Section A
Q1.
(a) Discuss the issues and challenges related to watershed management. What is the role of peoples' participation in watershed development?
(b) Discuss land shaping concepts, purpose and applicability in a watershed.
(c) Explain in brief, different methods of calculating earth and soil volumes.
(d) Explain the procedure to conduct a topographical survey of a watershed by direct contour method.
(e) Describe briefly, the SCS-CN method of runoff estimation. A watershed has 100 ha area. The watershed has 20 ha pasture in silty clay soil of 2% slope (CN = 65), 30 ha of pasture on silty loam soil of 0.5% slope (CN = 70) and remaining 50 ha of wheat crop on loam soil of 1% slope (CN = 85). Estimate the weighted curve number for the watershed.