Site navigation:

ECOFACT ECOFACT | Fishway and Fish pass Design | Rock ramps | Eel Passes

The category page

Fish Pass Design and Research

An increased requirement for the provision of suitable fish passage for salmonids and lamprey species has led ECOFACT to explore this issue in greater detail, with specific reference to a number of projects being undertaken by the company. This has arisen as a function of rehabilitation works following instream disturbance, as well as providing consultancy and design recommendations for major instream flood defence schemes and alterations to existing weirs, which are currently acting as a barrier to fish passage into suitable catchments. We now offer a fish pass design service.

fish-pass eel-video Eel-Brush-Pass
glass-eelds River Shannon rock-ramp
  • ECOFACT have contributed to fish passage requirements on small hydro-electric energy schemes and water supply schemes where abstractions may potentially affect flows. However, the most significant fish passage issues being addressed involve passage of Annex II listed lamprey species and Atlantic salmon over retained structures in some of Ireland’s largest rivers.
  • ECOFACT have explored new technologies to allow lamprey to pass currently impassable barriers and are hoping to see an increase in recognition of fish passage issues at a national level.

For more information on the fish pass designs we have prepared and output of these projects please contact

Current News Stories:

  • Bats surveys for wind turbines – new guidance

    Scottish Natural Heritage (SNH) published new guidance in January 2019 for bats surveys at wind farm sites. These new guidelines are entitled “Bats and onshore wind turbines – survey, assessment and mitigation”. The document incorporates findings from the latest research on the impact of wind farms on bats.  It is endorsed by all the statutory […]

    Continue Reading
  • Non-volant mammal surveys 2019

    We are one of the leading companies in Ireland providing mammal surveys and assessments. We provide expert advise on both bats and terrestrial non-volant (i.e. non-flying) mammals. We undertake surveys for all terrestrial non-volant mammal species in Ireland, including Badger, Otter, Red Squirrel, Pine Marten, and non-native American Mink, among others. Our staff are fully […]

    Continue Reading
  • Filming a documentary on Sea Lampreys

    We were delighted to work recently with BBC Earth on a documentary on Sea Lampreys Petromyzon marinus. The filming took place during early-June 2017 on the old River Shannon at Castleconnell, Co Limerick. This is part of the Lower River Shannon Special Area of Conservation, and Sea Lampreys are a key conservation interest of this […]

    Continue Reading
  • Major new book – Wildlife and Wind Farms

    A major new book will be published in May 2017 entitled ‘Wildlife and Wind Farms: Conflicts and Solutions’. Volume 1 of this book includes a chapter prepared by Ecofact Principal Ecologist Dr. William O’Connor. The two-volume set provides a comprehensive overview of the interactions between wind farms and wildlife, each volume dedicated to one of the two […]

    Continue Reading
  • Surveying wintering birds in the Irish Midlands

    Our staff are currently undertaking a number of wintering bird surveys in the Irish Midlands. Here we have provided some photos and videos from bird surveys we undertook during December 2015. Our bird surveys are undertaken to inform both the Environmental Impact Statement (EIS) and Natura Impact Statement (NIS) reports being prepared for proposed wind energy […]

    Continue Reading

Photo Gallery

View More >>

Site Search