Show Flaming Gorge to Raise 12 Feet by Early Eary July Above average precipitation in the Colorado RI River ver Basin above Lees Ferry Feny during April has raised the forecast of July April runoff to 73 million feet acre or 86 percent of nor nor- normal mal the Bureau of R clama tion announced today This fore cast is based on the seasonal accumulation of precipitation to May 1 at 58 stations and May 1 snow data at 48 snow courses within the watershed area and presumes normal precipitation from now through July I ITHE THE BUREAU of f Reclamation tion reported that acre I feet of the anticipated 73 mil lion feet acre was received during April The May 1 forecast of 73 I million feet acre is up about 6 per cent from the 69 predicted a month ago but is 12 below the time long average of 85 ma for the runoff period IF THE amount forecast is realized Lake Powell above Glen Canyon Dam will rise to about elevation feet above mean sea level by summer mid The lake should remain near this level during the remainder er of the year and into winter About 11 million feet acre of runoff should originate above Flaming Gorge Dam Of this amount over feet acre will be stored in He lle- lle senoir The remainder will flow into Flaming Gorge Lake raising its level le from feet above at present to early in July This small rise and subsequent slow descent will assure a stable lake for recreation purposes this sum sum- summer mer The lake behind Fontenelle Dam on the Upper Green River in Wyoming is now at eleva eleva- elevation tion feet above ms and andis andis is rising slowly toward a fore fore- forecast cast elevation of feet by bythe bythe the end of the summer Fontenelle's Fon- Fon Fontenelle's kw A generator has ben installed and testing is expected to begin about May 13 prior to line on-line operation Lake Mead on May 1 was at elevation 1134 feet above or about 2111 feet higher than n a year ago The reservoir is now 87 feet below the top of the raised spillway gates at Hoo er Dam The lake will rise about 1 foot in May and an an- an another other foot in June reaching ale ele 1136 feet above It will remain at this elevation through August The lake at present contains million feet acre of available storage or 57 per cent of its capacity |