Most rural water supply systems which had to be turned off in the Waitaki District due to flooding are now back on.
However, the district council says three water supplies are remain off on Monday. They are: the Lower Waitaki, the Awamoko and the Herbert.
A Civil Defence recovery manager, Dougall McIntyre, says engineers should have the Lower Waitaki and Awamoko running again by Tuesday morning.
Mr McIntyre says the water will be discoloured for a few days and will need to be boiled.
Tankers with clean drinking water are available at Herbert and Papakaio.
Meanwhile, roading engineers have been assessing the damage to flooded back roads around the Waitaki District.
Contractors reopened part of State Highway 1 north of Oamaru that had been closed because of flooding on Monday.
Slips being cleared
Around Dunedin and in the Clutha district, a handful of roads remain closed due to flooding and slips.
A slip which blocked Portobello Road in Dunedin expected to be partially cleared on Tuesday.
More than 50 Waitaki district rural roads have been flooded, and the district council says it could take a long time to clear away debris and repair potholes.
Too much rain after drought for some farmers
Federated Farmers' Otago president Mike Lord says that he was poised to evacuate stock on Saturday afternoon and the break in the weather came just in time.
However, he says it will be a costly clean-up for many farmers - and for some, who have been struggling with drought over summer, it is a case of too much rain after waiting too long.
They have gone from having no feed to snow, Mr Lord says, and it could be a very long winter for some of them.