Will Lincoln and Boston's river see another terrible duckweed summer? 🍀
Periods of hot and dry weather can be busy times for the Environment Agency as we work to protect not just our water resources; but our precious environment and the wildlife that depends on it.
It becomes even more of a problem during prolonged periods of dry weather when levels in rivers are very low and, in particular on systems like the Witham, where water is managed for a number of needs, from water resources to wildlife benefits.Duckweed is one of the aquatic plants that can cause problems on our rivers. By its nature, it will bloom and grow excessively in hot weather.
Duckweed can also impact other river users, such as those fishing. However, the Environment Agency cannot remove floating weed for this reason alone. Please note that the Environment Agency is unable to process any rod licence refunds based on condition of individual local fisheries.Duckweed can be good for fish and other wildlife in our rivers, providing an important source of food.
For example, the sluice gates at Grand Sluice can be raised or lowered to allow water through. The draw of the water pulls the weed under the safety booms and flushes it into the sea where it will break down in salt water.During periods of drought, the levels on the Witham can become very low. When this happens it’s important that the gates remain lowered to retain as much water as possible. This means that the rivers can’t go over the top of the gates and weed can’t be flushed from the river.
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