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Located 10 miles (16 km) upstream of the smaller Griggs Dam, it provides a large area for various forms of recreation in addition to its water supply duties. The reservoir holds 6.3 billion US gallons (24,000,000 m 3 ) over a surface area of 845 acres (3.42 km 2 ). [ 4 ]
For 20 years, it served as the only reservoir serving the city of Columbus' drinking water needs. [3] Griggs Dam is a gravity dam with a 500-foot-long (150 m) curved concrete spillway. Its height is only 35 feet (11 m), but it forms a reservoir almost 6 miles (9.7 km) long with a 1,200,000,000-US-gallon (4.5 × 10 9 L) capacity.
This reservoir is a major water source for the city of Columbus, Ohio. It holds 20.8 billion US gallons (79,000,000 m 3) of water and has a surface area of 3,272 acres (13.24 km 2), or about five square miles. Construction began during 1953 due to the increased water demand of post-war Columbus.
At altitudes above 2,000 metres (6,600 ft), boiling should be extended to 3 minutes, [2] as the lower boiling point at high altitudes requires more time to kill such organisms. A boil water advisory usually lasts up to 24-48 hours, but sometimes more.
The boil water advisory also remains in effect until Richmond can test the water and ensure it is safe to drink. "I am incredibly proud of our City staff," said Richmond Mayor Danny Avula.
The Metropolis Water Act introduced the regulation of the water supply companies in London, including minimum standards of water quality for the first time. The Act "made provision for securing the supply to the Metropolis of pure and wholesome water", and required that all water be "effectually filtered" from 31 December 1855. [ 41 ]
195.6 cu ft/s (5.54 m 3 /s), USGS water years 1974-1998 [3] Map of Alum Creek highlighted within the Scioto River watershed Alum Creek is a 58-mile (93 km) long creek that runs north to south in central Ohio .
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