Category Archives: Weather

Marl update

I have added more information, from Arthur Young in 1780, to my piece on dredging for marl on Lough Derg. Young provides a few more details on the process.

Cots, nets and salmon

Snap-net fishing in Carrick-on-Suir.

Water levels

Not on the Shannon or on the Erne but on the Mississippi. It seems the level is now 53 feet below the flood level of last May and eight to ten feet below normal.

RNLI on Lough Derg

8 July 2012

Lifeboat on the way

Nearly there

Coming alongside the casualty

Helm Colin Knight

Preparing to tow

Under way

Heading for Williamstown

Almost there

 

 

Speed

Lough Derg 8 July 2012

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The flash lock at Killaloe

An account of a passage here.

I have been told that the gates will not open (or will not be opened) if the upstream level is higher than the lower by some unspecified amount.

 

Shannon traffic figures May 2012

Amended to add linear trendlines to the graphs.

Passages recorded at each location in May

Portumna Bridge      635
Victoria Lock             618
Athlone Lock              771
Tarmonbarry Lock 433
Clondra Lock                91
Roosky Lock              622
Albert Lock                826
Clarendon Lock        692
Battlebridge                 74
Drumleague                 70
Drumshanbo Lock    54
Pollboy Lock            237
Sarsfield Lock             14

Total                  5137

Figures courtesy of Waterways Ireland.

Total passages for first five months of the year

2002 14630
2003 14840
2004 13993
2005 12693
2006 12184
2007 14013
2008 12273
2009 11407
2010   9800
2011    9103
2012    9189

Derived from WI data.

Charts with trendlines

The decline continues.

A day at Mountshannon

Some of the variety of boats seen at Mountshannon on 4 June 2012.

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Lough Derg water level

The water level on Lough Derg is very high, flowing over the guard lock at Killaloe.

 

Mullingar

The Met Éireann report [PDF] for spring (March to May) 2012 shows that rainfall measured at its Mullingar station was only 59% of the average for 1981–2010.