This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1905 Excerpt: ...by many wells, mostly of moderate depth. In the region south of Mitchell the underground ridge of Sioux quartzite has considerable prominence, its slopes intercepting the Dakota sandstone, so that in several townships the waters from the latter are not available. This is the case south and southwest of Mitchell for ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1905 Excerpt: ...by many wells, mostly of moderate depth. In the region south of Mitchell the underground ridge of Sioux quartzite has considerable prominence, its slopes intercepting the Dakota sandstone, so that in several townships the waters from the latter are not available. This is the case south and southwest of Mitchell for several miles, although in a portion of the area sandstones in the Benton formation overlap the quartzite and yield flowing wells, in which, however, the pressure is sufficient to afford flows only in the lower lands. Several wells in this district have been bored to the "bed rock," and. although in some cases obtaining water, have not had sufficient head to afford a flow. In the north, west, and south portions of the county there are wells in nearly every section, most of which find water supplies at less than 500 feet below the surface. Some obtain flows from the sandstones underlying the chalk, others from sandstones low in the Benton group, but most of thenv. have penetrated to the top of the Dakota sandstone. In the southwest corner of the county the land rises considerably and the sandstone dips toward the southeast, so that the depth to the Dakota water rapidly increases. In the extreme southwest portion of the county the depth is between 750 and 800 feet below the surface, and in the valley of Enemy Creek between 350 and 450 feet. About. Mount Vernon many wells obtain water, apparently from Dakota sandstone, at depths from 300 to 420 feet in greater part, in most cases' also finding upper flows.in sandstones of the Benton formation. Halfway between Mount Vernon and Mitchell there is an area of considerable size in which the Dakota sandstone reaches its maximum uplift and affords flows in wells from 250 to 300 feet deep. On Fires...
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Add this copy of Preliminary Report on the Geology and Underground Water to cart. $69.86, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Newport Coast, CA, UNITED STATES, published 2015 by Palala Press.