Drainage and navigation of the River Shannon

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FLO FOR 247


Report, 1865—continued.


Floods—contin ued.


1187. 1199-1206 Belief that tlie extraordinary high floods have not been in any way


affected by the arterial drainage, M'Kerlie 1184-1187 Aggregate of 19,000 acres


as the total area capable of improvement from the works generally, ib. 1299-1301.


The unusual rains, rather than the drainage, were the cause of the damage done in


1861 and 1862, Sir R. Griffith 1619-16-21 Statement of the height attained by the


floods at Killaloe in various years since 1847; doubt as to the floods having risen in
summer more rapidly or to a greater heiglit since the Shannon works, Forsyth 1933-
1941.


Witness shows that the works of the Commissioners have been quite ineffective as
regards the reduction of the level of the flood waters to the extent intended, Neville


2156-2160 Illustration of the unfairness of the system of average heights of the


water as a means of testing the injury that may be done, Lynam 2320-2325.


The works contemplated by witness would carry off such floods as that of 1861, but
not extraordinary floods, to meet the evils of which an unduly large outlay would be
necessary, JBateman 2118-2120. 2544,2545. 2581-2583.


Conclusion of the Committee that as regards the prevention of the inundation of the
contiguous lands the works have not been so successful as they ought to have been,
considering the amount of money expended upon them, Rep. iii.


See also Act 5 6 Will. 4 c. 67. Callow Lands. Drainage. Height or
Level of the River. Killaloe. Lower Districts. Meelick. Navigation.
Plans. Sluices and Flood-gates. Suck River. Value of Land. Weirs.


Forsyth, William. (Analysis of his Evidence.)—Is engineer to the Board of Works in


Dublin 1838, 1839 Cannot give any explanation as to the expenditure of a sum of


8,144/. put down for Shannon works in the years 1860-61 ; 1840-1842 Information


as to the height of the head weir at Killaloe above the upper sill of the lock; the average
level of the weir is about nine inches higher than the Parliamentary level but at the


portion near the lock is eighteen inches higher, 1843-1853 Efl'ect upon the navigation


of lowering by nine inches the weir at Killaloe ; injury unless certain precautions are
taken, 1854-1860. 1921-1924.


Necessity if sluices be constructed at Killaloe of also improving the channel both above
and below, or there would not be an efficient discharge of water in times of heavy floods,


1861-1879. 1902, 1903 Witness long since proposed sluices and other works at


Killaloe, the estimated cost of which was 25,232 I.; these would restrain the floods and


improve the drainage all the way up to Meelick, 1871-1886. 1891, 1892 Want of an


improved discharge at the World's End if the proposed works were made at Killaloe,
1886-1889.


Additional works required at and about Killaloe, even if the original plans had been


carried out in their integrity, 1893-1899 Circumstance of there having been no


provision for sluices in the Parliamentary plans, 1900, 1901 Objection to sluices


unless accompanied with excavation and improvement of the channel, 1902-1905 


Question as to the expediency of applying moveable sluices or ciests to the top of the
weir at Killaloe; reference hereon to a self-acting sluice proposed in one of witness's
reports, 1906-1920. 1927-1929.


Increased current at Killaloe by any lowering of the weir; facility of obviating this


objeciion, and of restoring the mound wall which formerly existed, 1921-1926 With


regard to the Suck, witness has no apprehension that its improvement would cause any


material injury to the Shannon if the latter were not first dealt with, 1930-1933 


Statement of the height attained by the floods at Killaioe in various years since 1847;
doubt as to the floods having risen in summer more rapidly or to a greater height since the
Shannon works, 1933-1941.


With reoard to the cost of the works proposed by witness his estimates have been
founded entirely on his own experience, but have been concurred in by others, 1942-1945;


1950,1951 ^Works below Tarmonbarry by which the Camlin district may be relieved


of floods; sluices in Tarmonbarry weir would not answer the purpose, 1946-1949 


Suggestions as to the improvement desirable at Roosky weir; Tarmonbarry weir must


first be improved, 1952-1956 Plan of improvement proposed at Meelick, so as to


reheve the lands up to Athlone; estimated cost of 49,793/.; 1957~1962.


Improvement necessary at Bishop's Island with reference to the back-water of the Suck


in time of flood, 1963, 1964 Objection to a plan for diverting the Suck at Lough Ree,


1965, 1966 Very little done for improving the outfall of Lough Allen; improvement


however by altering the entrance of the Arigna river into the Shannon, 1967-1974. 1979


â–  Approval of sluices in Jamestown weir, rather than of now removing it above the


bridge, 1975-1978-


Advantage generally of the deviations from the original plans in legard to the lands;


question he'reon whether there are not certain exceptions to this rule, 1979  


Character of the deviations or alterations at Meelick considered with reference to the


464. I I 2 questio