Geoscience Reference
In-Depth Information
Figure 26.1
The Colorado River system, from Lake Powell to the western-most boundary of Grand Canyon National
Park, Arizona, showing key land management designations.
exercise other authorities 'in such a manner
as to protect, mitigate adverse impacts to and
improve values for which Grand Canyon National
Park and Glen Canyon National Recreation Area
were established, including but not limited to,
natural and cultural resources and visitor use'.
The Secretary of the Interior oversees work
of agencies within the US Department of the
Interior ('the Department') responsible for the
management of public lands and related resources.
These agencies include the Bureau of Reclamation,
which manages Glen Canyon Dam, and the
National Park Service, which manages Grand
Canyon National Park and Glen Canyon National
Recreation Area.
In addition to directing the Secretary of the
Interior to protect downstream resources, the
US Congress specified that the GCPA should be
implemented in a manner fully consistent with the
provisions of a variety of existing laws that govern
water allocation and development in the Colorado
River Basin; provide for long-term monitoring and
research to determine the effect of the Secretary's
actions; and require consultation with federal and
state agencies, Native American tribes, and the
general public, including affected stakeholders as
required by the Grand Canyon Protection Act of
1992. The Endangered Species Act of 1973 also has
significantly influenced dam operations throughout
the Colorado River Basin.
