U.S. Department of the Interior Prepared in cooperation with the Scientific Investigations Report 2016-5150 U.S. Geological Survey Bureau of Land Management, National Park Service, U.S. Department of Energy National Nuclear Security Administration Sheet 1 (Interagency Agreement DE–AI52–01NV13944), and Office of Civilian Radioactive Waste Management (Interagency Agreement DE–AI28–02RW12167), U.S. Fish and Wildlife Service, and Nye County, Nevada

650000 115° 117° 550000 116° 600000 118° 450000 500000

San Antonio Mts

Monte Cristo Range Monitor Range

Big Smokey Stone Valley Cabin

Grant Range Valley Railroad 1600 Tonopah Valley Quinn Canyon Range Reveille Range 38° 38° Lincoln County Reveille Valley 4200000 4200000 Esmeralda County 1700 1500

1800

1500 Cactus Penoyer Valley

Goldfield

00 00 16 Flat 16 (Sand Spring Worthington Range Hill Valley)

Nye County 1600

Cactus Range Clayton Valley Stonewall Montezuma Range Flat Kawich Range Timpahute

Range Hiko Range Kawich Fish Lake Valley 1700 1500 Gold Valley North Pahranagat Range 1600 Flat Palmetto Mts 1400 Stonewall 1400 4150000 4150000 1500 Mtn 1600 1500 East Pahranagat Range Pahranagat Range 1300 Magruder Mtn Tikaboo Valley

Belted Range EmigrantValley Groom Range Last Chance Range 1500 Slate Ridge 1200 1300 Eureka Valley 1200 Pahute 1100 Black Mesa 1100 Mtn 1000 Gold Rainier Eleana 1500 Range Mtn Stonewall Mesa 1000 White Mts Pass Desert Range 900 Halfpint Range Shoshone Yucca 800 Grapevine Mts Flat 1300 Timber Mtn 1500 Sarcobatus Mtn

700 4100000

4100000 1700 Flat 37° 37° 1400 Desert 1600 Valley

600 Amargosa Range 1100 Yucca Calico BullfrogHills 500 Hills

Oasis Mtn 900

0 0 40 40 Valley Beatty Bare 1000 1200 200 Mtn Crater 1100 1300 100 Flat Jackass 1400 Flats Flat Frenchman Inyo Mts Saline Valley Cottonwood Mts

Amargosa Desert Spotted Range Skull Mtn 1500

0 Pintwater Ridge Funeral Mts StripedHills Death Indian Specter Range Sheep Range Death Springs Valley 4050000 4050000 Junction Indian Tucki Furnace Creek Amargosa Springs Mtn Flat Valley 900 Owens

Valley Valley

Pahrump Clark County Spring Mts Inyo County Ash Meadows

Panamint Range Stewart Greenwater Valley Pahrump 600 Valley 2000 Valley 1900 1800 Argus Range 1700 Black Mts 1600 Las 4000000 4000000 Vegas Panamint 1500 Valley Valley 500 1400 1300 Range 1200 Las Chicago Vegas Resting Spring 1100 Nopah Range 36° 36° Valley 1000 900

800 Shoshone

Sierra Nevada

800 Slate Range California Tecopa Clark Mountain Range Valley

Mesquite 700 Owlshead 0 400 Valley Indian Mts 300 Wells Searles Kingston Range 3950000 Valley Valley 3950000 600 500 100 Mesquite Quail Mts 400 200 Valjean Mts Kern County 300 Shadow Valley Valley McCullogh Range

Avawatz Mts

Granite Mts Silurian Silurian NEVADA Valley Hills CALIFORNIA

Ivanpah Valley

Ivanpah Shadow Mts Mts San Bernardino County

Esmeralda Co Nye Co NEVADA Area shown EXPLANATION in figure 1 Baker CALIFORNIA 600 Potentiometric-surface contour—Modified from D’Agnese and others, 1998. Lincoln Co In meters, contour interval is variable. Datum is NAVD 88 3900000 3900000 Las Death Valley regional groundwater flow system model boundary Mojave Desert Vegas Clark Co Nevada National Security Site boundary Soda Inyo Co Spring locations—From D’Agnese and others, 1998; Bedinger and Harrill, 2010; U.S. Geological Survey National Water Information System (NWIS) database Mts Water-level data—From Pavelko, 2010; used to modify potentiometric-surface NEVADA CALIFORNIA contours of D’Agnese and others, 1998

Kern Co San Bernardino Co

35° 35° 600000 650000 450000 117° 550000 116° Shaded-relief from Digital Elevation Model 1:250,000-scale 500000 Universal Transverse Mercator projection, Zone 11 0 10 20 30 40 50 Miles North American Datum of 1983 0 10 20 30 40 50 60 70 Kilometers Estimated Potentiometric Surface of the Death Valley Regional Groundwater Flow System, Nevada and California By Michael T. Pavelko 2016