The Environment Agency has issued warnings for the River Severn at Quatford and Hampton Loade, bringing the number of warnings to 10.
Flood barriers have already been placed at Ironbridge and around Frankwell car park and Theatre Severn in Shrewsbury.
More rain is expected over Thursday, the agency said, with water levels expected to peak in some areas today.
Read more on this story and other updates in Shropshire.
Seven flood warnings are in place across the River Severn in Shropshire, with two more along the River Vyrnwy at Maesbrook and Melverley and one on the River Perry at Mytton.
The Severn was recorded as running at 4.12m (13.52ft) at Bridgnorth, its highest measurement of 2015.
At Ironbridge the river was running at 4.98m (16.34ft), with 370 tonnes of water passing through per second, six times more than last week.
At Welsh Bridge in Shrewsbury the river was running at 3.65m (11.98ft), down from just over 4m (13.12ft) recorded on 2 December.
The Met Office has issued a yellow weather warning for heavy rain in Wales, which is expected by agency officials to affect the level of the River Severn through Shropshire.
John Redmond, chief fire officer for Shropshire Fire and Rescue Service, warned motorists to take care on the roads, describing the "extremely swollen" River Severn as "quite menacing".
"There are some very significant dangers," he said.
More flood warnings have been issued in Shropshire as the River Severn continues to rise.