"Anyone is welcome and we particularly encourage people who live near the sites of interest to call in, find out more about the project and give us their feedback," said project director Michael Bassett-Foss. "We are also interested in continuing to talk with farmers who may want to use irrigation water from any scheme that might eventuate."
He said while an initial survey of farmer demand for water had already been done, more detailed demand investigations would form part of the next stage of work.
"The project has been communicating directly with owners of property in the footprints of the storage sites of interest and other interested parties since last year," said Mr Bassett-Foss.
"As we move into the next stage of investigations, we want to extend this more widely."
The investigation is expected to be complete by the end of 2014.
The next stage will determine any schemes that are worth taking forward to a full feasibility study in 2015.
The project has the potential to increase irrigation in the Wairarapa valley from 12,000 hectares at the moment to about 42,000ha.
Uses could include increasing low summer river flows, recreation, stock water, frost fighting, hydro-electricity generation and urban water supply.
"If people are not able to attend the day in their own area, they are welcome to attend one of the other four days," Mr Bassett-Foss said.
