Contribution of rock glacier discharge to late summer and fall streamflow in the Uinta Mountains, Utah, USA

Abstract. Water draining from rock glaciers in the Uinta Mountains of Utah (USA) was analyzed and compared with samples groundwater water primary stream a representative 5000 ha drainage. Rock glacier resembles snowmelt early summer but evolves to higher values d-excess greatly elevated Ca Mg content as melt season progresses. This pattern is consistent models describing transition melting seasonal ice perennial interior late fall. derived this internal appears have been source ∼25 % streamflow study area during September 2021. result emphasizes significant role that can play hydrology high-elevation watersheds, particularly summers following winter below-average snowpack.