How far will you travel to install?
Traveling is not an issue, we have installed cofferdams from Maine to Florida and as far west as Colorado. International orders should also not be discouraged. We can make any application work.
How long do they take to install?
The US Army Corps of Engineers performed an installation time study comparing sandbag dams with AquaDams®. A group of trained people could install a 4' x 100' sandbag dam in a little over four hours: Two Corps personnel could install a 4' x 100' AquaDam® in 30 minutes.
What is the maximum length of an AquaDam®?
The longest continuous AquaDam® is 1,000 ft.
What is a closed-ended AquaDam®?
A closed-end AquaDam® with collar means one end is open which would have to be elevated, and the other end is closed with an attachment collar. Using the collar, a second AquaDam® can be attached making a watertight connection.
What is a double closed-ended AquaDam®?
Double closed-ended means that both ends are closed and fill hoses have been inserted into the fill tubes prior to closing off the ends. The fill tubes on one end extend up towards the top of the AquaDam®. Attachment collars can be put on one or both ends. This is a free standing unit that can be filled up on flat ground and does not require the elevation of either end.
Open-ended with baffles means a baffle or skirt is sewed from top to bottom on the inside of the outside tube that forms the AquaDam®. A water tight tube is then inserted in each side of the baffle. A 3 ft. high AquaDam would have a baffle 3 ft. high separating the inside tubes. This will give the AquaDam® additional support.
An open ended AquaDam® can be used crossing a canal or stream when the banks of the canal or stream are in an elevated position. The stream bank is what keeps the water from running out the ends of the AquaDam®. Open ended AquaDams® go bank to bank. AquaDams® with one end open and the other end closed with attachment collar go from open end elevated upon the bank to the closed end, determining where the AquaDam® will stop, such as half way across a river. Then a connection can be made.
A double closed-ended AquaDam® with hoses means a combination of those above. Both ends closed, baffle down the middle, fill hoses already inserted to fill the AquaDam. It may or may not have attachment collars on one or both ends.
AquaDams® are designed to meet EPA guidelines under Section 404 (40 CFR §230.1) as well as the Clean Water Act. The Clean Water Act and Section 404 guidelines prohibit discharges of dredge and fill material when a practicable alternative exists. AquaDams® provide a practicable alternative because they do not use any fill material and have no adverse effects on the aquatic ecosystem. The US Food and Drug Administration, after thoroughly testing the plastics that our product consists of, stated that it "is a material suitable to place in contact with food".
AquaDams® are available for rental at very reasonable rates. Our team of experts will install your AquaDams® and will remove them when the job is done.
The outer woven geo-textile plastic tube standard to all AquaDams® contains UV inhibitors to prevent damage due to sunlight exposure. A properly maintained AquaDam® can remain in place for well over a year in direct sunlight. Stored properly, the shelf life of an AquaDam® is indefinite. Limitations related to the flow periods As long as the maximum water depth during the life of the project is accounted for, the AquaDam® will remain stable for the duration of the project. In the event of unexpected increases in water levels, most AquaDams® can be removed in one day without any damage to the environment and then reinstalled after the water levels return to normal. A second option would be to increase the height of the installed AquaDam® by pumping more water into the dam and temporarily over inflating it. For example, a 4 foot high AquaDam® could be over inflated to almost 8 feet in height under the right conditions.
If the slope is parallel to the length of the AquaDam®, it does not have an affect on the stability of the structure as long as the depth of the containment does not exceed the recommended values along that length.
Under most conditions AquaDams® can be reused. Even a punctured AquaDam® can easily be patched. As long as the AquaDam® is not irreparably damaged during the deflation, it can be pulled from the water and stored for another project.