We appreciate the comments by Graham and Hubbert (2012) regarding our finding (Bales et al., 2011) that water stored in deeper soils and weathered granitic rock (regolith) provides a significant fraction of water for forest evapotranspiration. Our multi-year hydrologic measurements confirm and complement their earlier finding that moisture supplies deeper in the critical zone maintain healthy forested ecosystems in the southern Sierra Nevada despite shallow soils and a typical long dry season during the summer and fall. Indeed, we were unaware of some of the references presented in their comment, specifically the early reference by Arkley (1981),...

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