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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).
One acre equals 1 ⁄ 640 (0.0015625) square mile, 4,840 square yards, 43,560 square feet, [2] or about 4,047 square metres (0.4047 hectares) (see below).While all modern variants of the acre contain 4,840 square yards, there are alternative definitions of a yard, so the exact size of an acre depends upon the particular yard on which it is based.
The only thing that changed was the number of feet and yards in a rod or a furlong, and the number of square feet and square yards in an acre. The definition of the rod went from 15 old feet to 16 + 1 ⁄ 2 new feet, or from 5 old yards to 5 + 1 ⁄ 2 new yards. The furlong went from 600 old feet to 660 new feet, or from 200 old yards to 220 ...
10 acres (4.0 ha) Shiawassee County: 625006 Eagle Lake 225 acres (91 ha) 59 feet (18 m) Allegan and Van Buren counties 625085 Eagle Lake 400 acres (160 ha) Cass County: 625079 Eagle Lake 194 acres (79 ha) 10 feet (3.0 m) Kalamazoo County: East Lake 100 acres (40 ha) Dickinson County: 625211 East Twin Lake 830 acres (340 ha) 25 feet (7.6 m)
The North Canton City School District board approved an agreement to get 10 acres and $2.5 million ... the developers plans to build about 226 apartments and about 30,000 square feet of restaurant ...
The 'perfect acre' [2] is a rectangular area of 43,560 square feet, bounded by sides 660 feet (a furlong) long and 66 feet (a chain) wide (220 yards by 22 yards) or, equivalently, 40 rods by 4 rods. An acre is therefore 160 square rods or 10 square chains. The name perch derives from the Ancient Roman unit, the pertica.
The only exceptions to this rule are special requirements for measurement in feet in mineral surveys and townsite surveys. [13] Linear Measurement 1 Chain = 100 links or 66 feet 1 Mile = 80 chains or 5,280 feet. Area Measurement 1 Acre = 10 square chains or 43,560 square feet 1 square mile = 640 acres
The intricate pathways were created section by section, over a span of 10 acres (4.0 ha), without the aid of blueprints. [9] There are three levels within the underground structure, one 10 feet (3.0 m) deep, one 20 feet (6.1 m) deep, and one 23 feet (7.0 m) deep. The gardens have skylights and catch basins for water.