This gallery of photographs shows Parteen Weir and environs on the Lower River Shannon. All photos were taken on the morning of the 8th February 2014 when a discharge, significantly in excess of the compensation flow, was being spilled (likely to be well over 200 cumecs). The usual flow (the compensation flow) released from this weir is only 10 cumecs. There are also photos of the headrace canal which leads to Ardnacrusha Hydroelectric Station, and also the gates that regulate water entering into the headrace canal. There are also some photos of the Old River Shannon between Parteen Weir and O’Brien’s Bridge. Click on any of the photos below to activate the gallery.
There is also a photo of apparent inappropriate storage by ESB of what looks like cement bags and oil drums within the SAC boundary – in an area that is at risk of flooding.
Parteen Regulating weir is a major barrier to fish migration on the River Shannon, and the compensation flow usually released from here is insufficient to meet the requirement to maintain good ecological status on the Old River Shannon. The Old River Shannon Research Group is campaigning for a review of both fish passage facilities and water management at this weir.The salmon hatchery at this site (which can be seen at the far side of the river) has been a failure; despite the millions of fish released from here into the upper Shannon current salmon escapement into the Shannon upstream from here is less than 5% of its conservation target.
For further information on Parteen Weir see these articles we have recently written regarding this weir.
In particular see this page:-
Also, other sources with information regarding this site can be found at the following links:-
The spilling of water at the moment, and in previous weeks, has hopefully helped some of the outmigrating silver eels pass safely out to the sea, rather than have to be subjected to turbine passage mortality at Ardnacrusha. We would hope that if this water spilling continues that some kelts (salmon that have spawned) can also pass downstream. As we have noted before, there are no fish passes for eels, salmon smolts or kelts travelling downstream on the River Shannon. However, it is also clear from the photos above that there are likely to be pressure changes and potential for other physical impacts for any eels or salmon passing at such speed under this gate. Spilling water like this may therefore provide no significant fish passage benefits. Over the last 80 years the insufficient 10 cumec compensation flow has caused channel encroachment reducing conveyance capacity on the Old River Shannon, and this is contributing to the current flooding. This water is also being joined by the 350-400 cumecs that is being released at Ardnacrusha at the moment and floods from the Kilmastulla, Mulkear and Blackwater rivers. With the current weather forecast looking poor flooding, and risk of further flooding, is a significant ongoing current problem for the Lower River Shannon.