Following observations were made for conducting a water budget of a reservoir over a period of one month:- Average surface area = 10 km² Mean surface inflow rate = 10 cumec Mean surface outflow rate = 15 cumec Rainfall 10 cm = Fall in the reservoir level = 1.5 m Pan evaporation = 20 cm Assuming the pan-factor as 0.7, estimate the average seepage discharge from the reservoir during the month.

Following observations were made for conducting a water budget of a reservoir over a period of one month:- Average surface area = 10 km² Mean surface inflow rate = 10 cumec Mean surface outflow rate = 15 cumec Rainfall 10 cm = Fall in the reservoir level = 1.5 m Pan evaporation = 20 cm Assuming the pan-factor as 0.7, estimate the average seepage discharge from the reservoir during the month.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

A lake with a surface area of 740 acre was monitored over a period of month . The following data was recorded . Inflow is 30 cfs . outflow is 27 cfs . Seepage loss is 0.133ft . Total monthly precipitation is 5.2 inch . Evaporation loss is 0.125 in./day Assume 1 month (30 days) a) Estimate the change in storage level (inch) for this lake during this month b) Based on your answer in part (a) is the water level in the lake rising or falling
5. During a given year. the following hydrologic data were collected for a 2750-km2 basin: total precipitation: 695 mm, total combined loss due to evaporation and evapotranspiration: 325 mm estimated groundwater outflow (including groundwater depletion):175 mm and mean surface runoff: 185 mm. what is the change in volume of water in hm3 remaining in storage in the basin during the elapsed time?. A) 72.5 B) 52.7 C) 27.5 D) 725 E) None of the above
A catchment has 4 sub areas (see table below). The annual precipitation andevaporation from each of the sub areas are given below. Assume that there is no change inthe groundwater storage on annual basis and calculate for the whole catchment the valuesof annual averageA. Precipitation (Ans. P ave = 1105.167 mm)B. Evaporation (Ans. E ave = 532.416 mm)C. What are the annual run-off coefficients for the subareas and for the totalcatchment area as a whole? (Ans.ratio = 0.508)
A reservoir has average water spread over 4km^2. During the two months period starting in February 2021, surface inflow is 240 ha-m , surface outflow is 192 ha-m, & the change in storage is -72 ha-m. Given the rainfall data provided below, Find the following. 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 Jun-21 13.66 The accumulated precipitation using mass curve is cm The estimate reservoir losses are ha-m
The catchment area of an irrigation reservoir is 60 km^2. The constant water spread during October 2006 was 2 km^2. During that month, the uniform precipitation over the catchment was recorded to be 100 mm, 50% of precipitation reaches the reservoir. Outflow at a constant rate of 1 m^3/sec was recorded in the month of October. Assuming seepage losses to be 50% of the evaporation losses. Find out the daily rate of evaporation (mm/day/m*2) for October 2006. (Note: The number of days in the month of October is 31 days) ≈3.441 mm/day/m*2 ≈8.825 mm/day/m*2 4.344 mm/day/m*2 ≈6.445 mm/day/m*2
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)
In reference to the Table below: Day 1 2 3 4 5 6 7 Rainfall, mm 11 8 13 9 11 Water added, -5 -3 0 7 4 mm Determine the lake evaporation in mm, if the pan coefficient is 0.75 and the area of the lake is 340 ha. 47.25 44.1 55.3 59.25 None of the choices
HELP ME ASAP PLS Consider: Round off to three (3) decimal places Answer properly 9. The catchment of the reservoir is 30 km². Uniform precipitation of 0.75 cm/h for 4 hours was observed on a particular day. 60% of the runoff reached the reservoir. A river carrying a flow of 1.0 m³/s is taken from the reservoir. The rate of evaporation was 0.65 mm/h/m². Assuming seepage loss to be 40% of evaporation loss, find the change in reservoir level (in meters) for 8 hours in the next, if the water spread of the reservoir was 0.95 km².
Question1: (a) Given a rainfall duration of 1-hour and an effective precipitation of 1.5 cm and the hydrograph in the table below, determine the 1-hour unit hydrograph. Time (hrs) 0 1 2 3 4 5 6 7 8 9 10 Flow (m³/s) 100 100 220 512 585 460 330 210 150 105 100 (b) Use the Unit Hydrograph from the part (a) to determine the hydrograph resulting from the following rain event. Time (hrs) Excess Rainfall (cm) 0.3 1.4 0.9 1 2 3
(a) For a given year, a catchment with an area of 3000 km? received 160 cm of precipitation. The average flow rate measured in the river draining the catchment was 40 m³/s. Find DRO" (i) How much runoff reached the river for the year (in m')? TRO = P+A (ii) Estimate the amount of water lost due to the combined effects of evapotranspiration and infiltration etc (in m')? (iii) How much precipitation is converted into river runoff (in percentage)? 26. (iv) What is the ratio of runoff to precipitation?
Q1: A lake had a water surface elevation of 103.7 m above datum at the beginning of a certain month. In that month the lake received an average inflow of 6 m/s from surface runoff. In the same period the outflow from the lake had an average value of 6.5 m/s. Further, in that month, the lake received a rainfall of 145 mm and the evaporation was estimated as 6.1 cm. Calculate the water surface elevation of the lake at the end of the month. The average lake surface area can be taken as 5000 ha and the catchment area is 35000 ha.
Civil Engineering Hydrology A certain lake has a surface of 708,000 sq m. For a given month ( assumed 30 days ) the lake has an inflow of 1.5 m² /s and an outflow of 1.25 m/s and a storage change of +690,000 m and was recorded. If a precipitation gage recorded a total of 22.5 cm for this month ,determine the evaporation loss in cm for the lake .Assume seepage loss is negligible