6. Long Pond has a surface area of 3.5 km², and for a given month the pond has an average inflow of 3.4 m/s and an outflow of 2.75 m²/s. There is a 0.35 m storage change in the lake level. If a precipitation gauge recorded 52 cm for the given month, determine evaporative loss (in cm) for the lake during that time. 7. A swimming pool (5 m x 8 m x 3.5 m) has a small leak at the bottom. You are provided with measurements on rainfall, evaporation, and water level on a daily basis for 10 days. As an engineering technologist, use the water balance to determine the average daily leakage out of the swimming pool in litres per day. Assume the pool is exactly 3.5 m deep on day 1. Day Evaporation (cm) Rainfall (cm) Measured Level (m) 1 1.0 3.5 2 1.0 3 1.25 4 3.0 5 1.25 6 1 7 1.25 8 4.5 1.25 10 1 2.85

6. Long Pond has a surface area of 3.5 km², and for a given month the pond has an average inflow of 3.4 m/s and an outflow of 2.75 m²/s. There is a 0.35 m storage change in the lake level. If a precipitation gauge recorded 52 cm for the given month, determine evaporative loss (in cm) for the lake during that time. 7. A swimming pool (5 m x 8 m x 3.5 m) has a small leak at the bottom. You are provided with measurements on rainfall, evaporation, and water level on a daily basis for 10 days. As an engineering technologist, use the water balance to determine the average daily leakage out of the swimming pool in litres per day. Assume the pool is exactly 3.5 m deep on day 1. Day Evaporation (cm) Rainfall (cm) Measured Level (m) 1 1.0 3.5 2 1.0 3 1.25 4 3.0 5 1.25 6 1 7 1.25 8 4.5 1.25 10 1 2.85

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 reservoir in Tisa, Labangon is supplied from a watershed having an area of 24 sq.km. The surface area of the reservoir is only 6% of the watershed area. For the month of July the rainfall was 35 mm. Assuming a rainfall coefficient of 82% and the evaporation from a free water surface to be 28 mm during the month. Compute the loss in the watershed in cu.m.
6. Runoff from a 200 mile² catchment drains into a reservoir than has an average surface area of 4000 acres. The reservoir is to be used for municipal water supply. Annual rainfall over the watershed is 40 inches and the annual runoff is 2 inches. Evaporation from the reservoir averages 40 inches per year. If the surface area of the reservoir is roughly constant with depth, how much will the reservoir depth change in one year?
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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
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