The daily record of rainfall over a catchment area is 0.2 million cubic meters. It has been found that 80% of the rainwater reaches the storage reservoir and then passes over a rectangular weir. What should be the length of the weir, if the water is not to rise more than 402.5 mm above the crest? Assume suitable value of coefficient of discharge for the weir as 0.62.

Q: 3. A spillway, 12.90 m long, releases flood runoff from a reservoir of 5 hectares in area. If the…

A: Given Data  Spillway length (L) = 12.9m  Area (A) = 5 ha = 5 × 104 m2  Elevation drop from 55m to…

Q: A certain lake has a surface of 708,000 sq m. For a given month ( assumed 30 days ) the lake has an…

A:

Q: The 10-minute triangular unit hydrograph for a watershed has a peak discharge of 100 ft’/s at 40…

A: 10-minute triangular unit hydrograph peak discharge(Q)=100 ft3/s (occur at 40 minutes) Total…

Q: stream with a flowrate of 10 m3/min and an MTBE concentration of 5 g/m3 flows into the first…

A: Inflow rate = Inflow concentration = Reservoir volume (V) = Time (t) = 1 hour = 60 minutes

Q: Estimate the lag time (hr) for the following watershed: Hydraulic length (miles ) = 1.12 %3D Curve…

A: Given:- The hydraulic length of watershed = 1.12 miles Curve number for watershed = 80  The average…

Q: Average runoff from a 600 km2 catchment area was measured as 60 m3/s 3 points for a 3-hr period .If…

A: catchment area = 600km2  average run off = 60m3/s for 3hr storage = 10cm infiltration rate = 0.8…

Q: A peak flow of a flood hydrograph due 3 to a 6 hour storm is 470 m/s. The corresponding average…

A:

Q: It is required to find the maximum flow rate to be used in the design for the rainwater system to be…

A: To obtain maximum flow rate in the designing of the rainwater system. Total area = 3.2 km2…

Q: A bridge is proposed across a stream which has a catchment area of 3200 km². Ryve's coefficient of C…

A: Given data : The value of Ryve's coefficient C=10 The value of catchment area A=3200 km2   To find :…

Q: A reservoir is in a region where the average annual precipitation is 3106 mm and normal annual US…

A: Solution Given data Pan Evaporation= 3456 mm Average area= 50 km2

Q: A small watershed has an area of 3 km². The slope of the catchment is 1/150 and the maximum length…

A:

Q: Q.64 The town of Panipat has a low turbidity raw water and is designing its overflow weir at a…

A: given- overflow rate=180 m3/d/mflow rate=0.6 m3/s

Q: Run off from a 10 sq. km. drained area is discharge over a weir 45m. long If rainfall with an…

A: This problem is related to weir and notch topic from fluid mechanics. In this question given…

Q: a) Table shows total rainfall for each month of the year 2012 for a 200 m? sub- basin located…

A: Given data: Area of sub-basin = 200 m2 Runoff generated = 70% Evaporation = 2 mm/day

Q: Determine the minimum discharge in the pipe for this condition. is desired to increase the discharge…

A: According to given data  Two reservoirs have a minimum difference in water-surface elevation of 40 m…

Q: For a homogeneous earth dam 52 m high and 2 m free board, a flow net was constructed and number of…

A: Earth dam details: Dam height = 52 m Freeboard = 2 m Coefficient of permeability of dam, k = 3 x…

Q: Consider the following data for a drain L=50 m, a= 10 m, b=D10.3 m, and k=1x 10 m/s If the drains…

A: Given, L= 50m a = 10m b = 10.3m K = 1×10^-⁵ m/s

Q: Develop the following triangular inflow hydrograph through a linear reservoir: Peak inflow R = 4737…

A: To find outflow

Q: A storm with a uniform depth of 1 in. falls on a 25-acre watershed. Determine the total volume of…

A:

Q: Design an irrigation channel by Kennedy’s theory to carry 5 cumecs of discharge with critical…

A:

