Ground Water Level: Drainage Systems Flashcards
1
Q
What is Open Drainage?
A
Surface water is removed via ditches or canals.
2
Q
What is Source Drainage?
A
Water is captured at the source before reaching the surface.
3
Q
What is Horizontal Drainage?
A
Pipes laid horizontally to remove water.
4
Q
What is Vertical Drainage?
A
Deep wells that lower the groundwater table.
5
Q
What is Deep Well Drainage?
A
Pumps extract water from deep underground.
6
Q
What factors determine the distance between drainage pipes?
A
Rain intensity, soil permeability (k-value), and water table fluctuations.
7
Q
What is the equation for lowering groundwater pressure?
A
π»β = (π£π¦ Γ πΏΒ²) / (4π) + π»β
Where: π»β = Final groundwater level, π£π¦ = Vertical velocity of water, πΏ = Distance between drains, π = Soil permeability.
