acre-foot

Thân thiện

An acre-foot of water fills a small reservoir.

Definition

1. Noun:
   • A unit of volume: An "acre-foot" is a unit of volume used primarily in the United States to measure large quantities of water. It is defined as the volume of water required to cover one acre of surface area to a depth of one foot.

Usage

• The term "acre-foot" is used almost exclusively in contexts related to water management, irrigation, reservoir capacity, and hydrology. It is a standard measurement for discussing water resources, usage, and storage.

Examples

• Noun:
  • The new reservoir has a capacity of 50,000 acre-feet.
  • Farmers in the valley have an annual water allocation of 2.5 acre-feet per acre of land.
  • The project aims to conserve 10,000 acre-feet of water each year.

Advanced Usage

• "Acre-foot per year (AFY)": A common unit for measuring a continuous flow or annual water usage.
  • The city's water rights are for 5,000 acre-feet per year.

Variants and Related Words

• Acre-inch: A smaller unit of volume, equal to one-twelfth of an acre-foot, representing the volume to cover one acre to a depth of one inch.
• Cubic foot: A standard unit of volume; one acre-foot is equal to 43,560 cubic feet.

Synonyms

• Volume unit: (General term) A unit for measuring the amount of space a substance occupies.
• (Note: There is no direct single-word synonym for this specific unit of measurement.)

Related Phrases

• Water rights: Legal entitlements to use water from a source, often measured in acre-feet.
• Storage capacity: The maximum volume a reservoir can hold, typically expressed in acre-feet.

Học thuật

Noun

1. the volume of water that would cover 1 acre to a depth of 1 foot; 43,560 cubic feet or 1233.5 cubic meters