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WATER RESOURCES RESEARCH GRANT PROPOSAL

Project ID: 2004NE73B

Title: Investigation of Groundwater Interactions with Surface Hydrologic Systems in River Valleys -- Using Modeling and Field Approaches

Project Type: Research

Focus Categories: Groundwater, Surface Water, Methods

Keywords: Stream-aquifer Interactions, Groundwater Evapotranspiration, Streambed Conductance

Start Date: 03/01/2004

End Date: 02/28/2005

Federal Funds: $9,976

Non-Federal Matching Funds: $38,003

Congressional District: First District

Principal Investigators:
Xun-Hong Chen
University of Nebraska-Lincoln

James Goeke

Robert Caldwell

Abstract

Groundwater is intimately connected to the surface water systems in the river valleys of Nebraska. This study is needed to provide an integrated measure of groundwater and surface water systems and integrated models of the system.

Groundwater wells will be installed in the Platte River valley, Nebraska, where the depth to the water level is relatively shallow. These wells will be constructed in the areas near the U. S. Geological Survey’s stream gauging stations and in the areas where the weather stations of the High Plains Regional Climate Center, headquartered at the University of Nebraska-Lincoln, already exist. The stream gauging stations collect streamflow and stream stage data. These real-time data are available from the USGS web site. The High Plains Regional Climate Center collects hourly data on air temperature, relative humidity, solar radiation, wind speed, wind direction, precipitation, rainfall, and soil temperature. The observation wells will collect hourly groundwater levels that may reflect the responses of groundwater to the changes in stream stage, precipitation, and evapotranspiration. The integrated observation of groundwater, stream and atmospheric conditions provides basic data for the analysis of the interactions between groundwater and surface water systems.

Development of a cross-sectional numerical model is another task of this research. This model will include a groundwater flow model, a model for simulation of soil moisture movement in the vadose zone, and a crop model. This integrated model will simulate the interactions of groundwater with surface water systems. An inverse method will also be developed to determine the rate of groundwater evapotranspiration, as well as the streambed conductance of the Platte River, using the observed groundwater, stream and atmospheric data.

Progress/Completion Report PDF


U.S. Department of the Interior, U.S. Geological Survey
URL: http://water.usgs.gov/wrri/04grants/2004NE73B.html
Maintained by: John Schefter
Last Updated: Wednesday July 13, 2005 3:38 PM
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