Book Review—GIS for Surface Water Using the National Hydrography Dataset

Huidae Cho

doi:10.14358/pers.85.1.11

Book Review—GIS for Surface Water Using the National Hydrography Dataset

Photogrammetric Engineering & Remote Sensing ◽

10.14358/pers.85.1.11 ◽

2019 ◽

Vol 85 (1) ◽

pp. 11-12

Author(s):

Huidae Cho

Keyword(s):

Surface Water ◽

National Hydrography Dataset

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Application of a Simple Cold Stub to the Direct Observation of Frozen Hydrated Sand

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100071508 ◽

1973 ◽

Vol 31 ◽

pp. 212-213

Author(s):

John M. Wehrung ◽

Richard J. Harniman

Keyword(s):

United States ◽

Surface Water ◽

Direct Observation ◽

Controlled Study ◽

Clay Particles ◽

Organic Debris ◽

Rock Formations ◽

Water Tables ◽

Permeable Rock ◽

Natural Means

Water tables in aquifer regions of the southwest United States are dropping off at a rate which is greater than can be replaced by natural means. It is estimated that by 1985 wells will run dry in this region unless adequate artificial recharging can be accomplished. Recharging with surface water is limited by the plugging of permeable rock formations underground by clay particles and organic debris.A controlled study was initiated in which sand grains were used as the rock formation and water with known clay concentrations as the recharge media. The plugging mechanism was investigated by direct observation in the SEM of frozen hydrated sand samples from selected depths.

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