Tidal Canal Dewatering for CalTrans
Interstate 880, Milpitas, CA (2003)
Page 4 of 7
The 8' high AquaDam® has still not unrolled completely. Putting down a geotextile mat allowed workers to walk on the mud without sinking up to their knees.
Milpitas, CA
This is the end of the 8' backup AquaDam®. The extra material on the end is a coupling collar, which will not be used and will remain rolled up. Ending the backup unit here, only 4' up the bank, allows all seepage water to flow around the end, rather than backing up between the two dams.
Milpitas, CA
The two AquaDams® are now completely full. The smaller unit is used to back up the larger unit. The channel will stay dewatered. The tidal flows will be on the far side of the white dam.  
Milpitas, CA
Normal high tide. The water depth is approximately 7'. This unit is good for 1.5' more water depth, which will occur at some point during the life of this project (probably during a full moon). This unit was installed on May 1st. It lasted for approximately 7 days before a tremendous storm washed it out.
Milpitas, CA