9403

• UCREFRP Catalog Number: 9403
• Author: Office, C. U. P. C. A.
• Title: Upper Colorado River Basin Fish and Wildlife Mitigation Program
• USFW Year: 2002.
• USFW - Doc Type: Fiscal Years 1994-1998.
• Copyright Material: NO

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produce locally adapted plant materials
needed for this extensive revegetation
project. Rooted cuttings were planted
throughout the cleared area and
provided with supplemental irrigation
(note water lines in upper left photo).
Once established, supplemental
watering was discontinued. Survival
and growth of new trees has been
excellent. Monitoring continues to
determine the extent to which tamarisk
will reinvade the restored areas.
The endangered Kanab ambersnail formerly occurred at
only one perennial spring on the Colorado River within
Grand Canyon National Park. This population was at risk
from the planned high flow releases from Glen Canyon
Dam. Working with an interagency team lead by the
Arizona Game and Fish Department, the Program
supported the establishment of new wild populations of
the species on the river at sites protected from high
flows. After extensive study, three new habitats were
selected as suitable translocation sites. One of the
translocated populations is thriving at its new
location and is safe from high flows. _,,,~;
In a separate action, attempts were made to
establish a refuge population of the snail at the
Phoenix Zoo (photo on upper right).
Unfortunately, despite concerted effort, the zoo
population has not persisted. We simply do
not yet know enough about this obscure snail
and its habitat requirements to rear the species
in captivity.
~ln aggressive native plant restoration program
was completed at the ~I-~•~Kh3~' IR11=~L
~['IFF'SFFc~'T', on the Colorado River Indian
Tribal reservation near Parker (La Paz County).
Using heavy construction equipment, the tribe
removed 75 acres of impenetrable tamarisk
forest and replanted native species of
cottonwood, mesquite, and willow. A plant
nursery was started on the reservation to
Photograph by:
R. Averill -Murray