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international ground water modeling center

10 COMMANDMENTS FOR HYDROGEOLOGISTS

Dawn H. Garcia, CPG-8313, enjoyed the "Ban Dihydrogen Monoxide" polemic which ended column 25 (Dec. '97). She contributed the following "The Ten Hydrogeologic Commandments" from the Directorate of Hydrogeology, Department of Water Affairs and Forestry, Republic of South Africa, Newsletter, Vol. 2, No. 1, January, 1998.
  1. Thou shall not assume isotropy, homogeneity, or uniform gradient without field evidence.
  2. Thou shall not assume wells or streams to penetrate fully or flow systems to be two dimensional.
  3. Thou shall not use regional data to make site-specific judgements.
  4. Thou shall not use color graphics to enhance lousy science.
  5. Thou shall not employ geostatistics to obfuscate poor interpretations or weak conclusions.
  6. Thou shall not rely on stochastic methods to disguise insufficient field data.
  7. Thou shall not place geochemical interpretations above hydraulic interpretations.
  8. Thou shall never regard geophysics as the truth.
  9. Thou shall never use a contouring program to make a water-table map.
  10. Thou shall never use more than three significant digits.

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Last update: June 2003