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Outline of Wild & Scenic Alternative Mang. Plan
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Outline of Wild & Scenic Alternative Mang. Plan
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Last modified
10/5/2016 2:25:50 PM
Creation date
11/10/2015 4:07:52 PM
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Template:
Water Supply Protection
Description
Related to Upper Colorado River Wild and Scenic Stakeholder Group
State
CO
Basin
Colorado Mainstem
Water Division
5
Date
9/8/2008
Author
Upper Colorado River Wild and Scenic Stakeholder Group
Title
Outline of Wild & Scenic Alternative Mang. Plan
Water Supply Pro - Doc Type
Meeting
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O final tar et flows in an average year(defined pursuant to runoff estimates where the expected <br /> runoff is expected to e o o average or more,but not more than 130%or average,based on a <br /> 10?year running average—Pumphouse to State Bridge. Flows measured at USGS near <br /> Kremmling(cfs): <br /> Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec <br /> Flow 400- 400- 400- 600- 900- 900- 900- 900- 600- 400- 400- 400- <br /> 600 600 600 800 1300 1300 1300 1300 800 600 600 600 <br /> This target flow scenario also includes a target flushing flow 1 out of every 2 years for up to <br /> 1800 cfs. Between October and March,the target flows are a range from 400 cfs to 600 cfs. In <br /> April and September,the target flows at 600-800 and for the May through August the target <br /> flows at 900-1300 cfs. The SG could attempt to work with water rights holders to see if they can <br /> commit to meeting existing water rights holder needs and shape a volume or water that <br /> could be dedicated in average years to the optimal target flows. Thus,if <br /> the SG management committee regulated the flows to allow for a flushing flow in the previous <br /> year,then the SG management committee can elect to reshape the flows in May through August <br /> to allow for more recreational boating flows to be met for a longer period. <br /> Optimal target flows in a wet year(defined pursuant to runoff estimates where the expected <br /> runoff is expected to be more than f25%or average,based on a 10?year running average- <br /> Pumphouse to State Bridge. Flows measured at USGS near Kremmling(cfs): <br /> Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec <br /> Flow 500- 500- 500- 600- 900- 900- 900- 900- 600- 500- 500- 500- <br /> 600 600 600 800 1500 1500 1500 1500 800 600 600 600 <br /> This target flow scenario also includes a target flushing flow 1 out of every 2 years for up to <br /> 1800 cfs. Between October and March,the target flows are a range from 500 cfs to 600 cfs. In <br /> April and September,the target flows at 600-800 and for the May through August the target <br /> flows at 900-1300 cfs. The SG could,(in my opinion)see if they can commit to a certain <br /> volume that would be dedicated in average years to the optimal target flows. Thus,if the <br /> previous year was a dry year,then the SG management committee can elect to reshape the <br /> flows in May through August to allow a Flushing Flow of 1800 cfs or greater for a 3-day w ' <br /> duration during the May to mid-June period. v Nv <br /> F. Implementation of Flow Based Protection Measures <br /> 62/1rnAitA <br /> 1. Mechanisms for permanent protection of the ORVs. &71i LS <br /> a. Delivery of water to a downstream demand or call by senior /l,,(Nh'1Y <br /> downstream water rights. u /„ <br /> i. Normal operation of the river system(e.g.,releases from �a e/0v\ <br /> Wolford Mountain and Green Mountain Reservoirs), Y <br /> plus calls by senior downstream water rights has the (9 at VI <br /> effect of contributing sufficient water through Segments <br /> 4-7 to protect the ORVs. It is anticipated that water <br /> deliveries and senior calls will produce river flows that <br /> meet or exceed the flow targets. <br /> Page 13 of 15 <br />
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