Bore drillers have abandoned a project to finding an abundant water supply, despite assurances by a local water diviner.

The taxpayer-funded project was stopped, after reaching a depth of 216 metres below ground level, at Lake Albert, near Wagga Wagga in Southern NSW.

The location had been chosen by water divining, a method decried by skeptics as 'pseudo-science'.

Wagga Boat Club Commodore Mick Henderson said the project cost about $60,000, of which $30,000 was public funds.

Mr Henderson said the drill produced mixed results.

"There's certainly water there, but the volume of water there is not enough."

He defended the decision to spend money on the water diviner's claims.

"No-one knows what is under the ground. Whether it's modern technology or a water diviner, nothing is sure until we do a test drill," Mr Henderson said.

"It's like looking into a crystal ball," he said.

Evaporation consumes 25 per cent of the lake each summer, leaving professional watersports at the mercy of regular rainfall.

The Boat Club will now explore other options to keep the lake full, including better storm water diversion.