Addressing the MDBA’s annual river reflections regional water conference in Narrabri, Professor N. LeRoy Poff from the University of Canberra and Colorado State University said the Murray-Darling Basin Plan was a beacon for other nations on how integrated water management at the basin scale can work.
“In the Colorado River Basin we are in a vicious water cycle of overuse, overtake and under regulation, and the latest projections are frightening,” Prof Poff said.
“Demand for water in the Colorado River Basin is now exceeding supply and by 2030, we’re looking at a shortfall in excess of 750 gigalitres, not accounting for climate change.
“When you consider that 85 per cent of the current usage is going to agricultural production, that’s going to create ripples through the US economy and our food production capabilities.
“Water resources are highly contested and there is limited scope for flexibility to achieve more equitable allocations, especially regarding Native Americans and the environment.
“We also have the urgent challenge of how to plan effectively for a warmer and hydrologically more variable climate.”
Prof Poff said much could be learned from the recent decades of water management across all levels of government in the Murray-Darling Basin.
“Decision-making based on science and evidence is fundamental to preparing for a sustainable future in the face of increased human demand and shrinking supply. Scientists are eager to assist when brought to the table,” he said.
“The Colorado supplies drinking water for more than 40 million people and serves over 220,000 square kilometres of farmland with irrigation — yet lamentably, little is allocated for the environment.
“I’m particularly impressed by the balance achieved between community and industry needs and the protection of water for the environment in Australia. That commitment is enviable.
“We need decision makers to think seriously about how we manage water equitably across all competing interests to advance resilience at the system scale,” Prof Poff said.
