• Write a hydrologic budget equation for the scenarios below, and calculate the change in storage. Also write whether the hydrologic budget is at a loss, a gain, or at steady state. 1. Precipitation = 72 in/yr 2. Evapotranspiration = 59 in/yr 3. Surface water Runoff = 9.6 in/yr 4. Groundwater pumping = 3.4 in/yr

A reservoir with a surface area of 250 hectares had the following averagevalues 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.(b) An ISI Standard evaporation pan at the site indicated a pan coefficient of 0.80 on the basis ofcalibration against controlled water-budgeting method. If this pan indicated an evaporation of 72mm in the week under question, (i) estimate the accuracy if Meyer’s method relative to the panevaporation measurements. (ii) Also, estimate the volume of water evaporated from the lake inthat week.Solution(a) From Table 3.3

Calculate the amount that the pumped water would raise the level of the dead sea by every year assume that there is no loss of sea level by other means.  use volume = surface area x length

by making an appropriate assumptions, give an estimate of the daily city water demand

ii. Calculate the average change of dissolved oxygen per year in the lake over the course of the study. Show your work.

Identify the factors that affect the salinity of a water body.I. EvaporationII. PrecipitationIII. River runoff