AN INEXPENSIVE SHALLOW WATER TABLE PROBE

A METHOD FOR RAPIDLY DETERMINING SHALLOW GROUNDWATER LEVELS IN SAND AND GRAVEL PROFILES WAS DEVELOPED BY THE U.S. DEPARTMENT OF AGRICULTURE, BY MEANS OF WHICH AN INVESTIGATOR CAN ACCURATELY DETERMINE DEPTHS TO GROUNDWATER IN A FEW MINUTES BY DIRECT MEASUREMENT. THE EQUIPMENT USED CONSISTS OF A STEEL ROD AND DRIVING RAM. THE ROD IS 13 FEET LONG WITH 1/16-INCH HOLES DRILLED THROUGH IT AT 6-INCH INTERVALS. THE ROD IS DRIVEN INTO THE GROUND TO ITS ENTIRE LENGTH WITH THE DRIVING RAM AND THEN EXTRACTED BY HAND USING AN ATTACHED C CLAMP. UPON EXTRACTION, THE 6-INCH-INTERVAL HOLES ARE EXAMINED TO SEE WHICH IS THE UPPERMOST HOLE THAT CONTAINS WATER. BECAUSE AN INDEX NEAR THE TOP OF THE ROD IS DRIVEN TO GROUND LEVEL, THE DISTANCE FROM THE INDEX TO THE NEAREST HOLE FILLED WITH WATER IS THE DEPTH TO GROUNDWATER. THIS SYSTEM WAS SUCCESSFULLY USED FOR MEASURING SHALLOW DEPTHS TO THE WATER TABLE ON TWO CONSUMPTIVE-USE SURVEYS ALONG THE MAJOR LENGTH OF THE SANTA YNEZ RIVER IN CALIFORNIA.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00093920
• Supplemental Notes:
  • Vol 77, No 5, PP 626-628, 1 FIG
• Corporate Authors:

  University of Chicago Press

  1427 E. 60th Street
  Chicago, IL  United States  60637-2954
• Authors:
  • Libby, F
• Publication Date: 0

Media Info

• Serial:
  • Journal of Geology
  • Publisher: University of Chicago Press
  • ISSN: 0009-3920

Subject/Index Terms

• TRT Terms: Depth; Groundwater; Measuring instruments; Water table
• Old TRIS Terms: Depth indicators; Groundwater level
• Subject Areas: Geotechnology; Highways; Hydraulics and Hydrology;

Filing Info

• Accession Number: 00229748
• Record Type: Publication
• Files: TRIS
• Created Date: Jan 19 1970 12:00AM