Source-area characteristics of large public surface-water supplies in the conterminous United States : an information resource for source-water assessment

1999 ◽  
Author(s):  
Richard B. Alexander ◽  
Richard A. Smith ◽  
Michael J. Focazio ◽  
Marilee A. Horn
Keyword(s):  
United States ◽  
Surface Water ◽  
Source Area ◽  
Information Resource ◽  
Source Water ◽  
Water Supplies ◽  
Water Assessment

MICHIGAN'S SOURCE-WATER ASSESSMENT PROGRAM – SURFACE-WATER ASSESSMENTS LEADING TO PROTECTION INITIATIVES

2002 ◽  
Vol 2002 (2) ◽  
pp. 2092-2113
Author(s):  
M.J. Sweat ◽  
B.B. Brogren ◽  
R.S. Jodoin ◽  
T.A. Rossi ◽  
M.W. Loerop
Keyword(s):  
Surface Water ◽  
Source Water ◽  
Assessment Program ◽  
Water Assessment

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

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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