The annual evaporation from a lake is estimated to be 0.016 km³. If the lakes average surface area is 10.0 km², what is the daily evaporation rate in centimeters and inches?

7. (Mass balance, A river with 400 mg/L of salts (a conservative substance) and an upstream flow of 25.0 m³/s receives an agricultural discharge of 5.0 m³/s carrying 2,000 mg/L of salts. The salts quickly become uniformly distributed in the river. A municipality just downstream withdraws water and mixes it with enough pure water (no salt) from another source to deliver water having no more than 500 mg/L salts to its customers. What should be the flowrate mixture ratio F of pure water to river water?

Q1/ If concentration of total dissolved salts in Shatt Al- Arab water C = 6000 (p.p.m) and Shatt Al-Arab discharges its water into Arabian Gulf at flow rate Q=200 (m³/s). Calculate weight of Total Dissolved Salts carried by water of Shatt Al-Arab annually into water of the Gulf. ONL

Given the earth dam and flow net shown, calculate the seepage loss under the dam if the water height behind the dam is 15ft. The soil has a hydraulic conductivity of 100 ft/year. EL 0 EL-10 Water Level 730 ft³/year O 650 ft³/year 500 ft³/year 890 ft³/year Water Level Yail=130 lb/ft³ Impervious Stratum

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.