A catchment has four sub-areas. The annual precipitation and evaporation from each of the sub-areas are given below. Assume that there is no change in the groundwater storage on an annual basis and calcu- late for the whole catchment the values of annual averz ge

A catchment has four sub-areas. The annual precipitation and evaporation from each of the sub-areas are given below. Assume that there is no change in the groundwater storage on an annual basis and calcu- late for the whole catchment the values of annual averz ge

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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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 total of 10 mm of rainfall fell on a lake with a surface area of T km^2 in June 1996. Relatedthe average flow rate of the stream entering the lake per month is 12 m^3 / s, while the average flow rate of the stream leaving the lake is7m^3/s dir. Monthly evaporation height measured in an evaporation pan near the lake during this month45mm and the pan coefficient in the relevant month is 0.75 according to what is the volume of water in the lake in this monthcalculate that it has changed up to?(T=159)
zain IQ ZAIN IQ 2_54583630275... -> Q1) Estimate the constant rate of withdrawel in (m3/sec) from a (1375 ha) reservior in a month of (30 days) during which the reservior level dropped by (0.75m) in spite of an average in flow into reservoir of (0.5 McM/day) During the month the average seepage losses from reservior was (2.5 cm) total precipitation on the reservior was (18.5cm) and the total evaporation (9.5cm)? Q2/ The normal annual precipitation at station is differs from that at station E by 50% from normal annual precipitation at station E, the normal annual precipitation of stations A, B, C and D are respective 120,97,71 and 107cm, During particular storm the precipitation recorded by stations A, B, c and C are 12.6, 8,6 6,2 and 9,8 cm respectively. The station E was inoperative during that storm. Estimate the rainfall at station E during that storm? Q3/ A square of 100km2 is gauged by three rainfall stations. Two stations at the corner of area and other at on equal distance on…
A catchment has four sub-areas. The annual precipitation and evaporation from each of the sub-areas are given below. Assume that there is no change in the groundwater storage on an annual basis and calcu- late for the whole catchment the values of annual averz ge Sub-area Area Annual precipitation Annual evaporation Mm? mm mm 10.7 1030 530 3.0 830 438 8.2 900 430 17.0 1300 600 A) 0.581 B) 0.158 C) 0.518 D) 0.851 ABCD © O O O
Problem: A catchment has four sub-areas. The annual precipitation and evaporation from each of the sub-areas are given below. Assume that there is no change in the groundwater storage on an annual basis and calcu- late for the whole catchment the values of annual average (i) precipitation, and (ii) evapo- ration. What are the annual runoff coefficients for the sub-areas and for the total catch- ment taken as a whole? Sub-area Annual precipitation Annual evaporation Area Mm² mm mm A 10.7 1030 530 B 3.0 830 438 C 8.2 900 430 D 17.0 1300 600
1.6. A lake with a surface area of 1260 acres was monitored over a period of time. During a one-month period, the inflow was 36 cfs, the outflow was 30 cfs, and a 1.6-in. seepage loss was measured. During the same month, the total precipita- tion was 4.3 in. Evaporation loss was estimated as 6.0 in. Estimate the storage change for this lake during the month.
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.
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
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
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.
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)
Q2: At the beginning of a given day a reservoir has a surface area 30 km². The inflow to the reservoir during the day was measured to be 65 m³/s. In addition, the day was dry and the seepage is 5% of the inflow. Assume the area of the reservoir does not change significantly by the end of the day. Determine the reservoir evaporation in mm/day where the reservoirs level is decreased 3.5 cm and the pan coefficient is 0.8?