THE Mildura/Wentworth region is "definitely still open for business" despite high levels of blue-green algae detected along a significant stretch of the Murray River.

WaterNSW this week issued a red alert (high) warning for the Murray from Red Cliffs downstream to Wentworth and urged people to avoid recreational activities where they may come into direct contact with water.

People have been advised not to enter the water, not to drink untreated water or bathe in untreated water while a red alert level warning is in place.

However, Mildura Regional Development (MRD) yesterday said there were still existing zones along the river that have no high readings in place.

MRD CEO Brett Millington said that while blue-green algae existed in the region, paddleboat tours, recreational boating, kayaking and jet-skiing can all still be undertaken.

He said MRD had been working closely with Lower Murray Water to ensure that people follow the right precautions in avoiding contact with the affected water.

"In line with a well-established action plan, MRD is undertaking necessary measures to provide the local tourism industry with advice and background information on the blue-green algae situation that exists along the Murray River," Mr Milli...