A5009079293- Groundwater flow and contamination studies
- Hydrology and Watershed Management Studies
- Reservoir Engineering and Simulation Methods
- Groundwater and Isotope Geochemistry
- Seismic Imaging and Inversion Techniques
- Hydraulic Fracturing and Reservoir Analysis
- Geophysical and Geoelectrical Methods
- Flood Risk Assessment and Management
- Geophysics and Gravity Measurements
- Water resources management and optimization
- Groundwater and Watershed Analysis
- Soil and Unsaturated Flow
- Precipitation Measurement and Analysis
- Simulation Techniques and Applications
- Fluid Dynamics and Vibration Analysis
- Karst Systems and Hydrogeology
- Soil and Water Nutrient Dynamics
- Meteorological Phenomena and Simulations
- Water Quality and Resources Studies
- Water-Energy-Food Nexus Studies
- Atmospheric and Environmental Gas Dynamics
- Geological Modeling and Analysis
- Tailings Management and Properties
- Fish Ecology and Management Studies
- Model Reduction and Neural Networks
United States Geological Survey
2015-2024
California Water Science Center
2015-2024
Technical University of Munich
2023-2024
University of California, Los Angeles
2014-2015
The One-Water Hydrologic Flow Model (MF-OWHM) is a MODFLOW-based integrated hydrologic flow model (IHM) that the most complete version, to date, of MODFLOW family simulators needed for analysis broad range conjunctive-use issues. Conjunctive use combined groundwater and surface water. MF-OWHM allows simulation, analysis, management nearly all components human natural water movement in physically-based supply-and-demand framework. based on Farm Process MODFLOW-2005 (MF-FMP2) with Local Grid...
The Central Valley of California is one the most prolific agricultural regions in world. Agriculture reliant on conjunctive use surface-water and groundwater. lack available land-use changes have led to pumping-induced groundwater-level storage declines, land subsidence, streamflow environment, degradation water quality. As a result, part, Sustainable Groundwater Management Act (SGMA) was developed. An examination components SGMA contextualizing regional model applications within framework...
Reservoir refill operation modeling attempts to maximize a set of benefits while minimizing risks. The and risks can be in opposition each other, such as having enough water for hydropower generation leaving room flood protection. In addition multiple objects, the uncertainty streamflow make decision making difficult. This paper develops stochastic optimization model reservoir with objective maximizing expected synthesized energy production cascade system stations considering risk....
The area surrounding the Salinas Valley groundwater basin in Monterey and San Luis Obispo Counties of California is a highly productive agricultural area, contributes significantly to local economy, provides substantial portion vegetables other commodities Nation. This region about half Nation’s lettuce, celery, broccoli, spinach each year. Thus, this significant volumes products not just for but entire United States. Changes population increased development, which includes shift toward more...
First posted April 7, 2020 For additional information, contact: Director,California Water Science CenterU.S. Geological Survey6000 J Street, Placer HallSacramento, California 95819 The U.S. Survey's (USGS) Modular Ground-Water Flow Model (MODFLOW-2005) is a computer program that simulates groundwater flow by using finite differences. MODFLOW-2005 framework uses modular design allows for the easy development and incorporation of new features called processes packages work with or modify...
Sustainable management of groundwater resources highly relies on the accurate estimation recharge. However, recharge is a challenge, especially in data-scarce regions, as existing models are data-intensive and require extensive parameterization. This study developed process-based hydrologic model combining local remotely sensed data for characterizing data-limited regions using Basin Characterization Model (BCM). was conducted Raya Kobo Valleys, semi-arid region Northern Ethiopia,...
First posted April 7, 2020 For additional information, contact: Director,California Water Science CenterU.S. Geological Survey6000 J Street, Placer HallSacramento, California 95819 Changes in population, agricultural development and practices (including shifts to more water-intensive crops), climate variability are increasing demands on available water resources, particularly groundwater, one of the most productive regions Southwest—the Rincon Mesilla Valley parts Rio Grande Valley, Doña Ana...
First posted May 31, 2018 For additional information, contact: Director,California Water Science CenterU.S. Geological Survey6000 J Street, Placer HallSacramento, California 95819 **September 28, 2018: The purpose of a USGS Open-file report (OFR) is dissemination information that must be released immediately to fill public need or not sufficiently refined warrant publication in one the other series. As part refinement process, an error was discovered input data sets Rio Grande Transboundary...
First posted July 10, 2018 For additional information, contact: Director,California Water Science CenterU.S. Geological Survey6000 J Street, Placer HallSacramento, California 95819 Groundwater has been a part of the city Santa Barbara’s water-supply portfolio since 1800s; however, 1960s, majority city’s water come from local surface water, and remainder groundwater, State Project, recycled increased conservation, as needed, seawater desalination. Although groundwater Barbara Foothill basins...
The authors would like to make the following corrections about published paper [...]
Abstract. The dependency of surface- and groundwater flows aquifer hydraulic properties on deformation induced by changes in head is not accounted for the standard version MODFLOW. A new USGS integrated hydrologic model, MODFLOW-OWHM, incorporates this linking subsidence mesh with transmissivity storage coefficient, that also depend characteristics land-surface geometry. This deformation-dependent approach being used further development Central Valley model (CVHM) California. Preliminary...