aggradev.

1893 R. D. Salisbury in Ann. Rep. State Geologist N.J. 1892 i. vii. 103 The valley bottom would be built up steadily; or, if we may coin a word to designate a process for which a name is needed, the valley bottom would be aggraded.

1919 D. W. Johnson Shore Processes v. 223 Just so long as the current aggrades (builds up) the seabottom offshore, the waves will prograde (build forward) the shore.

1934 Ecology 15 11 Wherever the level of the marsh is aggraded above high tide level, especially by wind-blown sand, a grass-sedge meadow appears.

1954 J. F. Kirkaldy Gen. Princ. Geol. v. 51 If the energy of the river is anywhere insufficient, then it must aggrade by depositing part of its load.

1968 R. W. Fairbridge Encycl. Geomorphol. 130/1 An allied form of morphogenesis rather similarly planes, aggrades and deranges drainage in areas of continental glaciation.

2000 Land & Water Sept. 12/2 Streams generally downcut at the upstream end of a channelization project and aggrade at the downstream end.

1893 R. D. Salisbury in Ann. Rep. State Geologist N.J. 1892 i. vii. 103 (caption) Diagrammatic cross-section of an aggraded valley.

1954 J. F. Kirkaldy Gen. Princ. Geol. v. 52 Aggraded valleys of this type can be recognized by the sharp change of slope at the back of the flood-plain.

2006 Geomorphology 74 72/1 This deforestation accelerated the existing erosion, leaving much evidence of slope failure and aggraded river beds.

1896 Proc. Amer. Acad. Arts & Sci. 1895–6 31 316 We should expect to find inside the long-sweeping curve of the aggrading shore line of the chief bays more or less distinct record of the sharp-curved pocket beaches of an earlier stage.

1960 Jrnl. Asian Stud. 19 393 Aggrading rivers and landlocked drainage areas produce a distinct arid cycle of erosion.

2005 W. H. Doleman in B. J. Vierra Late Archaic across Borderlands v. 117 Streams went from occupying incised channels to meandering across fertile, aggrading floodplains.