WSP05309

• File Number: 8042.A
• Description: Section D General Studies - Other States - Arizona
• State: AZ
• Basin: Statewide
• Date: 7/1/1967
• Author: Arizona Interstate S
• Title: 21 st Annual Report of the Arizona Interstate Stream Commission
• Water Supply Pro - Doc Type: Report/Study

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directly affected. It is possible that a further treaty with Mexico
may be deemed advisable.

However, negotiations to this end cannot begin until a
current hydrologic study of the Basin is completed by the Bureau
of Reclamation.

IV. Collection and analysis of basic data.

Collection, analysis and publication of basic hydrologic
data related to surface and groundwater continue to be of vital
importance to formulation of plans and development programs
for utilization of the waters of interstate streams.

The Commission cooperates with the office of the State
Land and Water Commissioner and the Bureau of Reclamation
in determining the nature of such investigations and the areas
for which there is most urgent need of basic data.

V. Arizona v. California Litigation.

Following the Court's decision giving Arizona title to 2.8
million acre-feet of mainstream Colorado River water annually,
the only remaining unresolved issue in the case is settlement
of the claims to prior perfected rights by users of mainstream
water in Arizona and California. The problems related to settle-
ment of this issue continue as a function of the Commission's
legal counsel.

VI. New projects.

The Commission maintains an active interest in new projects
suggested or proposed for improved control and distribution
of water as related to utilization of interstate streams. Such
projects include those studied at a reconnaissance level by the
Bureau of Reclamation in the northern counties. These would,
in the main, implement exchanges of water.

VII. Indian water uses.

The rights and uses of water on Indian reservations are
related to non-Indian uses. The commission continues to study
the relationships and their implications for development of the
waters of interstate streams.

VIII. Aqueduct right-of-way.

The Commission has established and continues to proteCt
a right-oi-way for an aqueduct from the Colorado River. The
applications are renewed from time to time, as required by law.

IX. Functions related to national legislation.

Many measures are proposed to Congress which can affect
the development of Arizona's water resources. The Stream Com-
mission analyzes such measures, confers with other agencies

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