Category Archives: Waterways management

Royal Canal drawbridge

According to the Freeman’s Journal of 5 April 1837, Henry Garnett was

superintendent or agent to the èxtensive and highly respectable firm of Purcell and Jameson, coach proprietors.

Their offices were in Sackville Street. On Sunday 2 April 1837 Mr Garnett had been on his way home to [Royal] Canal Terrace when

as he ascended the hill at the bend of Upper Dominick-street he met a man habited in a dark cloak, and having a cap on his head, who, after looking him steadfastly in the face, opened the cloak, and fired at him.

The man was not more than a yard away, so close that the powder scorched Garnett’s hand, but the bullet struck a suspender button, wounding but not killing the victim.

The scene of the crime

The scene of the crime [OSI ~1840]

William Cagburn heard the shot and also heard Garnett calling out

I am shot — stop the murderer, he has run in the direction of the aqueduct.

Cagburn gave chase:

He instantly pursued, crossed the draw-bridge, and came under the aqueduct, when he saw the prisoner running along the Phibsborough road.

Cagburn and the watchman seized the man; the watchman took two pistols from him and another witness found a third, discharged, pistol nearby on the pathway.

The prisoner, Christopher Clanchy, had been a road maker for eight years. The Freeman’s Journal said:

While a contractor for repairing part of the Ashbourne road, in the employment of Messrs Bourne, he [Clanchy] was allowed to travel free by Mr Purcell’s coaches, and Mr Garnett in the discharge of his duty having occasion to withdraw this privilege, hence proceeding his desire to be revenged. […] We are happy to state Mr Garnett is not likely to suffer any inconvenience from the injury.

But of more interest for this site is the route taken by William Cagburn. What or where was the drawbridge he crossed?

Foster Aqueduct

Upper Dominick Street and the Foster Aqueduct [OSI ~1840]

I haven’t come across [or at least I haven’t noticed] any previous mention of a drawbridge in this area. I presume that it was across the canal. And, looking closely at the map extract above …

Possible site of drawbridge

Possible drawbridge [OSI ~1840]

… I see what might be a bridge just to the left of the F of Foster. It shows up more clearly on the black and white OSI map. At Clanchy’s trial before the Commission of Oyer and Terminer, reported in the Freeman’s Journal of Monday 26 June 1837, the bridge was said to be a wooden bridge; George Cayburn [probably the William Cagburn named in the earlier report] described it as “the swinging bridge”.

Perhaps Mallet’s Insistent Pontoon merely replaced an old nuisance with a new.

Clanchy, incidentally, was found guilty: there were suggestions that he was insane, but the jury rejected them. Baron Richards said [Freeman’s Journal 1 July 1837]

The court had no discretion but to pass the extreme sentence of the law, that he should be hanged by the neck […].

Purcell, Garnett’s employer, had requested a commutation of his sentence; Richards said that it was open to Clanchy to memorial for a commutation, and the court would put no obstacle in his way; indeed it hoped he would meet the mercy “which he would have denied his intended victim”. I do not know what happened to Clanchy.

Update December 2016

The Warder and Dublin Weekly Mail of 26 September 1835 mentions the bridge:

Monday night a respectable looking elderly man fell into the Royal Canal Basin, at the Broadstone, on the Dominick-street side, within a few yards of the draw bridge.

A canal employee called Keybourne hauled Mr White out within a few minutes, but he was DOA at the Richmond Hospital.

This seems to confirm that the bridge was moveable and was where the OSI map suggests.

From the BNA

My OSI logo and permit number for website

The Black Bridge at Plassey

I am repeating here a point I made in response to a comment on this page. I do so because the point is, I think, an important one: some readers don’t check the comments and might miss this.

I have an imperfect copy [with some lines missing] of an indenture made on 8 July 1949 between the Minister for Finance and Limerick County Council under which the Council leased from the Minister

… all that those parts of the lands of Garraun and Sreelane on which Plassey Bridge abuts on both banks of the River Shannon and the site and piles of said Plassey Bridge together with said Plassey Bridge […].

