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'-- -.--- - U IJ 1 -/ -~,i . . ~U2JfqJijf(frJ) ,i( J4N T Jf!~ '---- ~6/O'8 COI v-1 CO~f8!~~IT':'!Jo ._../I;j...." WAl'~ . .Lt..' ~ ',IT '-:] '!Y.) in the and for the WATER SUPPLY. OUTLOOK FOR UTPJI as of January 1, 1984 NORTliERN UTA..'J:: The water supply forecasts for northern Utah are generally 140 to 250% range. Forecast runoff for the Six Creeks near Salt Lake City streams flowing into Utah Lake are close to those flows experienced d~~ng fload.s of 1983. Record amaunts of predpi taoion invaded northern Utah during ohe fall, Numerous stations reported record amounts for November as well as December and a number of stations showed December as the wettest month on record, S~lt Lake City Airport collected a record amount for December with 4,37 inches, Ogden Pioneer Power House reported the wettest month on record in December with 8.90 inches, and 5artholomew Power House reported the wettest November on record with 5.89 inches followed by 11.90 i~ches in December which was over 2.50 inches more ohan the previous wettes~ ~n~h on recora. This pattern wa3 common ~~th the enti~e north- ern portion of the state receiving this record shatteriI'..g influx of moisture. Seasonal precipitation over northern Utah was also extremely high with Salt Lake City Airport receiving 8.22 inches, 206% of no~l, ~~d 3artholamew Power House 19.86 inches, 274%, Observed streamflows throughout northern Utah also continue to run well above normal wioh little relief in sight, Seasonal (October through December) runoff amounts ranged from 175% of normal en the Weber River at Oakley to over 250% fer the inflow to Ut~~ Lake, Reservoir storage throughout northern Utah generally is in the range of 30 to 125 percent of normal of end-oI-month useable contents, Rockport Reservoir reports 123 percent while Echo Reser,oir has only 32 percent af normal, Soil Conservation.Service snow measurements on January 1 indicate record snowpacks. Bear River drainage, 200%; Logan, 238%;. Ogden, 208%; Weber, 207%; and Provo-Utah Lake, 211%. The elevation of the Great Salt Lake on January 1 was 4206.15 feet above mean sea level, 4.50 feet higher than a year ago at this time, The Lake is ~xpected-LO- canti::ue to rise to a level of 4203. tjO to i..209_..0G_fe.8.t,,---.tl1ree t:: fcurJ~e_e_t_highe!' th~_the-p~ak of last year. Utah Lake fall inflow was 375,300 acre-feet 257% of normal, while outflow was 246,100 acre-feet, nine times normal. The January 1 level is 3,36 feet above cempromise and is expected to peak at 5,00 to 6,00 feet above compromise this spring. Flood potential for the spring snowmelt looks threatening to say the least. April- through July forecasos indicate yolwnetric amoUDoS that VQll challenge 1983 flows. Spring weather ccnditions will playa very significant role in how severe the flooding will be. If northern Utah has a cool, ~et spring similar to laso year NOAA-NATIONAL V[EATHER ,-_.. Colorado Basi~ River Forecast Ce~te~, Salt Lake City. Uta~ . '~Gerald WHliams,.Hydrologis'G in Charge - :h~