How do you calculate the evaporation rate of a lake?

The Penman formula for the evaporation rate from a lake is simplified to the following: E 0 = 700 T m / ( 100 − A ) + 15 ( T − T d ) ( 80 − T ) ( mm day − 1 ) where Tm = T + 0.006h, h is the elevation (metres), T is the mean temperature, A is the latitude (degrees) and Td is the mean dew-point.

How long would it take for a lake to evaporate?

displacement of air over the surface, the faster air changes, the faster the evaporation. With no more details, the best I can suggest is one to 2 days.

How do you calculate volume of water loss?

Water loss is equal to the Annual volume distributed minus annual volume consumed authorized. The losses linear index of network is equal to the volume lost in the network per day per network kilometer. This loss is calculated as the difference between the amount available for distribution and volume consumed allowed.

How much water evaporates in an hour?

Average Evaporation On average a water feature will lose ½\% to 1\% of the gallons pumped per hour in a day.

What is the evaporation rate of water in a pond?

On average a pond will lose around 1 inch of water per week to evaporation. In larger ponds up to 3 inches per week of evaporation is normal. Dry and hot weather can increase evaporation another inch or two per week.

What is the average evaporation rate of water?

Average Evaporation On average a water feature will lose ½\% to 1\% of the gallons pumped per hour in a day. Remember to use the actual gallons pumped per hour, not just the size of the pump.

How do you calculate the evaporation loss in a pond?

To be exact, divide Gallons Lost Per Week by Gallons In 1 Inch of Water: 35 / 40 = . 875 Inches per week of evaporation.

How do you calculate water capacity?

To find the capacity of a rectangular or square tank: Multiply length (L) by width (W) to get area (A). Multiply area by height (H) to get volume (V). Multiply volume by 7.48 gallons per cubic foot to get capacity (C).

How much water will evaporate from a pond?

3. Surface Area. Whether a pond is 3 x 5 feet or 20 x 25 feet, it will lose between 1 and 3 inches a week. However, if your water feature has a long stream or waterfall, it will add to the surface area, and therefore add to the water loss within the pond.

How much water evaporates from a pond per day?

How much water evaporates from a lake each day?

If all three ingredients are present, as often occurs in the fall and winter, evaporation rates from the Great Lakes can get as high as 0.4-‐0.6 inches per day.

How do you calculate rate of evaporation?

Subtract the new cylinder reading from the original reading. This reflects the volume of liquid that has evaporated. For example, 500 mL – 495 mL = 5 mL. Divide the volume of liquid that evaporated by the amount of time it took to evaporate. In this case, 5 mL evaporated in an hour: 5 mL/hour.

What is the equation for evaporation?

The equation for evaporation given by Penman is: where: which (if the SI units in parentheses are used) will give the evaporation Emass in units of kg/(m²·s), kilograms of water evaporated every second for each square meter of area.

What is the average rate of evaporation?

Averaged across the entire Earth, water evaporates from the surface at a rate of about 3 millimeters per day (about 1/8 of an inch). Over the tropical oceans, the value is much larger; over cold surfaces, it is much lower; and over deserts it is almost zero, since there is little or no water to evaporate.

What is the formula for evaporation rate of water?

The following formula is used to calculate an evaporation rate of water. gh = (25+19*v)* (A)* (Xs-X) Where gh is the evaporation rate (kg/h) v is the velocity of air above the surface (m/s)