A note on saltwater intrusion in coastal aquifers

1990 ◽  
Vol 4 (2) ◽  
pp. 123-134 ◽  
Author(s):  
M. Sherif Mohsen ◽  
Vijay P. Singh ◽  
Abdelwahab M. Amer
Keyword(s):  
Coastal Aquifers ◽  
Saltwater Intrusion

Assessment of Saltwater Intrusion Vulnerability in the Coastal Aquifers in Ninh Thuan, Vietnam

2021 ◽  
pp. 703-712
Author(s):  
Quy Nhan Pham ◽  
Thi Thoang Ta ◽  
Thanh Le Tran ◽  
Thi Thu Pham ◽  
The Chuyen Nguyen
Keyword(s):  
Coastal Aquifers ◽  
Saltwater Intrusion

Twenty five years of operational experience using GW modeling to evaluate sustainable use of coastal aquifers for major water supplies

2015 ◽  
Vol 10 (3) ◽  
pp. 465-473
Author(s):  
B. M. Harley ◽  
M. Gamache ◽  
K. K. Masterson ◽  
R. H. Fitzgerald
Keyword(s):  
Sustainable Development ◽  
Coastal Aquifers ◽  
Saltwater Intrusion ◽  
Large Scale ◽  
Groundwater Resources ◽  
Management Strategies ◽  
Operational Experience ◽  
Aquifer System ◽  
Southeastern Us ◽  
Groundwater Supply

The sustainable development and management of groundwater resources in coastal aquifers is complex and, historically, challenging to accomplish. Groundwater models play an essential role in addressing these complexities and providing the basis for planning future sustainable development. For more than 25 years, the authors have applied three-dimensional groundwater models to manage large scale coastal aquifers. The paper will present case studies demonstrating the application of groundwater models to evaluate conditions in complex coastal environments and to develop sustainable groundwater management strategies. These studies include Long Island, a sole source aquifer system in New York serving nearly 3 million people; aquifers in Southern California where injection barriers are used to prevent saltwater intrusion; and Savannah, Georgia in the southeastern US, where concentrated groundwater pumping has contributed to saltwater intrusion at a nearby resort island, and planning is underway to ensure a sustainable groundwater supply to both local industries and municipalities.

scholarly journals Simulations of freshwater lens recharge and salt/freshwater interfaces using the HYDRUS and SWI2 packages for MODFLOW

2018 ◽  
Vol 66 (2) ◽  
pp. 246-256 ◽  
Author(s):  
Adam Szymkiewicz ◽  
Anna Gumuła-Kawęcka ◽  
Jirka Šimůnek ◽  
Bertrand Leterme ◽  
Sahila Beegum ◽  
...  
Keyword(s):  
Coastal Aquifers ◽  
Saltwater Intrusion ◽  
Potential Evapotranspiration ◽  
Capillary Rise ◽  
Richards Equation ◽  
Weather Data ◽  
Freshwater Lens ◽  
Variable Density Flow ◽  
Soil Hydraulic ◽  
Recharge Rates

AbstractThe paper presents an evaluation of the combined use of the HYDRUS and SWI2 packages for MODFLOW as a potential tool for modeling recharge in coastal aquifers subject to saltwater intrusion. The HYDRUS package for MODFLOW solves numerically the one-dimensional form of the Richards equation describing water flow in variablysaturated media. The code computes groundwater recharge to or capillary rise from the groundwater table while considering weather, vegetation, and soil hydraulic property data. The SWI2 package represents in a simplified way variable-density flow associated with saltwater intrusion in coastal aquifers. Combining these two packages within the MODFLOW framework provides a more accurate description of vadose zone processes in subsurface systems with shallow aquifers, which strongly depend upon infiltration. The two packages were applied to a two-dimensional problem of recharge of a freshwater lens in a sandy peninsula, which is a typical geomorphologic form along the Baltic and the North Sea coasts, among other places. Results highlighted the sensitivity of calculated recharge rates to the temporal resolution of weather data. Using daily values of precipitation and potential evapotranspiration produced average recharge rates more than 20% larger than those obtained with weekly or monthly averaged weather data, leading to different trends in the evolution of freshwater-saltwater interfaces. Root water uptake significantly influenced both the recharge rate and the position of the freshwater-saltwater interface. The results were less sensitive to changes in soil hydraulic parameters, which in our study were found to affect average yearly recharge rates by up to 13%.

Sign in / Sign up

Export Citation Format

Share Document