The River Stour has reached its normal level for the time of the year after the blockage of the lock gates in Bures Mill was cleared.
However, the River Colne in Halstead is in a worse state.
A spokeswoman for the Environment Agency said: “The water levels at Townsford Mill are lower than they have been previously because gates that normally control the levels have reached the end of their life.
“One of the gates broke after being opened in a recent small flood and cannot be repaired so the safest option is to leave them open to prevent an increase in flood risk to riverside properties in Halstead.
“This means it is no longer possible to maintain the usual water level through the town but there is no risk to the environment in the channel, which we regularly monitor.
“We are looking at options for replacing the gates and are keeping in touch with the community to share progress.”