Selected hydrologic data from Fortymile Wash in the Yucca Mountain area, Nevada, water year 1992

Simulation of Net Infiltration for Present-Day and Potential Future Climates

“…The thin soils, fractured bedrock, and concentrated surface-water flow all contributed to rapid percolation of infiltrated water well below the depth of the effective root zone. In general, the collective time-averaged net-infiltration rates calculated at all borehole sites (DTN: GS960508312212.008 [DIRS 122609]) using the measured water-content changes indicate the occurrence of increased net infiltration at Yucca Mountain during 1989to 1995 and a strong inverse correlation between soil depth (DTN: GS960508312212.007 [DIRS 124829]) and net-infiltration rates (Flint and Flint 1995 [DIRS 100394]). …”

Simulation of net infiltration and potential recharge using a distributed-parameter watershed model of the Death Valley region, Nevada and California

“…For lower elevations (less than 1,500 m) in the Death Valley region, net infiltration occurs only during wetter-than-average winters or in response to surface-water runoff during infrequent, large (high intensity) storms. Studies of streamflow and of water-table elevations (Savard, 1995(Savard, , 1998 provide evidence of deep (more than 10 m) percolation through the unsaturated zone beneath the active channel of the Fortymile Wash, east and northeast of Yucca Mountain, in response to streamflows in 1993 and 1995. Savard (1995Savard ( , 1998 showed that deep percolation coincided with a rising water table beneath the channel.…”

Selected hydrologic data from Fortymile Wash in the Yucca Mountain area, Nevada, water years 1993--94

“…Waddell (1982, Robison (1984), Waddell and others (1984), Robison and others (1988), Gemmel (1990), O'Brien (1991), Luckey and others (1993), Boucher (1994), LaCamera and Westenburg (1994), Hale and Westenburg (1995), O'Brien and others (1995), and Savard (1995) have presented groundwater-level data for wells in the Fortymile Wash and Yucca Mountain area since hydrologic characterization of the potential repository became a national concern. Squires and Young (1984), Pabst and others (1993), and Kane and others (1994) investigated streamflow in Fortymile Wash. Streamflow and precipitation data for the Fortymile Wash area collected during water years 1991-93 are included in a statewide report (Emett and others, 1994).…”

“…Huber (1988) investigated the geomorphic evolution of Fortymile Wash. Osterkamp and others (1994) made ground-water recharge estimates in the Fortymile Wash drainage basin as part of their study of the Amargosa River Basin. Savard (1994) investigated ground-water recharge in Fortymile Canyon.…”