TY - RPRT TI - Rethinking groundwater flow on the South Rim of the Grand Canyon, USA: Characterizing recharge sources and flow paths with environmental tracers AU - John E. Solder AU - Kimberly R. Beisner AU - Jessica R. Anderson AU - Donald J. Bills PY - 2020 DO - 10.1007/s10040-020-02193-z UR - https://pubs.usgs.gov/publication/70210993 ID - 70210993 ER -