In regions characterized by water scarcity, such as coastal Southern California, groundwater containing chromophoric dissolved organic matter is a viable source of water supply. In the coastal aquifer of Orange County in California, seawater intrusion driven by coastal groundwater pumping increased the concentration of bromide in extracted groundwater from 0.4 mg l⁻¹ in 2000 to over 0.8 mg l⁻¹ ...

The Algarve region, in Portugal, is strongly affected by the intense exploitation of its groundwater resources. The fact it is a coastal area implies that the management of these resources is of enormous complexity. Thus, there is a need to create capable tools for the evaluation of the risks and uncertainty associated to this case, so that risk maps can be made, and be used in the decision-mak...

Coastal regions are witnessing unsustainable aquifer overdrafts, leading to subsidence and increased flooding. Flooding introduces its own assortment of problems because managing substantial volumes stormwater is often infeasible through surface storage in low-gradient areas. Aquifer recharge operations, such as recovery (ASR), conjunction with small-scale reservoirs, has the potential suppleme...

The Tamarack State Wildlife Area in eastern Colorado is being investigated as a possible managed recharge project to redirect flows in the South Platte River for water quantity management. Two primary surface water/groundwater interactions exist at Tamarack: (1) between the South Platte River and alluvial aquifer and (2) between backwater sloughs, or secondary river channels, and the alluvial a...

Coastal aquifers are strategic and fundamental in the development of touristic areas. The coastal aquifer within Manglaralto River Basin Ecuador is essential, as it only source water supply for a large part northern Santa Elena province. It semi-arid region where high volumes pumped from aquifer, causing significant drawdown groundwater levels, thus affecting quality. This work aims to characte...

In this study, after simulating 5 years of saltwater intrusion with SEAWAT package in Astaneh–Kouchesfahan coastal aquifer, Iran, 19 strategies, including managerial, structural, and combined were investigated to reduce the intrusion. Since managerial solutions cause users’ dissatisfaction structural increase costs, two-player game theory was used identify most appropriate solution. According r...

We optimize groundwater management in the presence of marine consequences of submarine groundwater discharge (SGD). Concern for marine biota increases the optimal steady-state head level of the aquifer. The model is discussed in general terms for any coastal groundwater resource where SGD has a positive impact on valuable near-shore resources. Our application focuses of the Kona Coast of Hawai’...

Four topics were studied concerning the modeling of ground-water flow in coastal aquifers with analytic elements: (1) practical experience was obtained by constructing a ground-water model of the shallow aquifers below the Delmarva Peninsula USA using the commercial program MVAEM; (2) a significant increase in performance was obtained by implementing the theory for variable density flow in a co...

Differences in the impact of irrigation with freshwater versus wastewater on the underlying shallow groundwater quality were investigated in the Coastal Aquifer of Israel. Seven research boreholes were drilled to the top-most 3–5 m of the saturated zone (the water table region-WTR) in the agricultural fields. The unsaturated zone and the WTR below the irrigated fields consist mainly of clayey s...