OCR Text |
Show Colorado River Runoff Well Above Normal The outlook for the coming spring runoff is good to excellent ex-cellent over the entire Upper Up-per Colorado River Basin since April 1 snowpack measurements mea-surements indicate well above ab-ove average water storage in the mountain snowpack, the Bureau of Reclamation announced Wednesday. The probable April through July runoff from the Basin above Lees Ferry should be about 1C6 per cent of normal or 9.0 million acre-feet. This forecast fore-cast is based on the seasonal season-al accumulation of precipitation precipi-tation to April 1 at 58 stations sta-tions and April 1 snow measurements mea-surements at 48 mountainous mountain-ous snow courses within tho watershed. If the amount fore-cast is realized, Lake Powell behind be-hind Glen Canyon Dam will rise to about elevation 3jS ft't above mean sea level, with 10.9 million acre-feet of active storage, by midsummer mid-summer which is 42 fct t above the present lake Uvi 1 and 36 feet above the all - time high reached in August of 1963. The planned releases from Lake Powell for water ' year 1969 will be about 8.8 million acre-feet. For the next three years thereafter, annual releases should b:-near b:-near this amount in order '.o fulfill the Colorado River Compact requirements of delivery of 75 million acre-feet acre-feet to the Lower Basin in the 1963-1972 decade. The entire en-tire release will bo used I generate power for power customers in both the I'np'T and Lower Basins. About 1.2 m a f of ru:i.f should originate above Flaming Flam-ing Gorge Dam, or lu3 per cent of normal Of this amount, am-ount, about 2o0.0j0 acre-feel will be stored in Fontem-IK' Reservoir. The remainder will flow into Flaming Gorgj Reservoir, raising its lev 1 from 5974 feet above S' 3 k--. vel at present to 5939 during July. This rise a::d subsequent subse-quent slow J. scent still assure as-sure a relatively stable lake for recreation purposes this i'ummer. Abou 1 m a.f. of run' ff is x pec ted to occur above Nc-v;ijl Nc-v;ijl Dam on the San Ju .ri K.ver. 9!J0.O acre-feet :,! ovo F .'item lie Dam en -.e. Cr. a It.w, ; ! V7 . i ac re-f. . t above I'.lu- '.'vi D.im t n the (;ji.rs ;:.K.v. r Ti.ese fori -casts are alj ab-c ab-c w r.ormal Sf.owrr.clt runvit". All m.-.j'T res'noirs Wat. -d upstream from I-ike Pew-ell Pew-ell should have a fi.is.r..il r.se in ir water livilt howewr. th- maj-r p-. rt. .) of the 9 m a f. u.U few in: J l-'ike Powv'.l. Lake M-.id on April 1 w.-.s at 1' ;.'.i-:i 11 ! l ( ( t .-,b o .v-a level, or abxit 7 fct hi,:hi r than a year a.:,i 1: c lit.iuis 15 A tn a f. of ..c:;v : stora.te. or i p r cent of rs capacity The r server 1, . 1 was iH feet bi low the tap of the raised sp.llwav g.V.i s at Hoover Dam TV.- lake :s exerted to remain near this level or rise si i .;h : "y through next June. |