SOUTH Burnett dam levels continue to drop as the drought drags on, with no sign of adequate rain relief on the horizon.

Bjelke-Petersen Dam is faring the worst in the South Burnett. BP Dam is holding 7689ML, equating to 5.7 per cent of the dam's full supply volume of 134,900ML.

The dam level paints a dire picture as the South Burnett region marks two years and five months of being fully drought declared.

According to Sunwater, none of the dams are receiving inflows at the moment.

This impacts access to water for irrigators and businesses with access to water schemes, like the Barker Barambah scheme which reduced allocations to 0 per cent for medium priority users.

It comes as two towns in the Toowoomba region have been escalated to high-level water restrictions by the council.

Residents living in Cecil Plains and Yarraman will move to high level water restrictions from Monday 19 August.

As the region continues to experience severe drought, waste and water committee chair Nancy Sommerfield said the move to high level restrictions was necessary for the communities.

CURRENT DAM LEVELS:

Bjelke-Petersen Dam: 5.7 per cent, 7689ML

Boobir Dam: 27 per cent, 35.8ML

Boondooma Dam: 29.03 per cent, 59,279ML

Gordonbrook Dam: 73.86 per cent, 4874ML

Joe Sippel Weir: 87.47 per cent, 623ML

Silverleaf Weir: 93.93 per cent, 545ML