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WSP08787
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Last modified
1/26/2010 2:49:39 PM
Creation date
10/12/2006 3:15:51 AM
Metadata
Fields
Template:
Water Supply Protection
File Number
8240.300.11
Description
San Juan River Recovery Program - Coordination Committee
State
CO
Basin
San Juan/Dolores
Water Division
7
Date
6/1/2001
Title
Low Flow Test San Juan Test Final Environment Assessment
Water Supply Pro - Doc Type
EIS
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<br />'11 <br /> <br />Response: <br /> <br />41. Comment: <br /> <br />Response: <br /> <br />Are these impacts (i.e., stranded and habitat desiccation) going to be <br />evaluated? <br />Although some natural reproduction takes place by rainbow trout. <br />essentially the only trout species in the Quality Waters portion of the <br />fishery, this section of the river is largely supported through the regular <br />stocking offingerling rainbow trout. (The Quality Waters section is <br />identified by the New Mexico Game and Fish Department as the first 4 <br />miles of the fishery downstream from the dam.) Also. the reduction inflow <br />to 250 cfs. while reducing habitat for adult rainbow trout. actually <br />increases available habitat for fingerling trout; therefore. impacts to <br />young-of-the-year trout within this section of river would be negligible. <br />There may be some effect to young-of-the-year habitat for brown trout, <br />primarily downstream of Citizen's Ditch. however, entrainment of small <br />fish in ditch diversions has much greater impact to small life stages than <br />would habitat loss within the river. <br /> <br />Reclamation needs to clearly define "significant trout losses" in the EA. <br />In addition, Reclamation should develop specific parameters to protect <br />against "significant trout losses" that if exceeded would require <br />termination of the test. <br />Reclamation does not believe that "significant" trout losses will occur <br />within the Quality Waters section (identified by the New Mexico Game and <br />Fish Department as the first 4 miles downstream from the dam) of the <br />trout fishery. Reclamation is concerned that trout downstream of major <br />diversions may be lost to some degree. The significance of this potential <br />loss is somewhat debatable. While there are "packets" of trout (primarily <br />brown trout) downstream of Citizen's Ditch, public access to anglers is <br />extremely limited. Virtually all of the land an both sides of the river is <br />private and permission to access the river for recreational fishing is <br />required. Floatfishing does occur and is pennissible under New Mexico <br />State law as long as the anglers do not leave their boat. Still, compared to <br />fishennan use upstream of Citizen's Ditch, recreational fishing below this <br />diversion is very low. <br /> <br />With only a few exceptions, losses to the trout population below Citizen' s <br />Ditch would not likely result in significant losses in angler days. The <br />trout, in particular brawn trout, are self sustaining due to successful <br />natural reproduction and recruitment. They are; however, not a native <br />species and were introduced for the recreational fisherman to use far their <br />enjoyment. <br /> <br />From an ecological standpoint, losses to this population are not as <br />significant as losses to native fish. although from a recreational fishing <br /> <br />22 <br />
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