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WSP01639
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Last modified
1/26/2010 12:32:01 PM
Creation date
10/11/2006 10:35:16 PM
Metadata
Fields
Template:
Water Supply Protection
File Number
8240.200.10.A
Description
UCRBRIP Habitat Restoration
Basin
Colorado Mainstem
Date
10/8/1998
Author
UCRBRIP
Title
Final Habitat Restoration Program FY 1999 Work Plan
Water Supply Pro - Doc Type
Publication
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<br />logging station will be established along the left bank of the diversion <br />structure, where passage is most likely to occur especially during periods of <br />low flows. The remote station will be equipped to detect specific fish <br />movements (either upstream or downstream). Boat based radio tracking will <br />occur in conjunction with the tagging trips. Additional radio-tracking <br />information will be gathered as needed. <br /> <br />Evaluation of fish entrainment in the diversion canal <br /> <br />Task 2a. Larval fish entrainment <br /> <br />To determine if larval fish become entrained in the diversion canal that leads <br />to the power facilities and irrigated fields, we will utilize drift nets in <br />the canal. Once native fish sucker larvae begin drifting (we will utilize <br />other sampling sources to identify this time frame: e.g., basinwide monitoring <br />for razorback sucker), we will set 2-3 drift nets at the entrance of the <br />canal, 2-3 nets within the canal, and 2-3 nets at the exit of the canal for a <br />three week period. [If a drift station is not re-established on the Green <br />River near Swasey's Rapid as proposed for ISMP in 1998, a main channel site <br />(upstream of the diversion) will need to be incorporated into this project]. <br />The nets will be set at 6:00 am and pulled at 8:00 am. This methodology <br />should allow us to determine the species composition and numbers of larval <br />fish entering the canal, becoming entrained in the canal, and exiting the <br />canal. Three weeks of sampling also will be needed while Colorado squawfish <br />larvae are drifting. <br /> <br />Task 2b. Sub-adult and adult entrainment <br />To determine the entrainment of sub-adult/adult sized fish in the irrigation <br />canal, the flow into the canal will need to be reduced or shut off for a short <br />period of time (3-4 hours). Ideally, these activities would be scheduled to <br />coincide with planned irrigation canal operations, but will likely require <br />Recovery Program coordination with the local irrigation company. Optimally <br />sampling would occur a minimum of two times throughout the irrigation season: <br />to coincide with the presence of a) larval razorback and b) Colorado squawfish <br />in the system. A third and final sampling rotation should occur when flows to <br />the irrigation canal are shut off at the end of the season. Once flows are <br />reduced crews will sample three stretches of the upper and lower canals. <br />Sampled stretches will be 100 meters long and spaced equidistantly along the <br />length of the canal. Sampling will consist of visual observations of stranded <br />fish and seining of ponded water areas. All life stages will be targeted. <br />All fish found in the 100m stretch will be measured and weighed. Younger life <br />stages may need to be sub-sampled. <br /> <br />VII. Task Description and Schedule: <br /> <br />FY1999 <br /> <br />Task 1. <br /> <br />Prepare field <br />FY98 season. <br />~iY~ <br /> <br />season summary report for UDWR~ by 11/15/98 for <br />~9~~d;lI',e,.~~IM'F,~,'B~!l1=:9ili~~~~_;:g,~~dip~tc>:r, <br /> <br />sr<h"',lt"""e"''''''e-'17P'''''trra,"-.,.,,,,,,,,,n'''''';!:!''_'''~-''-''''''''''('''!n,~a!>an'4a'Vd <br />a..~iWlr'~~lffi~~"_'~<WKj"i"l.~z.:~zgg.~~~~")~\.-A?iC';a/:-,, <br />.,-..tfg'tf"'lf\V-""""tfcr'"'''m' ~~_"r1\.."_--)h.'''*_''R"",.i_,"",'''''''''n-''-~"'ll;!api.!!:''t <br />1"~w"Vl:~~.~';}",:i',."vw1:;;::~i~~~~~""~'"!!i-;~::~-.w ."-,,1,fK"~ <br />1l.~~"\:i!,r;~1;,*c;J;;+';~,1;'q.gr":\litrGq.q.#':<:l;jmf}1l.Oil:';~~;\i~~~~~~'~~i'"1~,9;g~;:: <br /> <br />Task 2. <br /> <br />Complete larval fish sample identification and enumeration for <br />FY98 field season by 1/99. <br /> <br />Tusher 4 <br />
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