weirs

weirs are often used to control water flow in rivers.

fish can easily navigate around weirs if they are designed properly.

many weirs are built to create reservoirs for irrigation.

weirs can help improve water quality by slowing down the flow.

some weirs are designed to allow sediment to settle.

weirs can also serve as recreational spots for fishing.

during heavy rains, weirs can help prevent flooding downstream.

engineers often study the impact of weirs on local ecosystems.

weirs can be made from various materials including concrete and wood.

maintenance of weirs is crucial for their long-term effectiveness.