The following table gives values of measured discharges at a stream gauging site in a year. Upstream of the gauging site, a weir built across the stream diverts 3.0 Mm³ and 0.50 Mm³ of water per month for irrigation and for use in an industry respectively. The return flows from the irrigation is estimated as 0.8 Mm³ and from the industry at 0.30 Mm³ reaching the stream upstream of the gauging site. Estimate the natural flow. If the catchment area is 180 km² and the average annual rainfall is 185 cm, determine the runoff-rainfall ratio. Month 1 Gauged flow (Mm³) 2.0 2 3 1.5 0.8 4 0.6 5 6 2.1 8.0 7 8 9 10 11 12 18.0 22.0 14.0 9.0 7.0 3.0

The following table gives values of measured discharges at a stream gauging site in a year. Upstream of the gauging site, a weir built across the stream diverts 3.0 Mm³ and 0.50 Mm³ of water per month for irrigation and for use in an industry respectively. The return flows from the irrigation is estimated as 0.8 Mm³ and from the industry at 0.30 Mm³ reaching the stream upstream of the gauging site. Estimate the natural flow. If the catchment area is 180 km² and the average annual rainfall is 185 cm, determine the runoff-rainfall ratio. Month 1 Gauged flow (Mm³) 2.0 2 3 1.5 0.8 4 0.6 5 6 2.1 8.0 7 8 9 10 11 12 18.0 22.0 14.0 9.0 7.0 3.0

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Question

The following table gives values of measured discharges at a stream gauging
site in a year. Upstream of the gauging site, a weir built across the stream diverts 3.0 Mm³ and 0.50 Mm³
of water per month for irrigation and for use in an industry respectively. The return flows from the
irrigation is estimated as 0.8 Mm³ and from the industry at 0.30 Mm³ reaching the stream upstream of
the gauging site. Estimate the natural flow. If the catchment area is 180 km² and the average annual
rainfall is 185 cm, determine the runoff-rainfall ratio.
Month
1
Gauged flow (Mm³) 2.0
2
1.5
3 4 5 6 7 8 9 10 11 12
0.8 0.6 2.1 8.0 18.0 22.0 14.0 9.0 7.0 3.0

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