A rectangular labyrinth weir is a type of structure that can release floodwater efficiently and is cost-effective. Researchers used a mix of math and experiments to study how this weir works. They found that the weir's shape affects how much water it can release. The results show that this type of weir is much better at releasing water than a traditional one. This means it could be very useful in projects involving water and dams. The researchers also came up with a formula to calculate how well this weir can release water.