My WebLink
|
Help
|
About
|
Sign Out
Home
Browse
Search
7848
CWCB
>
UCREFRP
>
Public
>
7848
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
7/14/2009 5:02:31 PM
Creation date
5/20/2009 10:10:47 AM
Metadata
Fields
Template:
UCREFRP
UCREFRP Catalog Number
7848
Author
Burdick, B. D.
Title
Minimum Flow Recommendation For Passage Of Colorado Squawfish And Razorback Sucker In The 2.3-Mile Reach Of The Lower Gunnison River
USFW Year
1997.
USFW - Doc Type
Redlands Diversion Dam To The Colorado River Confluence.
Copyright Material
NO
There are no annotations on this page.
Document management portal powered by Laserfiche WebLink 9 © 1998-2015
Laserfiche.
All rights reserved.
/
130
PDF
Print
Pages to print
Enter page numbers and/or page ranges separated by commas. For example, 1,3,5-12.
After downloading, print the document using a PDF reader (e.g. Adobe Reader).
Show annotations
View images
View plain text
Transect No. 14 (Appendix; Figure G.S.) <br />This transect was located at RM 1.8 and extended 286 feet. A maximum water <br />depth of 1 foot and 2 feet is achieved at 100 and 200 cfs, respectively. A mean <br />water depth of 1 foot is maintained at approximately 225 cfs. At 200 cfs, 60% <br />of the channel's water depth exceeded 1 foot. <br />Transect No. 19 (Appendix; Figure G.S.) <br />This transect was located at RM 1.4 and extended 325 feet. A mean water <br />depth of 1 foot would be maintained at 600 cfs. However, 1,400 cfs would be <br />required to maintain a mean water depth of 2 feet. At 300 cfs, the mean and <br />maximum water depth was 0.7 and 1 foot, respectively, and only one predicted <br />observation exceeded 1 foot. Doubling the flow from 300 to 600 cfs would not <br />double the available habitat at this transect either--the mean depth would be <br />increased by 0.3 foot, the maximum by 0.5 foot. This is considered a critically <br />shallow cross section at 300 cfs. <br />Transect No. 26 (Appendix; Figure G.6.) <br />This transect was located at RM 0.8, 0.1 mile upstream of the confluence <br />with the Colorado River and extended 396 feet. There is little change in <br />available habitat at 100, 300, or 600 cfs. At 100 and 300 cfs, the mean and <br />maximum water depth was similar, 2.2 and 4.1 feet, respectively. At 600 cfs, the <br />mean water depth was 2.3 feet; the maximum water depth, 4.2 feet. <br />FWS Transects <br />The following contains a description of the transect placement relative to <br />the stream channel, width of the wetted channel, channel width, habitat, and <br />empirical water depths recorded in the 2.3-mile reach (Figure 7). A total of 818 <br />individual water depth measurements was recorded. <br />Transect No. 4 (Appendix; Figure G.7.) <br />This transect was located at RM 2.9, 0.1 mile downstream of the Redlands <br />Diversion Dam. The width of the wetted channel was only 160 feet, whereas the <br />total channel width was 370 feet. This transect was at a 30° angle to the <br />channel and spanned a primary channel on the east side, an island, and a <br />secondary channel on the east, that was dewatered at the time. The mean and <br />maximum water depth was 0.6 and 1.5 feet, respectively, on 8 August when the flow <br />was 222 cfs; 14% of the wetted channel width exceeded 1 foot (Appendix;•Table <br />G.4.). One defined thalweg was evident at this flow. The habitat type at this <br />transect was classified as a fast run. <br />Transect No. 9 (Appendix; Figure G.B.) <br />This transect was located at RM 2.7, 0.3 mile downstream of the Redlands <br />Diversion Dam. This transect extended approximately 290 feet across the primary <br />channel at a 45-60° angle to the channel. The mean and maximum water depth was <br />0.4 and 0.8 feet, respectively, when the flow was 245 cfs. There was not a <br />23
The URL can be used to link to this page
Your browser does not support the video tag.