Ground-water Levels in the United States PDF Download
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Author: Geological Survey (U.S.)
Publisher:
ISBN:
Category : Groundwater
Languages : en
Pages : 212
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Author: Geological Survey (U.S.)
Publisher:
ISBN:
Category : Groundwater
Languages : en
Pages : 212
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Author: Rand Mcnally
Publisher: Rand McNally
ISBN: 9780528016653
Category : Education
Languages : en
Pages : 128
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Book Description
Atlas of the United States ] Grades 3-6 Atlas Features: [€[Extensive coverage of the United States and its regions through maps, photos, graphs, and text [€[Section on map & globe skills covers topics such as directions, scale, and how to read thematic maps [€[World map section features physical, political, and thematic maps [€[10 U.S. history maps [€[Eye-catching photos, engaging text, and fascinating "Time to Explore" features help to engage students [€[128 pages, paperback, 8.5" x 10 7/8"
Author:
Publisher:
ISBN:
Category : Groundwater
Languages : en
Pages : 262
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Author: Ralph C. Heath
Publisher:
ISBN:
Category : Groundwater
Languages : en
Pages : 92
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Author:
Publisher:
ISBN:
Category : Groundwater
Languages : en
Pages : 362
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Author: G. L. Bertoldi
Publisher:
ISBN:
Category : Groundwater
Languages : en
Pages : 56
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See journals under US Geological survey. Prof. paper 1401-A.
Author: Southern Rural Water
Publisher:
ISBN: 9780975842058
Category : Groundwater
Languages : en
Pages : 54
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Author:
Publisher:
ISBN:
Category : Groundwater
Languages : en
Pages : 456
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Author: Gordon Sloggett
Publisher:
ISBN:
Category : Groundwater
Languages : en
Pages : 24
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Abstract: Ground-water levels are declining from 6 inches to over 5 feet annually beneath 14 million acres of irrigated land in 11 States irrigated mainly by ground water. Pumping costs are rising, and well yields are declining, causing farmers to adjust their irrigation practices. Farmers are adopting new irrigation technologies to improve irrigation efficiency and are changing to crops with lower water requirements in some areas. However, techniques for conserving ground water may not extend the life of aquifers. State and local governments have passed laws severely restricting further irrigation development in about 45 percent of the irrigated area affected by ground-water mining.
Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 248
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