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COORDINATED RESERVOIR OPERATIONS (CROS) – <br />Part s of the Upper Colorado <br />Recovery Program and 15 - Mile Reach PBO call for the voluntary bypass of reservoir inf l ows during <br />spring runoff to augment peak flows in the 15 - Mile Reach when conditions are favorable to reach target <br />flows without risk of flooding. Snowpack and reservoir conditions in the Upper Colorado basin were <br />favorable for coordinated spring operations this year. Reservoir operators voluntarily coo rdinated <br />bypasses of surplus inflow to match the timing of the spring peak flows at Cameo. From May 14 to May <br />26, over 41,000 AF of additional water was released from 6 reservoirs to augment the spring peak flows <br />in the 15 - Mile Reach. Due to reservoir a nd snowmelt conditions and concerns about flooding, <br />contributions from some reservoirs were staggered to provide a longer period of augmentation rather than <br />one large peak. Contributions from participating reservoirs were as follows*: <br />Reservoir # Day s Contributed Total AF Contributed <br />Green Mountain (Reclamation) 13 14,140 <br />Ruedi Reservoir (Reclamation) 11 6,070 <br />Windy Gap (NCWCD) 6 2,085 <br />Williams Fork (Denver Water) 9 5,000 <br />Wolford Mountain (CRWCD) 13 13,790 <br />Dillon Reservo ir** (Denver Water) 6 <br />*Note: All amounts are approximate. <br />**Note: Dillon Reservoir outflows must be passed through Green Mountain Reservoir to travel to the 15 - Mile <br />Reach, and are included in the Green Mountain outflows. <br />Flows at the Cameo ga ge ranged from 13,200 cfs to 18,700 cfs during that time, with CROS contributing <br />170 cfs to 2545 cfs. The peaks of 18,700 cfs on May 21 and 18,600 cfs on May 25 included CROS <br />contributions of approximately 2545 cfs and 1780 cfs, respectively. (Michelle Ga rrison) <br />GREEN MOUNTAIN HUP KICKOFF MEETING <br />- <br />The annual June meeting to discuss summer <br />management of the Green Mountain Historic Users Pool was held in Grand Junction on Wednesday, June <br />24. Highlights from the meeting include: <br />Due to above - average spring runoff and June rain events, most reservoirs in the Upper Colorado, with the <br />exception of Granby reservoir, have filled. <br />Pools of water dedicated to augmenting late - summer flows in the 15 - Mile Reach have all filled and will <br />be available this summer. <br />Th e USFWS set the 15 - Mile Reach flow target at the wet - year amount of 1,630 cfs and will adjust down <br />if conditions dry considerably. <br />Regular conference calls will be held through October to coordinate releases of water from various <br />sources in support of th e flow target. (Michelle Garrison) <br />9 <br />CWCB Director’s Report – July 21 - 22, 2009 – Crested Butte, CO <br /> <br />