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Show 30 Utah Geological and Mineral Survey Water- Resources Bulletin 21, 1976 Glossary - continued Symbol or value Text Computer program ( table 18) LSPPT M OD Oe Pa Pad Pcf Pm Pmi Q SI SCE SCEN t T TL Description Units H2 Precipitated- salt load Tons in south part Ml Discharge from Acre- feet/ day south to north through causeway M2 Discharge from Acre- feet/ day north to south through causeway 36 Outflow from the diked part Acre- feet Outflow from Acre- feet evaporation Average annual precipitation Inches Adjusted annual precipitation Inches Pan coefficient for freshwater evaporation - Average monthly precipitation Inches F( I) Fraction of mean annual precipitation for month i ( or ( I)) - Discharge Acre- feet/ day Altitude of water surface in south part Feet Effect of salinity on evaporation rate in south part - Effect of salinity on evaporation rate in north part - ( K, I) Time step - Tl Time period ( or increment) Days TXS Total dissolved plus precipitated load Tons Symbol or value Description Text Computer program ( table 18) Units VI) L4 Volume of diked part Acre- feet VN N4 Volume of north part Acre- feet vs S4 Volume of south part, excluding diked part Acre- feet AS Volume change Acre- feet ( AS) o Observed volume change Acre- feet ( AS) m Computed volume change Acre- feet pS Density of brine in south part at any temperature Grams/ millilitre pN Density of brine in north part at any temperature Grams/ millilitre Volume Acre- feet Altitude, Area, and Volume Relationships of the Lake It is necessary to know the altitude, area, and volume relationships of the lake in order to predict changes in the water and salt balance of the north, south, and diked parts of Great Salt Lake. These relationships were developed largely from an advanced copy ( scale 1: 99,000) of a map of Great Salt Lake and vicinity under preparation by the Topographic Division of the U. S. Geological Survey. The advanced map delineates shorelines at 1- ft ( 0.3 m) intervals for altitudes ranging from 4,193 to 4,200 ft ( 1,278.0 to 1,280.2 m). The bay area bottoms lie at altitudes generally, above 4,193 ft ( 1,278.0 m); thus, the altitude- area- volume relationships for the potential diked areas are based almost entirely upon the new map. In the bay areas, it was assumed for purposes of the model that present industries, waterfowl- management and refuge areas, and residential areas at altitudes above 4,205 ft ( 1,281.7 m) would be protected from inundation by either raising existing dikes or construction of new dikes. Thus, the areas for all diking options except number 7 are constant at altitudes above 4,205 ft ( 1,281.7 m). |