Advective transport observations with MODPATH-OBS—Documentation of the MODPATH observation process, using four types of observations and Predictions
USGS – 2013 Hanson, R.T., Kauffman, L.K., Hill, M.C., Dickinson, J.E., and Mehl, S.W., 2013, Advective transport observations with MODPATH-OBS—Documentation of the MODPATH observation process,