Woods, R. (2020). Catchment attributes and hydro-meteorological timeseries for 671 catchments across Great Britain (CAMELS-GB). NERC Environmental Information Data Centre. (Dataset). \doi{10.5285/8344E4F3-D2EA-44F5-8AFA-86D2987543A9}
"Severn"