[QUOTE=DaveStewart;507099] The way the regulation the Corps is citing as the reason they are going to restrict the areas has wording that allows for a compromise...QUOTE]
Dave, I put the text of the reg below. I don't know the corps has to compromise on it. They come up with the restricted area based on the highest and worst conditions, and they have to include the views of the sources. But they don't have to compromise the level of safety the restricted area will provide based on local comments only. Now on the other hand, if the local comments, and corps analysis, agree that what the corps first recomended is excessive, and can be reduced and still provide safety, then the corps can site that and reduce the size of the restricted area. Example: Can the discharge be modified to reduce the area of hazardous waters downstream?
Here's a link to the exact specs, look in appendix AA and AB. EP 1130-2-520 (29 November 1996)
And I agree, to folks can read the same thing and come away with 2 considered and different opinions. I repect yours.
ER 1130-2-520
29 Nov 96
10-1
CHAPTER 10 - RESTRICTED AREAS FOR HAZARDOUS WATERS AT DAMS AND
OTHER CIVIL WORKS STRUCTURES
10-1. Purpose. This chapter establishes the policy on restricted areas upstream and downstream
of certain project structures, and establishes standard criteria for determining the extent of these
restricted areas.
10-2. Policy. It is the policy of the Corps of Engineers that:
a. Restricted areas prohibiting public access shall be established for the hazardous waters
immediately upstream and downstream of all Corps-owned locks and dams, flood control dams,
multi-purpose dams, re-regulation structures, and any other structures with similar hazards to
boating or visitor safety.
b. The extent of each restricted area shall be based on hydraulic criteria and operational
considerations. The minimum size of a restricted area is fixed by the hydraulic line and a buffer
zone beyond the line as specified in Chapter 10 of EP 1130-2-520, and in accordance with the
following criteria:
(1) Upstream restricted areas must be sized (including necessary buffer zones) to allow a
boater to reach shore before being carried by currents into the dam or intake area, or to allow a
reasonable expectation of rescue in the event of a boating accident or motor failure.
(2) Downstream restricted areas must be sized (including necessary buffer zones) to
prevent a boat that is without power or a swimmer from being drawn into the dam or discharge
areas. The restricted zones must encompass areas containing turbulent waters caused by the
operation of the project that creates significant risk of swamping or capsizing small boat that are
either underway, moored, or adrift.
c. Restricted area boundaries shall ordinarily be established based on high flow condition,
not variable with fluctuating flows, intermittent discharges, or seasonal variations.d. Approval authority for defining boundaries of restricted areas is delegated to MSC
commanders who may redelegate the authority to district commanders.
e. The District Commander will appoint an interdisciplinary team from Safety,
Hydraulics, and Operations to evaluate all applicable sites and to recommend restricted area
boundaries and associated control measures. The team will consult with the person in charge at
each site, other Corps representatives, and other Federal, state, and local agencies (where
necessary) who may have significant interest or input in the matter. The team will document its
findings, including the calculation of the hydraulic line, operational considerations and views
ER 1130-2-520
29 Nov 96
from other sources. The approving authority will sign the boundary determination.10-2


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