Multichannel seismic-reflection profiles collected in 1977 off the Northern California and Oregon coast

McCulloch, D. S.; Mann, D. M.; Ryan, H. F.; Sliter, R. W.

Abstract:

Groundwater level measurements were made in 690 observation wells in Arkansas in the spring of 1986. In addition, well hydrographs are given for aquifers in the Quaternary deposits and the Sparta Sand, the most important aquifers with respect to groundwater availability and use in Arkansas. Water levels in the Quaternary deposits in the 25 heavily irrigated counties of eastern Arkansas overall rose 1.3 feet between 1981 and 1986. The average rise in water levels from 1981 to 1986 reflects, at least in part, the recovery of water levels in the Quaternary deposits, following the drought of 1980 and is in contrast to the long-term declines that persist in many parts of eastern Arkansas. In Arkansas, Columbia, Jefferson, Ouachita, and Union Counties where withdrawals from the Sparta aquifer are greatest water-level changes ranged from a decline of 1.5 feet to a rise of 7.9 feet between 1981 and 1986. (USGS)

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USGS Numbered Series

ProdID:

17404

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McCulloch, D. S.; Mann, D. M.; Ryan, H. F.; Sliter, R. W.

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ENGLISH

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4 p. :maps ;28 cm.

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U.S. Geological Survey,

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Open-File Report

Citation Series Code:

OFR

Citation Series Number:

86-406

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Multichannel seismic-reflection profiles collected in 1977 off the Northern California and Oregon coast; 1986; OFR; 86-406; McCulloch, D. S.; Mann, D. M.; Ryan, H. F.; Sliter, R. W.

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1986

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citation/reference

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Multichannel seismic-reflection profiles collected in 1977 off the Northern California and Oregon coast; 1986; OFR; 86-406; McCulloch, D. S.; Mann, D. M.; Ryan, H. F.; Sliter, R. W.