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  2. Cubic foot - Wikipedia

    en.wikipedia.org/wiki/Cubic_foot

    The IEEE symbol for the cubic foot per second is ft 3 /s. [1] The following other abbreviations are also sometimes used: ft 3 /sec; cu ft/s; cfs or CFS; cusec; second-feet; The flow or discharge of rivers, i.e., the volume of water passing a location per unit of time, is commonly expressed in units of cubic feet per second or cubic metres per second.

  3. Mud weight - Wikipedia

    en.wikipedia.org/wiki/Mud_weight

    In the oil industry, mud weight is the density of the drilling fluid and is normally measured in pounds per gallon (lb/gal) (ppg) or pound cubic feet (pcf) . [1] In the field it is measured using a mud scale or mud balance. Mud can weigh up to 22 or 23 ppg. A gallon of water typically weighs 8.33 pounds (or 7.48 ppg).

  4. Acre-foot - Wikipedia

    en.wikipedia.org/wiki/Acre-foot

    As the name suggests, an acre-foot is defined as the volume of one acre of surface area to a depth of one foot.. Since an acre is defined as a chain by a furlong (i.e. 66 ft × 660 ft or 20.12 m × 201.17 m), an acre-foot is 43,560 cubic feet (1,233.5 m 3).

  5. Fixture unit - Wikipedia

    en.wikipedia.org/wiki/Fixture_unit

    The relationship between gallons per minute (gpm) and fixture unit is not constant, but varies with the number of fixture units. For example, 1000 FU is equivalent to 220 US gallons per minute (0.014 m 3 /s) while 2000 FU represents only 330 US gallons per minute (0.021 m 3 /s), about 1.5 times the flow rate.

  6. Discharge (hydrology) - Wikipedia

    en.wikipedia.org/wiki/Discharge_(hydrology)

    The units that are typically used to express discharge in streams or rivers include m 3 /s (cubic meters per second), ft 3 /s (cubic feet per second or cfs) and/or acre-feet per day. [2] A commonly applied methodology for measuring, and estimating, the discharge of a river is based on a simplified form of the continuity equation.

  7. Volumetric flow rate - Wikipedia

    en.wikipedia.org/wiki/Volumetric_flow_rate

    The area required to calculate the volumetric flow rate is real or imaginary, flat or curved, either as a cross-sectional area or a surface. The vector area is a combination of the magnitude of the area through which the volume passes through, A , and a unit vector normal to the area, n ^ {\displaystyle {\hat {\mathbf {n} }}} .

  8. Water metering - Wikipedia

    en.wikipedia.org/wiki/Water_metering

    In most of the world water meters are calibrated in cubic metres (m 3) or litres, [1] but in the United States and some other countries water meters are calibrated in cubic feet (ft 3) or US gallons on a mechanical or electronic register. Modern meters typically can display rate-of-flow in addition to total volume.

  9. Cubic metre per second - Wikipedia

    en.wikipedia.org/wiki/Cubic_metre_per_second

    imperial gallons per second ≈ 264.172 051 US gallons per second ≈ 35.314 454 cubic feet per second: ≈ 1.305 cubic yards per second ≈ 25 566.497 acre-feet per year ≈ 1 113 676 621 cubic feet per year ≈ 0.007 570 909 16 cubic miles per year