A reservoir has an average area of 50 km2 over a year. The normal annual rainfall at the place is 120 cm and the class A pan evaporation is 240 cm. Assuming the land flooded by the reservoir has a runoff coefficient 0.4, estimate the net annual increase or decrease in the stream flow as a result of the reservoir.

Q: Question:- Estimate the 7-day low flow with 50 year return period for ungauged abstraction point at…

A: Given:- The cross-sectional area of the catchment = 1750 km2  The time period = 7-day low flow with…

Q: Problem 2. The evaporation losses from a reservoir of constant surface area of 500 hectares are 250…

A: Given data: Surface Area of reservoir = 500 hectares. Evaporation loss = 250 acre-ft per day. Out…

Q: A reservoir had an average surface area of 20 km during June 1982. In that month the mean rate of…

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Q: Consider two reservoirs, A and B, connected in series with reservoir A situated upstream of…

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Q: During a 4 hr storm the rainfall lost due to evapo-transpiration is 0.15 cm/hr. The infiltration…

A: Given: 4 hr storm  Losses = 0.15cm/hr Infiltration capacity= 0.35cm/hr Catchment area= 10km2 Run off…

Q: drainage basin has an area of 9350 km2. The average annual precipitation for this area is 827 mm.…

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Q: The daily record of rainfall over a catchment area is 0.2 million cubic meters. It has been found…

A: Given: Total rainfall over the catchment (QR) = 0.2 million cubic meter. QR = 0.2 x 106 m3 The head…

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

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Q: If the runoff from an area of 22 m^2 is 16.5 L/min, determine the infiltration capacity under a…

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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…

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Q: 4. 1.25×104 m³ of runoff occurs from a 100-ha plot of uniformly sloping land in a certain half-hour…

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Q: 17. The inflow inters to a lake (50km2) during a (6 months) is (25 m3/sec), the precipitation over…

A: Evaporation is the repeat process and here the water changes to vapor or gas. Formula used:…

Q: Q2/ A farm has area 50 donum. Cu =16.1 mm/day, farm losses is 15% of net depth. If the time…

A: Given Data: Area of farm is A=50 donum. Consumptive use is Cu=16.1 mm/day. Farm Losses is 15% of net…

Q: A catchment area of 120 sq km has three distinct zones, namely zone A with an area of 61 sq.km and…

A: Given data,  Total area = 120 km² Zone A area = 61 km²  & Runoff = 52 vm Zone B area = 39 km²…

Q: During a month, the average rate of inflow and outflow in a reservoir of surface area of 20 km2 is…

A: Given: Surface area, A = 20 km2 Average rate of inflow, I = 10 m3/s Average rate of outflow, O = 15…

Q: A reservoir has average surface area of 20km². Mean rate of inflow is 10 m²/S mean outflow is 15…

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Q: H.W: The drainage area of a river in a city is 12000 km2. If the mean annual runoff is determined to…

A: Given Area of river=12000km2 Mean annual runoff=140 m3/s Average annual runoff= 1m

Q: 6. Long Pond has a surface area of 3.5 km², and for a given month the pond has an average inflow of…

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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: catchment's outlet has an annual discharge of 0.80 m^3/a. It's size is 250 km^2. The annual…

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Q: Solve the problem using the NRCS method for a watershed located right outside New York City, New…

A: Given, Am = 1.29 sqm HSG B = 65% HSG C = 25% HSG D = 10%

Q: The Occoquan Reservoir watershed area is 623 sq mi. In a given month, the watershed received 5.5…

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

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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: Long Pond has a surface area of 3.5 km2, and for a given month the pond has an average inflow of 3.4…

A: Given data the surface area of 3.5 km2=3.5x106 m2 inflow= 3.4 m3/s outflow = 2.75 m3/s storage…

Q: Q2: A lake with a surface area of 5km² had a water surface elevation of 103.2m above datum at the…

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

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Q: Data Date Rainfall intensity_(mm/d) Jan-21 3.38 Feb-21 3.58 Mar-21 5.80 Apr-21 2.05 May-21 2.30…

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Q: For a certain catchment with an area of 1000000m2, the average precipitation was 7cm and…

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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: A reservoir covers an average surface area of 40 km< with an average depth of 25 m. The inflow to…

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Q: A waste water stream (flow = 2 m3/s), ultimate BOD = 90 mg/l is joining a small river (flow = 12…

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Q: Lake Kickapoo, TX, is approximately 1.6E1 km in length by 2.7E0 km in width. The inflow for the…

A: The inflow, I is 3.26 m3/sec The outflow, O is 2.93 m3/sec The total monthly precipitation, P is 1.9…

Q: During a month, the average rate of inflow and outflow in a reservoir of surface area of 20 km2 is…

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Q: A lake with a surface area of 5km² had a water surface elevation of 103.2m above datum at the…

A: