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Rising sea level also threatens bay beaches and tidal flats". [1] "As sea level rises, salt water can mix farther inland or upstream in bays, rivers, and wetlands. Because water on the surface is connected to ground water, salt water can also intrude into aquifers near the coast. Soils may become too salty for farms or forests.
"No Net loss" is the United States government's overall policy goal regarding wetlands preservation. The goal of the policy is to balance wetland loss due to economic development with wetlands reclamation, mitigation, and restorations efforts, so that the total acreage of wetlands in the country does not decrease, but remains constant or increases.
The mitigation sequence is used as a tool to guide the type and level of compensatory mitigation that will be required under the Clean Water Act. [10] It includes the steps avoid, minimise, and compensate, requiring that avoidance and minimisation measures should be exercised before compensation. [ 10 ]
The Chesapeake Bay Program reports that between 2014 and 2022, the Chesapeake Bay watershed gained 4,310 acres of newly created or restored wetlands.
"No net loss" is defined by the International Finance Corporation as "the point at which the project-related impacts on biodiversity are balanced by measures taken to avoid and minimize the project's impacts, to understand on site restoration and finally to offset significant residual impacts, if any, on an appropriate geographic scale (e.g local, landscape-level, national, regional)."
In a 5-4 vote, the Supreme Court limits federal protection for wetlands in a property rights case, saying the Clean Water Act does not usually apply to the marshy areas.
In the United States, compensatory mitigation is a commonly used form of environmental mitigation and, for some projects, it is legally required under the Clean Water Act 1972. Compensatory mitigation is defined by the US Department of Agriculture as "measures to restore, create, enhance, and preserve wetlands to offset unavoidable adverse ...
[93] Wetlands are extremely vulnerable to rising sea levels, since they are within several feet of sea level. The threat posed to wetlands is serious, due to the fact that they are highly productive ecosystems, and they have an enormous impact on the economy of surrounding areas. Wetlands in the U.S. are rapidly disappearing due to an increase ...