Step 1: Understand types of waterway crossings.
When two waterways intersect, different structures are used depending on their relative levels: Aqueduct: One waterway passes over another.
Syphon: Water flows under an obstacle through a closed conduit.
Level Crossing: Both waterways meet and cross at the same elevation.
Inlet and Outlet: Points where water enters or exits a system.
Step 2: Match definition with question.
Since the canal and drainage meet at the same level, the correct term is: $$ \boxed{\text{Level Crossing}} $$
Step 3: Eliminate incorrect options.
Aqueduct: Used when one waterway is above another.
Syphon: For crossing under obstacles.
Inlet and Outlet: Not a structural crossing.