The peak of flood hydrograph due to a 3-h duration isolated storm in a catchment is 300 m3/s. The total depth of rainfall is 7.5 cm. Assuming an average infiltration loss of 0.5 cm/h and a constant base flow of 25 m3/s, the peak of 3-h unit hydrograph (UH) of the catchment will be _m3/s

Q: well is sunk through an unconfined aquifer and is pumped at a constant rate. The draw-down in he…

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Q: q= 2200 cfs q= 62.2970 cms The watershed above the same location at Little Alamance Creek is 7.2…

A: Given data:- Flow rate Q = 2200 cfs Rainfall duration t = 1 hour = 3600 seconds Water shed area A =…

Q: Direction: One hour triangular unit hydrograph of a watershed has the peak discharge of 60 m³/sec.cm…

A: Peak discharge = 60 m3/sec.cm Duration = 10 hrs. Time base 30 hrs. f index = 0.4 cm per hrs. Base…

Q: 4) Compute the peak runoff, Qp, for a 15 year storm using the Rational Method for a drainage basin…

A: Reference : Appendix C - Design chart for rational method. Table : Value of C, Runoff Coefficient…

Q: Total observed runoff volume during a 6 hour storm with a uniform intensity of 4cm/ hr is 3 30 x…

A: Runoff volume =30 x 106 m3 6 hour storm, Intensity = 4 cm/hr

Q: of 15 m/s, estimate the direct runoff hydrograph (DRH) and the discharge of the 6 -h unit hydrograph…

A: Peak flow Average depth Infiltration loss =0.25 cm/h,Base flow It is required to find the peak…

Q: An effective rainfall of 2-hour duration produced a flood hydrograph peak of 200 m³/s. The flood…

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Q: Consider the following storm event given below for a small catchment of 120 ha. For a baseflow of…

A: Catchment area= 120 ha = 1200000 m2  1 ha=100002 m2

Q: 2) Determine time of concentration, tc, for use in the Rational Method for a drainage basin having a…

A: Average Grass Overland flow length, L = 80’ Slope, S = 2.5% Shallow Conc. L = 450’ S = 4.8%…

Q: The peak of flood hydrograph due to a 3-hr duration of isolated storm in a catchment is 270 m³/s.…

A: 1. Peak of flood hydrograph: 2. Duration of isolated storm: 3 hours3. Total depth of rainfall: 6…

Q: Questions (3.2) Determine using the 'rational formula' with runoff co-efficient equal to 0.80, the…

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Q: The average rainfall for a 3 hour duration storm is 2.7 cm and the loss rate is 0.3 cm/hr. The flood…

A: Duration of storm- 3 hour Average rainfall=2.7 cm, Base flow=20 m3/s, Peak flow = 210 m3/s, Loss…

Q: The peak flow of a flood hydrograph caused by an isolated storm was observed to be 100 m³/s. The…

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Q: (i) A catchment experiences a 2-hour duration isolated storm and the peak of the flood hydrograph…

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Q: A direct-runoff hydrograph due to an isolated storm was triangular in shape with a base of 60h and a…

A: Base = 60 hrPeak = 100 m3/secCatchment area = 500 km2To Find :The effective rainfall of the storm ?