WSP04310

• File Number: 8449.600
• Description: Chatfield Reservoir
• State: CO
• Basin: South Platte
• Date: 1/1/1984
• Author: CWCB
• Title: Division of Parks Temporary Storage in Chatfield - Background Data
• Water Supply Pro - Doc Type: Data

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ER 1105-2-100
28 Dee 90

SECTION VII ~ WATER SUPPLY

4-28. Federal Interest. National polrcy has been, developed over a number of
years. This yolicy was most recently articulated by Congress in Section 932 of
Water Resources Development Act of 1986: This section further amends the 1958
Water Supply Act (Title III of Public Law 85-500) to reduce the Federal interest
(in Corps of Engineers projects) in the long range management of supplies and
assigned more of the financial.burden of supplies to the non-Federal user.

4-29. Tvues of Inrorovement. States and local interests have the primary
responsibilities in the development of their water supplies. However, the
Federal Government may participate and cooperate with states and local interests
in developing such water supplies in connection with water resource improvements
for construction, operation, maintenance, and modification of Federal' navigation,
flood control, or multipurpose projects when certain conditions of non-Federal
participation are met.

a. Multipuroose Proiect. A limit is placed on the percent of municipal
and industrial (M&I) water supply that ean be included in a multipurpose project.
A multipurpose project is defined as: one in which at least 10 percent of the
total project national economic development (NED) benefits are attributed to
flood control, navigation, and/or agricultural water supply that requires
separabie, economically justified storage in order to develop the anticipated
benefits from these purposes; or where separable storage is not required to
develop the NED benefits attributed to flood control, navigation,' and/or
agricultural water supply, such NED benefits must be at least 20 percent of total
project benefits. If water SUpply benefits exceed 90 percent of total project
benefits in the first case or 80 percent in the second case, the project will be
considered as a single purpose municipal and industrial water supply project for
which there is no Federal interest. Total project benefits include non-high
priority outputs such as M&I water supply, hydropower, and recreation.

b. Sin~le-Puroose Proiect. Except for analysis of existing data under
Section 22 of the Water Resources Development Act of 1974, the Corps, of Engineers
will not use General Investigations funds to conduct single purpose water supply
studies, unless specifically agreed to by Congress and the Administration. The
Corps, may, however, conduct singl... purpose water supply studies for non-Federal
interests as a support activity under the provisions of the Intergovernment
Cooperation Act of 1968 (Public Law 90-577). This prohibition does not-~elate
to essentially single purpose water supply modifications to Corps projects
previously constructed to serve flood damage reduction and/or navigation'
purposes. The definition of a single purpose M&I water supply project is
provided in paragraph 4-29a above.

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