(a)
In general— Notwithstanding any other provision of law, the Secretary of the Army, acting through the Chief of Engineers, shall not take any action to establish a restricted area prohibiting public access to waters downstream of a dam owned by the Corps of Engineers.
(b)
Exclusion— For purposes of this Act, installing and maintaining sirens, strobe lights, and signage for alerting the public of hazardous water conditions shall not be considered to be an action to establish a restricted area under subsection (a).
(c)
Effective date—
(1)
In general— Subject to paragraph (2), this section shall apply to an action described in subsection (a) on or after August 1, 2012.
(2)
Existing restrictions— If the Secretary of the Army, acting through the Chief of Engineers, has taken an action described in subsection (a) during the period beginning on August 1, 2012, and ending on the date of enactment of this Act, the Secretary shall—
(A)
cease implementing the restricted area resulting from the action; and
(B)
remove any barriers constructed in connection with the restricted area.