groundwater aquifers
41Watertable control — is the practice of controlling the water table in agricultural land by subsurface drainage with proper criteria to improve the crop production. Contents 1 Description and definitions 1.1 Purpose 1.2 Optimization 1.3 …
42spring — springlike, adj. /spring/, v., sprang or, often, sprung; sprung; springing; n., adj. v.i. 1. to rise, leap, move, or act suddenly and swiftly, as by a sudden dart or thrust forward or outward, or being suddenly released from a coiled or… …
43Overdrafting — is the process of extracting groundwater beyond the safe yield or equilibrium yield of the aquifer. Since every groundwater basin recharges at a different rate depending upon precipitation, vegetative cover and soil conservation practises, the… …
44Glossary of environmental science — This is a glossary of environmental science.Environmental science is the study of interactions among physical, chemical, and biological components of the environment. Environmental science provides an integrated, quantitative, and… …
45MODFLOW — simulation MODFLOW is the U.S. Geological Survey modular finite difference flow model, which is a computer code that solves the groundwater flow equation. The program is used by hydrogeologists to simulate the flow of groundwater through aquifers …
46Datation des eaux souterraines — Au sein des aquifères, l’âge des eaux souterraines, c est à dire de son temps de transfert de son point d’infiltration vers son exutoire naturel ou non (captage) peut varier du jour au(x) million(s) d’années suivant le contexte géologique et… …
47Ogallala Aquifer — Saturated thickness of the Ogallala Aquifer in 1997 after several decades of intensive withdrawals: The breadth and depth of the aquifer generally decrease from north to south …
48Stygofauna — are any fauna that live within groundwater systems, such as caves and aquifers, or more specifically small, aquatic groundwater invertebrates, though terrestrial air breathing subterranean animals are also sometimes included. Stygofauna can live… …
49Well drainage — means drainage of agricultural lands by wells. Agricultural land is drained by pumped wells (vertical drainage) to improve the soils by controlling water table levels and soil salinity. Contents 1 Introduction 2 Design 3 Flow to wells 4 …
50ZOOMQ3D — is a numerical finite difference model, which simulates groundwater flow in aquifers. The program is used by hydrogeologists to investigate groundwater resources and to make predictions about possible future changes in their quantity and quality …
