Tag Archives: estuary

A threat to an existing navigation

I have a page here about the River Maigue, one of Ireland’s oldest improved navigations. Incidentally, the river’s name is locally pronounced Mag, to rhyme with bag.

In 2009 I wrote to the Powers That Be to suggest that the (much to be desired) bypass of Adare, a major bottleneck on the N21 Limerick–Tralee/Killarney road, should pass to the south of the town, thus avoiding the interference with the navigation that would undoubtedly have resulted from a northern bypass. It was no doubt the strength of my case, and a recognition of the importance of the navigation, that caused the Powers to opt for a southern bypass. A proposed link to a proposed M20 Limerick–Cork motorway may have been a minor factor in their decision: as nobody was going to build a motorway to Kerry, Adare would piggyback on the motorway to Cork.

However, An Bord Pleanála overturned the decision [PDFs available here] because the M20 proposal was withdrawn. The Irish Cattle and Sheep Farmers’ Association is pleased because it wanted a northern bypass of Adare, to be linked to a new road from Limerick to the port of Foynes; its submission on the matter is here [PDF]. A Limerick ICSA chap has a letter to the editor about the Foynes link in the current issue of the Limerick Leader, although it’s not yet available online.

Now, this proposal has the drawback that it might actually be slightly sensible: a better road to Foynes might stop people agitating for a restoration of the railway line and enable a speedy ending of port activities in Limerick, thus removing large piles of scrap from the riverside. But have the ICSA not considered the damage to the turf-boat traffic to Adare if a road bridge is added to the railway bridge downstream of Adare?

Draining Lough Derg

The ESB is currently letting more water down the old course of the Shannon, from Parteen Villa Weir through O’Briensbridge, Castleconnell and the Falls of Doonass. This channel gets the first 10 cubic metres per second from the Shannon; the next 400 go through Ardnacrusha and anything left over is sent down the old course.

The result is to help to reduce the water level on Lough Derg while raising it on the old course.

The footbridge in Castleconnell at normal summer level in 2002

The footbridge in Castleconnell at normal summer level in 2002

The footbridge on 1 January 2014

The footbridge on 1 January 2014

Before Ardnacrusha was built, the old channel took the entire flow of the Shannon, so it can take more than it has now.

The footbridge in the floods of November 2009

The footbridge in the floods of November 2009

The level is still below that of 2009, when the land around the old channel flooded in several places. But much land is waterlogged: I saw yesterday that the upper reaches of the Nore, the Barrow and other rivers were in flood. And more rain is forecast.

Wouldn’t it be nice if some of that could be sent to Dublin instead? I see that some folk claim (on what looks like a website that hasn’t been updated for a while) that the evil Dublin folk want to extract 350 million litres of water from the Shannon every day; the original idea was to take it from Lough Ree but now it seems that Lough Derg is the preferred source.

Now 350 million litres sounds like a lot, but it’s 350 000 cubic metres per day, 14 583.3 per hour, 243.05 per minute, 4.05 per second, which is less than 1% of normal flow through the two channels draining Lough Derg. There’s a lot more at the moment, and the good citizens of Dublin are welcome to come down and fill their buckets. I suspect that Clare TD Michael McNamara has got things out of proportion.

Addendum: 350 million litres per day, over a lake whose area is 130 square kilometres, would lower the level of the lake (if my calculations are correct) by 2.69 millimetres. If no water entered the lake, the level would be down 983 mm after a year, ignoring evaporation and other abstractions and assuming that the Shannon and other tributaries no longer flowed in and that there was no rain.

Ballylongford man’s posthumous honour

Herbert Kitchener, born in Ballylongford near Saleen in 1850, shortly after the Shannon Commissioners completed their work, is to appear on a new UK £2 coin.

Ballylongford (and Inishmurray/Cahircon)

SHANNON-RIVER. This is by far the most considerable river in Ireland, or perhaps in any known island, not only on account of its rolling 200 miles, but also of its great depth in most places, and the gentleness of its current, by which it might be made exceedingly serviceable to the improvement of the country, the communication of its inhabitants, and consequently the promoting inland trade, through the greater part of its long course, being navigable to a considerable distance, with a few interruptions only of rocks and shallows, to avoid which there are in general small canals cut, to preserve and continue the navigation.

Thus Wm Wenman Seward, Esq [correspondent of Thomas Jefferson], in his Topographica Hibernica; or the topography of Ireland, antient and modern. Giving a complete view of the civil and ecclesiastical state of that kingdom, with its antiquities, natural curiosities, trade, manufactures, extent and population. Its counties, baronies, cities, boroughs, parliamentary representation and patronage; antient districts and their original proprietors. Post, market, and fair towns; bishopricks, ecclesiastical benefices, abbies, monasteries, castles, ruins, private-seats, and remarkable buildings. Mountains, rivers, lakes, mineral-springs, bays and harbours, with the latitude and longitude of the principal places, and their distances from the metropolis, and from each other. Historical anecdotes, and remarkable events. The whole alphabetically arranged and carefully collected. With an appendix, containing some additional places and remarks, and several useful tables printed by Alex Stewart, Dublin, 1795. [Google it if you want a copy.]

Seward was one of many people who saw the Shannon as a valuable resource, even if they were vague on how it was to yield a return. I was reminded of that on reading the Strategic Integrated Framework Plan for the Shannon Estuary 2013–2020: an inter-jurisdictional land and marine based framework to guide the future development and management of the Shannon Estuary. The Introduction includes this:

The Shannon Estuary is an immensely important asset and one of the most valuable natural resources in Ireland and the Mid-West Region in particular — the fringe lands and the marine area both provide space and location for development, activities and opportunities to progress economic, social and environmental growth within the Region.

