A lake has a surface area of 7.0 x 105 m² During a given month, the mean inflow to the lake was 2.5 m³/s. The increase in stored lake volume was observed to be 6.5 x 10 m². Precipitation during the same month was 380 mm and evaporation was 320 mm. Calculate the outflow from the lake for the same month in m/s.

Q: The plan area of a reservoir is 1 km2. The water level in the reservoir is observed to decline by 20…

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Q: A small lake with volume 20.0*10^3 m^3 has no natural pollutant sources. However, a sewage pipe…

A: Given data: C1 (concentration of pollutants in sewage pipe)=100 mg/lVolume of the lake (V) =20,000…

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: A reservoir with as surface area of 300 hectares had the following average values of climate…

A: Given Data:water temperature = 36°CRelative Humidity = 30%Wind velocity u=20km/hK=0.50

Q: The concentration of ultimate BOD in a river entering the first of two lakes connected in series is…

A: Given, Concentration of BOD at entrance = 20 gm/m3 Rate coefficient, k = 0.35 d-1 Flow rate (Q) =…

Q: CHANGE OF STORAGE VOLUME PART A At a particular time, the storage in a river reach is 84000 m. At…

A: Initial storage in river =84000m3Initial inflow, I1=3.1m3sInitial outflow, O1=3.7m3sFinal inflow,…

Q: 3. A lake with a surface area of 4800ha had a water surface elevation of 95m above reference datum…

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Q: A reservoir with as surface area of 300 hectares had the following average values of climate…

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Q: A lake has ah area of 15 km². Observation of hydrological variables during a certain year has shown…

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Q: 1. 500 x 100 m³ of water has been stored in the reservoir of a dam at the beginning of November…

A: Given, Volume of water in reservoir at the start of november month=500×106m3Volume of water in…

Q: A short term conceptual model is developed for lake Superior. This lake has an inflow of 6000 m3/s,…

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Q: Water Resource

A: Given: Period of measurement = 1 year Area of lake = 0.8 km2 Precipitation, P = 1400 mm Surface…

Q: In a given year, a watershed with a drainage area of 200 km² received 1000 mm of rainfall. The…

A: It is required to depth of water at outlet. Q=VtQ=A×hthoutlet=Q×tA Here Q is the flow rate at…

Q: In a stream the base flow is observed to be 30 cumec on July 14, and 23 cumec on July 23. Estimate…

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Q: In reference to the Table below: Day 2 4 5 7 Rainfall, mm 8 13 5 11 11 Water added, -5 -3 7 4 3 mm…

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Q: (b) Water level in a reservoir is dropped with the water withdrawal with an average inflow rate into…

A: we use water budget equation which is based on mass conservation principle. we worked in terms of…

Q: Question A lake has an area of 15 km². Observation of hydrological variables during a certain year…

A: Given data- Lake area A=15 km2, Precipitation P=700 mm/year, Inflow Qinflow=1.4 m3/s, Outflow…

Q: A reservoir with a surface area of 180 hectares had the following average values of parameters…

A: Given Values: Surface Area= 180 hectares Water Temperature=20.5oC Relative Humidity=75% Wind…

Q: 1. The evaporation losses from a reservoir with a surface area of 500 acres are 150 Ac-ft per day.…

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Q: what is the value for the missing variable System description: A reservoir with a surface area of…

A: The area of reservoir = A = 200,000 m2. Time period = T = 30 days. Total rainfall  = p = 90.0 mm =…

Q: The plan area of a reservoir is 1 km². The water level in the reservoir is observed to decline by 20…

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Q: In a catchment area, six rainfall stations are situated as shown in the figure below. Rainfall…

A: In Theissen-polygons method, the average rainfall over an area is calculated as follows, Pavg =…

Q: the Question in the attachment picture ,  Find the following :-  1- Inflow discharge (mm/year) =…

A: From the given hydrological data it is required to find the inflow & outflow discharge, change…

Q: Determine the aquifer characteristics S and T assuming that Eq. (4.28) is valid.

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Q: The plan area of a reservoir is 1 km². The water level in the reservoir is observed to decline by20…

A: Plan area of a reservoir A = 1 km2. The water level in the reservoir is observed to decline by 20 cm…

Q: A catchment area had a flood wave passing through it. After an interval of 5 hours the storage in…

A: given data:- storage of catchment after 5 hour=50ha.m inflow in catchment area=19.5m3/s average out…

Q: Measurements of a water-balance have been made for 1 year period on a lake with an area of 0.9 km2…

A: Given: Period of measurement = 1 year Area of lake = 0.9 km2 Precipitation, P = 1500 mm Surface…

Q: 2. Laguna Lake has a surface area of 708,800 sq.m. Based on collected data, Pasig river flows into…

A: Given that,  surface area = 708800 sqm inflow = 1.5 cu.m/s outflow = 1.25 cu.m/s evaporation rate =…

Q: A reservoir with a surface area of 250 hectares had the following average values of climate…

A: The given data is shown below:

Q: The monthly flows of a river during a critical period are tabulated below. Determine the active…

A: Given DataMonth ONDJFMAMJJASQ(m3/s)10310614156610949

Q: A lake has a surface area of 100 000 m. For a given month, the lake has an inflow of 5 m/s and an…

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Q: 7. When just full, a reservoir has a surface area of 0.8 km², and this area is approximately…

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Q: The monthly pan evaporation measured in a lake for the month of January was 16.7 cm. If the average…

A: Given data:- Monthly pan evaporation in a lake for the month of January = 16.7 cm Pan coefficient Cp…

Q: Q2. A flowrate of 1.2 m³/s is supplied from a drinking water dam lake (reservoir), which has been…

A: The flow of fluid includes movement of an unbalanced fluid. As long as unequalled forces are in…

Q: Problem 2.2: What reservoir capacity is required to produce a uniform yield of 72*106 m³/year for a…

A: Data given Yield = 72×106 m3/year Find: (a) capacity of reservoir

Q: The storage in the lake reach 75x103m3 . During that time the inflow is 15 m3 /s and the outflow is…

A: 1.Find Change in Storage △ △= ( Average Inflow - Average Outflow ) * time Average Inflow = Inflow at…

Q: Problem- Ultimate BOD of a river water sample is 20 mg/L. BOD rate constant (natural log) is 0.15…

A: Given, Ultimate BOD of a river water sample, y1l=20 mgl. BOD rate constant, k = 0.15 day-1 Time, t =…

Evaporation

This topic is majorly taught in various undergraduate and postgraduate degree courses of: