Hydropower Reform Coalition - Engineering

Dam Removal and Historic Preservation: Reconciling Dual Objectives

Rupak Thapaliya — Thu, 31 Jul 2008 15:40:15 -0500

Source: AR

Volume:

Year: 2008

Abstract

Too often advocates for river restoration through dam removal find themselves in the middle of a project and at odds with potential partners over matters of historic preservation. The goal of Dam Removal and Historic Preservation: Reconciling Dual Objectives is to help dam removal proponents and advocates for historic preservation work together more effectively to achieve their mutual goals, while building constructive relationships and successfully reconciling potentially competing objectives. This report combines a primer on Section 106 of the National Historic Preservation Act with methods for avoiding, minimizing, or mitigating the adverse effects of a dam removal project and concludes with real life case studies.

Available online at http://www.americanrivers.org/site/DocServer/Dam_Removal_and_Historic_Preservation.pdf?docID=8161

Author(s)

Serena McClain, Stephanie Lindloff and Katherine Baer

Contact

Notes

Attachment	Size
Dam_Removal_and_Historic_Preservation.pdf	1.81 MB

Developing fish passage and protection at hydropower dams

Rupak Thapaliya — Fri, 14 Mar 2008 11:28:27 -0500

Source: ScienceDirect

Volume:

Year: 2006

Abstract

The development of waterways, for hydropower and other industrial uses, has substantially altered many of the freshwater habitats of the planet and this has had considerable impact upon aquatic organisms. Industrial changes in aquatic ecosystems, including hydropower development, can restrict or delay fish migration, increase predation, affect water quantity and quality, and subject fish to direct damage and stress. This review will focus on the consequences for fish welfare and the progress towards developing the means to pass and protect fish at hydropower dams, at water withdrawal facilities, and in other engineered aquatic environments. It primarily concerns the large mainstem hydropower dams in the Columbia-Snake River Basin in the northwestern United States. Some methods for improving fish passage and protection at hydropower damsinvolve modifications and additions to engineered structures and occasionally use sensory stimuli such as light, sound, turbulence, or electric fields to influence fish distributions. Measures to improve fish survival, like spilling water at a dam to provide non-turbine passage, can cause other problems for fish, for example higher dissolved gas concentrations downstream. Reducing losses of fish in industrial environments is desirable in both the industrialized world, where many fish-related problems currently exist, and in the developing world, here lessons already learned may make future development more cost-effective and benign.

Author(s)

Carl R. Schilt

Contact

Environmental Research Associates
P.O. Box 225
North Bonneville, WA 98639

Notes

Attachment	Size
Developing fish passage and protection at hydropower dams- Carl R. Schilt.pdf	566.28 KB

Advanced Sensor Tag for Improved Turbine Design

admin — Wed, 04 Apr 2007 10:18:22 -0500

Source:

Volume:

Year: 1998

Abstract

Author(s)

Neitzel

Contact

Notes

Counting on Fish Protection

admin — Wed, 04 Apr 2007 10:18:21 -0500

Source:

Volume: Jan/Feb 1995 pp31-36

Year: 1995

Abstract

The number of salmon migrating up US rivers has declined significantly in recent years, bringing hydro plants under increased scrutiny. Indeed, fish protection has become the biggest issue in hydro plant relicensing, and utilities across the country are under pressure to step up their fish protection efforts. Currently, much of the regulatory emphasis is focused on downstream passage technologies. EPRI's laboratory and field tests have identified the most promising of these technologies. However, the effectiveness of each approach varies according to the site and the fish species and life stage.

Author(s)

Lamarre, L.

Contact

Notes

Effectiveness of water release as mitigation for hydroelectic impacts to fish

admin — Wed, 04 Apr 2007 10:18:21 -0500

Source:

Volume: August, 1995 pp81-96

Year: 1995

Abstract

Utility companies release water to mitigate the effects of hydroelectric projects on fish habitats. Utility companies, government agencies, and research communities in Canada, the United States, Europe, New Zealand, and Australia were surveyed as part of a Canadian Electrical Association study to evaluate the effectiveness of water release as a mitigation. Respondents identified only 28 projects in which water was released specifically to protect fish habitats. Fewer than half of these projects (12) were judged as being effective. Six case histories with preimpact assessment and postimpact monitoring were reviewed. In four cases fish habitat or fish populations or both were maintained; in two cases they were not. The effectiveness of water release differed among rivers and fish species, and was greatest when designed to meet the habitat requirements of each life-history stage. A review of the literature did not support the theory that a particular fraction of the mean annual flow provides the best fish habitat. Although smaller changes in the flow regime had smaller effects, increasing minimum flows above those historically observed did not necessarily increase fish production.

Author(s)

Lewis , A.F. , Mitchell , A.C.

Contact

Notes

Fish entrainment and turbine mortality review and guidelines. Final Report.

admin — Wed, 04 Apr 2007 10:18:18 -0500

Source:

Volume: Research Project 2694-01; EPRI TR-101231

Year: 1992

Abstract

Author(s)

EPRI (Electric Power Research Institute)

Contact

Electic Power Research Institute

Notes

Fisheries Handbook of Engineering Requirements and Biological Criteria

admin — Wed, 04 Apr 2007 10:18:16 -0500

Source:

Volume:

Year: 1986

Abstract

Author(s)

Bell, M.C.