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Last modified
1/25/2010 7:14:53 PM
Creation date
10/5/2006 3:43:32 AM
Metadata
Fields
Template:
Floodplain Documents
County
Ouray
Community
Ouray
Stream Name
Uncompahgre River
Basin
Gunnison
Title
Draft Environmental Assessment Ridgway Dam and Reservoir Water Control Manual
Date
4/1/1996
Prepared For
State of Colorado
Prepared By
US Army Corps of Engineers
Floodplain - Doc Type
Project
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<br />. <br /> <br />For example, under without-project conditions, more water would be held in <br />May (when the snowmelt season begins) and June, and would be released at a monthly <br />average of 259 cfs and 368 cfs, respectively. Average monthly flows in July and <br />August increase to 497 cfs and 405 cfs. The difference between May through August <br />flows is not significant in comparison to with-project conditions (Figure 2). In <br />comparison, under with-project conditions the average monthly flows are 309 cfs in <br />May, 418 cfs in June, 447 cfs in July, and 355 in August. The effects of these <br />differences in flows on the environment are discussed in Section 5,0, Environmental <br />Effects , <br /> <br />. <br /> <br />. <br /> <br />In the environmental effects portion of each section, an analysis of the effects <br />that might occur is included under both the no-action and the adopt-the-water control <br />manual alternatives, The no-action alternative relates effects caused when the USBR <br />uses an unapproved preliminary water control plan for flood control, while the <br />proposed alternative relates to effects caused when an approved water control plan for <br />flood control operations is used. <br /> <br />. <br /> <br />. <br /> <br />Figure 2. <br /> <br />Average Daily Streamflows <br /> <br />. <br /> <br />Below Ridgway Dam <br /> <br />soo <br /> <br />~ .. <br />/ ".. <br /> <br />400 <br /> <br /> <br />/ <br /> <br /> <br />. <br /> <br />~ <br /> <br />300 <br /> <br />(cfs) <br /> <br />. <br /> <br />200 <br /> <br />100 <br /> <br />. <br /> <br />Logeod <br />wrmnomcr <br />wmrour PROJECT <br /> <br />o <br />April <br /> <br />May <br /> <br />June <br /> <br />lo1y <br /> <br />Aupt <br /> <br />s.p....bu <br /> <br />. <br /> <br />8 <br /> <br />. <br />
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