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NOTE: To get off this list, send email to majordomo@aqua.ccwr.ac.za with the body of the message containing the line: unsubscribe sowacs Trisha, About seventeen years ago my aunt had an encounter with the same stream. She was a principal of a high school in the area and the encounter involved problems with settlement of the basement slab in one of their buildings. I would recommend that you contact a local geotechnical engineering firm that is familiar with the problem since you may have to deal with a lot more than a flooded basement. You could start by calling the Civil Engineering Department at Brooklyn Polytech for some guidance. Sincerely, Kevin O'Connor At 06:14 PM 3/5/00 GMT, you wrote: >>Dear Bruce, >> I came upon your site while researching underground streams. I live in Park >>Slope, Brooklyn, NY and there are many in the neighborhood. It seems that >>recently one has surfaced under my house in the ground below the basement >>floor. I'd like to install a sump pump, but first, I'd like to be able to >>determine which direction the water is coming from. Is there an electrical >>device or sonar device available to trace the origin of the water? Your >>input would be greatly appreciated. Thank you. >>Regards, >>Trisha >>Reply via e-mail to trisha@brooklynproperties.com >> >> >> ++++++++++++++++++++++++++++++++++++++++++++++++++ Kevin O'Connor, Ph.D. (612) 431-3415 voice GeoTDR, Inc. (612) 892-0241 fax 297 Pinewood Drive kevin@geotdr.com Apple Valley, MN 55124 http://www.geotdr.com +++++++++++++++++++++++++++++++++++++++++++++++++