fishways

Dams cause major habitat loss for freshwater and riverside species, and also create barriers for migratory fish species (also a result of ineffective fishways) and facilitate exotic species introductions.

Biodiversity 100: actions for Australia Guillaume Chapron 2010

In due course it became evident that natural fishways -- to choose one example -- were being obstructed to the disadvantage of both the fish and navigation.

The Bounty of the Chesapeake Fishing in Colonial Virginia James Wharton

Options could include replacing or retrofitting older fishways with newer technologies, increasing the number of passage devices, performing trap-and-transfer of shad and altering water flow, Mr. Shiels said.

NYT > Home Page By DEBORAH WEISBERG 2011

Shad numbers on the Susquehanna in the past decade alone have tumbled from 600,000 in one year to a record low of 19,000, largely because fishways approved in the last licensing period have been ineffective, Mr. Shiels said.

NYT > Home Page By DEBORAH WEISBERG 2011

But government agencies have footed the bill for many projects including the concrete fish ladders and fishways to help the steelhead get around dams and other structures.

The Seattle Times 2010

The work to save the species has led to about a dozen concrete fishways at a cost of more than $16.7 million.

Home By NOAKI SCHWARTZ 2010

The work to save the species has led to about a dozen concrete fishways at a cost of more than $16.7 million.

Home By NOAKI SCHWARTZ 2010

The project is the latest, yet far from the most unusual, steelhead recovery attempt by government agencies that have spent millions of dollars on concrete fish ladders, cameras, fishways and other contraptions to allow seagoing trout to spawn in Southern California streams.

Home By NOAKI SCHWARTZ 2010

The work to save the species has led to about a dozen concrete fishways at a cost of more than $16.7 million.

The Seattle Times 2010

The project is the latest, yet far from the most unusual, steelhead recovery attempt by government agencies that have spent millions of dollars on concrete fish ladders, cameras, fishways and other contraptions to allow seagoing trout to spawn in Southern California streams.

Homepage 2010