Estimating water use efficiency for a whole catchment 2008-02-01T05:14:06Z 2010-08-03T03:36:14Z Estimating water use efficiency for a whole catchment Research Bulletin 4 H Fairweather, D Dore H Fairweather, D Dore Catchment managers have a responsibility to ensure equitable use of water, balancing water requirements from the upper catchment all the way downstream to the end of the valley. On farms, effi cient use of water is a goal which everybody shares to avoid plant stress from drought or waterlogging and to avoid paying for too much water. PF061137 PF061137 yes