If you are thinking about paddling from Halesworth down to Blyford or beyond, the upper reaches might be easier after Winter floods than after Summer weed growth...
End of Summer:
And after a Winter flood:
Both looking upstream from the bridge at Mells. The Summer picture was absolute basal levels, the Winter one had about 0.6m showing for Billingford flow gauge on the Waveney.
There are a number of serious tree blockages between Halesworth and Blyford. Several might need a difficult portage around.