To determine the appropriate water pump for introducing 1800 cubic feet of water into a 60-foot tall tank, it's essential to calculate the flow rate in gallons per minute or cubic feet per minute. The power required can be derived from the formula: static pressure times flow rate equals power, which should then be divided by the pump's efficiency to find the motor power needed. Hydraulic horsepower can be calculated using the formula: pounds of liquid per minute multiplied by head (in feet) divided by 33,000. After completing these calculations, consulting with a pump vendor is recommended to select the most suitable pump for specific conditions. Accurate calculations ensure efficient operation and meet the required water flow.