A day of action to disrupt criminals using Suffolk's roads led to nine people being arrested as more than 80 vehicles were stopped by police.
Boaters have raised concerns there are not enough moorings in the Broads to cope with the increased capacity during the summer months.
The weed, which has been known to grow through concrete, knock down walls and destroy foundations is now prevalent across much of Britain.
Flood alerts have been issued for parts of Norfolk and Suffolk ahead of possible flooding during the next high-tide.
Much of Waveney is at risk of flooding until lunchtime today.
Flood alerts are still in place after this week's winter surge caused rivers to swell.
After being battered by high tides throughout yesterday, concern remains for those along the River Waveney today.
Flood warnings and alerts remain in force across Norfolk and Suffolk, but the region appears to have escaped relatively unscathed amid high tides and blustery winds.
A row of new beach huts were left toppled and flooded by surging spring tides - just days after being "temporarily placed" on the sand.
A flood warning has been issued for low lying properties along the tidal River Waveney.
Two flood warnings remain in place across Norfolk and Suffolk ahead of the next round of high tides.
The Environment Agency have been giving their latest updates on the situation across the Suffolk coast as high tide hits across Suffolk.
A Southwold pub has pulled out all the stops to protect itself as spring tides are expected to threaten parts of the Suffolk coastline.
Flood warnings requiring immediate action have been issued for three stretches of the East Anglian coastline.
Forecasters are warning of coastal flooding across Norfolk this week prompted by a cocktail of 50mph winds and high spring tides.
A major operation involving six government agencies and four police forces cracking down on illegal and unsafe activity on Norfolk's roads has taken place.
Leaders from across Suffolk came together to discuss the ongoing work to transform Lowestoft and secure a bright economic future for the coastal town.
People are being warned not to go in the water near Lowestoft's south beach after worries over pollution were raised by lifeguards.