Canadian Dam Association Bulletin - Summer 2018 - 13

In this paper the author refers to the
qualified professional as the hydrologist. If the hydrologist is not a registered professional engineer, their work
must be supervised and checked by a
registered engineer as dams are engineered structures.
2.1 British Columbia
The BC Dam Safety Regulation (the
Regulation) was amended in February
2016 when the Water Sustainability
Act was enacted. The Regulation indicates in Section 21 that a Dam Safety
Officer (DSO) may request any type
of site investigation or dam monitoring data, dam design, or surveillance
records. If the requested information
does not exist or is not available, the
Comptroller of Water Rights or a
Water Manager may order the owner
of the dam to do what is necessary to
provide the information. An order to
drain the reservoir may be issued if
the appropriate information cannot
be provided. In addition, Section 27
of the Regulation indicates that the
Comptroller or Water Manager may
order a dam owner to retain an
independent expert to review a design
or issue. This is typically only done
if there is a difference of opinion
between the dam owner's qualified
professional engineer and the DSO or
if the dam owner and their engineer
are requesting authorization to modify/construct a dam in a manner that
is not common in BC.
FLNRO DSOs generally refer to the
Water Dam IDF values, presented in
Table 1, as being the IDF requirements
for fresh water dams in BC. However,
a DSO will consider the specific
situation of the dam and do recognize the CDA recommendation that
the values are "IDF Target Levels for
Initial Consideration and Consultation
between Owner and Regulator." If a
DSO does not accept the hydrotechnical IDF analysis for a dam, the dam is
not in compliance with the Regulation.
If the spillway has a smaller flow capacity than determined as suitable in a
hydrotechnical study, the dam is not
in compliance with the Regulation. It
is general good practice to construct
new spillways utilizing the standards
Canadian Dam Association * Summer 2018

in Table 1. However, for existing dams
if a recent IDF study indicates the spillway is undersized, other considerations may convince the regulatory
authority that the spillway does not
require upgrading.
The BC Mines Code (MEM, 2016) provides design standards for a Tailings
Storage Facility (TSF) and indicates
that the CDA dam safety guidelines
must be considered during the design
process. The Code provides the minimum IDF values presented in Table 1.

If the spillway capacity of a TSF is less
than the representative number in
Table 1, the dam is not in compliance
with the Code. The CDA website (2017)
contains further information.
The Association of Professional
Engineers and Geoscientists of
British Columbia professional practice guidelines titled Legislated
Dam Safety Reviews in BC (APEGBC
2016) Appendix H: Natural Hazard
Considerations in Dam Safety Reviews,
indicates the following: "The qualified

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Table of Contents for the Digital Edition of Canadian Dam Association Bulletin - Summer 2018

Board of Directors
President’s Message
Inflow Design Flood Estimation for Reservoirs in British Columbia and Yukon Territory
ICOLD 2018: Canadian Expertise on the World Stage
ICOLD Corner
CDA Will Be Meeting in Quebec City!
CDA Directors & Officers – Call for Nominations
2018 CDA Awards – Call for Nominations
Notice of Annual General Meeting
Time to Renew Your Membership
Clean Energy B.C.'s Operational Excellence Award for Corra Linn Dam
Buyers’ Guide and Trade List
Canadian Dam Association Bulletin - Summer 2018 - Intro
Canadian Dam Association Bulletin - Summer 2018 - cover1
Canadian Dam Association Bulletin - Summer 2018 - cover2
Canadian Dam Association Bulletin - Summer 2018 - 3
Canadian Dam Association Bulletin - Summer 2018 - 4
Canadian Dam Association Bulletin - Summer 2018 - 5
Canadian Dam Association Bulletin - Summer 2018 - 6
Canadian Dam Association Bulletin - Summer 2018 - Board of Directors
Canadian Dam Association Bulletin - Summer 2018 - President’s Message
Canadian Dam Association Bulletin - Summer 2018 - 9
Canadian Dam Association Bulletin - Summer 2018 - Inflow Design Flood Estimation for Reservoirs in British Columbia and Yukon Territory
Canadian Dam Association Bulletin - Summer 2018 - 11
Canadian Dam Association Bulletin - Summer 2018 - 12
Canadian Dam Association Bulletin - Summer 2018 - 13
Canadian Dam Association Bulletin - Summer 2018 - 14
Canadian Dam Association Bulletin - Summer 2018 - 15
Canadian Dam Association Bulletin - Summer 2018 - 16
Canadian Dam Association Bulletin - Summer 2018 - 17
Canadian Dam Association Bulletin - Summer 2018 - 18
Canadian Dam Association Bulletin - Summer 2018 - 19
Canadian Dam Association Bulletin - Summer 2018 - 20
Canadian Dam Association Bulletin - Summer 2018 - 21
Canadian Dam Association Bulletin - Summer 2018 - 22
Canadian Dam Association Bulletin - Summer 2018 - 23
Canadian Dam Association Bulletin - Summer 2018 - 24
Canadian Dam Association Bulletin - Summer 2018 - 25
Canadian Dam Association Bulletin - Summer 2018 - 26
Canadian Dam Association Bulletin - Summer 2018 - 27
Canadian Dam Association Bulletin - Summer 2018 - ICOLD 2018: Canadian Expertise on the World Stage
Canadian Dam Association Bulletin - Summer 2018 - ICOLD Corner
Canadian Dam Association Bulletin - Summer 2018 - CDA Will Be Meeting in Quebec City!
Canadian Dam Association Bulletin - Summer 2018 - 31
Canadian Dam Association Bulletin - Summer 2018 - 32
Canadian Dam Association Bulletin - Summer 2018 - 33
Canadian Dam Association Bulletin - Summer 2018 - CDA Directors & Officers – Call for Nominations
Canadian Dam Association Bulletin - Summer 2018 - 2018 CDA Awards – Call for Nominations
Canadian Dam Association Bulletin - Summer 2018 - Notice of Annual General Meeting
Canadian Dam Association Bulletin - Summer 2018 - Time to Renew Your Membership
Canadian Dam Association Bulletin - Summer 2018 - 38
Canadian Dam Association Bulletin - Summer 2018 - Clean Energy B.C.'s Operational Excellence Award for Corra Linn Dam
Canadian Dam Association Bulletin - Summer 2018 - 40
Canadian Dam Association Bulletin - Summer 2018 - Buyers’ Guide and Trade List
Canadian Dam Association Bulletin - Summer 2018 - 42
Canadian Dam Association Bulletin - Summer 2018 - cover3
Canadian Dam Association Bulletin - Summer 2018 - cover4
Canadian Dam Association Bulletin - Summer 2018 - outsert1
Canadian Dam Association Bulletin - Summer 2018 - outsert2
Canadian Dam Association Bulletin - Summer 2018 - outsert3
Canadian Dam Association Bulletin - Summer 2018 - outsert4
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