Landfill
Landholder
Landslide
Larval fish
Lateral
Lateral moraine
Lava
Leach
Leachate
Leaching
Leaching field (leaching cesspool)
Leaching requirement
Lead time
Leakage
Lease of power privilege
| Left abutment
Left or right designation
leg
Length of dam.
Lentic
Letter of Agreement (LOA).
Levee
Level
Level of protection (LOP)
life cycle
Lift
Lift line
Limestone
Limnological conditions
Limnology
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