Fountain Engineering and Conversion Data2018-12-03T22:08:51+00:00

Fountain Engineering and Conversion Data

At Long Island Fountain, we want to make sure you have the resources necessary to effectively design and install your fountain or waterfall and make educated decisions along the way. The fountain design engineering and conversion data below can help you quickly determine the correct flow, pressure, volume, weight, etc., for your project. We’ve also included a pipe flow guide, a gpm requirements chart for waterfalls and more.

As always, if you need help designing or planning out your fountain, turn to our helpful team. The professionals at Long Island Fountain have helped clients throughout the U.S. and abroad construct the fountains of their dreams. Give us a call at (631)-467-5115 or fill out our contact form to start the process of designing or building your fountain or waterfall.

Quick Conversion Factors

Covert FromMultiply ByConvert Into
Flow
USGPM.0631Litres/second
USGPM3.785Litres/minute
USGPM227.3Litres/hour
Litres/sec.15.85USGPM
Litres/min..264USGPM
Litres/hour.0044USGPM
Cu Ft/sec.448.83USGPM
Cu M/min264.2USGPM
Pressure
PSI6.895KPA
PSI2.310Ft. Head
KPA.145PSI
KPA.334Ft. Head
Ft. Head2.990KPA
Ft. Head0.433PSI
Ft. Head0.305Metric Head
Ft. Head3.280Ft. Head
Volume
U.S. Gals.231.0Cu. In.
U.S. Gals..1337Cu. Ft.
U.S. Gals.3.785Litres
U.S. Gals..0038Cu. Metres
Litres.2642U.S. Gals
Litres.0353Cu. Ft.
Cu. Metres35.311Cu. Ft.
Cu. Metres264.2U.S. Gals
Cu. Ft7.48U.S. Gals
Cu. Ft28.329Litres
Cu. Ft0.028Cu. Metres
Weight
US Gals8.35Lbs.
Litres2.2Lbs.
Cu Ft of water62.46Lbs.
Cu. M. water22.06Lbs.
Length
Inches2.54Centimeters
Feet.3048Metres
Metres39.37Inches
Metres3.28Feet
Horsepower
HP.746Kilowatts
HP745.7Watts
Kilowatts745.7Watts
US Pump Charts
GPM (60 cy).80GPM (50 cy)
Head (60 cy).60GPM (50 cy)

Pipe Flow Guide

Pipe SizeFlow usgpmPipe SizeFlow usgpm
1 1/2″10 – 255″200 – 500
2″20 – 506″330 – 800
3″55 – 1358″700 – 1300
4″115 – 27510″1250 – 1750

Waterfall Requirement

(per lineal foot)

SpillgpmMaximum fall height
0.1″51″
0.2″103″
0.3″154″
0.4″205″
0.5″256″
0.6″307″
0.7″358″
0.8″408.5″
0.9″459″
1.9″5010″

Example: To determine the gpm requirements to a 10 ft. long waterfall with a 3 ft. fall height; specified with 0.3″ spill thickness, multiply 10 x 15 = 150 gpm

Note: Turbulent water may require greater flow. Lower pool should be approximately two times larger than upper pool to handle start-up and shut-down variables.