1. The following are the ordinates of the 9-hour unit hydrograph for the entire catchment of the river to reservoir dam site: Time (hr) 0 9 18 27 36 45 54 63 72 81 90 Discharge (cumecs) 0 69 1000 210 118 74 46 26 13 4 and the catchment characteristics are A = 4480 km2, L = 318 km, Le = 198 km. Derive a 3-hour unit hydrograph for the catchment area of river to the head of reservoir, given the catchment characteristics as A = 3780 km2, L = 284 km, Lca = 184 km. Use Snyder's method with necessary modifications for the shape of the hydrograph.
1. The following are the ordinates of the 9-hour unit hydrograph for the entire catchment of the river to reservoir dam site: Time (hr) 0 9 18 27 36 45 54 63 72 81 90 Discharge (cumecs) 0 69 1000 210 118 74 46 26 13 4 and the catchment characteristics are A = 4480 km2, L = 318 km, Le = 198 km. Derive a 3-hour unit hydrograph for the catchment area of river to the head of reservoir, given the catchment characteristics as A = 3780 km2, L = 284 km, Lca = 184 km. Use Snyder's method with necessary modifications for the shape of the hydrograph.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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![1. The following are the ordinates of the 9-hour unit hydrograph for the entire catchment of
the river to reservoir dam site:
Time (hr) 09 18 27 36 45 54 63 72 81 90
Discharge
(cumecs)
69 1000 210 118 74
46
26 13
and the catchment characteristics are A = 4480 km2, L = 318 km, Lc = 198 km.
Derive a 3-hour unit hydrograph for the catchment area of river to the head of reservoir,
given the catchment characteristics as A = 3780 km2, L = 284 km, Lca = 184 km. Use
Snyder's method with necessary modifications for the shape of the hydrograph.
4.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F1bd5ecff-7eab-4c0b-b769-61204093d9be%2F21eac20c-71d6-4523-a27d-8801079d1d2e%2F400nhmx_processed.jpeg&w=3840&q=75)
Transcribed Image Text:1. The following are the ordinates of the 9-hour unit hydrograph for the entire catchment of
the river to reservoir dam site:
Time (hr) 09 18 27 36 45 54 63 72 81 90
Discharge
(cumecs)
69 1000 210 118 74
46
26 13
and the catchment characteristics are A = 4480 km2, L = 318 km, Lc = 198 km.
Derive a 3-hour unit hydrograph for the catchment area of river to the head of reservoir,
given the catchment characteristics as A = 3780 km2, L = 284 km, Lca = 184 km. Use
Snyder's method with necessary modifications for the shape of the hydrograph.
4.
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