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<br />IN> <br />~, <br />Q':): : . <br />co <br /> <br />x Definitions of Terms <br /> <br />centimeter at 25 .C, Specific conductance is <br />related to the type and concentration of ions in <br />water and can be used to estimate salinity or the <br />dissolved solids content of the water, <br /> <br />Streamflow is the discharge of water that <br />occurs in a natural channel. <br /> <br />Suspended sediment is the sediment that at <br />any given time is maintained in suspension by <br />the upward components of turbulent currents or <br />that exists in suspension as a colloid, <br /> <br />Total dissolved solids (TDS) is the total <br />amount of dissolved material, organic and <br />inorganic, contained in water, The actual <br />measure ofTDS may be made using numerous <br />methods: evaporation at 105 .C, evaporation at <br />180 .C, or sum of ionic constituents (less some <br />portion of the bicarbonate fraction), The method <br />currently used, sum of constituents less <br />approximately half of the bicarbonate fraction, is <br /> <br /> <br />considered, by the V,S, Geological Survey to be <br />consistent with measurements made using the <br />180 .C evaporative technique, <br /> <br />Total salt load is the total quantity (mass) of <br />dissolved solids passing a given point during a <br />given time, The load is calculated as a function <br />of concentration and discharge, <br /> <br />Transbasin diversion is the total amount of <br />water diverted out of the Colorado River Basin, <br /> <br />Virgin flow is the historical flow at the point of <br />measurement corrected for the effects of <br />manmade developments in the drainage basin <br />above the point of measurement, <br /> <br />Water year is the 12-month period, October 1 <br />through September 30, The water year is <br />designated by the calendar year in which it ends <br />and which includes 9 of the 12 months, <br /> <br />