Archives - January 1983 - NEAR Killorglin the River Laune is tidal. In order to find out what effect man was having on the river three students at the local Intermediate School decided they first had to find out what effect the tide was having on the river.
Our photograph shows (from left) Fergal O'Shea (aged 16), Rangue, Killorglin; Deirdre Costello (17), Sunhill, Killorglin, and Paula O'Connor (16), Laune View, also Killorglin. In the background is the River Laune. The group took two study points on the river that are two and a half miles apart, one tidal and the other non-tidal.
The group tested the water at both points at high and low tide each day for a month for chemical and biological demand; acidity; sediment and temperature. The full results were presented at the 1983 Aer Lingus Young Scientists Exhibition at the RDS in Dublin.
The acidity level at both points was neutral. The water temperature in the non-tidal area was always colder than the air temperature but in the tidal area the water was warmer than the air.
A surprising result was that the oxygen demand was up to five times higher in the tidal area but this is probably because the tidal area was below Killorglin and the non-tidal area above - the higher demand was probably caused by sewerage and other pollutants from the town.
The group intends in the coming year  to follow the effect man has had on the river. They feel that the increase in population and the growth in industry all warrant monitoring the river carefully.