Convert acre-foot/year [ac*ft/y] to gallon (UK)/second Online | Free flow Converter

t/Year [ac·ft/y]


Acre-foot per year [ac·ft/y] is a unit of volumetric flow rate commonly used in hydrology, water resource management, and irrigation planning. One acre-foot represents the volume of water required to cover one acre of land to a depth of one foot, which is approximately 1,233 cubic meters or 325,851 gallons. When expressed per year, ac·ft/y quantifies the total water volume delivered, used, or available over a 12-month period. This unit is particularly useful for managing large-scale water supplies, such as reservoirs, rivers, or agricultural irrigation systems, providing a standardized measure to estimate annual water availability and consumption. For example, an irrigation system supplying 500 ac·ft/y delivers enough water to cover 500 acres to a depth of one foot over a year. It is also used to plan municipal water supply, allocate water rights, and forecast long-term resource needs. Compared to daily or monthly flow units, acre-foot per year gives a macro-level perspective, suitable for long-term planning, resource management, and sustainability assessments. Using ac·ft/y enables engineers, hydrologists, and policymakers to monitor, manage, and optimize water resources, ensuring efficient allocation and conservation for agricultural, municipal, and industrial use.


Second [gal (UK)/s]


Gallon per second (UK) [gal (UK)/s] is a unit of volumetric flow rate that measures the volume of liquid passing through a system every second, using the UK (Imperial) gallon as the standard. One UK gallon equals approximately 4.546 liters, so gal (UK)/s quantifies how many gallons flow each second, making it suitable for high-flow and large-scale fluid systems. This unit is commonly used in hydraulics, water distribution networks, industrial processes, and emergency systems where rapid fluid movement must be monitored and controlled accurately. For instance, in dam releases or large municipal water supply systems, gal (UK)/s helps engineers design pipelines, pumping stations, and valves to deliver massive volumes efficiently and safely. In industrial manufacturing, it regulates liquid flow in processes such as cooling, chemical mixing, or fuel transfer, ensuring operational safety and efficiency. Compared to gal (UK)/min or gal (UK)/h, gallon per second provides real-time measurement and control of very high-volume flows. Using gal (UK)/s allows engineers, technicians, and operators to measure, manage, and optimize large-scale fluid transport, ensuring reliability, safety, and performance in critical municipal and industrial applications.



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