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ARKANSAS BASIN Basinwide Conditions Assessment The SWSI value for the month was 0.6. Flow at the gaging station Arkansas River near Portland was 2169 cfs, as compared to the long-term average of 2286 cfs. Storage in Turquoise, Twin Lakes, Pueblo, and John Martin reservoirs totaled 1130/0 of normal as of the end of June. Outlook Stream flows in June continued strong with a peak the week of June 17th at most mainstem gages, although some gages actually had a higher peak in May. The Arkansas River call began the month set at the Twin Lakes Reservoir 12/15/1896 priority. The river call at the end of June was a split call between Holbrook #1 (9/25/1889) and Amity #2 call (4/1/1893). Administrative/Manaqement Concerns The Southeastern Colorado Water Conservancy District allocated approximately 37,500 acre-feet of Fryingpan Arkansas Project water, which is almost 10,000 acre-feet less than the amount allocated in 2006 due to poorer snowpack conditions in the Fryingpan drainage. Jul-07 ARKANSAS BASIN SV\BI HISTORY 4.0 3.0 2.0 I- W S 1.0 w :3 <( > 0.0 >< w o z - -1.0 >- a:: o -2.0 -3.0 -4.0 Jan-98 Jan-99 Jan-OO Jan-01 Jan-02 Jan-03 Jan-04 Jan-05 Jan-OO Jan-07 I\i1ONTH / YEAR ARKANSAS RIVER NR. PORTLAND, FLOW BY WATER YEAR 1,200,000 ~ 1,000,000 LL ill U <( 800,000 s- o ---l LL W 600,000 > i= <( ---l ~ 400,000 :J U 200,000 Nov Dee Jan Feb March April May June July Aug Sept ---8---- \!\lET (1984) --+- DRY (2002) ---fr- AVG --* 2007 REPRESENTATIVE RESERVOIRS 180,000 160,000 140,000 ill ~ 120,000 Q) U co Q)- 100,000 OJ co a 80,000 Q) ::0 ~ 60,000 :J 40,000 20,000 John Martin Pueblo Turquoise Twin Lakes II A vg. 06/30 Contents II 00/30/07 Contents 4