THE Australian Capital Territory has signed an agreement with the federal government to support the ailing Murray-Darling Basin. The deal will deliver the ACT $2.28 million by 2019/20 for works to improve river flows, chief minister Katy Gallagher said in a statement on Friday. The overall Murray-Darling Basin plan is aimed at mitigating agricultural and environmental issues in the river system which extends from Queensland to South Australia, via NSW, ACT and Victoria. On Thursday, Victoria became the first state to sign up to the funding model which underpins the plan.