WSP11103

• File Number: 8240.300.10
• Description: San Juan Recovery Implementation Program
• Basin: San Juan/Dolores
• Date: 2/1/1995
• Author: SJRIP
• Title: San Juan River Basin Recovery Implementation Program - Program Document
• Water Supply Pro - Doc Type: Publication

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other native, and non-native fishes. These studies include,
but are not limited to, adult monitoring/radio telemetry
investigations, ichthyofaunal surveys of tributary streams,
and secondary channel ichthyofaunal characterizations.

b. Reproduction and recruitment, if any, will be documented.
Areas of reproductive activity and nursery habitats will be
identified and characterized. This information will be used
to evaluate responses to different volumes of water released
(including timing and duration) from Navajo Dam and to
identify areas of essential habitat.

c. Seasonal and longitudinal distribution of endangered, other
native, and non-native fish species will be documented in
response to various flow releases from Navajo Dam. Habitats
important to maintenance of other native and non-native fish
species will be identified and characterized in relation to
different flow regimes.

d. Information gathered will be utilized as the foundation for
identifying and evaluating the need to implement other
recovery actions, including, but not limited to, habitat
modification (flow or mechanically induced) and population
augmentation.

e. Monitor and evaluate on a regular basis any recovery action
implemented as a result of this research.

3.1.2.2 Recovery

a. The Program Coordinator and the Biology Committee will
cooperatively develop a long range plan to enable
achievement of recovery of the endangered fish species of
the San Juan River basin.

b. Develop population recovery goals for San Juan River
endangered fishes consistent with the approved Colorado
Squawfish Recovery Plan, the recovery plan to be prepared
for the razorback sucker, and Upper Basin Recovery
Implementation Program.

3.2 PROTECTION OF GENETIC INTEGRITY AND MANAGEMENT AND
AUGMENTATION OF POPULATIONS

3.2.1 Statement of Problem

The relative genetic distinctiveness of the San Juan River
populations of Colorado squawfish and razorback sucker have not
been determined. At critically low levels, the populations of
these species may be vulnerable to adverse demographic or
environmental events which severely diminish genetic variability