A bill to authorize the construction of a water diversion structure on the Potomac River, Md., subject to execution of an agreement providing for equitable allocation of available water during low flow periods of the Potomac River.

Grants the consent of Congress to the construction of a water diversion structure on the Potomac River in Maryland by the Washington Suburban Sanitary Commission. Stipulates that appropriate governmental entities must enter into a written agreement establishing a plan for allocation of such water prior to construction.