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. STREAMFLOW Streamflow for the Colorado River, Green River and San Juan River stations for May 2003 are shown in Table 2. Data presented in the following table was obtained from the monthly report of streamflow and reservoir contents in the Upper Colorado River Basin, as provided by the US Geological Survey Water Resources Division, Utah District. A comparison of monthly streamflow to average monthly stream flow during an 86 year period from 1914 to 1999 is presented for each following Table 2. T~hlp ? - Strp~mf1ow for thp rolor~no Rivpr, Grppn Rivpr ~nn S~n TII~n Rivpr, M~y 1001 CUMULATIVE % OF 86 YEAR % OF 86 YEAR MONTHLY (1914-1999) MAY (1914-1999) OCT02-MA Y03 CUMULATIVE DISCHARGE MAY DISCHARGE DISCHARGE (1000 a.f.) DISCHARGE (1000 A.F.) OCT02-MA Y03 Colorado River near Cisco, Ut 552 1549.3 Adjusted (a) 644 55% 1685.1 57% Green River at Green River, Ut 597 1464.7 Adjusted (b) 559 59% 1332.7 54% San Juan River near Bluff, Ut 79 355.0 Adjusted (c) 167 52% 425.7 42% Total 1,228 Adjusted Total 1,370 56% Colorado River at Lees Ferry (d) 662 Adjusted for change in storage in Blue Mesa Reservoir. Storage began in Blue Mesa Reservoir on October 27, 1965 (a) Adjusted for change in storage in Flaming Gorge and Fontenelle Reservoirs. Storage began in Flaming Gorge Reservoir on December 1, 1962 and Fontenelle Reservoir in October of 1964. (b) Adjusted for change in storage in Navajo Reservioir. Storage began on June 27,1962. Not adjusted for San Juan- Chama diversions (c) Including the Paria River Discharge. Colorado River near Cisco, Utah 1400 q 1200 I g 1000 I ~ 800 I ~ 600 I ~ 400 I ~ en 20~ I IIi: : 1 :=:: j~~~ ~~~ ~;~ .;.: 1 ~~~ :~: ~:. :~: ~~~ ~~~ ~~ .:.: fjl :-:. ::~ ili~ ~1~~ :::: :::: ;~~~ ~~~ ~~~ :::: Oct Nov Dee Jan Feb Mar Apr May Jun Jul Aug Sep [MKl B6-year monthly average l/==\j 2002-2003 adjusted flow 2