Fort Peck Reservation Rural Water System Act of 2000

Fort Peck Reservation Rural Water System Act of 2000 - Directs the Secretary of the Interior to plan, design, construct, operate, maintain, and replace the Assiniboine and Sioux Rural Water System (Water System) within the Fort Peck Indian Reservation in Montana. Directs the Secretary to enter into a cooperative agreement with the Fort Peck Tribal Executive Board regarding the Water System.

Provides that title to the Water System be held in trust by the United States for the Fort Peck tribes and not be transferred unless a transfer is authorized by an Act of Congress enacted after the enactment of this Act.

Limits the availability of Water System construction funds until certain requirements are met.

Sets the Federal share of Water System construction, operation, and maintenance costs at 100 percent.

Directs the Secretary to enter into a cooperative agreement with Dry Prairie Rural Water Association Incorporated or a successor non-Federal entity to provide Federal funds for the planning, design, and construction of the Dry Prairie Rural Water System in Roosevelt, Sheridan, Daniels, and Valley Counties, Montana, outside the Fort Peck Indian Reservation. Limits the Federal share to 76 percent. Requires cooperative agreement concurrence by the Water System Board. Directs the Secretary to: (1) interconnect the Dry Prairie System with the Water System; and (2) provide for the delivery of water to the Dry Prairie System from the Missouri River through the Water System. Prohibits Federal funds from being used for operation and maintenance expenses associated with water deliveries to the Dry Prairie System.

Directs the Western Area Power Administration to make available at the firm power rate, from power designated for future irrigation and drainage pumping for the Pick-Sloan Missouri Basin program, the capacity and energy required to meet the pumping and incidental operational requirements of the Fort Peck Reservation Rural Water System. Makes the water supply project constructed with assistance under this Act eligible to receive firm power from such program as long as the Fort Peck system operates on a not-for- profit basis. Sets forth provisions regarding recovery of expenses associated with power purchases and purchases of additional power.

Requires the Fort Peck tribes and Dry Prairie Rural Water Association Incorporated to develop a water conservation plan containing a description of water conservation objectives and measures and a schedule for implementing such measures and this Act to meet such objectives.

Requires any funds received by the Fort Peck tribes pursuant to this Act to be used to offset any claims for money damages against the United States for water rights based on a treaty, compact, executive order, agreement, aboriginal title, or law.

Authorizes appropriations.