The length of the outlet pipe should be proportional to the water output. When there is a higher water output, the width of the outlet pipe should be appropriately increased to reduce the flow loss rate.

(2) An anti-sedimentation device should be installed at the export point.

(3) The flow rate at the export should be 0.35 to 0.45 ms.

(4) There should be erosion prevention measures at the exits near the river channel.

(5) In areas close to the water intake point or with a high water output, a double-row or multi-row pipeline system can be used for drainage operations.