This report is an attempt to show how the estuary could deliver a return. The core point seems to be that a small number of areas are designated as “Strategic Development Locations for marine related industry and large scale industrial development”, thus protecting them from the attentions of the environmentalists: the whole of the estuary is a Special Area of Conservation and a Special Protection Area.

Almost all the Strategic Development Locations are already industrialied in some way:

  • Limerick Docks (in Limerick city)
  • Ballylongford (of which more below)
  • Tarbert (power station)
  • Aughinish Island (alumina)
  • Askeaton (Nestlé)
  • Foynes Island and land to the rear of Foynes (main port on the estuary)
  • Moneypoint (power station).

There is one more, Inishmurry/Cahircon (which is not boring), which is even more interesting because there is no industry there at present. It was used as a resting place for certain vessels, but it was also proposed as the site for an explosives factory. Perhaps the designation as a Strategic Development Location suggests that that proposal is not dead but merely sleeping.

Ballylongford is equally lacking in industry, despite activity at Saleen in the early nineteenth century. However, Shannon Development assembled a large landbank nearby; the report’s Executive Summary says:

The Ballylongford Landbank benefits from a significant deepwater asset and extant permission for a major LNG bank.

Here is the area in question. Note that the red oval is just to indicate the rough location; it does not show the boundaries of the landbank.

Ballylongford (OSI ~1840)

Ballylongford (OSI ~1840)

You can see a proper map and a marked-up aerial photo in Volume 1 of the report [PDF] on page 73 (77/174).

Shannon Development agreed to give a purchase option on a little uder half of the site to Shannon LNG Ltd, which proposed to build a liquefied natural gas terminal there, to be supplied by ship; much information is available here.

The Commission for Energy Regulation decided to introduce charges that would have increased Shannon LNG’s costs; the company took the matter to court but, yesterday, lost its case. The Irish Times report here will probably disappear behind a paywall at some stage; the Irish Independent report is here and the Limerick Leader‘s here (its photo shows Tarbert and Moneypoint; the Ballylongford site is off to the left).

If the Ballylongford development does not proceed, plans for economic growth on the Shannon estuary may prove to be for the birds.

My OSI logo and permit number for website

Another tour-Limerick-by-water idea …

… but this one, unlike the rest, might actually make financial sense: it uses existing infrastructure, it probably has a low capital requirement (as the firm presumably already owns the kayaks) and it seems to offer the prospect of extra income, without much extra cost, in the off-season, with low fixed costs. Furthermore, it covers the more scenic parts of the city: the Park Canal is not, alas, one of them when seen from water level, because the banks are so high you can see nothing else.

The Limerick Post covered the venture here.

No queue for the quay …

… at Querrin on the Shannon Estuary. The page discusses its building and the early years of its operation.

Ardnacrusha

A press release just in from Waterways Ireland:

Waterways Ireland Change Advice on Travel into Limerick

Waterways Ireland is changing the advice on travel from Ardnascrusha into the Limerick Navigation due to a new service available from the ESB which provides real time information on the output from the turbines.

Boaters are advised not to travel on the Ardnacrusha to Limerick Navigation if the output from Ardnacrusha is above 20 Megawatts. The previous advice advised boaters not to travel if one turbine was operating; 1 turbine is equivalent to 20 megawatts.

The new service offers real time information on the megawatt output of Ardnacrusha by phone (tel 087-6477229) and is available 24hrs a day. Boaters are advised to contact the ESB phoneline for information on the output when making travel plans. In the event of a line failure in the real time information number, boaters can call the main Ardnacrusha number 087-9970131 for the megawatt information as well as any other information required for travel through Ardnacrusha.

This new information service is an improvement in safety for mariners who travel on the Ardnacrusha to Limerick Navigation.

Update 2018: that was in 2013. Much better information is now available here.

Up with this sort of thing

Folk interested in the history of the Shannon before 1850 may like to know of a talk …

The smart green technology of the 1830s: the Shannon steamers and the definition of Ireland

… to be delivered to the Thomond Archaeological and Historical Society on Monday 4 November 2013. It’s in Room T.1.17, TARA Building, Mary Immaculate College, Limerick, at 8pm.

A related topic …

Charles Wye Williams and the Anglo-Irish Trade

… will be discussed in one of the papers at the Eighth [British] Waterways History Conference on Saturday 26 October 2013 at the University of Birmingham. Leave a Comment below if you would like contact information for the conference.

Shannon passage times 1838

Estuary

Kilrush to Limerick 4 hours

Tarbert to Limerick 3 hours

Clare[castle] to Limerick 3.5 hours

Limerick Navigation

Limerick to Killaloe:

  • iron passenger boat 2.5 hours
  • timber passenger boat 3.5 hours
  • trade boat 6 hours.

Shannon

Killaloe to Portumna:

  • passenger steamer 6 hours
  • steamer towing lumber boats 8 hours.

Portumna to Shannon Harbour:

  • 6 hours.

Shannon Harbour to Athlone:

  • 8 hours.

Source: Railway Commissioners second report Appendix B No 6.

Two brief notes about eels

Fr Oliver Kennedy, of the Lough Neagh Fishermen’s Cooperative Society, which ran the eel fishery [PDF], has died at the age of 83.

The ESB eel-catching apparatus at Killaloe Bridge is being renewed (and not, as I feared, removed). Eels are caught now only to be transported around Ardnacrusha. Read about the fishery here and, at greater length, here.