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WSP07886
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Last modified
1/26/2010 2:29:19 PM
Creation date
10/12/2006 2:40:00 AM
Metadata
Fields
Template:
Water Supply Protection
File Number
8282.600.10
Description
Colorado River Operating Annual Reports
Basin
Colorado Mainstem
Date
1/1/1994
Author
USDOI/BOR
Title
Operation of the Colorado River Basin 1994 Projected Operations 1995
Water Supply Pro - Doc Type
Publication
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<br />Water Year 1995 <br /> <br />Both Lakes Mohave and Havasu are scheduled to be drawn <br />down in the faU and winter months to provide storage space <br />for local storm runoff and will be filled in the spring to meet <br />higher summer water needs. This drawdown will also <br />correspond with maintenance al both Davis and Parker <br />Powerplants which is scheduled for October 1994, through <br />March 1995. The normal filling pattern of these two <br />reservoirs coincides weU with the fishery spawning period. <br />Since laIce elevations will be similar to previous years, <br />relatively normal conditions are expected for boating and <br />other recreational uses. <br /> <br />A<<:ompllshmel\ts of the Native Fish Work Group <br /> <br />The Bureau of Reclamation is the lead agency in the Native <br />Fish Work Group (NFWG), a multi-agency team working to <br />replace the existing, aging adult razorback sucker population <br />in Lake Mohave. These fISh average over 40 years of age <br />and recruitment of young appear annuaUy fails due to <br />predation by exotic fishes and other exotic aquatic animals. <br />Projections in 1988 indicated the adult population would die <br />off prior to the turn of the century. <br /> <br />During late winter and early spring of 1994, over 10,000 wild <br />razorback sucker larvae were captured from spawning <br />groUJIds and reared in lake-side backwater ponds. In the fall <br />roughly 2200 of these fIsh were released into Lake Mohave. <br />This brings the total number of young razorback suckers <br />reared in lake-side ponds and released to the lake to 3000. <br /> <br />The NfWG plans to continue the use of lake-side ponds that <br />fill with water during late winter and early spring as the <br />reservoir fills, and dry up in the fall as the reservoir water <br />levels decline. There is sufficient water during the growing <br />season for these fish, and the fall drawdown facilitates fISh <br />harvest and removal. Additionally, the dryout of these areas <br />in late fall removes any non-native fIshes which gain access <br />from weU meaning summer visitors. <br /> <br />ACTUAL STORAGE 1994 <br /> <br />-" - - -IIIL.iJoif"CUiiC 1IiiriM-. -- -- 1MOUSUID ACU.Ur- - - - - . <br />2100 22.. <br /> <br /> ,/' V "- <br /> V ......., i'-., <br />-"" <br /> <br />.100 <br /> <br />"" <br /> <br />..... <br /> <br />,_ <br /> <br />2200 <br /> <br />17U <br /> <br />1000 <br /> <br />1120 <br /> <br />1100 <br /> <br />- <br /> <br />1100 1218 <br />J' ~-4 <!'c, .; ~ ~ I' "" .; ,t' ~ " <br /> <br />18 <br /> <br />MOST PROBABLE RELEASES 1885 <br /> <br />......-......,- <br /> <br />_........UT <br />1114 <br /> <br />1 <br /> <br />'00 <br />100 <br />000 / <br /> \ <br /> "'- ........ / <br />100 1'\ I <br />.00 <br /> <br />"" <br /> <br />110 <br /> <br />... <br /> <br />- <br /> <br />- <br /> <br />",. F <I' -I' ~.;-I' "" ;-,t" ,,'U <br /> <br />MOST PROBABLE REGULATED INFLOW 1995 <br /> <br />....- ....., ........ <br />'100 <br /> <br />_-..r <br />.2M <br /> <br /> v r--... <br /> / i'-.., <br />"- / "- <br /> <br />,- <br /> <br />1114 <br /> <br />1200 <br /> <br />171 <br /> <br />1000 <br />100 <br /> <br />110 <br /> <br />... <br /> <br />- <br /> <br />... <br /> <br />.... <br /> <br />'0' <br /> <br />") ./' , -I' , ~ .f' .; ; ,t' , ~"~ <br /> <br />MOST PROBABLE STORAGE 1885 <br /> <br />. - --- - iillLUoiIc:iiiiic METuti -- "- ntOUiMD .iCa-Rn <br />1100 ... <br /> <br /> I <br /> I <br /> 1 <br /> 1 <br /> ....... <br /> 1 <br /> / -- "'- <br />V 1 <br /> <br />1100 <br /> <br />101 <br /> <br />.- <br /> <br />- <br /> <br />2200 <br /> <br />7U <br /> <br />1- <br /> <br />120 <br /> <br />1100 <br /> <br />... <br /> <br />110;:' F <fS' -I' ~ ~ 1"';- ;- ,t' ~ ,,1_ <br />
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