Stream Diversion: Phase 1, Page 3: |
| Workers are holding back the AquaDam® as it inflates. Head pressure inside the AquaDam® must be maintained higher than the surrounding water. Stream water starts flowing down the diversion channel. |
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| Now that the original channel is nearly blocked off, most of the water is now flowing down the diversion channel. What water flow does get through the remaining gap now has a great amount of velocity. The bank is only 3' away, but the crew must stop, hold the AquaDam® in place and wait for head pressure to build back up. |
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| The bank is only a foot away, but the workers hold the AquaDam® back as long as possible before closing off the channel. The AquaDam® pushes the legs of the workers, and you must be careful as the last workers legs are removed and the AquaDam® extends to the bank, cutting off the entire flow of the stream. Notice that a boil has already developed underneath the AquaDam® due to a silted-in tire in it's path that could not be removed by hand. This was later controlled by extending a piece of polyethylene sheeting across the front of the AquaDam®. |
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