Broken-line model of dam storage and evaluation of water supply safety using a bivariate frequency analysis

Chulsang Yoo, Changhyun Jun

Research output: Contribution to journalArticle

Abstract

In this study, a new evaluation method for the water supply safety of a dam is proposed. This method considers both climatic conditions and storage characteristics of a dam. The annual variation of dam storage is represented by a broken-line model, the lines of which are determined by only three factors: the monthly design water supply during the dry period; dam storage at the end of the dry period; and changes in dam storage during the wet period. From the results of bivariate frequency analysis, a unique broken-line model is derived under multiple scenarios with the given return periods for the evaluation of water supply. The proposed method is applied to a total of five major dams in Korea. It is shown that the water supply safety of a dam can be quantified by using the concept of the return period, and five major dams have water supply safety corresponding to return periods of 10-50 years. Among them, the Soyanggang Dam is found to be the most stable with respect to water supply safety in Korea.

Original languageEnglish
Article number05017011
JournalJournal of Water Resources Planning and Management
Volume143
Issue number10
DOIs
Publication statusPublished - 2017 Oct 1

Fingerprint

frequency analysis
Water supply
Dams
water management
water supply
dam
safety
return period
evaluation
Korea
annual variation
storage dam
scenario

Keywords

  • Bivariate frequency analysis
  • Dam storage
  • Design water supply
  • Return period
  • Water supply safety

ASJC Scopus subject areas

  • Geography, Planning and Development
  • Civil and Structural Engineering
  • Water Science and Technology
  • Management, Monitoring, Policy and Law

Cite this

Broken-line model of dam storage and evaluation of water supply safety using a bivariate frequency analysis. / Yoo, Chulsang; Jun, Changhyun.

In: Journal of Water Resources Planning and Management, Vol. 143, No. 10, 05017011, 01.10.2017.

Research output: Contribution to journalArticle

@article{5de6d5075ec84205bdd658ab8eb5c7b0,
title = "Broken-line model of dam storage and evaluation of water supply safety using a bivariate frequency analysis",
abstract = "In this study, a new evaluation method for the water supply safety of a dam is proposed. This method considers both climatic conditions and storage characteristics of a dam. The annual variation of dam storage is represented by a broken-line model, the lines of which are determined by only three factors: the monthly design water supply during the dry period; dam storage at the end of the dry period; and changes in dam storage during the wet period. From the results of bivariate frequency analysis, a unique broken-line model is derived under multiple scenarios with the given return periods for the evaluation of water supply. The proposed method is applied to a total of five major dams in Korea. It is shown that the water supply safety of a dam can be quantified by using the concept of the return period, and five major dams have water supply safety corresponding to return periods of 10-50 years. Among them, the Soyanggang Dam is found to be the most stable with respect to water supply safety in Korea.",
keywords = "Bivariate frequency analysis, Dam storage, Design water supply, Return period, Water supply safety",
author = "Chulsang Yoo and Changhyun Jun",
year = "2017",
month = "10",
day = "1",
doi = "10.1061/(ASCE)WR.1943-5452.0000829",
language = "English",
volume = "143",
journal = "Journal of Water Resources Planning and Management - ASCE",
issn = "0733-9496",
publisher = "American Society of Civil Engineers (ASCE)",
number = "10",

}

TY - JOUR

T1 - Broken-line model of dam storage and evaluation of water supply safety using a bivariate frequency analysis

AU - Yoo, Chulsang

AU - Jun, Changhyun

PY - 2017/10/1

Y1 - 2017/10/1

N2 - In this study, a new evaluation method for the water supply safety of a dam is proposed. This method considers both climatic conditions and storage characteristics of a dam. The annual variation of dam storage is represented by a broken-line model, the lines of which are determined by only three factors: the monthly design water supply during the dry period; dam storage at the end of the dry period; and changes in dam storage during the wet period. From the results of bivariate frequency analysis, a unique broken-line model is derived under multiple scenarios with the given return periods for the evaluation of water supply. The proposed method is applied to a total of five major dams in Korea. It is shown that the water supply safety of a dam can be quantified by using the concept of the return period, and five major dams have water supply safety corresponding to return periods of 10-50 years. Among them, the Soyanggang Dam is found to be the most stable with respect to water supply safety in Korea.

AB - In this study, a new evaluation method for the water supply safety of a dam is proposed. This method considers both climatic conditions and storage characteristics of a dam. The annual variation of dam storage is represented by a broken-line model, the lines of which are determined by only three factors: the monthly design water supply during the dry period; dam storage at the end of the dry period; and changes in dam storage during the wet period. From the results of bivariate frequency analysis, a unique broken-line model is derived under multiple scenarios with the given return periods for the evaluation of water supply. The proposed method is applied to a total of five major dams in Korea. It is shown that the water supply safety of a dam can be quantified by using the concept of the return period, and five major dams have water supply safety corresponding to return periods of 10-50 years. Among them, the Soyanggang Dam is found to be the most stable with respect to water supply safety in Korea.

KW - Bivariate frequency analysis

KW - Dam storage

KW - Design water supply

KW - Return period

KW - Water supply safety

UR - http://www.scopus.com/inward/record.url?scp=85026405168&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85026405168&partnerID=8YFLogxK

U2 - 10.1061/(ASCE)WR.1943-5452.0000829

DO - 10.1061/(ASCE)WR.1943-5452.0000829

M3 - Article

AN - SCOPUS:85026405168

VL - 143

JO - Journal of Water Resources Planning and Management - ASCE

JF - Journal of Water Resources Planning and Management - ASCE

SN - 0733-9496

IS - 10

M1 - 05017011

ER -