what is the value for the missing variableSystem description:A reservoir with a surface area of 200,000square meters is fed by a single stream anddischarges through a single outflow structure.During a 30 day period 90.0 mm of rain fell onthe reservoir. The average evaporation rateduring this period was 1.5 mm per day, and thetotal outflow from the control structure of thereservoir was 180,000 cubic meters. All otherinputs and outputs were negligible. Thereservoir volume started at 120,000 cubicmeters of water, and at the end of the 30 dayperiod had reached 130,000 cubic meters.Units: for volume use cubic meters (m³)and for time use days.

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

Answered: what is the value for the missing…

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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7.22. The volumes of water fiowing in a stream in each of the successive months are given below: 2.80, 3.40. 5.70. 18.40, 23.80, 23.70. 20.4, 9.30. 7.40, 6.80, 6.20. and 6.00 Mm. Assuming each day of 30.4 days. determine the minimum capacity of a reservoir if the above water is drawn off at a uniform rate, without any flow over the spillway. (b) The amount of water which should be initially stored to maintain the above uniform draw off. (Ans. 42 Mm'. 22.0 Mm] ing storMge
The plan area of a reservoir is 1 km². The water level in the reservoir is observed to decline by20 cm in a certain period. During this period the reservoir receives a surface inflow of 10 hectare-meters, and 20 hectare-meters are abstracted from the reservoir for irrigation and power. The pan evaporation and rainfall recorded during the same period at a near by meteorological station are 12 cm and 3 cm respectively. The calibrated pan factor is 0.7. The seepage loss from the reservoir during this period in hectare-meters is
The parameters of the Horton equation are fo = 7(cm/st), fc = 1 (cm/st) and the coefficient k = 4 (1/st¹). Accordingly, the total water leaking from an area of 2 ha to the ground in a day (24 hours) find its volume.
Problem 12. (7.76 Chin) During a critical 24-month period the average monthly inflows to a reservoir and the average water demand are given in Table 7.10. Use these data to estimate the minimum required storage volume of the reservoir to overcome that critical period. TABLE 7.10 Average inflow Average demand (m³/s) Average inflow Average demand Average Average inflow (m³/s) demand (m³/s) Month* (m³/s) (m³/s) (m³/s) Month Month 1000 1100 1200 1300 1350 1270 1120 1230 1320 1250 1240 1550 1600 850 1300 17 1400 1400 1400 1130 10 1200 18 11 12 13 19 20 21 1310 1370 1100 1000 1170 1210 1000 1400 1400 940 1000 1300 1260 1400 14 820 1100 22 1200 1400 1400 880 1040 1200 1300 15 23 1100 930 16 1290 24 1080 1000
The average surface area of a reservoir in the month of June is 20 km². In the same month, the average rate of inflow is 10 m³/s, outflow rate is 15 m³/s, monthly rainfall is 10 cm, monthly seepage loss is 1.8 cm and the storage change is 16 million m³. The evaporation (in cm) in that month is
A drainage basin has a area of 7322 km2. The average annual precipitation for this area is 909 mm. The average surface water flow at the outlet of the catchment is 21.4 x 108 m3/year and the average groundwater flow out of the basin is 94.6 mm/year. Assume trailing zeros are significant if present. Determine the annual average evaporation in mm/year. (give your answer to one decimal place)
During a particular 30-days period, the streamflow flowing into a reservoir averaged 5.0 cubic meter per second. Water supply withdrawals from the reservoir averaged 136 mgd (million gallon per day). The only other outflow from the reservoir was 9.4 cm of evaporation from the reservoir water surface. The average water surface area of the reservoir during the 30 days was 3.75 sq.km. The reservoir had 12,560 ac-ft of water in storage at the beginning of the 30-days period. Determine the storage content at the end of the 30 days in units cu.m.
Homework 6- The monthly flows of a river during a critical period are tabulated below. Determine the active storage capacity of a reservoir ( as x10° m’) to be constructed on this river. a) for 100% regulation. b) for 10.5 m/s water supply for each month in June, July, August and September and 7.5 m'/s water supply for each month in the others. Month | O N J F M A M J J A S Q 10 (m³/s) 3 10 6. 14 15 6 6. 10 9. 4 9
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A canal is 80 km long and has an average surface width of 15 m. If the evaporation measured in a class A pan is 0.5 cm/day,find the volume of water evaporated in a month of 30 days.
10.3. For some reason, a lined hazardous-waste landfill was located on top of a confined aquifer. Situated approximately 500 m away is a community water supply well which is pumped at a rate of 104 m³/d. If an earthquake occurs which splits open the liner and pollutes the aquifer, how much time is available to shut down the well and avoid withdrawing contaminated water? Assume the follow- ing aquifer characteristics are applicable: hydraulic conductivity = 50 m/d, porosity = 0.2, aquifer thickness = 5 m, and aquifer width = 50 m. (Courtesy of Jim Hunt.)
The plan area of a reservoir is 1 km2. The water level in the reservoir is observed to decline by 20 cm in a certain period. During this period, the reservoir receives a surface inflow of 10 ha-m and 20 ha-m are abstracted from the reservoir for irrigation and power. The pan evaporation and rainfall recorded during the same period at a nearby meteorological station are 12 cm and 3 cm respectively. The calibrated pan factor is 0.7. The seepage loss from the reservoir during this period in hectare-m is

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