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Ees416:Surface Hydrology Ii Question Paper

Ees416:Surface Hydrology Ii

Course:Surface Hydrology

Institution: University Of Eldoret question papers

Exam Year:2014

Answer all the questions
1.a)State the components of a hydrograph(3marks)
b)Define the following terms
i)Channel slope(2marks)
ii)Watershed length (2marks)
c)Calculate the watershed slope given the watershed length is 12,000m and the elevations of outlet and watershed divide along the main channel are 1850m and 2030m respectively.(3marks)
2.a)Using hydrographs distinguish between ephemeral and perennial rivers (5marks)
b)The following field observations were obtained at two sections on a stream separated by a distance of 250m along the stream.
U/s section 78.1m2 52.3m 71.38m
Middle section 82.3m2 55.7m -
d/s 85.4m2 58.6m 70.99m
Determine the flood discharge assuming Manning''s n=0.035.(5marks)
3.a)Explain briefly how land cover and land use affect the runoff characteristics of a catchment (4marks)
b)The table shows the land cover and land use complex of a watershed and associated curve numbers.
A 200km2 60
B 400km2 70
C 250km2 80
D 100km2 90
Using the soil Conservation Service Curve Number method ,estimate the direct runoff depth that would result from a storm rainfall of 50mm uniformly distributed over the watershed.Assume antecedent moisture condition II.(6marks)

Ees416:Surface Hydrology Ii Question Paper

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