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0252: CPF: Estimating Inflows and Associated Uncertainties - Guidelines

Understanding the hazards that arise from rare to extreme floods is important for reservoir management in terms of dam safety, maintenance, and operational perspectives. Estimates of floods are affected by substantial uncertainties from the natural variability inherent in the temporal and spatial extent of precipitation, runoff and flood-flow routing, knowledge uncertainty regarding the characterization of rare to extreme events, and the deep uncertainty associated with human actions and climate

Dec 24, 2020 - Sep 29, 2022

HOP

Research

0230: Grouted Post-Tensioned Rock Anchor Assessment

This report presents the results of an extensive study of grouted post-tensioned rock anchors installed in concrete gravity dams. The purpose of the study is to obtain a better understanding of the condition and capacity of existing post-tensioned rock anchors for which grout serves as the only form of corrosion protection. The performance of grout-protected anchors of various designs under actual site conditions is assessed to determine the effects of the aging process.Grout encapsulation was t

Nov 12, 2012 - Oct 24, 2016

DSIG

Research

0218: Gauging the Effectiveness of Dam Safety Programs

The concept for the project, ‘Gauging the Effectiveness of Dam Safety Programs’, originated with a half-day workshop on this topic in Vancouver on 21 October 2007. As finally commissioned, the objective of the project was to enable dam owners and operators to review and improve the ways in which they judge the effectiveness of their dam safety programs by providing information on the ways in which other dam owners assess their programs, and by then providing an opportunity for dialog

May 13, 2008

DSIG

Research

0225: Comparison of Flood Hazard Estimation Methods for Dam Safety - Phase 1 Task 1

This project provides a structured review of the available and evolving methods for estimating flood flows, where they are used and, importantly, the assumptions and limitations they contain. The project outputs are provided in two task reports.The Task 1 report provides a review of the regulatory frameworks in place around the world and their impact on the estimation of flood flows, and is covered here. A second, Task 2 report focuses on the estimation approaches themselves and is reported sepa

Sep 14, 2011 - Nov 28, 2013

DSIG

Research

0253: CPF: Best Practices for Assessment of Existing Spillways

This document provides best practices for performing hands-on inspections and assessments of existing spillways for dams. The guidance presented herein introduces the current state of practice for spillway assessments, case histories of spillway failures, and the approach for spillway assessments. Assessments include a thorough review of the original design and construction documentation, an inspection of the current condition of the spillway, and an assessment of the spillway’s ability to perfo

Oct 29, 2020 - May 2, 2022

DSIG

Research

0236: CPF: Dam Safety Technology Roadmap

The Dam Safety Technology Roadmap updates the technical vision of the Dam Safety Interest Group (DSIG) and attempts to set priorities for future research programs and projects. Program areas are identified to provide dam owners and operators with reliable knowledge on dam safety issues and a greater capacity to share and transfer knowledge within the DSIG and more broadly with researchers, engineering practitioners, and academics to leverage influence within the industry.This white paper summari

May 1, 2015 - Sep 6, 2016

DSIG

Research

0214: A Guide to Temperature Measurements for Seepage Investigation and Monitoring of Embankment Dams

This guide is intended to give a deeper knowledge how to use temperature measurements tomonitor embankment dam seepage, including the fundamental principles, different measurementtechniques, and its application. It is based on practical experience and demonstrates how the methodhas been applied in several dam engineering projects.The use of temperature measurements forseepage detection in dams will be a valuable complement to conventional seepage monitoringmethods. The potential of the method is

Feb 9, 2009

DSIG

Research

0205B-1: Investigation of Geophysical Methods for Assessing Seepage and Internal Erosion in Embankment Dams: Self-Potential Field Data Acquisition Manual

T992700-0205B-1. Self-Potential Field Data Acquisition Manual This volume marks one of a series of reports on the subject of geophysical methods and their use in assessing seepage and internal erosion in embankment dams. These reports are available both separately and as a package.This field manual is designed to help the user obtain high-quality self-potential (SP) data in support of embankment dam seepage investigations. The manual covers SP survey design, equipment, data acquisition

Dec 1, 1999 - May 1, 2005

DSIG

Research

03108: Gates Inspection and Maintenance Guide

Hydroelectric facilities have been constructed since the early 1890s. As of this writing, the majority of the headgates, spillway gates, and other water control devices at these facilities are at an average age of approximately 70 years. Although gates are essential components of an operating hydro facility for reasons such as river flow regulation, reservoir safety, and flood control, and meeting environmental and recreational priorities, they are often not recognized as a critical priority for

Sep 8, 2020 - Jul 27, 2022

Research

0234B: Dam Safety Maturity Matrices Version 2

The Dam Safety Maturity Matrices Version 2 (“the matrices”) have been developed for dam owners to assess the effectiveness of their dam safety programs against industry practice.This manual describes how the matrices can be used and how to prepare and complete a dam safety program evaluation using the matrices. The current state of development (or maturity) of a dam safety program can be evaluated for each of its elements and sub-elements. If required, improvements to the program can

Jan 19, 2018 - May 30, 2019

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