Controlling and Managing Saltwater Intrusion One key to controlling saltwater intrusion is to maintain the proper balance between water being pumped from an aquifer and the amount of water recharging it.
Best management practices in areas at high risk of saltwater intrusion: Well drilling: Well siting: Avoid drilling in locations immediately adjacent to the coast e.g. within 50 m. Well depth: Avoid drilling excessively deep within areas proximal to the coast.
As sea levels rise along the coasts, saltwater can move onto the land. Known as saltwater intrusion, this occurs when storm surges or high tides overtop areas low in elevation. It also occurs when saltwater infiltrates freshwater aquifers and raises the groundwater table below the soil surface.
These methods include reduction of pumping rates, relocation of pumping wells, use of physical surface or subsurface barriers, natural or artificial recharge (pressure or positive barriers), pumping of saline water along the seacoast (abstraction or negative barriers), and combination techniques (mixed barriers).
Saltwater intrusion is the movement of saline water into freshwater aquifers, which can lead to contamination of drinking water sources and other consequences. Saltwater intrusion occurs naturally to some degree in most coastal aquifers, owing to the hydraulic connection between groundwater and seawater.
Popular Answers (1)Proportional mixing of good quality water (If available) with saline water.Addition of FYM and compost can reduce the salt effect by producing organic acids on decomposition.Use of salt tolerant variety's (Best option among all)More items...
Seawater intrusion is caused by decreases in groundwater levels or by rises in seawater levels. When you pump out fresh water rapidly, you lower the height of the freshwater in the aquifer forming a cone of depression. The salt water rises 40 feet for every 1 foot of freshwater depression and forms a cone of ascension.
Saltwater intrusion, the technical name for the problem, occurs when too much groundwater is pumped from coastal aquifers, thereby upsetting the subterranean balance between inland freshwater and the relentless ocean. Water moves through the ground as it does in rivers: from high elevation to low.
Saltwater intrusion leads to the loss of freshwater vegetation and the spread of saline mudflats into previously vegetated areas. This can lead to the destruction of crocodile breeding grounds and magpie geese habitat and can impact on the ability of the local Aboriginal people to hunt and gather food.
The new technique for controlling saltwater intrusion is the Abstraction, Desalination and Recharge (ADR) which consists of three (3) steps; abstraction of brackish water from the saltwater, desalination of the abstracted brackish water using treatment process, and recharge of the treated water into the aquifer.
15 Ways to Help Protect the Ocean and Coasts, Regardless of Where You LiveAlways pack your reusable water bottle. ... Ditch single-use cups, straws and utensils. ... Bring that reusable mindset into the grocery store. ... Consider the parts of your environmental impact that you can't see.More items...