I am not a lawyer, so my interpretation may be misleading, but I think that there are two points of interest.

The first is that, under the indenture, the Council is obliged to “well and sufficiently repair cleanse maintain amend and keep the hereby demised premises”, which includes the bridge. The Council is also required to “use the said demised premises as a public highway”.

The second is that, if the Council fails to do so, the Minister, and his agents the Commissioners of Public Works in Ireland, are entitled (after giving due notice) “to enter upon the hereby demised premises and to execute and to do the necessary repairs and works and the Lessees [ie Limerick Councy Council] shall repay the expenses of such repairs to the Lessor on demand […]“.

As far as I can see, Limerick County Council is in breach of its agreement with the Minister for Finance, and that Minister is entitled to repair the bridge and charge the Council for the cost.

If only there were a Minister for Finance who had an interest in Limerick (or in bridges) ….

A little rain goes a long way

Here are some water level readings from Athlone Weir. I’ve taken them from the OPW’s very useful water levels site, where you can monitor levels from the comfort of your own armchair. [If only there were a gauge at Killaloe ….]

At Athlone, staff gauge zero is 35.360m above Poolbeg datum (from 18 Oct 2003). I chopped the bottoms off the first two graphs. The first one shows the level for 35 days to 30 September 2014; I presume that the level of Lough Ree was being reduced to enable it to hold some of the autumn’s rainfall.

Athlone Weir 20140930

Athlone Weir 35 days to 30 September 2014 (truncated)

Here’s the graph for the 35 days to 15 October 2014.

Athlone Weir 20141015

Athlone Weir 35 days to 15 October 2014 (truncated)

Then, in October, the level began to rise again. By 30 October, it was back to about 2.1 metres, roughly the starting point on the first of the graphs above.

Athlone Weir 20141030

Athlone Weir 35 days ro 30 October 2014

And since then it has continued to rise.

Athlone Weir 20141117

Athlone Weir 35 days to 17 November 2014

Met Éireann’s weather summary for October 2014 [PDF] has this chart:

Met Eireann weather Oct 2014

Met Éireann rainfall October 2014

It says:

Rainfall: wet conditions nearly everywhere

Monthly rainfall totals were above-average nearly everywhere with the exception of stations in coastal areas in the Northwest and West and in parts of the Midlands. Percentage of Long-Term Average (LTA) values ranged from 81% at Gurteen to 161% at Johnstown Castle, which recorded it wettest October since 2002.

Fermoy (Moore Park) reported 135% of its LTA with 153.6 mm and its wettest October in 10 years. The wettest days were mainly the 3rd, 5th and 28th, with the month’s highest daily rainfall reported on the 5th at Cork Airport with 38.6 mm, its wettest October day in five years. Mullingar reported its wettest October day in 12 years on the 28th with 26.4 mm. The number of wet days (days with 1 mm or more rainfall) ranged from 12 at Casement Aerodrome to 24 at Valentia Observatory and Claremorris, with Claremorris reporting its highest number of October wet days since 1973.

Use of the OPW charts is licensed under Directive 2003/98/EC [PDF] of the European Parliament and of the Council on the re-use of public sector information. Met Éireann allows use of “the web pages, and the information contained within them, for private and non-commercial purposes, for teaching, and for research […] is allowed subject to the condition that the source of the information is always credited in connection with its use”.

 

 

Airholes on the Kennet & Avon Canal

John Ditchfield very kindly photographed some airholes on the Kennet & Avon Canal and sent on the photos. The captions are his comments.

Bath05_resize

Good length of overflow. Water flowing.

Bath07_resize

No overflow.

Bath06_resize

(Rebuilt) small openings are above the level of the top of the adjacent lock gate. However, just upstream there is another paddle or sluice gate on the canal side (next photo), so perhaps that is used to control the level.

