Simulation of Regional Ground Water Flow and Salt Water Intrusion in Hernando County, Florida

Abstract

The projected growth of Hernando County, located along the coast of west‐central Florida, has motivated the county and the Southwest Florida Water Management District to assess ground water resources in the area. As part of the Hernando County Water Resources Assessment Project, a computationally efficient modeling approach was developed to simulate regional ground water flow and salt water intrusion in two adjoining ground water basins in which Hernando County is located. In this modeling approach, the regional ground water flow simulation was divided into two stages: fresh water and sharp‐interface simulations. The first stage was performed using a calibrated fresh water model. Following the fresh water simulation, a calibrated sharp‐interface model was used to evaluate the potential extent of migration of the fresh water/salt water interface as a result of implementing ground water management scenarios. Predictive modeling results indicate that projected future ground water withdrawals will cause less than 0.6 m of additional drawdown within Hernando County. Results also suggest that by the year 2050 the fresh water/salt water interface will migrate landward less than 1.6 km from its 1994 position.

Optimal management of saltwater intrusion in the coastal aquifer of Malia, Crete (Greece), using particle swarm optimization

“…According to this approach, the physical system consists of two immiscible fluids of different constant densities (freshwater and saltwater) that form a mixing zone that is limited into an interface with a small finite width (Reilly and Goodman 1985). This approach has been applied and extended by many researchers-such as Dagan and Zeitoun (1998), Brunke and Schelkes (2001), Mantoglou (2003), Mantoglou et al (2004), Guvanasen et al (2000), Ababou and Al-Bitar (2004), Karterakis et al (2007), Koukadaki et al (2007) and Papadopoulou et al (2010a), (2010b) among others. Under transient conditions, the behavior of the interface is controlled by both the freshwater and saltwater dynamics, since significant amounts of saltwater must enter or exit the aquifer following the interface movement (Mantoglou et al 2004).…”

Modeling and control of saltwater intrusion in a coastal aquifer of Andhra Pradesh, India

“…Saltwater intrusion problem has been reported all over the world, e.g., Madras, India (Rouve and Stoessinger, 1980), Nile delta aquifer in Egypt (Sherif et al, 1988), Yun Lin basin in southwestern Taiwan (Willis and Finney, 1988), southwest region of Bangladesh (Nobi and Gupta, 1997), Hernando County, Florida (Guvanasen et al, 2000), Jahe river basin, Shandong province in China (Cheng and Chen, 2001), Savannah Georgia (Kentel et al, 2005).…”

Saltwater intrusion estimation in a karstified coastal system using density-dependent modelling and comparison with the sharp-interface approach

“…According to this methodology, the physical system consists of two completely immiscible fluids with different constant densities (fresh and saline water) that form a mixing zone that is limited to an interface with a small finite width (Reilly and Goodman 1985). This approach has been applied and extended by many researchers such as: Mahesha and Nagaraja (1996), Dagan and Zeitoun (1998), Naji et al (1998), Guvanasen et al (2000), Brunke and Schelkes (2001), Mantoglou (2003), Mantoglou et al (2004), Ababou and Al-Bitar (2004), Karterakis et al (2007), Koukadaki et al (2007), Papadopoulou et al (2010a) and Papadopoulou et al (2010b). The interested reader is directed to Reilly and Goodman (1985) and Diersch and Kolditz (2002) for an extensive review of works utilizing the sharpinterface approach.…”