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WSP12301
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Last modified
1/26/2010 4:14:31 PM
Creation date
10/12/2006 5:30:30 AM
Metadata
Fields
Template:
Water Supply Protection
File Number
8142.600.30 A
Description
Other Studies - Purgatoire River Transit Loss Study
State
CO
Basin
Arkansas
Water Division
2
Date
4/23/1954
Author
Corps of Engineers
Title
Purgatoire-Picket Wire River - Part I
Water Supply Pro - Doc Type
Report/Study
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<br />-- <br /> <br />001013 <br /> <br />. <br /> <br />. <br /> <br />.. <br /> <br />The Cretaceous and Tertiary formations comprise the foothills, which have <br /> <br />steep slopes and narrow valleys. More detailed geologic data are given <br /> <br />ill appendix F. <br /> <br />18. Channel characteristics. - In the headwater reaches upstream <br /> <br />froDl Weston, Colorado, river mile 180, gradients are several hundred feet <br /> <br />per mile. Below thet pobt to the vicinity of Long Canyon, river mile 16h, <br /> <br />slopes are in excess of 50 feet per mile. From Long Canyon to the mouth <br /> <br />of San Francisco Creek, river mile 122, the stream bed decreases in eleva- <br /> <br />tion at rates of between 50 and 20 feet per mile, and the channel capac- <br /> <br />ity is about 15,000 cubic feet per second. River slopes, channel capac- <br /> <br />ities, and other pertinent data are given in table 1. A profile of the <br /> <br />river is shown on plate 2, appendix A. <br /> <br />TABIE 1 <br /> <br />PU!lGATOIRi: RWER <br />RIVER SWPES AND 11INHIlJH CHANNEL CAPACITIES <br /> <br /> Inter- Approximate <br /> mles vening Low-lmter Low-water Approximate <br />Locality above Jl'liles Elevation Slope Channel <br /> Mouth by Feet above Feet Capacity <br /> River MSL per Mile c.f.s. <br />Junction, North & 186 7,400 <br />Middle Forks <br /> 22 55.7 Not estimated <br />'1>iT""..-I- ,~ ~<' T...........,.. 1(,1. /, 17<:: <br />
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