Environment Agency officials told residents in low-lying areas or near flood-prone areas to watch water levels.
Water levels could be "anywhere from two feet to 10 feet" in those areas, Cowan said.
The company said water levels at reservoirs are checked daily and the network was being managed.
"The water levels are higher than our sewage network at the moment, " she said.
And they warned they could shut the waterway again if water levels rise to 62.5 feet.
Flood warnings have eased along the River Thames following peak water levels at the weekend.
The Environment Agency said water levels for large rivers were dropping but more rain was forecast.
The trick is a series of sensors that monitor water levels and measure how quickly they rise.
ENGADGET: Alt-week 8.4.12: buckyballs, bosons and bodily fluids Alt
The Samarra bridge has a dam that generates power and regulates water levels on the Tigris River.
They also worry that higher water levels in the spring will impair their ability to drain fields.
An additional pump lowered into the mine by the fire service has helped reduce the water levels.
This will significantly lower the water levels in Horsbere Brook, which burst its banks four years ago.
BBC: Longlevens and Elmbridge flood-prevention work finished
Since then trapped boaters have been advised to adjust mooring ropeslack to accommodate the changes in water levels.
BBC: Trapped boaters on Wiltshire canal to be freed in new year
Native tribes will not have to relocate, but could face a change of lifestyle once water levels shrink.
FORBES: Brazil's "Avatar" CEO Pens Letter to Arnold, and Cameron
Contaminated water levels at a flooded disused mine in mid Cornwall have improved, the Environment Agency has said.
These factors include high water temperatures, pollution, sedimentation, high light levels, reduced water levels and changes in salinity.
Peter Hounslow , from Acorn Antiques, said the water levels rose "very quickly" and caught people "by surprise".
An estimated 150 were rescued, many from caravan parks, but the clean up has begun after water levels receded.
"Water levels on the river are not something that we ordinary people can do anything about, " says Zhang Jun.
Dozens gathered Monday to gawk at the rising water levels along a waterfront.
Low water levels on Lake Malawi have forced the steamers to anchor offshore at most ports along the lake.
Water levels on the River Severn peaked at Welsh Bridge, Shrewsbury, at lunchtime and at Buildwas during the afternoon.
The River Derwent has peaked through Malton but water levels would remain high for some time, the agency said.
Elsewhere, water levels in Shrewsbury peaked on Monday and are now falling slowly.
BBC: NEWS | UK | England | Shropshire | County to share in ?1m flood aid
Because of low water levels and the harbors filing with silt, it can only carry 58, 000 tons, he said.
CNN: New water lows for Great Lakes could drain local economies
The Environment Agency told residents in flood-prone areas to watch water levels closely.
The Environment Agency said roads, including the A6006 at Asfordby near Melton Mowbray, were badly affected by high water levels.
"Extremely dangerous" storm surges have been forecast in some areas that could raise water levels by up to 11ft (3.35m).
Water levels in the River Severn are expected to peak on Tuesday, with Tewkesbury and Maisemore particular areas of concern.
BBC: Gloucestershire flooding residents make rescue decision
Water levels are expected to remain high as more rain has fallen in Wales - the source of the river.
应用推荐