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1. (a)The measured streamflow data for a 2hr storm over a catchment of area 1.98km2 is shown in Table 1. Assuming a constant baseflow of 1m3/s, derive the 10mm 2hr Unit Hydrograph Table 1: Streamflow data Time (hr) 0 1 2 4 5 6 7 8 9 10 Flow (m³/s) 1 2 8 14 11 9 8 6 4 2 1 (b) Use the hydrograph developed in (a) to determine the quick response runoff occurring when a storm of duration 4 hours falls on the catchment, total rainfall was 30mm during the first 2 hours and 105mm during the second half of the storm. Assume losses are 15mm/hr. 31

1. (a)The measured streamflow data for a 2hr storm over a catchment of area 1.98km2 is shown in Table 1. Assuming a constant baseflow of 1m3/s, derive the 10mm 2hr Unit Hydrograph Table 1: Streamflow data Time (hr) 0 1 2 4 5 6 7 8 9 10 Flow (m³/s) 1 2 8 14 11 9 8 6 4 2 1 (b) Use the hydrograph developed in (a) to determine the quick response runoff occurring when a storm of duration 4 hours falls on the catchment, total rainfall was 30mm during the first 2 hours and 105mm during the second half of the storm. Assume losses are 15mm/hr. 31

Structural Analysis
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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1. (a)The measured streamflow data for a 2hr storm over a catchment of area 1.98km2 is shown in Table 1. Assuming a constant baseflow of 1m3/s, derive the 10mm 2hr Unit Hydrograph Table 1: Streamflow data Time (hr) Flow (m³/s) 0 1 2 3 4 5 1 2 8 14 11 9 6 7 8 8 6 4 9 10 21 (b) Use the hydrograph developed in (a) to determine the quick response runoff occurring when a storm of duration 4 hours falls on the catchment, total rainfall was 30mm during the first 2 hours and 105mm during the second half of the storm. Assume losses are 15mm/hr.
Transcribed Image Text:1. (a)The measured streamflow data for a 2hr storm over a catchment of area 1.98km2 is shown in Table 1. Assuming a constant baseflow of 1m3/s, derive the 10mm 2hr Unit Hydrograph Table 1: Streamflow data Time (hr) Flow (m³/s) 0 1 2 3 4 5 1 2 8 14 11 9 6 7 8 8 6 4 9 10 21 (b) Use the hydrograph developed in (a) to determine the quick response runoff occurring when a storm of duration 4 hours falls on the catchment, total rainfall was 30mm during the first 2 hours and 105mm during the second half of the storm. Assume losses are 15mm/hr.
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