nt projections of local and downstream needs.

According to present data, for maximum usefulness and safety,
Bloomington should be completed on an expeditious basis and the
others at appropriate intervals thereafter in relation to growth of
demand.

To make certain that desirable flexibility in planning will be
maintained, the following conditions should be borne in mind by all
Federal, State, or interstate agencies with present or future
concern with Basin affairs, and by the United States Congress and
the State legislatures, and should be taken into consideration in
the shaping of authorizing legislation:

(a) Individual reservoirs should be susceptible to reevaluation and
modification during design stage in light of new techniques of
water supply--including demonstrated feasibility and acceptability
of the upper estuary for this purpose--and of water quality
control, or unforeseeable modifications of aims or expected
demands, should such change be determined to be beneficial to the
overall well-being of the Basin.

(b) Prior to construction of any reservoir with benefits for
recreation and water quality downstream, responsible State and
local agencies should be required to furnish assurances that the
recreational and scenic qualities of the banks of the rivers so
benefited will be amply protected.

(3) By the continuing assessment by the Corps of Engineers of the
water supply needs of the Washington metropolitan area with the
objective of meeting future demands as they develop.

(4) By research and investigation to ensure a sound scientific
basis for future action in relation to the Basin's water resources
and to provide maximum flexibility of choice to technicians,
planners, and decision makers:

(a) A full-scale and continuing water data collection program to be
conducted in the Basin by the U.S. Geological Survey, with the
object of building and keeping up to date the facts relevant to the
river system and related aquifers.

(b) Specific and continuing research by the Department of the
Interior as well as other agencies into the nature and feasibility
of a full range of possible alternative sources of water supply in
the Basin, including new technological approaches.

(c) A special study should be made, based on exten