This article is about groundwater extraction. For financial uses of the term, see Overdraft.
Within a long period of groundwater depletion in California's Central Valley, short periods of recovery were mostly driven by extreme weather events that typically caused flooding and had negative social, environmental and economic consequences.[1]
Overdrafting is the process of extracting groundwater beyond the equilibrium yield of an aquifer. Groundwater is one of the largest sources of fresh water and is found underground. The primary cause of groundwater depletion is the excessive pumping of groundwater up from underground aquifers. Insufficient recharge can lead to depletion, reducing the usefulness of the aquifer for humans. Depletion can also have impacts on the environment around the aquifer, such as soil compression and land subsidence, local climatic change, soil chemistry changes, and other deterioration of the local environment.
There are two sets of yields: safe yield and sustainable yield. Safe yield is the amount of groundwater that can be withdrawn over a period of time without exceeding the long-term recharge rate or affecting the aquifer integrity.[2][3] Sustainable yield is the amount of water extraction that can be sustained indefinitely without negative hydrological impacts, taking into account both recharge rate and surface water impacts.[4]
There are two types of aquifers: confined and unconfined. In confined aquifers, there is an overbearing layer called an aquitard, which contains impermeable materials through which groundwater cannot be extracted. In unconfined aquifers, there is no aquitard, and groundwater can be freely extracted from the surface. Extracting groundwater from unconfined aquifers is like borrowing the water: it has to be recharged at a proper rate. Recharge can happen through artificial recharge and natural recharge.[5]
^Liu, Pang-Wei; Famiglietti, James S.; Purdy, Adam J.; Adams, Kyra H.; et al. (19 December 2022). "Groundwater depletion in California's Central Valley accelerates during megadrought". Nature Communications. 13 (7825): 7825. Bibcode:2022NatCo..13.7825L. doi:10.1038/s41467-022-35582-x. PMC 9763392. PMID 36535940. (Archive of chart itself)
^"Safe Yield". Water Education Foundation. 22 June 2020. Retrieved 2022-12-19.
The overdrafting leads to the pressure in limestone containments to become unstable and sediments to collapse, creating a sinkhole. Overdrafting in coastal...
apply. By analogy, overdrafting of an aquifer refers to extraction of water faster than it will be replenished. The first overdraft facility was set up...
A daylight overdraft (also called intraday overdraft) occurs where a bank account is allowed to go overdrawn during the day but is brought back into credit...
supply of groundwater is steadily decreasing. Groundwater depletion (or overdrafting) is occurring for example in Asia, South America and North America. Natural...
for many regions, however can present a number of challenges such as overdrafting (extracting groundwater beyond the equilibrium yield of the aquifer)...
depleted by the human population. Such over-use, over-abstraction or overdraft can cause major problems to human users and to the environment. The most...
for exceeding authorised overdraft limits, or making payments (or attempting to make payments) where no authorised overdraft exists. Much of the following...
farming practices Livestock including overgrazing and overdrafting Inappropriate irrigation and overdrafting Urban sprawl and commercial development Vehicle...
of banknotes in 1695. The Royal Bank of Scotland established the first overdraft facility in 1728. By the beginning of the 19th century Lubbock's Bank...
holder and charge only if the holder uses an add-on service such as an overdraft. In Holland in the early 1500s, Amsterdam was a major trading and shipping...
increase the number of total overdraft charges from each of the smaller amounts remaining, as well as charging overdraft fees on a daily basis rather...
some of these problems is depletion of underground aquifers through overdrafting. Soil can be over-irrigated due to poor distribution uniformity or management...
Commercial banks provide loans and advances of various forms, Such as [overdraft] facility, cash credit, bill discounting, money call, etc. They also give...
can overgrazing in stock management, overlogging in forest management, overdrafting in aquifer management, and endangered species in species monitoring....
loss of nutrients in a habitat Oil depletion, decline of oil supply Overdrafting, extracting groundwater beyond the equilibrium yield of an aquifer Ozone...
consumers with inappropriate or illegal overdraft fees. Regions did not obtain affirmative opt-ins from charging overdraft fees on ATM and point of sale transactions...
country's trade deficit or trade surplus. Every country would have an overdraft facility in its bancor account at the International Clearing Union. He...
and US Dollar. President Menocal left the Cuban national treasury in overdraft and therefore in precarious financial situation. Menocal supposedly spent...
partners with Lendingkart to offer overdraft facility for working capital to MSMEs. SBM Bank offers a customised overdraft facility to over 1,00,000 customers...
increase the number of total overdraft charges from each of the smaller amounts remaining, as well as charging overdraft fees on a daily basis rather...
salinity, erosion, desertification, usually as results of drainage, overdrafting (for irrigation), overfertilization, or overexploitation. In history...
direct debits, so payments for bills can be made automatically Provide overdraft agreements for the temporary advancement of the bank's own money to meet...
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