Nevada Water Science Center

Publications

Publications produced by the Nevada Water Science Center are listed below. Older publications may not be available in electronic form yet. If a Nevada Water Science Center publication that you would like to view isn't listed below, please send email to  GS-W-NVpublic-info@ usgs.gov.

Filter Total Items: 333
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Year Published: 2014

A method for estimating spatially variable seepage and hydrualic conductivity in channels with very mild slopes

Infiltration along ephemeral channels plays an important role in groundwater recharge in arid regions. A model is presented for estimating spatial variability of seepage due to streambed heterogeneity along channels based on measurements of streamflow-front velocities in initially dry channels. The diffusion-wave approximation to the Saint-Venant...

Shanafield, Margaret; Niswonger, Richard G.; Prudic, David E.; Pohll, Greg; Susfalk, Richard; Panday, Sorab
A method for estimating spatially variable seepage and hydrualic conductivity in channels with very mild slopes; 2014; Article; Journal; Hydrological Processes; Shanafield, Margaret; Niswonger, Richard G.; Prudic, David E.; Pohll, Greg; Susfalk, Richard; Panday, Sorab

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Year Published: 2013

Evaporation from Lake Mead, Nevada and Arizona, March 2010 through February 2012

Evaporation from Lake Mead was measured using the eddy-covariance method for the 2-year period starting March 2010 and ending February 2012. When corrected for energy imbalances, annual eddy-covariance evaporation was 2,074 and 1,881 millimeters (81.65 and 74.07 inches), within the range of previous estimates. There was a 9-percent decrease in the...

Moreo, Michael T.; Swancar, Amy
Evaporation from Lake Mead, Nevada and Arizona, March 2010 through February 2012; 2013; SIR; 2013-5229; Moreo, Michael T.;Swancar, Amy

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Year Published: 2013

The distribution and modeling of nitrate transport in the Carson Valley alluvial aquifer, Douglas County, Nevada

Residents of Carson Valley in Douglas County, Nevada, rely on groundwater from an alluvial aquifer for domestic use and agricultural irrigation. Since the 1970s, there has been a rapid increase in population in several parts of the valley that rely on domestic wells for drinking water and septic systems for treatment of household waste. As a...

Naranjo, Ramon C.; Welborn, Toby L.; Rosen, Michael R.
The distribution and modeling of nitrate transport in the Carson Valley alluvial aquifer, Douglas County, Nevada; 2013; SIR; 2013-5136; Naranjo, Ramon C.; Welborn, Toby L.; Rosen, Michael R.

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Year Published: 2013

Using heat as a tracer to estimate spatially distributed mean residence times in the hyporheic zone of a riffle-pool sequence

Biochemical reactions that occur in the hyporheic zone are highly dependent on the time solutes that are in contact with sediments of the riverbed. In this investigation, we developed a 2-D longitudinal flow and solute-transport model to estimate the spatial distribution of mean residence time in the hyporheic zone. The flow model was calibrated...

Naranjo, Ramon C.
Using heat as a tracer to estimate spatially distributed mean residence times in the hyporheic zone of a riffle-pool sequence; 2013; Article; Journal; Water Resources Research; Naranjo, Ramon C.

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Year Published: 2013

Appraising options to reduce shallow groundwater tables and enhance flow conditions over regional scales in an irrigated alluvial aquifer system

Some of the world’s key agricultural production systems face big challenges to both water quantity and quality due to shallow groundwater that results from long-term intensive irrigation, namely waterlogging and salinity, water losses, and environmental problems. This paper focuses on water quantity issues, presenting finite-difference groundwater...

Morway, Eric D.; Gates, Timothy K.; Niswonger, Richard G.
Appraising options to reduce shallow groundwater tables and enhance flow conditions over regional scales in an irrigated alluvial aquifer system; 2013; Article; Journal; Journal of Hydrology; Morway, Eric D.; Gates, Timothy K.; Niswonger, Richard G.

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Year Published: 2013

Modeling variably saturated multispecies reactive groundwater solute transport with MODFLOW-UZF and RT3D

A numerical model was developed that is capable of simulating multispecies reactive solute transport in variably saturated porous media. This model consists of a modified version of the reactive transport model RT3D (Reactive Transport in 3 Dimensions) that is linked to the Unsaturated-Zone Flow (UZF1) package and MODFLOW. Referred to as UZF-RT3D...

