BOARD01564

• Board Meeting Date: 3/29/1999
• Description: Colorado River Basin Issues - Glen Canyon Adaptive Management Program - Status Report
• Board Meetings - Doc Type: Memo

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PROGRSSS ELEMENT 4
Some evaluation of the tributaries to determine suitability have been undertaken by the Service,
funded by Reclamation. Havasu Creek was identi1ied as the location with the greatestlikelihocd
of success. The Supai tribe has indica1ed they are not amenable to having endangered fish in
this area. Considering the preferred location of a second spawning population of humpback chub
is in the mainstream Colorado River, and that establishment is largely dependent upon warmer
water temperatures, success is likely dependant on the temperature control device currently
under consideration, and/or implementation of low steady summer flows. Therefore, the
available staff and funding resources have been applied to those other items, which are expected
to produce tangible benefits (or endaneered specio3 much more quickly.

STATUS OF ELEMENT 4
ONGOING. Efforts related to establishment of a second spawning aggregation of humpback
chub are being focused primarily on the assessing the feasibility of a temperature control device
and testing of low steady flows, however, funding has also been made available through the
adaptive management program to develop a report and schedule describing the steps required to
accomplish establishment of a second population of humpbacl< chub in the Colorado River
ecosystem. The GCMRC is expected to award the contract sometime in March 1999. _

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