The 1-hour unit hydrograph for the St. Joseph watershed at Acono is given in Table 3.1. (One unit is 1 cm.) Table 3.1 Time (h) 1 2 3 4 6. 7 8. Unit Hydrograph (m³/s) 1.8 30 86 42 15 5.5 1.8 A raingauge recorded a major storm within the catchment as having a depth of 4 cm in the first 2 hours and 5 cm in the second 2 hours. The abstraction rate is 0.34 cm/h and the baseflow is 50 m³/s. a. Use the 1-hour unit hydrograph to develop the 2-hour unit hydrograph. b. What is the peak flow resulting from the storm? c. At what time did this peak flow occur?

The 1-hour unit hydrograph for the St. Joseph watershed at Acono is given in Table 3.1. (One unit is 1 cm.) Table 3.1 Time (h) 1 2 3 4 6. 7 8. Unit Hydrograph (m³/s) 1.8 30 86 42 15 5.5 1.8 A raingauge recorded a major storm within the catchment as having a depth of 4 cm in the first 2 hours and 5 cm in the second 2 hours. The abstraction rate is 0.34 cm/h and the baseflow is 50 m³/s. a. Use the 1-hour unit hydrograph to develop the 2-hour unit hydrograph. b. What is the peak flow resulting from the storm? c. At what time did this peak flow occur?

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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