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, l I <':,) . ~.'') !'.... c.n . 00 ~ ..eo.. " NORTH roRK DIVERSION !),AM The d proper is a concrete gravity overflow' spillway se(ltion. 90 feet ,long. with crest elevation at 8.370. This spillway is designed for muim1illl disoharge f 1.!300 cubic feet per second. On each side of the overflow sejJtion is a concr e gravity section oontaining three automatio siphon spinways 'on each side. The total spillway capacity is 9.400 cubic feet per second. al estimated cost is $483.928. .., GRANaY PUMPING PLAm 1I.s s ed before, the water surt'a.oe elevation of Grailby Reservoir is B,e75 and the wat r surfaoe of Shadow Mountain and Grand Lakes is 8,369. In orcl,er to get the tel' stored in Granby Reservoir into ShadOW Mountain Lake and avail- able for d ivery through the Continental Divide tunnel, a Pumpill/!; plant ill ,looated on he north shore of Granby Reservoir about one-palf mile above 'the, junotion 0 the South Fork with the Color!l-do. A granite spur juts out into the reservoirs te at that point wing it ideal for the intake tunnels and a shaft ~~~~ " The pr posed pumping plant will contain three motor-driven vertioal-s~ft pumping uni s having a total capaoity of 900 cubic feet per seoond with ruil reservoir a d 550 cubic second-feeta't low water.. At normal water surface the capt.oity wi 1 be 870 oubio feet, per second.. p will be driven by a 6.500"horsepower synchronous motor., P~r 11 be delivered to the plant from a 69.000-volt trallllll1il!sion line extending om power plant no. 1 just below Estes Park, around the Rocll:y ;.:, Mountain Ne. ional Park. and orossing the Continental Divide at Buchanan fas,s about 5 mil s south of the park boundary. . .' The wa er !'rom the pumps empties into a canal of 900 cubic seoonli-feet oapaoity an runs by gl"avity into Shadow Mountain Lake. ,It is planned to operate thi caml all winter when temperatures get as 'low as 40. below zero. The latent eat in the water and the friction heat absor)led fram the pumps will prevent thi water !'rom freezing and will keep quite an area open after the water reach6ll Sha ow Mountain Lake. " , The t al estimated cost of the pumping plant is $11250,000 The t al estimated cost of the pump canal is $417,553. com INENTAL ,DIVIDE TUNNEL j p i J , '. '; , , , " , , ., ,:} :! ., 't -1 , .'" I The we conetructed ohannel a vation at 8 Grand Lake the water t tunnel portal is conneoted with Grand Lake by means of a chalUl61 67 -5 feet in width and 15 feet in depth. At the lake end of this , " nent ooncrete barrier or weir will be plaoed with a crest ele- 68 which would be the minimum elevation to wl1ioh the water in ' ould be drawn. Sinoe the barrier is so construoted that it requir~s be 1 foot in depth over it to supply the normal capacity of the i-.--,- ; ! .- - ,- ~,..." "; ~ ", > ~;. ","'_"-,, ; ;;1- _~_,;.' J..<" l .: j,- ;'~'_ ,ii,;;~;;~i~"; - .