1.The evaporation losses from a reservoir with a surface area of 500 acres are 150 Ac-ft per day. Ifthe average outflow from the reservoir is 50 cfs during the day, determine the change in waterlevel from the reservoir (in feet, indicate whether it increases or decreases). You may assumethere are not any streams flowing into the reservoir.If the reservoir described above received precipitation of 3 inches over the course of a day,calculate the change in water level (in feet, indicate whether it increases or decreases).

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Answered: 1. The evaporation losses from a…

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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The storage in the lake reach 75x103m3 . During that time the inflow is 15 m3 /s and the outflow is 21 m3 /s. after 3 hours the inflow and outflow are 23 m3 /s and 25 m3 /s. determine the ∆? during the 3 hours period and the storage volume after another 3 hours.
Estimate the constant flow rate of withdrawal from a 15 km² reservoir in a month (30days) during which the reservoir level dropped by 1 m despite an average inflow into the reservoir of 0.95 * 10 m³ /day. During the month, the average seepage loss from the reservoir was 4.5cm, the total precipitation on the reservoir was 19.5cm, and the total evaporation was 7.5cm.
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 level of water in the reservoir is 1.25 m. If there is a rainfall of 38 cm occurring in a month, during this period evaporation as measured by the class A pan is 32 cm. What is the level of water in m at the end of the month.
- A reservoir with a surface area of 250 hectares had the following average values of climate parameters during a week: Water temperature = 20˚C, Relative humidity = 40%, Wind velocity at 1.0 m above ground surface = 16 km/h. Estimate the average daily evaporation from the lake by using Meyer's formula.
Estimate the constant rate of withdrawal from a 1375 ha reservoir in a month of 30 days during which thereservoir level dropped by 0.75 m in spite of an average inflow into the reservoir of 0.5 Mm^3/day. During themonth, the average seepage loss from the reservoir was 2.5 cm, total precipitation on the reservoir was 18.5 cmand the total evaporation was 9.5 cm.
Estimate the constant rate of withdrawal from a 1375 ha reservoir in a month of 30 days during which the reservoir level dropped by 0.75 m in spite of an average inflow into the reservoir of 500,000 m 3 /day. During the month the average seepage loss from the reservoir was 2.5 cm, total precipitation on the reservoir was 18.5 cm and the total evaporation was 9.5 cm. (answer must be in m^3/s with step by step solution)
a) Estimate the constant rate of withdrawal from a 1375 ha reservoir in a month of 30 days during which thereservoir level dropped by 0.75 m in spite of an average inflow into the reservoir of 0.5 Mm3 /day. During themonth, the average seepage loss from the reservoir was 2.5 cm, total precipitation on the reservoir was 18.5 cmand the total evaporation was 9.5 cm.
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.
Solution please
Q.4a.
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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