New boom but no further progress with elver trap
I visited the elver trap at Ardnacrusha hydroelectric station on the Lower River Shannon in September 2017. The promised upgrades to the trap were never completed this year by the…
Striving for sustainable management of Ireland's great river
I visited the elver trap at Ardnacrusha hydroelectric station on the Lower River Shannon in September 2017. The promised upgrades to the trap were never completed this year by the…
World Fish Migration Day is a particular relevant day for the River Shannon; a river with numerous fish passage issues – both due to the presence of the ESB’s dams…
A new study just published shows that salmon runs on Shannon are less than five percent of what they should be. This is due to the impact of ESB dams. Essentially the salmon…
The Lower (old) River Shannon downstream of Parteen Regulating Weir is usually provided with a ‘compensation’ flow of just 10 m3 sec-1 (cumecs). However, during the winter of 2015/16 flows in the…
We are currently assessing silver eel turbine passage mortality at Ardnacrusha hydroelectric station on the Lower River Shannon. Silver eels are adult maturing eels on their spawning migration to the…
Ireland’s hydroelectric power stations are widely considered to be a sustainable source of ‘green’ energy. But is this really true? As we approach the centenary anniversary of the opening of Ireland’s…
These are some photos of Ardnacrusha hydroelectric station taken on the morning of the 24th November 2014. In addition to the four turbines being on full load, water was also being…
Rivers across Europe are currently experiencing a phenomenal increase in the runs of juvenile eels, or elvers. The numbers that have arrived into rivers such as the River Severn in…