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", 2-C PACIFIC SOUTHWEST ~-AGENCY COMlu'l'l'.l!OJj; Com'INED AQ.UIFER--An aquifer which is surrounded by formations of less permeable or impermeable material. CONJUNCTIVE USE (GROUNIMATER)--The integrated use of surface and subsurface water supplies, normalJ.y involving storage Of surplus waters during wet periods for use during dry periods. CONSERVATION STORAQE--Water impounded for ,later release for consumptive uses, such as municipal, industrial, and irrigation. CONSTANT DOLLA.RS--The real value of the dOllar, with price of goods and services remainiI1& constant; usuaJ.J.:Y expressed over a period of time from a base year (equal to 100). The effect of using constant dollar is to remove changes in value of the dollar due to either inflation or deflation. CONSUMPrIVE USE (WATER)--The use of water by discharge into the atmosphere or 'incorporation into the product of the process in connection with vegetative growth, food processing, or an industrial process. CQNTAMINATION--A general term signifying the introduction into water Of microorganisms, chemicals, wastes, or sewage, which may render the water unfit for its intended use. COl'lVEYANCE LOSS--The loss of water frail a conduit due to leakage, seepage, evaporation, or evapotranspiration. COST ALLOCATION--The process of distri'\1Uting pr<>ject costs equitably among the various purposes served by the project. COST SHARING--The contribution, by those benefiting from a project or program, towards the cost Of that project or program. CRr.J!ICAL HYDRO PERIOD--Period when the limitations of hydroelectric power supply due to water conditions are Illost critical with resPect to system loe.d requirements. csm (Abbreviation for cubic-feet per second per square 1ll11e. )--The average flow in cubic-feet per second from each square 1ll11e of drainage area. I'll; use allows direct canparison of runoff rates fram basins of differing areas. CURRENT NORMALIZED CROP YJELD--Yield eilt:lJnates which reflect current production technology and practicesfram which abnormalities caused by weather and other hazards have been elilllinated. CURRENT NORMALIZED PRICES--See NORMALIZED CURRENT PRICES.