Scholarly Works, Virginia Water Resources Research Center
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Research articles, presentations, and other scholarship
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Young runoff fractions control streamwater age and solute concentration dynamics
(2017-07-31)We introduce a new representation of coupled solute and water age dynamics at the catchment scale, which shows how the contributions of young runoff waters can be directly referenced to observed water quality patterns. The ... -
Lateral water flux in the unsaturated zone: A mechanism for the formation of spatial soil heterogeneity in a headwater catchment
(2017-09-30)Measurements of soil water potential and water table fluctuations suggest that morphologically distinct soils in a headwater catchment at the Hubbard Brook Experimental Forest in New Hampshire formed as a result of variations ... -
Redistribution of soil metals and organic carbon via lateral flowpaths at the catchment scale in a glaciated upland setting
(2017-12-01)Emerging evidence shows that interactions between soils and subsurface flow paths contribute to spatial variations in stream water chemistry in headwater catchments. However, few have yet attempted to quantify chemical ... -
Seasonality of nitrogen balances in a Mediterranean climate watershed, Oregon, US
(2018-12-19)We constructed a seasonal nitrogen (N) budget for the year 2008 in the Calapooia River Watershed (CRW), an agriculturally dominated tributary of the Willamette River (Oregon, U.S.) under Mediterranean climate. Synthetic ... -
Soil phosphorus fractions vary with harvest intensity and vegetation control at two contrasting Douglas-fir sites in the Pacific northwest
(2019-09-15)Effects of intensive forest management on soil phosphorus (P) are unclear and may impact long-term site productivity. We assessed changes in P availability over 10 years associated with harvest intensity (bole-only vs. ... -
Upper Stroubles Creek Watershed TMDL Implementation Plan Montgomery County, Virginia
(Virginia Tech, 2006-05-24)A Total Maximum Daily Load (TMDL) study was conducted on Stroubles Creek from April 2002 through October 2003 and approved by EPA in January 2004 (Benham et al., 2003). The TMDL specified the maximum sediment load that ... -
Revisiting the Hewlett and Hibbert (1963) Hillslope Drainage Experiment and Modeling Effects of Decadal Pedogenic Processes and Leaky Soil Boundary Conditions
(American Geophysical Union, 2019-10-22)Subsurface flow dominates water movement from hillslopes to streams in most forested headwater catchments. Hewlett and Hibbert (1963, https://doi.org/10.1029/JZ068i004p01081) constructed an idealized hillslope model (0.91 ... -
Comparing Sediment Trap Data With Erosion Models for Evaluation of Forest Haul Road Stream Crossing Approaches
(AMER SOC AGRICULTURAL & BIOLOGICAL ENGINEERS, 2017-01-01)Soil erosion and sediment delivery models have been developed to estimate the inherent complexities of soil erosion, but most models are not specifically modified for forest operation applications. Three erosion models, ... -
Mineral weathering and podzolization control acid neutralization and streamwater chemistry gradients in upland glaciated catchments, Northeastern United States
(2019-02-26)Headwater streams in the White Mountains, NH, United States have been shown to have downstream gradients of increasing pH and concentrations of base cations coupled with decreasing concentrations of aluminum. A two-stage ... -
Stream Runoff and Nitrate Recovery Times After Forest Disturbance in the USA and Japan
(American Geophysical Union, 2018-09-01)To understand mechanisms of long-term hydrological and biogeochemical recovery after forest disturbance, it is important to evaluate recovery times (i.e., time scales associated with the return to baseline or predisturbance ... -
Time-Varying Storage-Water Age Relationships in a Catchment With a Mediterranean Climate
(American Geophysical Union, 2018-06-01)Recent studies on the relationships between catchment storage and water ages using Travel Time Distributions (TTDs), Residence Time Distributions (RTDs), and StorAge Selection (SAS) functions have led to the hypothesis ... -
Modeling wet headwater stream networks across multiple flow conditions in the Appalachian Highlands
(Wiley, 2018-05-25)Despite the advancement of remote sensing and geospatial technology in recent decades, maps of headwater streams continue to have high uncertainty and fail to adequately characterize temporary streams that expand and ... -
Thermal and Hydrodynamic Changes under a Warmer Climate in a Variably Stratified Hypereutrophic Reservoir
(MDPI, 2018-09-19)We quantified effects of future climate warming on temperature and stability in a variably stratified, hypereutrophic reservoir with large fluctuations in water level by calibrating a 2-D model (CE-QUAL-W2, version 3.7.1, ... -
Integrating Climate Forecasts with the Soil and Water Assessment Tool (SWAT) for High-Resolution Hydrologic Simulations and Forecasts in the Southeastern U.S.
(MDPI, 2018-08-29)This study provides high-resolution modeling of daily water budget components at Hydrologic Unit Code (HUC)-12 resolution for 50 watersheds of the South Atlantic Gulf (SAG) region in the southeastern U.S. (SEUS) by ... -
Headwater stream length dynamics across four physiographic provinces of the Appalachian Highlands
(Wiley, 2017-09-15)Understanding patterns of expansion, contraction, and disconnection of headwater stream length in diverse settings is invaluable for the effective management of water resources as well as for informing research in the ... -
The evolution of root-zone moisture capacities after deforestation: a step towards hydrological predictions under change?
(2016)The core component of many hydrological systems, the moisture storage capacity available to vegetation, is impossible to observe directly at the catchment scale and is typically treated as a calibration parameter or obtained ... -
Network analysis reveals multiscale controls on streamwater chemistry
(Natl Acad Sciences, 2014-05-13) -
Use of color maps and wavelet coherence to discern seasonal and interannual climate influences on streamflow variability in northern catchments
(Amer Geophysical Union, 2013-10-01)The higher midlatitudes of the northern hemisphere are particularly sensitive to change due to the important role the 0 degree C isotherm plays in the phase of precipitation and intermediate storage as snow. An international ... -
Temporal dynamics of catchment transit times from stable isotope data
(Amer Geophysical Union, 2015-06-01)
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