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4-06CW229 Supplemental Data
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4-06CW229 Supplemental Data
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Last modified
3/28/2017 10:21:51 AM
Creation date
7/21/2010 3:44:54 PM
Metadata
Fields
Template:
Instream Flow Appropriations
Case Number
06CW0229
Stream Name
South Fork Smith Fork Gunnison river
Watershed
Upper Gunnison
Water Division
4
Water District
40
County
Gunnison
Instream Flow App - Doc Type
Supplemental Data
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STATE OF COLORADO <br />Bill Owens, Governor <br />DEPARTMENT OF NATURAL RESOURCES <br />DIVISION OF WILDLIFE <br />AN EQUAL OPPORTUNITY EMPLOYER <br />Bruce McCloskey, Director <br />6060 Broadway <br />Denver, Colorado 80216 <br />Telephone: (303) 297 -1192 <br />December 16, 2004 <br />Mr. Dan Merriman and Mr. Todd Doherty <br />Colorado Water Conservation Board <br />Stream and Lake Protection Section <br />1313 Sherman Street, Room 723 <br />Denver, Colorado 80203 <br />OF � <br />For Wildlife - <br />For People <br />Re: Colorado Division of Wildlife Instream Flow Recommendations for the South Fork of the Smith <br />Fork of the Gunnison River. <br />Dear Dan and Todd, <br />The purpose of this letter is to officially transmit the Colorado Division of Wildlife's Instream Flow <br />Recommendations for the South Fork of the Smith Fork in Gunnison County. The reach of stream covered <br />by this flow recommendation is from the headwaters of the South Fork to the confluence with the North <br />Fork of the Smith Fork, a distance of approximately 6 miles. This reach of stream is located east of the <br />Town of Crawford. <br />In the fall of 1998, the Colorado Division of Wildlife (CDOW ), with the assistance of staff from the Colorado <br />Water Conservation Board (CWCB), collected stream cross section information, natural environment data, <br />and other data needed to quantify Instream Flow needs for the South Fork of the Smith Fork of the <br />Gunnison River. The South Fork of the Smith Fork is classified as a medium stream (between 20 to 35 feet <br />wide) and fishery surveys indicate the stream environment of the South Fork supports a self- sustaining <br />cutthroat and brown trout fishery. <br />The stream cross section data was analyzed using the R2CROSS program. The R2CROSS output was <br />evaluated using the methods described in Nehring (1979) and Espegren (1996) The CDOW has reviewed <br />the data collected to date and based on that review recommends that the CWCB appropriated the following <br />flow amounts to preserve the natural environment of the Smith Fork of the Gunnison River to a reasonable <br />degree: <br />• 6.4 cubic feet per second is recommended for April 1 through October 15. This flow is required to <br />maintain the three principal hydraulic criteria of average depth, average velocity and percent wetted <br />perimeter; <br />• 4.1 cubic feet per second is recommended for October 16 through March 31. This flow is required <br />to maintain two of the three principal hydraulic criteria of average depth, average velocity and <br />percent wetted perimeter. <br />DEPARTMENT OF NATURAL RESOURCES, Russell George, Executive Director <br />WILDLIFE COMMISSION, Philip James, Chair • Jeffrey Crawford, Vice -Chair • Brad Phelps, Secretary <br />Members, Bernard Black • Tom Burke • Rick Enstrom • Claire 0' Neal • Robert Shoemaker • Ken Torres <br />Ex Officio Members, Russell George and Don Ament <br />
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