8031

• UCREFRP Catalog Number: 8031
• Author: U.S. Department of the Interior.
• Title: Fish and Wildlife Service Final Biological and Conference Opinion on Lower Colorado River Operations and Maintenance - Lake Mead to Southerly International Boundary.
• USFW Year: 1997.
• USFW - Doc Type: \
• Copyright Material: NO

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BIOLOGICAL OPIMON

Consultation History

and/or adverse modification for three species. Discussion of some potential
reasonable and prudent alternatives (RPA).

October 18, 1996 Reclamation presents Service with preliminary survey data on the
southwestern willow flycatcher.

October 29, 1996 Memorandum from Reclamation with maps of the 5-mile zone and features
like 242 well field.

November 4, 1996 Meeting on BA supplemental information and BO information needs.
Discussion of potential RPA parts.

November 4, 1996 Memorandum from Reclamation with: description of determining annual
surplus water, references on equalization between Mead and Powell, draft
project description, summary table of flycatcher survey data, references on
the Goodding willow community and willow inundation, report on
revegetation on lower Colorado, Virgin River riparian study and field maps,
biological investigation of the lower Virgin River, flycatcher results for
lower Virgin River, Environmental report of the Virgin River, Fish and
Wildlife Coordination Act report for lower Virgin River Water Quality
Improvement Program, drawings of 242 well field, drainage channel, sludge
area, and flat-tailed horned lizard habitat.

November 15, 1996 Memorandum from Reclamation with two tables, water depths at Lake Mead
Delta, and southwestern willow flycatcher coordinates and other
information.

November 18, 1996 Memorandum from Reclamation with preliminary bathymetric contour
maps, Lake Mead Delta.

November 25, 1996 Meeting on BA and BO development, discussions of possible reasonable and
prudent actions. Corrected acreages to match corrected vegetation maps in
Technical Memorandum below and memorandum with explanation of
bathymetric maps.

November 25, 1996 Memorandum from Reclamation with revised draft project description,
complete set of bathymetric maps to replace those of November 18, GIS
vegetation maps of the LCR, GIS maps overlaying southwestern willow
flycatcher sites on vegetation maps, Technical Memorandum describing
vegetation mapping methods, and satellite imagery of the LCR.

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