Bailey, Ryan T.; Morway, Eric D.; Niswonger, Richard G.; Gates, Timothy K.
Modeling variably saturated multispecies reactive groundwater solute transport with MODFLOW-UZF and RT3D; 2013; Article; Journal; Groundwater; Bailey, Ryan T.; Morway, Eric D.; Niswonger, Richard G.; Gates, Timothy K.

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Year Published: 2013

Properties of basin-fill deposits, a 1971–2000 water budget, and surface-water-groundwater interactions in the upper Humboldt River basin, northeastern Nevada

This study was done in cooperation with Elko County, Nevada in response to concerns over growing demand for water within the county and increasing external demands that are occurring statewide. The upper Humboldt River basin encompasses 4,360 square miles in northeastern Nevada and includes the headwaters area of the Humboldt River. Nearly all of...

Plume, Russell W.; Smith, J. LaRue
Properties of basin-fill deposits, a 1971–2000 water budget, and surface-water-groundwater interactions in the upper Humboldt River basin, northeastern Nevada; 2013; SIR; 2013-5077; Plume, Russell W.; Smith, J. L.

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Year Published: 2013

Lake Mead--clear and vital

“Lake Mead – Clear and Vital” is a 13 minute documentary relating the crucial role of science in maintaining high water quality in Lake Mead. The program was produced coincident with release of the Lakes Mead and Mohave Circular a USGS publication covering past and on-going research in the lakes and tributaries of the Lake Mead National Recreation...

Wessells, Stephen M.; Rosen, Michael
Lake Mead--clear and vital; 2013; GIP; 148; Wessells, Stephen M.; Rosen, Michael

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Year Published: 2013

Detecting drawdowns masked by environmental stresses with water-level models

Detecting and quantifying small drawdown at observation wells distant from the pumping well greatly expands the characterized aquifer volume. However, this detection is often obscured by water level fluctuations such as barometric and tidal effects. A reliable analytical approach for distinguishing drawdown from nonpumping water-level fluctuations...

Garcia, C.A.; Halford, K.J.; Fenelon, J.M.
Detecting drawdowns masked by environmental stresses with water-level models; 2013; Article; Journal; Groundwater; Garcia, C. A.; Halford, K. J.; Fenelon, J. M.

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Year Published: 2013

CRT--Cascade Routing Tool to define and visualize flow paths for grid-based watershed models

The U.S. Geological Survey Cascade Routing Tool (CRT) is a computer application for watershed models that include the coupled Groundwater and Surface-water FLOW model, GSFLOW, and the Precipitation-Runoff Modeling System (PRMS). CRT generates output to define cascading surface and shallow subsurface flow paths for grid-based model domains. CRT...

Henson, Wesley R.; Medina, Rose L.; Mayers, C. Justin; Niswonger, Richard G.; Regan, R.S.
CRT--Cascade Routing Tool to define and visualize flow paths for grid-based watershed models; 2013; TM; 6-D2; Section D: Ground-Water/Surface-Water in Book 6: Modeling Techniques; Henson, Wesley R.; Medina, Rose L.; Mayers, C. Justin; Niswonger, Richard G.; Regan, R. S.

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Year Published: 2013

Modeling variably saturated subsurface solute transport with MODFLOW-UZF and MT3DMS

The MT3DMS groundwater solute transport model was modified to simulate solute transport in the unsaturated zone by incorporating the unsaturated-zone flow (UZF1) package developed for MODFLOW. The modified MT3DMS code uses a volume-averaged approach in which Lagrangian-based UZF1 fluid fluxes and storage changes are mapped onto a fixed grid....

Morway, Eric D.; Niswonger, Richard G.; Langevin, Christian D.; Bailey, Ryan T.; Healy, Richard W.
Modeling variably saturated subsurface solute transport with MODFLOW-UZF and MT3DMS; 2013; Article; Journal; Groundwater; Morway, Eric D.; Niswonger, Richard G.; Langevin, Christian D.; Bailey, Ryan T.; Healy, Richard W.

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Year Published: 2013

Streamflow, groundwater, and water-quality monitoring by USGS Nevada Water Science Center

The U.S. Geological Survey (USGS) has monitored and assessed the quantity and quality of our Nation's streams and aquifers since its inception in 1879. Today, the USGS provides hydrologic information to aid in the evaluation of the availability and suitability of water for public and domestic supply, agriculture, aquatic ecosystems, mining, and...

Gipson, Marsha L.; Schmidt, Kurtiss
Streamflow, groundwater, and water-quality monitoring by USGS Nevada Water Science Center; 2013; FS; 2013-3004; Gipson, Marsha L.; Schmidt, Kurtiss