Bath08_resize

The upstream paddle or sluice gate.

Bath09_resize

Overflow in action, preventing water overflowing gates.

Note: this lock connects the canal with the River Avon, and the building in the background was a steam pumping station, presumably for topping up the canal from the river.

Many thanks to John for taking the trouble.

Willie Penrose notices the cuts

It is nice to know that at least one politician has spotted the most important issue affecting Waterways Ireland. Here’s what the minister told him about the 85% of WI’s current budget that comes from her department:

Funding allocated to Waterways Ireland 2011-2014
Year €m
2011 €30.300m
2012 €27.099m
2013 €25.463m
2014 €24.183m

Now, Willie, ask her how much of each year’s allocation is gobbled up by pensions.

 

The agency model

I have been told that, until recent years, travel agents in Germany and elsewhere would buy packages of weeks on Irish hire-boatsa and then sell them on to their own clients. I have also been told that this “agency model” ceased to be used [or became less used], perhaps because of the growth of internet booking. And it has been suggested that this was one of the factors in the decline of the Shannon hire-boat trade, to which I have repeatedly drawn attention [most recently here].

I do not know whether this phenomenon has been documented or formally studied. If it has, I would be grateful if any reader can point me to the documents or studies. I would also welcome other Comments on the proposition.

Packaging and marketing

I mention it now because, when launching the Shannon Blueway project, the waterways minister Heather Humphreys said:

The launch of the Blueway will allow local businesses [to] capitalise on an increase in demand for transport, equipment hire, accommodation and entertainment.

I think that the Blueway is an excellent idea, but I am concerned about whether small local companies will be able to package and market it effectively to overseas tourists. If the long-established cruiser-hire-firms were or are finding effective marketing difficult, why would (say) a canoe- or bicycle-hire-firm in Drumshanbo find it any easier?

Marketing to anglers

There was an interesting discussion at the Joint Oireachtas Committee on Transport and Communications about “Depletion of Inland Fish Stocks and Impact of Estuary Poaching: Inland Fisheries Ireland” on 22 October 2014. Note in particular the contributions of Dr Ciaran Byrne from 10:25 onwards about how Inland Fisheries Ireland markets Irish angling to overseas anglers.

What struck me was not that IFI uses any particularly magical marketing methods but that it is dealing with a well-defined interest group: people who are committed to a particular activity and have invested heavily in it (buying rods and stools and nets and umbrellas and maggots and whatever else anglers use).

Identifying potential customers

Anglers form one segment of the market for inland waterways holidays, but the task of selling to other segments is harder if they lack a single compelling interest. Hence, no doubt, those rather demented attempts by Fáilte Ireland or Tourism Ireland to categorise potential customers as ‘Sightseers and Culture Seekers’, ‘Family & Loved Ones’, ‘Relaxers’ and ‘Outdoor Actives’. None of their interests strikes me as being exactly compelling: there are several countries where you can relax, engage in outdoor activities or look at sights.

What you really need is obsessive customers: folk, with money to spare, who are really interested in one thing. Then you entice them to your area and take their money from them: not, as Brian Ború would have done, by hitting them over the head and stealing it, but by selling them overpriced goods and services.

Lough Derg

If you don’t have obsessive customers, who are compelled by their inner urges to dangle maggots in your waters (or whatever else turns them on), then you might try offering a compelling attraction: something that is so interesting that folk put it on their to-do lists. Unfortunately, as Fáilte Ireland’s Lakelands Lough Derg Roadmap [PDF, 6.7MB; well worth reading] admits,

Lough Derg does not have suffient key attractions that act as a draw to the area.

The same thought has often struck me. As you drive around the lake, you see signs pointing towards it. But suppose you’re a casual tourist who hasn’t already booked an activity. When you get to the lake, about the only thing you can do is look at the water (which becomes less interesting after a while) or at the jolly people enjoying themselves on boats (ditto).

