Lake Capture

In geology, lake capture is the process of capture of the waters collected in a lake by a neighbor river basin.

The occurrence of a lake capture is mainly controlled by the water balance at the lake's basin and the changes in topography due to erosion, sedimentation, and tectonism. If evaporation at the surface of a lake, plus the water losses through underground infiltration and plant evapotranspiration are high enough to account for all precipitation water collected by the lake, then the lake becomes endorheic, closed, or internally drained. This situation remains until the water balance changes again and the lake overburdens the limits of its basin or until the lake capture occurs. Opening the drainage of an endorheic lacustrine basin by fluvial erosion generally implies a lake capture.

Lake captures are therefore very sensitive to the preexisting topography as well as to climatic and lithological factors. A climatic change towards more humid conditions can result in a higher water level in the internally drained basin, eventually causing overflow, this . In a longer time-scale, sediment colmatation of the lacustrine basin can also lead to overflow. Both can hinder the relative importance of the capture process carried out by erosion.

Examples include the Late Neogen capture of the endorheic Ebro Basin (capture) or the Pleistocene Lake Bonneville.

Famous quotes containing the words capture and/or lake:

    This is the hope of many adolescent girls—to capture a parent’s heart with love for them as they are, as people. They reject the notion of being loved just because they are the child of the parent. They want the parent to fall in love with them all over again, because being new, they deserve a new love.
    Terri Apter (20th century)

    They who know of no purer sources of truth, who have traced up its stream no higher, stand, and wisely stand, by the Bible and the Constitution, and drink at it there with reverence and humility; but they who behold where it comes trickling into this lake or that pool, gird up their loins once more, and continue their pilgrimage toward its fountain-head.
    Henry David Thoreau (1817–1862)