EP 1130-2-520
29 Nov 96
CHAPTER 10 - RESTRICTED AREAS FOR HAZARDOUS WATERS AT DAMS AND
OTHER CIVIL WORKS STRUCTURES
10-1. Purpose. To establish guidance on restricting areas upstream and downstream of certain
project structures for public safety purposes and establishing a standard criteria for determining
the extent of these restricted areas. The procedures for establishing restricted areas shall be
applied at all Corps-owned locks and dams, flood control dams, multi-purpose dams, reregulation
structures, and any other structures with similar hazards to boating or visitor safety.
10-2. Boundary Determination.
a. To establish the minimum area subject to restriction, determine the hydraulic line by
using guidelines at Appendix AA.
b. To establish the buffer area between the hydraulic line and the final boundary of the
restricted area, evaluate operational considerations by using the questionnaire at Appendix AB.
The evaluation team (see Chapter 10 of ER 1130-2-520) will conduct an onsite survey in
conjunction with this review.
c. The evaluation team will document its deliberations, including the calculation of the
hydraulic line, the team's evaluation of operational considerations and views from other sources,
if any. The approving authority will sign the boundary determination.
10-3. Implementation.
a. All projects identified in paragraph 10-2 above shall have a completed study included in
the Operation Management Plan (OMP). The OMP shall address marking as well as the possible
use of buoys, floats, physical barriers, audible warning devices, or other physical measures for
preventing public access. The plan shall also address escape or measures for dealing with
potential public entry into restricted areas' hazardous waters.
b. Physical barriers to pedestrian and boater access will be erected where practical.
c. The boundary and approaches to each restricted area shall be marked with signs in
accordance with the Sign Standards Manual (EP 310-1-6a&b). Buoys, if used shall be in
conformance with the Coast Guard regulations in 33 CFR 62.33 (U.S. Aids to Navigation
System, Information and Regulatory Marks) or the Uniform State Waterway Marking System.
The Project Sign Plan shall address the signing system used in conjunction with the restricted
area. (See also EP 1130-2-520, Chapter 2.)
d. The public shall be informed of the boundaries of each restricted area. Charts and
project brochures will be updated, as necessary to identify these areas. Additional public
education programs are also recommended.
e. Enforcement assistance may be provided by local law enforcement agencies (if local
law applies), Corps personnel (those with citation authority under 36 CFR 327), or the U.S. Coast
Guard.
10-1
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