You can, in some places, go to a pub or eatery, but you don’t need to come to Ireland to do that. Or you can paddle. If you fish, you can fish, but I’m trying to think of things for non-anglers. In Killaloe, you can take a boat trip; in Dromineer, you can hire a sailing boat; in Mountshannon, you can visit Holy Island. But there is nothing you would come to Ireland for: nothing you can’t do in other places.

Roadmap remedies

The Roadmap proposes these remedies:

The following three key tourism products are proposed:

  • A Discovery Point and Trailhead at the Portroe lookout
  • A Lough Derg Canoe/Kayak trail
  • An enhanced offering and facilities at University of Limerick Activities Centre (ULAC).

Two additional tourism products are proposed:

  • Portumna eco-park (masterplanning required)
  • Publications to promote and support active enjoyment of Lough Derg and surrounds.

There is, alas, another set of categories of potential visitors:

The three market segments identified with the best potential for delivering international visitors to Lough Derg have been identified as Curiously Cultural, Great Escapers and Nature Lovers.

Other, less exploitable, market segments are identified too, but I can’t bring myself even to name them.

Finding the punters

I’d hate it to be thought that I was a marketing expert, but it seems to me that this segmentalisation is coming at things from the wrong end. In effect, it’s saying “We have these things; what sort of person might be induced to buy them?” Then you give each of those sorts of person a category and say that you’ve found your market.

But compare that with what the fisheries folk do. They can identify magazines that anglers read, maybe (for aught I know) television programmes they watch, trade shows they visit. Identification is easy: the titles will include words like “fishing” or “angling”.

But what magazines — other than those on the top shelf — have “Curiously Cultural” or “Nature Lovers” in the title? How do you track down “Great Escapers”? It seems to me that these categories might help you to tailor a message that is broadcast to large audiences through mass media: in such cases it doesn’t matter if you appeal to only 1% of the audience, provided that that audience is large enough. However, that’s not an option available to those with small budgets: they need cheaper marketing through channels that will provide much higher returns.

Small operators

And that’s where we come back to the fact that most of the potential tourism operators around Lough Derg are pretty small. Who is going to put together packages of activities that will appeal to the curiously cultural? I’m interested only in filling my B&B and you’re interested in hiring out bicycles. I’m happy to refer customers to you and vice versa, but are we going to get together to provide packages and to share our marketing budgets? There is a Lough Derg Marketing and Strategy Group, but it seems to be dominated by representatives of public sector bodies, and there is a limit to what they can do.

To compete on a European scale, what’s really needed is a large commercial organisation. I suggest, therefore, that the best thing to do would be to get Goldman Sachs to advise on how Lough Derg might be privatised.

Second-best would be the formation of a tourism cooperative.

 

 

 

 

 

 

Royal Canal water supply

On 26 November 2012 I noted that

The Royal Canal water supply applications have been approved by An Bord Pleanala. There were two separate applications […] but they were in effect treated as one.

There were conditions attached, but I concluded that

If I remember correctly, the amount of water available from Lough Ennell will not always provide enough (eg in a dry season) to keep the canal full. Still, this is a significant advance for Waterways Ireland and for Royal Canal enthusiasts.

So here we are, almost two years later, and the work of providing a supply from Lough Ennell to the Royal Canal, reckoned to be about a five-month job, has doubtless been long completed, no?

No.

The work has not yet started and Waterways Ireland will be lucky if it gets done within the next year.

