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Abundant quantities of ground water are available for domestic, irrigation, and industrial uses from depths of a few feet down to 750 feet. In general, the chemical quality of the water is good, but water from some aquifers contains objectionable amounts of iron. Water from alluvium is generally hard to very hard. Water from the sand and/or gravel, non-alluvium aquifers are considered soft and slightly acidic with low dissolved solids. Generally, depth to ground water is under 100 feet, except in the uplands and in the western part of the county where water is found from 100 to 250 feet. Yields in some of the deeper wells (250-750 feet) are greater than 1,000 gallons per minute, sufficient for a community or industry. Ground water sometimes contains naturally-occurring iron in objectionable amounts from the deeper zones. In some formations with slightly acidic ground-water, a chemical reaction between the acidic ground-water and steel well casing and pump equipment will produce a high iron content in the water. |
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