The great wall at Marsh Lake has fallen.

Along the South McClintock subdivision, a barricade referred to by Emergency Measures Organization (EMO) and volunteers as the 'great wall,' consisting of concrete blocks and sandbags, was breached this morning at Frank Wengzynowski's property.

At press time, just under 10 Marsh Lake fire crew and volunteers were on-site helping with the response effort, in addition to crews from Wildland Fire Management.

The deck at the Wengzynowski's property was being dismantled in order to dig trenches and construct more barricades around the house.

Currently only one property is affected, but the concern is that if the water continues to flow past the Wengzynowski's property, it could affect the entire point.

Not only were crews fighting the incoming water, but initial reports were that the number of sandbags stockpiled have also been depleted.

Water levels remained stable in the Southern Lakes region over the weekend.

Last week saw a steady increase take place over a few days, with several new records being set. The water level on Monday was 34 centimetres above the previous maximum record, set in 1981, and 54 centimetres higher than the high water level set in 2004.

'The level in the Upper Lakes has likely peaked, and hopefully it starts going down soon,' said Doug Caldwell, spokesman for the government's protective services branch.

The forecast shows above average temperatures for the next few days, although the glacial melt is no longer affecting the runoff. Periods of rain are forecast for later in the week.

'We are still very much at the mercy of the rain and the wind,' Caldwell said.