As I understand it — and if, Gentle Reader, you have more information, do please leave a Comment below (your name can be kept out of public view if you like) — there are three sources of delay:

  • first, I understand that there is a technical issue about one of the conditions attached to the approval; it is felt that the condition is unworkable, but that getting it changed might take some time. I presume it’s one of the conditions 2(a) to 2(d) that I quoted two years ago and, looking at the proposed orders published in the press [PDF], I suspect it might be the requirement to maintain the lake level at or above 79.325 mOD Malin Datum. However, I don’t really know
  • second, Waterways Ireland took over Clonsingle Weir, at the outlet from Lough Ennell, by Compulsory Purchase. Owners of mills, who generate electricity from the Brosna, have submitted claims for compensation. I understand that an arbitration hearing, lasting four days, is scheduled to be help in May 2015
  • third, responsibility for the scheme has moved from Westmeath County Council to Irish Water. Which may have other things on its mind.

Irish Water has published its proposed Capital Investment Programme [PDF] but Appendix 1, the Investment Plan Project Summary, is in a separate file [PDF]. Category B is headed Review Scope and Commence Construction and it includes

Mullingar Regional Water Supply Scheme (G) … Lough Ennell Abstraction.

I can’t work out what “(G)” means. A few items are so marked; a few others are marked “(H)”; most items have neither.

The Capital Investment Programme [CIP] document says:

 The CIP is dominated by contractual commitments entered into previously by Local Authorities, and which have now transitioned to Irish Water. In the 2014-2016 period, Irish Water will fund these contracts to completion and bring forward programmes and prioritised projects to commence. At the same time, it will progress a large portfolio of projects that are at the planning and design stage, reviewing their scope, budgets and, where appropriate, timing to favour maximising the performance of the existing assets through intensified capital maintenance that might allow deferral of major capital investment.

Emphasis mine. So that raises the possibility that Irish Water will decide not to fund the abstraction scheme but will rather opt to pay for continued pumping.

It is, of course, quite possible that I have misunderstood these difficult matters, so I will be glad to hear from anyone with better information.

Incidentally, reviewing Irish Water’s documents suggests to me that there are people there who know what they are doing and who have the expertise to manage large and complex operations. That differentiates them from the politicians in government and opposition, few of whom (as far as I can see) have any experience of running anything more complex than a parish social.

 

 

DCAL

What is the top priority of the Northern Ireland Department of Culture, Arts and Leisure?

Is it to promote culture?

No.

To promote the arts?

No.

To promote leisure?

No.

It is

… to promote social and economic equality and tackle poverty and social exclusion.

Ne sutor ultra crepidam?

 

Airholes

My attention was recently drawn to an article [PDF] by Mike Clarke about airholes.

The article is in Clogs and Gansey, the newsletter of the Leeds & Liverpool Canal Society, of which Mike is Founder and President. He is an extraordinarily knowledgeable person and it is well worth while looking around his website: for instance, there’s some material of Irish interest here, a list of publications here and material about the Leeds & Liverpool Canal here including a really excellent document about locks [PDF].

But back to the airholes.

Not being an engineer, or at all technically competent, I’m always reluctant to try explaining these mysteries, so I’ll welcome corrective Comments from any more technically-minded folk.

Water levels

If the water level on the upstream side of a lock gate is higher than that on the lower, the gate will be difficult to open. If the gate is the tail gate [bottom or lower gate] of a lock, you can raise a rack [paddle] and allow water to flow from the upstream side, which is the chamber of the lock, to the downstream side, thus making a level and allowing the gate to be opened easily.

If the gate is the breast gate [head or upper gate] of a lock, the same applies: you can lift a rack [paddle] in the upper gate, allowing the excess water to flow into the lock chamber.

However, the relationship between the heights of the two gates (or pairs of gates) then becomes important: if the breast gates are higher than the tail gates, the water level in the lock chamber will not be able to reach the height of the water above the lock (at least until you’ve drained down the entire level [pound] back to the next lock upstream).

But for efficient operation, you want to reduce the amount of adjustment that has to be done after the boat reaches the lock but before it can enter the lock chamber. You want a system that is, as far as possible, automatically self-adjusting. That means, in particular, one that ensures that the level of water above the lock is not too high.

Byewashes

On many English canals, that is done by using byewashes.

