Canadian Dam Association Bulletin - Summer 2018 - 11

ABSTRACT
A hydrotechnical study to estimate the Inflow Design Flood (IDF) for a reservoir in
British Columbia or Yukon is a substantial task. A prescriptive approach is not a practical alternative considering the variable data as well as the varying climatic conditions across the region.
The methodologies selected by the hydrologist should be appropriate considering the available
data and failure consequence classification of the dam and must be documented, defensible,
and acceptable to the regulatory authority as well as engineers who will complete a future dam
safety review (DSR) of the reservoir. The APEGBC guideline for completing a DSR requires that
the qualified professional engineer completing the DSR assess the adequacy of the IDF hydrotechnical study considering the dam failure classification and the complexity of the dam system.
Engineers must follow the intent of the DSR guidelines when completing an IDF study. It is the
author's opinion that several government funded regional meteorological and hydrotechnical
studies should be completed or updated. These studies would increase the efficiency, improve
the quality and lower the cost of the completion of hydrotechnical studies for estimation of the
reservoir IDF as well as flood mitigation studies in the region.

RÉSUMÉ
Une étude hydrologique pour estimer la crue entrante de conception pour un réservoir en
Colombie-Britannique ou au Yukon est une tâche appréciable. Une approche prescriptive n'est
pas un choix pratique compte tenu de la variabilité des données et des conditions climatiques
ayant cours sur l'ensemble de la région. Les méthodes sélectionnées par l'hydrologue devraient
être adaptées aux données disponibles et à la classification du barrage quant à ses conséquences
de rupture. Elles doivent être documentées, défendables et acceptables par les instances réglementaires ainsi que pour les ingénieurs qui compléteront les futures évaluations de sécurité des
barrages pour ce réservoir. Les lignes directrices de l'APEGBC pour l'exécution d'une étude de
sécurité exigent que l'ingénieur professionnel qualifié complétant celle-ci évalue l'adéquation de
l'étude hydrologique quant aux débits de conception, compte tenu de la classification du barrage
et de la complexité de l'aménagement. Les ingénieurs doivent respecter l'intention des lignes
directrices pour l'étude de sécurité lors de l'exécution d'une prévision pour les débits entrants.
Selon cet auteur, plusieurs études météorologiques et hydrologiques régionales financées par
le gouvernement devraient être faites ou mises à jour. Ces études augmenteraient l'efficacité,
amélioreraient la qualité et réduiraient le coût de réalisation des études hydrologiques pour
estimer les débits de conception ainsi que des études d'atténuation des inondations dans la région.

Canadian Dam Association * Summer 2018

11



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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