Section 4: Soil and Water Conservation Engineering
Gully Control Structures & Drop Spillways
Subtopic: Temporary vs permanent gully control structures
Question Statement:
Which of the following is classified as a permanent soil conservation structure for gully stabilization?
Options:
(A) Drop inlet / pipe spillway
(B) Woven wire check dam
(C) Loose rock check dam
(D) Brushwood check dam
Answer Key:
A
Step-by-Step Solution & Explanation
Drop inlet (pipe spillway), drop spillway, and chute spillways constructed with reinforced masonry or concrete are permanent structures designed for 25-50 year recurrence floods. Woven wire, loose rock, and brushwood dams are temporary/semi-permanent stabilizing structures.