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- 3 - . Denver Water reported that there are proposed changes to the Downstream Group's reservoir release schedules. The discussion was if the strategic releases would justify the 65%-35% cost share for an environmental restoration study. The term "Significant Benefits" is important to justify the 65%-35% cost share for environmental restoration. . Denver Water believes strategic releases could be mitigation for depletions to the South Platte River that all users will need. There are benefits if releases are made when the flow is low, but the storage pool dictates that this will only happen some of the time in some years. . The Corps views environmental restoration as credit towards the Water Users payments and it would not be a cash transaction. Recreation Imoacts Phase II Study (Paul Flack) . This Study is half modeling and half recreation impacts. The first half took the inflow/outflow numbers and ran through our model. The assumptions made in this modeling are critical to the determination of recreation impacts. The State Parks and Corps HEC 5 Models will sync up and be the same. The primary reason for having modeling from the Parks perspective is to get at the daily reservoir fluctuation. . The Group needs to gain consensus on evaporation data. Parks has looked at three or four methods to calculate evaporation. If Water Users have thoughts about evaporation or gage data they should contact Paul Flack. Denver Water operates under calculations made by the Sate Engineer's Office. . The Phase I Study from 2003 was to raise Parks facilities up and above 5444 to accommodate the 20,600 AF and found that this was feasible. The Parks modeling is now about reservoir fluctuation and the timing and frequency of the fill and not-fill periods. Mitigation will be based on this. . State Parks has initiated discussions with the Division of Wildlife and stated that Audubon Society and others can be involved also if they are interested. For the Corps purposes, the 16 Water Users were treated as one pool. For Parks' purposes the 16 Water Users need to be shown separately so that an individual user in the group can be shown in the modeling if needed. . The questions was asked: "Why wouldn't you use Denver Water evaporation data?" This is set by the State Engineers and Paul Flack and Tom Browning will investigate and report back to the group. Next Meetin2: Date . The next overall project meeting will be January 11 th Wednesday 10-12 pm at the Tetra Tech/FW offices, 143 Union Boulevard, Suite 1010, Lakewood, CO 80228-1824. . Directions: Take 6th Avenue westbound to the Simms/Union Exit and then head south (left). Tetra Tech is on the West side (right side) of Union Blvd. Tetra Tech is on the loth floor of the building that says "One Union Square". There is also a Wells Fargo logo on this building. ;. \ \ \~ 0/':#/ ~. ~ '0 i= l QIi( I" iijl ~I (I). .. /111 PO> ~\W-fS:/~'ft~/ -'r;,"~(l'f, -p -:..Jsz ':!1 ~...)(I> '::',' JL~ t6t~ t" _.bfb/--':"':"""';' r & ....--~to ,- 0). - 15 D: ~~~ .~<2' -) ~...R~'''-W.&thA,," &; Ef1}- n l' ~-,y-:t:!~ ~-- 3)iiii ~..?~) -n I ~ '4)\ (\-~. < ~ Y'" ~ ,":::~.:~ o \~, 10 '0 ~ / I.~~ ''% 1~"1$ ,s ~. dD ~;""iS~ - ~ * ';:: ~~. W 2-,", -./-, ~ ...<<':- $ .2nd ~I (~~7 ~ - ,;"/ ~'~/ Union ~,'f'/ W:J' 1 st Dr ~ .,' Sq....." ...e ,,,/ \/" r G/" l,,1';; CI> .... /Q) Q,.../ P",-k ---.... ''!-/ be! ,(J) -< rfi'. - ~ I~ ,~/:2-. rl ''-~~jn A~'!_ "" "'..'~ I S.'.'I'" Lfl <0'-' 00- ~~- '< ~.~'i'-W a~y"ud All" l:: "". . -r---------..U> 2. "fl . IS;: 0 ((\1 .., _ , _ i _ ~ e, :~ ~l Flood Protection . Water Project Planning and Finance. Stream and Lake Protection Water Supply Protection. Conservation Planning