# How do you calculate well capacity?

## How do you calculate well capacity?

The Specific Capacity of a well is simply the pumping rate (yield) divided by the drawdown (Figure 1). It is a very valuable number that can be used to provide the design pumping rate or maximum yield for the well.

## How many gallons of water is in a dug well?

A standard 6-inch diameter drilled well can store 1.5 gallons of water per foot. If you know the depth of the well, the level of the water and pump depth, you can figure out the water storage capacity.

How do you calculate well bore volume?

First, subtract the depth to water from the overall depth of the well. For example, if our well was ten feet deep and it was a foot to water, we’d have nine feet of water. Next, use the following equation: pi (or 3.15 if you’re not using a calculator) times the square of your radius times the height of your well.

How do you calculate gallons of water in a well?

For example, a drilled well that is 6 inches in diameter holds 1.5 gallons of water per foot. If the well currently holds 50 feet of water, the total water volume would be calculated as follows: 1.5 gal/ft x 50 ft = 75 gallons total water volume.

### How is transmissivity calculated?

Define transmissivity mathematically. We have T = KhD where T is the transmissivity, Kh is the average horizontal conductivity and D is the aquifer thickness. Determine the units of measure for transmissivity. The horizontal conductivity is measured in length per unit time and the aquifer thickness is a length.

### How much water will a 6 inch pipe hold per foot?

Volume and Weight of Water for Common Pipe Sizes

Pipe Size Volume
in in3/ft gallons/ft
4″ 150.8 in3 0.6528 gal
5″ 235.62 in3 1.02 gal
6″ 339.29 in3 1.469 gal

How many feet of water should be in a well?

Drilling a Water Well for household use will usually range from about 100 feet to 500 feet deep, but… When drilling a new well for your home or business, the depth of the well depends on the geology and underground water levels of the area.

How do you calculate the volume of a bottle?

Knowing the density of the fluid inside, one can then do a simple calculation of volume = mass/density to find the volume in each bottle. That way, the volume is measured without significant loss of the end product. That keeps the small breweries happy.

#### How to calculate the volume of a well casing?

Metric Calculation of Well Casing Volume. Using the formula for the volume of a cylinder . For a well casing that is 15cm in diameter and 1 meter in height: Radius r = 1/2 the diameter or 7.5 cm . Vcyl = pi x r2 x h . Vc in cc = pi x (7.5cm)2 x (100cm)

#### How to calculate the specific capacity of a well?

A 30 cm well penetrates fully an infinite non-leaky artesian aquifer having T = 6.5 × 10 5 lpd/m, S = 0.0004. Construct specific capacity curves for the well for t = 1 hr, 1 day, 1 month, 1 year and 2 years of draught, when the well is pumped at the rate of- (a) 600 1pm, (b) 1200 1pm, and (c) 2000 1pm.

How are dug wells dug in the ground?

Dug wells are holes in the ground dug by shovel or backhoe. Historically, a dug well was excavated below the groundwater table until incoming water exceeded the digger’s bailing rate.

How to calculate volume of water in a static head well?

Static Head (h) gallons = (1.5 gallons per foot) x (h) measured in feet. Here’s a simple example to calculate the volume of water in the static head of a particular 100 foot deep well. Remember that for your well you’ll need to plug in the actual measurements. (d) = total well depth = 100 ft.