A 3-D Model of Surface Water and Groundwater Interaction in the Central Passaic River Basin, New Jersey.

Author(s):  
Duke Ophori

<p><strong>A 3-D Model of Surface Water and Groundwater Interaction in the Central Passaic River</strong></p><p><strong>Basin, New Jersey</strong>.</p><p> </p><p>Duke U. Ophori</p><p>Department of Earth and Environmental Studies</p><p>Montclair State University</p><p>Upper Montclair</p><p>New Jersey 0743</p><p>Ph: (973) 464 6238, Email: [email protected]</p><p> </p><p><strong>Abstract</strong></p><p> </p><p>Hydrogeologists have believed, over the years, that the development of a groundwater basin results in increase in the basin’s groundwater recharge and decrease in discharge. This basin’s response to development is intricately tied with the natural recharge-discharge behavior of regional groundwater flow systems. A 3-D regional groundwater flow model is developed for the Central Passaic River Basin, New Jersey to evaluate its surface water-groundwater interactions. The models show that groundwater pumping increases recharge and decreases discharge in the basin. Groundwater-fed wetlands are reduced in size by groundwater pumping. These findings will enhance groundwater management in the basin.</p>

2008 ◽  
Vol 56 (8) ◽  
pp. 1593-1603 ◽  
Author(s):  
Fatoumata Barry ◽  
Duke Ophori ◽  
Jeffrey Hoffman ◽  
Robert Canace

2013 ◽  
Vol 10 (6) ◽  
pp. 7783-7807 ◽  
Author(s):  
R. Zeng ◽  
X. Cai

Abstract. Groundwater-fed irrigation has altered surface and groundwater interactions, calling for conjunctive management of surface water and groundwater resources in many areas, including the Republican River Basin (RRB) in Midwest of the US, where agriculture heavily depends on irrigation. The decreasing flow trend recorded at the RRB gauging stations since 1950s reflects the synthetical effect of dynamic interactions between surface water and groundwater systems, which has been enhanced by groundwater pumping and irrigation return flow. This study uses a systematic modeling approach to analyze the conjunctive effects of pumping and return flow on streamflow. A watershed management model, Soil and Water Assessment Tool (SWAT), is modified and established for the Frenchman Creek Basin (FCB), a sub-basin of RRB, to examine the causes of streamflow changes. The baseflow component in SWAT is linked to aquifer storage so that the model can simulate the combined effect of groundwater pumping and irrigation return flow on natural streamflow. Results show that irrigation has not only depleted streamflow but also changed the flow pattern and seasonal variability. The changes can be decomposed into decrease in the slow component (baseflow) and increase in the fast components (surface and subsurface flow). Since the fast components are subject to higher variability than the slow component, the annual streamflow variability is amplified. Agricultural water use in this region also has changed the groundwater storage seasonal regime from the pattern of "summer-recharge and winter-discharge" in the past to "summer-discharge and winter-recharge" at present. This challenges the existing groundwater modelling which usually assumes fixed recharge pattern and rates.


Sign in / Sign up

Export Citation Format

Share Document