S-3.1.01, r. 1 - Dam Safety Regulation

Section 10 Disposition versions

2023-07-06

10. Following are the classes of dams based on the values determined under section 9, in addition to the class referred to in the second paragraph:

“P” Value	Dam Class
P ≥ 120	A
70 ≤ P < 120	B
25 ≤ P < 70	C
P < 25	D

A dam may only be classified as a Class E dam if all the following conditions are met:

(1)  the dam failure consequence category is “very low”;

(2)  the “P” value determined under section 9 is less than 70;

(3)  the owner requests such a classification and files, in support, a report or a study prepared under the responsibility of an engineer.

If a dam consists of more than 1 section, each section must be assessed individually and the dam class shall be that of the section with the highest “P” value.

O.C. 300-2002, s. 10; O.C. 901-2014, s. 22; O.C. 989-2023, s. 9.

2014-11-13

10. Following are the classes of dams based on the values determined under section 9, in addition to the class referred to in the second paragraph:

_________________________________________________

      “P” Value                Dam Class
_________________________________________________

        P ≥ 120                    A
_________________________________________________

     70 ≤ P < 120                  B
_________________________________________________

     25 ≤ P < 70                   C
_________________________________________________

         P < 25                    D
_________________________________________________        

A dam in the Very Low Consequence category is a Class E dam if the “P” value determined under section 9 is less than 70.

If a dam consists of more than 1 section, each section must be assessed individually and the dam class shall be that of the section with the highest “P” value.

O.C. 300-2002, s. 10; O.C. 901-2014, s. 22.

2012-09-01

10. Following are the classes of dams based on the values determined under section 9, in addition to the class referred to in the second paragraph:

_________________________________________________

      “P” Value                Dam Class
_________________________________________________

        P ≥ 120                    A
_________________________________________________

     70 ≤ P < 120                  B
_________________________________________________

     25 ≤ P < 70                   C
_________________________________________________

         P < 25                    D
_________________________________________________        

A dam in the Very Low Consequence category under sections 17 and 18 is a Class E dam if the “P” value determined under section 9 is less than 70.

If a dam consists of more than 1 section, each section must be assessed individually and the dam class shall be that of the section with the highest “P” value.

O.C. 300-2002, s. 10.