The MDBA's draft Murray-Darling Basin Plan, titled the "Guide to the Proposed Murray–Darling Basin Plan", was released in October 2010 as the first part of a three-stage process to address the problems of the Murray–Darling basin. The Plan was in response to the 2000s Australian drought, and designed to secure the long-term ecological health of the Murray–Darling basin. This entailed cutting existing water allocations and tree growth environmental flows. The Basin Plan was designed to set environmentally sustainable limits on the quantities of water that may be taken from Basin water resources, to set Basin-wide environmental, water quality and salinity objectives, to develop efficient water trading regimes across the Basin, to set requirements for state water resource plans and to improve water security for all Basin users. It also intends to minimise social and economic impacts whilst achieving the plan's environmental outcomes.