IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 35th IAHR Congress - Chengdu (2013) : THEME 4 - HYDRO-ENVIRONMENT : Hydrologic Response of Medium Watershed Using a Fully Coupled Surface-Subsurface Hydrologic Model in...
Hydrologic Response of Medium Watershed Using a Fully Coupled Surface-Subsurface Hydrologic Model in the Arid Region of the Western United States
Author : Kumud Acharya, Mahesh Bhattarai, Li Chen and Yiping Li
Despite being interconnected and a single resource, groundwater and surface water are sometimes perceived and managed as two separate entities. Increased human demand and uncertainties associated with global climate change have made more urgent and necessary to manage as a single resource. This study investigates hydrologic response of a medium sized watershed (~5,000 sq. km) in arid\semi-arid region of the western United States, using a fully integrated surface-subsurface hydrologic model. A fully-integrated, physically-based, distributed numerical model that accounts for three-dimensional variably-saturated subsurface flow and two-dimensional overland\stream flow, HydroGeoSphere was used to simulate the multi-year hydrologic response of the Lower Virgin River Basin (LVRB) in the southwestern United States.Watershed response on the evolution of surface and subsurface flow systems such as recharge-discharge area, loosing and gaining reaches, spatial and temporal distribution of evapotranspiration, and watershed effect on surface runoff were examined over a period of successive years. Despite computing time limitations to performing finer calibrations, simulations were effective in identifying losing and gaining sections of recharge and discharge areas, runoff generation, and spatial and temporal distributions of actual ET.
File Size : 288,991 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 35th IAHR Congress - Chengdu (2013)
Date Published : 18/07/2016
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