Section 4: Soil and Water Conservation Engineering
Soil Conservation Structures
Subtopic: Trenching
Question Statement:
Continuous and staggered contour trenching (CCT and SCT) is widely used on barren non-arable degraded watersheds primarily to:
Options:
(A) Trap in-situ rainwater runoff to recharge moisture for afforestation and silvipasture
(B) Allow combine harvesters to navigate steep slopes
(C) Increase downstream flood peaks
(D) Accelerate sheetwash into rivers
Answer Key:
A
Step-by-Step Solution & Explanation
Staggered contour trenches collect overland runoff and trap silt on barren hillsides, providing localized perched moisture reserves for planted tree saplings and grasses.