Laserfiche WebLink
<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />2000 RESERVOIR OPERATIONS <br /> <br />Minimum instream flow levels and annual operating strategies have been established at severaJ <br />locations in the Upper Basin which are intended to protect the aquatic resources downstream of <br />specific darns. The regulation of the Colorado River has had both positive and negative effects <br />on aquatic resources. Controlled cool water releases from dams have provided for increased <br />productivity of some aquatic resources and the development of significant introdueed sport <br />fisheries, However, the same releases may be found to be detrimental to endangered and other <br />native species of fishes. <br /> <br />Consultations with the Fish and Wildlife Service in compliance with Section 7 of the Endangered <br />Speeies Aet (Section 7 eonsuItations) on the operation of the Aspinall Unit on the Gunnison <br />River, Navajo Dam on the San Juan River, Flaming Gorge on the Green River, and Glen Canyon <br />Dam will continue in 2000. Studies associated with these consultations will be used to better <br />understand the flow related needs of endangered and other native species of fish. <br /> <br />Modifications to planned operations may be made based on changes in forecast eonditions. <br />However, due to the Recovery Implementation Program for Endangered Fish Species in the <br />Upper Colorado River Basin, Section 7 consultations, and other downstream coneems, <br />modifieation to the monthly operation plans may be based on other factors in addition to changes <br />in streamflow forecasts. Decisions on spring peak releases and downstream habitat target flows <br />may be made midway through the runoff season. Reclamation and the Fish and Wildlife Service <br />will initiate meetings with interested parties, including representatives of the Basin States, to <br />faeiIitate the decisions necessary to finaJize site specific operations plans, All operations will be <br />undertaken subject to the primary water storage and delivery requirements established by "The <br />Law of the River" and other applicable statutes, including water quality control, recreation, <br />enhancement of fish and wildlife, and other environmental factors. <br /> <br />Reclamation completed Seetion 7 consultation with the Fish and Wildlife Service in April 1997 <br />on current and projected discretionary routine lower Colorado River operations and maintenance <br />activities for a period of up to 5 years, Reclamation and the Fish and Wildlife Service have aJso <br />formed a partnership with other FederaJ, State and private agencies to develop the Lower <br />Colorado River Multi-Species Conservation Program. This program permits both non-Federal <br />and FederaJ parties to partieipate under Sections 7 and 10 ofthe Endangered Speeies Act. <br /> <br />The following paragraphs discuss the operation of each of the reservoirs with respect to compact, <br />decree and statutory water delivery obligations, and instream flow needs for maintaining or <br />improving aquatic resources, where appropriate. <br /> <br />FODtenelIe Reservoir <br /> <br />Precipitation and ensuing runoff in the Upper Green River Basin during water year 1999 was <br />above average, The April through July runoff into Fontenelle during water year 1999 was 1,499 <br />MCM (1.215 MAP) or 143 percent ofnormaJ. Inflow peaked at 357 cubic meters per second <br /> <br />December 1, 1999 <br /> <br />7 <br />