TY - RPRT TI - Estimating and forecasting time-varying groundwater recharge in fractured rock: A state-space formulation with preferential and diffuse flow to the water table AU - Allen M. Shapiro AU - Frederick Day-Lewis PY - 2021 DO - 10.1029/2020wr029110 UR - https://pubs.usgs.gov/publication/70223914 ID - 70223914 ER -