Russel Norman

Water storage

by Russel Norman

Federated Farmers has been talking about water storage. Now it’s true that there is a key role for water storage schemes to assist agricultural production. But there are downsides to water storage too. Water storage schemes can block access for fish and eels up and down rivers. The storage can destroy habitat that goes underwater.

This can result in loss of ecological values and recreational values. But Fish and Game put out a release today that points out that there are further issues.

Assuming the catchment’s current in-stream ecological and recreational amenity values are retained, fish passage is provided and provision is made for adequate flushing flows, there still remains the crucial issue of the adverse effects of intensified agriculture utilising the stored water

These adverse downstream effects are well understood, are cumulative and can be significant. Increased irrigation and intensification means increased stocking rates and fertiliser applications, which result in increased effluent and nutrient run-off into rivers, streams and aquifers that are often already suffering reduced flows. The cumulative effects of large scale irrigation on the recreational, ecological, community and cultural values of down stream waterways can be major.

It is intensification that is driving the destruction of water quality in rivers, lakes and beaches around the country. As people go to their summer holidays they will find their favourite swimming and fishing spots are even further degraded. We can’t keep intensifying.

Published in Environment & Resource Management by Russel Norman on Tue, December 16th, 2008   

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