Anglers spearhead lake irrigation battle
Freshwater, TAS, Trout No Comments »TASMANIAN freshwater anglers, normally content to cast a line and forget about distractions such as the economy and politics, are mobilising for the fight of their lives.
They fear the centrepiece of a $115 million world famous trout fishing industry — Arthurs Lake, in Tasmania’s highlands — is under threat from an ill-conceived irrigation scheme.
More broadly, they are concerned the rush to “drought-proof Tasmania” with a series of 11 irrigation schemes, costing taxpayers $240 million, could create an ecological disaster on the scale of the Murray-Darling.
“We have got a crisis on the doorstop of Tasmania’s lakes and the Government is talking about 11 irrigation schemes for which there is no known science and which promise to alter the nature of Tasmania,” says Richard Dax, executive officer of Anglers Alliance Tasmania.
Mr Dax is marshalling his forces to oppose one of the first ofthe irrigation schemes, the Arthurs Lake Pipeline.
It is a $61 million plan to take up to 28,000 megalitres of water each year from Arthurs Lake to the lower midlands, where — 73km away — decades of drought have farmers in despair.
The problem is that Arthurs Lake, like many of Tasmania’s highland lakes, is also feeling the effects of record low rainfalls.
A mecca in Tasmania’s brown trout fishery, Arthurs Lake is already 5.4m below full supply, according to fishermen.
If it drops further, they fear turbidity — murkiness — will become a problem here as it has in other “over-exploited” lakes, such as Lake Sorell and Lake Crescent.
Turbidity is a turn-off to anglers and cashed-up tourists who flock to the region.
Former guide Neil Grose, publisher of The Tasmanian Sportsfisher, says: “The whole economy up here is built around fishing — the place exists because of trout fishing.”
Mr Dax will next week begin talks with the conservation movement to broaden the fight beyond the state’s 30,000 anglers.
Turbidity is already an occasional problem in Arthurs Lake and Mr Dax says the water level has fallen 1.5m below a level set in 1993 in an agreement between fishermen and Hydro Tasmania.
Anglers are demanding a full environmental impact study before the pipeline proceeds and argue endangered species, including freshwater crayfish and several species of galaxias fish, are also at risk.
The body responsible for the Arthurs Lake Pipeline proposal is the Tasmanian Irrigation Development Board.
It argues the loss of 28,000ML a year from the lake for irrigation will be compensated by Hydro no longer diverting exactly the same quantity for power generation.
But with Hydro dams still only at 30 per cent capacity because of lack of rainfall, the argument is not washing with fishermen.
“If these drought conditions continue, it is quite likely the Hydro will want their bit as well,” Mr Dax says.
Water is already being diverted from Arthurs Lake to Lake River to meet the uncapped rights of a number of irrigators.
Irrigation Board chief executive Jock Chudacek concedes there is no guarantee Hydro will not decide to divert water for power generation, but argues the irrigation deal does nothing to increase the potential demands on the lake. He agrees, however, that action is needed to end uncapped water rights for the Lake River irrigators.
And he assures anglers that all irrigation schemes will be subject to environmental impact studies.
Alan Harradine, the Tasmanian Government’s general manager of Water Resources, is urging calm. He says all water development proposals will need to meet state and federal statutory approval processes and National Water Initiative requirements.
Source: The Australian