View source for Anticipate dewatering problems in advance

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''Message: Wells are only effective if they are strategically placed and coordinated with each other''
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Lake Frances Dam was built in 1909, is 64 feet high, and stores 105,000 acre feet. Lake frances was ungoing a major rehab of the outlet works – involved replacement of the upstream section and sliplining the downstream section with steel pipe. A canal company was responsible for earthwork and dewatering and a contractor was hired for the sliplining operations.

Lessons learned:
*Dewatering can make or break a project, especially with fall construction – anticipate problems in advance
*You can tell right away if your dewatering system isn't working – don’t delay in trying something else.
*Calling in the experts can save you money in the long run.
*Wells are only effective if they are strategically placed and coordinated with each other

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File:ADP1.jpg|Lake Frances Dam New Intake Tower
File:ADP2.jpg|The reservoir was drained down to dead pool, but ponding water was still a big problem. A couple of wells were drilled to dewater the site. These proved to be ineffective.
File:ADP3.jpg|After over a month delay, with winter rapidly approaching, serious action was necessary. Godwin Wellpoint pumps were called in. They arrived with high powered pumps and set up a wellpoint system.
File:ADP4.jpg|Well point system.
File:ADP5.jpg|Godwin Wellpoint Pump
File:ADP6.jpg|With the site properly dewatered construction was able to proceed on schedule
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