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Mr. Wm. Ross
asked the Secretary of State for Northern Ireland what is now the demarcation of responsibilities between Royal Ulster Constabulary and Army duties in Northern Ireland; and how these responsibilities differ from those prevailing in 1968, 1972 and in 1975.
Mr. Mason
The Army is deployed in Northern Ireland in support of the Royal Ulster Constabulary, wherever and whenever it may be necessary to assist it in maintaining law and order. This has been the position since August 1969. In the field of security operations the Army had the primary responsibility up to the end of 1976; since that date,
| LOUGH NEAGH ESTIMATED INFLOW AND OUTFLOW | |||||||
| Maximum Mean 1-Day Flow | Maximum Mean 7-Day Flow | ||||||
| "Water Year"* | Inflow | Outflow | Inflow | Outflow | |||
| 1972–73 | … | … | … | 1,610,000 | 540,000 | 1,080,000 | 530,000 |
| 1973–74 | … | … | … | 1,130,000 | 620,000 | 870,000 | 530,000 |
| 1974–75 | … | … | … | 660,000 | 580,000 | 460,000 | 550,000 |
| 1975–76 | … | … | … | 950,000 | 480,000 | 570,000 | 470,000 |
| 1976–77 | … | … | … | 1,420,000 | 657,000 | 1,010,000 | 628,000 |
| * The "Water Year" is from 1st October to 30th September. | |||||||
| Flows are in cubic feet per minute. | |||||||