How To Measure Fish Pond Depth and Garden Fish Pond Volume
Fish Pond Depth Is An Often Misunderstood Aspect Of Pond Keeping
Pond depth is one of those factors in pond building that is much talked about and misunderstood, particularly by those people who "mix" with dedicated koi keepers. So often you must ask yourself do I want a koi pond in which I want to raise a prize winning koi or do I want a backyard fish pond containing koi around which I can sit with the family and enjoy the scene. If you belong to the dedicated koi keeper class then yes depth of your pond should not be less than 4 ft and preferably 6 feet. This is quite simply to provide space to swim and exercise.
For most garden ponds 3 feet is deep enough and even less suits many situations.
In cold climates shallow ponds freeze and in hot climates they get very warm. In shallow ponds you see MUCH more of your fish and their behavior.
Most aquatic plants prefer shallow ponds but many water lilies require 3
feet of water to grow to their best showing. Deep ponds cost much more than
shallow ponds ... is this the reason for many deep pond recommendations or
am I skeptical?
If you need to calculate the pond's volume .... the volume of any pond is the surface area multiplied by its average depth. The more accurately you know both these numbers the more accurate your calculation will be.
If you have a pond and the depth is not constant you can make a very good estimate by taking a stick and mark it in intervals of say 3 inches with an indelible ink pen. At 10 different places in the pond insert the stick and record the depths (get 10 numbers).
Add the numbers together and divide by 10.
Use this answer as the average depth of the pond.
If your pond is of equal depth and the same cross section then you can accurately measure the pond volume using your pond pump. Do the following ...
Make Sure You Measure The Pond Depth accurately To Start With ...
Using the pond pump and a pipe time how long it takes to fill say a 5 gallons container to the 5 gallons mark (not much more not much less).
Now pump water out of the pond for say 5 minutes
Record the depth after pumping out water
The pond's volume is then calculated as follows:
S = depth of pond in inches or any unit before pumping starts
D = inches or any unit of water pumped out of pond when pumping
i.e. difference between start depth and final depth.
T1 = time to fill the container
T2 = time pump was run to pump out water
V = volume of container
Pond Volume Calculation ...
Volume of pond = (S x V x T2) DIVIDED BY (D x T1)
Example:
S = 30 inches
D = 3 inches
T1 = 1 minute
T2 = 10 minutes
V = 3 gallons
Pond volume = (30 x 3 x 10) divided by (3 x 1)
= (900) divided by (3)
= 300 gallons
If container was in gallons then final pond volume is in gallons. If container was in liters then final pond volume is in liters
It does not matter whether you measure depth in inches or any other units.
Use the pump to pump out water in the same position used to fill the container.
Another Way To Measure Fish Pond Volume ...
Measuring pond volume in USA .... Burt Ballou pointed out that in USA most homes have a water meter which can be accessed readily.
This makes pond volume measurement simple if you start with an empty system. Just make sure that while filling the pond nobody uses then toilet, takes a shower does the washing up etc. All you have to do is then record the start and finish readings from the meter to get a very accurate indication of pond volume.
If you are looking for an easier way to measure fish pond depth then click my pond calculators to further information ... Free Pond Calculators ... Save Money ... Make Informed Choices ...
