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About 2,200 people in Ohio County rely on private domestic water supplies: 1,800 use wells and 400 use other sources. In the southern and western two-thirds of Ohio County, most wells from depths of less than 300 feet are adequate for a domestic supply. Wells located in the Green River floodplain can produce as much as 100 gallons of hard water per minute. Most wells obtain their water from thick sandstone layers and will yield as much as 60 gallons per minute. In the northeastern third of the county, only a few wells yield enough water for a domestic supply, except in the valley of the Rough River. In a thin, highly faulted zone running east-west across the county between the towns of Beda and Dundee, yields to drilled wells are unpredictable because of faulting. In the southern part of the county, moderately mineralized water may be obtained locally from deep sandstone formations at depths of 1,200 feet. Generally, groundwater is hard to very hard, and iron and salt may be present in objectionable amounts. Often, groundwater becomes saltier with depth. |
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