'Flood drainage' is a correct and usable phrase in written English.
You can use it when referring to a system of drains that are used to divert excess water away from an area. For example: "The town had to implement new flood drainage plans in order to prevent flooding during heavy rains."
Flood drainage systems are infrastructures essential in urban areas, which include retention ponds that can be used as water storage volumes to damp floods and simultaneously to produce energy, constituting innovative solutions to be integrated in future smart water grid′s designs.
Essential 4: Invest in and maintain critical infrastructure that reduces risk, such as flood drainage, adjusted where needed to cope with climate change.
These scores indicate that, since the floods in 2011, municipalities in Thailand have made the most progress on investing and maintaining flood protection systems such as flood drainage, levees, and floodwalls.
"They're digging trenches (for flood drainage).
Today, the river lies mainly between levees and concrete channels, and especially in its lower course, functions only as a flood drainage channel.
The Bradleys had spent most of the weekend letting their boys splash around a flooded drainage ditch across the street from their home.
The rate of flooding (drainage) depends in the first place on the tidal oscillation (see Figure 1B,C).
In Franklin County, an eight year-old boy drowned after getting sucked into a flooded drainage system; the death is considered indirect because the boy was chasing a ball into the drainage system.
Outcrops and landforms can yield direct evidence of lake level, facies changes that record details of lake-level fluctuations, and geologic events such as catastrophic floods, drainage-basin changes, and isostatic rebound.
The atmosphere, including the air, is one of the most crucial assets of our public trust... Global climate change threatens to dry up most of these waters, turning them from gorgeous, life-giving springs into dangerous flash-flooding drainages when the rare, heavy rains do come.
The regimen for water management was in the sequence of flooding, midseason drainage, re-flooding and moist intermittent irrigation.
