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Last modified
1/26/2010 12:13:32 PM
Creation date
10/11/2006 9:37:12 PM
Metadata
Fields
Template:
Water Supply Protection
File Number
8210.470
Description
Pacific Southwest Interagency Committee
State
CO
Basin
Colorado Mainstem
Water Division
5
Date
12/1/1967
Author
Unknown
Title
Report of the Water Management Technical Subcommittee - Glossary of Water Management Terms - December 1967
Water Supply Pro - Doc Type
Report/Study
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<br />001374 <br /> <br />GLOSSARY OF WATER MANAGEMENT TERMS <br /> <br />rAND CAPABILITY ClASSIFICATION--Interpretive grouping of land made pri- <br />marily for agricultUral purposes. In this classification, arable and <br />non-arable soils are grouped according to their potentialities and <br />limitations for sustained production of the commonly cultivated crops <br />or permanent vegetation, and risk to soil damage. <br /> <br />LAND ENHANCEMENT BENEFITS--Those benefits resulting from the improved use <br />of land, made possible by a project. <br /> <br />LAND RESOURCE AREAS--Broad, geographic areas having similar soil, climatic, <br />geologic, vegetative, and topographic features. <br /> <br />lAND SUBSIDENCE--The lowering of the natural land surface in response to: <br />Earth movements; lowering of fluid pressure; removal of underlying <br />supporting material by mining or solution of solids, either artifici- <br />ally or from natural causes; compaction due to wetting (hydrocompaction); <br />oxydation of organic matter in soils; or added load on the land surface. <br /> <br />lAND TREATMENT MEASURE..-A tillage practice, a pattern of tillage or land <br />use, or any land improvement,' with a substantial effect of reducing <br />runoff and sediment production or of improving use of drainage and <br />irrigation facilities. <br /> <br />LEACHING--The removal of soluble constituents from soils or other material <br />by percolating liquid. <br /> <br />LEACHING REQUIREMENT--The portion of applied water (irrigation) entering <br />the soil that must pass through the root zone in order to prevent soil <br />salinity from exceeding a specified value. Incidental leaching <br />resulting frOm rainfall will reduce leaching requirement but it is <br />not considered a part of leaching requirement. <br /> <br />LEFT BANK--The left bank of a stream when the observer is facing <br />downstream. <br /> <br />LITTORAL TRANSPORT--The movement of material along the shore in the <br />littoral zone by waves and currents. <br /> <br />LOAD FACTOR--The ratio of the average load over a designated period to <br />the peakltlad occurring in that period. <br /> <br />LOCAL PROTECTION PROJECT--Projects for protection of specific areas <br />against floods by construction of such works as levees, floodwalls, <br />channel improvements, diversions, floodway,s, bank protection, and <br />drainage facilities, to reduce the frequency of inundations, evacua- <br />tion and resettlement of people and facilities from flood areas to <br />protected areas or areas not subject to flooding; and major drainage. <br />Small reservoirs with only local effects are incl.ud.ed in this <br />category. <br /> <br />l-L <br /> <br />
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