Q: Q3: A river catchment has a 2.0 hour unit hydrograph with the ordinates 0,3,11,35,55,66,63,40,22,9…

A:

Q: A reservoir 10m deep has a rectangular weir with a length of 2.5m situated at its short side. When…

A:

Q: A field channel has cultivable commanded area of 2000 hectares. The intensities of irrigation for…

A: A field channel-Cultivable command area-CCA=2000 ha,Intensity of irrigation for wheat…

Q: Average runoff from a 600 km2 catchment area was measured as 60 m3/s for a 3-hr period .lf the…

A:

Q: For a catchment of area 4400 ha, the maximum flood flow will be. Dicken's formula and take CD= 6).…

A: For a catchment area,Catchment area,A=4400 hectare (ha)Dicken's coeffiient,To find maximum flood…

Q: We are to determine the seepage (infiltration) in a 250 hectare reservoir. The reservoir has 0.50…

A: Given, A = 250 ha or 2500000 m2 Qin = 0.50 m3/s Qout = 0.30 m3/s Qi = 0.10 m3/s  P = 20 mm or 0.02m…

Q: A cippoletti weir having L=1.25m maintains its head at 250mm, determine the flow in cu.m per second…

A:

Q: initial capacity of 25,000 acre-ft if the average annual inflow is 40,000 acre-ft ,The useful life…

A:

Q: 4. A reservoir has an average area of 50 km2 over a year. The normal annual rainfall at the place is…

A:

Q: Taal lake has five sub areas covering its entire catchment surface area. Its water surface elevation…

A: AT (total area) = A1 + A2 + A3 + A4 + A5                         = 58.55 + 81.97 + 35.13 + 18.74 +…

Q: A peak flow of a flood hydrograph due 3 to a 6 hour storm is 470 m³/s. The corresponding average…

A: Given- 6 hour stormPeak flow Qf=470 m3/sAverage depth d=8 cm=0.80 mInfiltration loss I=0.25…

Q: A reservoir 15m deep has a rectangular weir with a length of 1.8m situated at its short side. When…

A:

Q: b) A slightly permeable catchment has an area of 40 hectares. The distance from the farthest point…

A: Given: Area, A = 40 hectares Length, L = 2000 m Height, h = 10 m T = 10 years

Q: 3. For a 2 hour, 8 mm/h intensity rainfall, the hydrograph given in Table is observed. The area of…

A: time (hr)024681012141618202224flow rate(m3/sec)81814304538282418141088The area of watershed = 500…

Q: A catchment has a drainage area of 0.025 km², a runoff coefficient of 0.6, an inlet time of 20…

A: This question is from Hydrology.

Q: The following data was collected during a 5-hour storm. If the base flow for the stream is 35 m?/s,…

A: Given: Base flow = 35 m3/s   Also, Let area of basin = 2 km2

Q: 2.2 cm of runoff results from a storm that lasted 24 hours over an area of 195.0 km². Assume all the…

A:

Q: A 12 hour rainfall with uniform intensity of 4 cm/hr produces a storm hydrograph of peak discharge…

A: given- 12 hr rainfallintensity I=4 cm/hrpeak discharge=1000 m3/sbase flow=30 m3/s

Q: A reservoir is to be constructed with the following characteristics: Mean Annual Runoff, MAR =50mm…

A: Weibull distribution P(X -x) = 1-e-(aX/x)b

Q: It is proposed to adopt the dilution method of stream gauging for a river whose hydraulic properties…

A: Given: The width (B) is 45 m. The depth (d) is 2 m. The discharge is 85 m3/sec. The Chezy…

Probability, risk and uncertainty analysis for hydrological design

It gives a framework that is financially critical for finding the exceptional designs of hydrological systems with a reduced cost in total inclusive of the project cost and the disaster mitigation cost. But there would be hardly any assessment of a decent quality damage function. Hence, errors in demonstrating the hydrologic events, incorrect model parameters, and so on may occur. Here, we will discuss a specific hydrological design that of a detention basin for studying and understanding the risk-based procedure, uncertainties, and probability analysis by following a systematic framework.