Advances in Water Treatment and Enviromental Management

RIVER FANE FLOW REGULATION SCHEME 237small amounts of rainfall, and in the case of Lough Muckno poor rating curvedefinition at very low flows. It was recognised moreover that the time required forequilibrium to be established between inflows to Lough Ross and outflows to theRiver Fane below would vary between 3 and 5 days approximately, with the longerperiod applying at low flows. Accordingly it was decided to estimate recession factorusing the expression(4)FIG 3 RECESSION FACTOR AT CLAREBANE BRIDGEand these have been plotted for Clarebane Bridge in Fig 3. These show that theRecession Factor (R 0 ) at Clarebane Bridge is relatively constant at 0.9 but rises to0.92 at low flows. Since Storage/Yield analyses suggest that winter inflow will alwaysbe adequate to replenish storage at the levels of demand which are projected,inactivation of outlet controls for the winter period will be possible thus minimisinginterference with winter floods.