Byewash on the Huddersfield Narrow Canal (E) at Marsden

Byewash on the Huddersfield Narrow Canal (E) at Marsden

As far as I know, though, few Irish canal locks have them, and I have heard British boaters comment on their absence. If memory serves, the canal (Leitrim) end of the Shannon–Erne Waterway does, but I have no suitable photo. I should confess that I have no idea what proportion of Irish and English canal locks are so equipped; I will be glad if anyone who can supply, or point to, the information will leave a Comment below.

Airholes

Mike Clarke’s PDF article, to which I pointed at the top of this page, provides a possible explanation for the absence of byewashes on Irish canals. He says that airholes were used instead on canals “built or influenced” by William Jessop. Jessop worked on the Grand Canal as assistant to John Smeaton from 1773 and was consultant engineer to the Grand Canal Company until 1802 [Ruth Delany The Grand Canal of Ireland David & Charles, Newton Abbot 1973].

Mike Clarke also says that Jessop trained John Killaly: Killaly joined the Grand Canal Company in 1794 and became its engineer in 1798 [Delany op cit]; furthermore, his designs were used on the Royal Canal from Coolnahay to the Shannon [Ruth Delany and Ian Bath Ireland’s Royal Canal 1789–2009 The Lilliput Press, Dublin 2010].

If I’ve understood Mike Clarke’s article correctly, the airhole system uses the channel for the ground paddle [land rack] sluice instead of building a separate byewash channel. From his photograph, I gather that there is a separate letterbox-like slot in the recess for the rack mechanism: I presume that excess water flows in through the slot, falls to the level of the sluice or channel from there to the lock chamber and thus flows into the chamber. If the tail [lower] gates are left open, or with one rack [paddle] lifted, the water can then flow out into the lower level.

Questions about Irish locks

Is my understanding correct?

What proportion of locks on each Irish waterway are equipped with airholes?

Are they still maintained and used?

Belmont Lock May 2009 IHAI 5_resize

Land rack [ground paddle] outlet, Belmont Lock, Grand Canal

Royal Lock 43 Killashee 18-02-2007 01_resize

Ground paddle [land rack] outlet, Lock 43 Killashee, Royal Canal

Royal Lock 6 02_resize

Possible inlet, Lock 6, Royal Canal

The next three photos were taken at Coolnahay, on the Royal Canal, during the period of very low water levels in 2012.

Coolnahay in drought April 2012 08_resize

Letterbox-like slot at Lock 26, Coolnahay, Royal Canal. I must look for similar features on Grand Canal locks and photograph them (if they exist)

Coolnahay in drought April 2012 19_resize

A second slot forward of the first (hidden by the land rack mechanism in the previous photo)

Land rack locked open at Lock 35_resize

Land rack mechanism locked slightly open: the slots were well above the water level at the time

It is of course entirely possible that all of this is so obvious that everybody else already knows all about it, but that I just didn’t understand what I was looking at. I read WI’s Heritage Survey of the Royal Canal [PDF], but it didn’t say anything about this sort of thing: or at least if it did I didn’t spot it. The report uses some non-standard terminology [eg “head gates”] so I may have missed its identification of the canal’s water-management features.

If, Gentle Reader, you know of the existence of papers or other published materials on these arcana, do please leave a Comment and, if possible, relevant links to online sources. It seems to me that there is a shortage of information about these technical matters as they apply to Irish waterways; it would also be nice if we were able to say which technologies were applied when to which waterways. I do not know whether, for example, we can assume that the lock gate designs in use today were always used on all Irish waterways.

Pumps and crisps

Thanks to Colin Becker, I have updated this page to show the location of the ESB’s third pumping station between Meelick and Portumna: I had known only where two of them were.

I have also added to the page some rude remarks about the ESB’s policy of not revealing the clearance of their cables above navigable waterways. If, dear reader, you know of a change in the policy, or if you can effect such a change, or if you know the clearances, do please let me know by leaving a Comment.