1.) Looking downstream at where an AquaDam cofferdam system will be installed to divert the flow of the Shoshone River, so that some bank restoration could be done. The diversion path for the water needed to be opened so a hole will be dug with the excavator just upstream of where the first AquaDam will end.
2.) The first single closed end (SCE) AquaDam for this project will have a starting bank built down on the river bar, near the dead fallen trees. The first AquaDam is a 30-inch (2.5ft) tall 5ft wide 150ft long SCE unit. A starting bank is needed for SCE AquaDams to elevate the starting point (open end) and fill-tubes higher than the dam’s full height along its given path. An AquaDam will only reach its full height at the lowest elevation along its given path.
3.) Looking upstream, where the second AquaDam will be installed. The second dam is an 18-inch (1.5ft) tall 3ft wide 75ft long SCE AquaDam that will close off the smaller channel that forked off.
4.) The excavator is opening the diversion channel and clearing shrubs prior to the installation of the first AquaDam.
5.) The pumps and AquaDams have been brought down to the work area. AquaDams are shipped rolled-up like a carpet roll, wrapped in a protective covering, and have lifting ropes/straps.
6.) The first AquaDam will end down at the pile of dirt, just past the diversion channel. A worker has begun picking rocks out of the path of where the AquaDam will be laid. Rock picking is important to help with the seal the AquaDam makes with the riverbed.
7.) Workers are going to use that dead fallen tree along with the piled rocks to make the starting bank for the first AquaDam. The path where the AquaDam will be unrolled has already been picked for rock.
8.) Worker unroll the AquaDam just to the edge of the water and hold the roll end until the unit has been filled with enough water, because the current can push the roll and dam downstream. AquaDams are made of light weight flexible materials and will float when empty in deep enough water. The workers will wait until the unrolled portion of the AquaDam has enough head above the surrounding water as it crosses the river.
9.) The we can see the starting bank for the first AquaDam. The starting point (open end) and fill-tubes have been draped up over the log. The fill-tubes have been secured to the discharge hoses that are filling them with water.
10.) Workers use rope and their hands to hold the roll end while the unit builds head and slowly crosses the flowing water.
11.) As the first AquaDam was filling workers placed larger rocks along the work area edge of the dam’s path to help give it some support.
12.) The first AquaDam has reached its ending bank and is diverting the flow.
13.) Worker pick rocks at the second location they needed an AquaDam. This is the upstream location, where the smaller channel forked off.
14.) Workers built the starting bank for the second AquaDam. The starting bank just needs to be tall enough to elevate the starting point (open end) and fill-tubes higher than the dam’s full height along its given path. An AquaDam will only reach its full height at the lowest elevation along its given path. This AquaDam will reach 1.5ft tall when it is full.
15.) Workers only used one pump and pumped one side of the AquaDam at a time. The discharge hose was placed in one fill-tube, that tube was filled for a few minutes, the hose was switched to the other fill-tube, that tube was filled for a few minutes, the hose was switched back to the first fill-tube, and repeated the process until the AquaDam was full.
16.) The second SCE AquaDam has been successfully installed and is working great. Notice the fill-tubes have been tied up, they are over by the worker. Tying the fill-tubes up will help ensure that the water stay inside of the AquaDam.
17.) Workers have built the starting bank for the third SCE AquaDam and are rock picking to help with the seal the AquaDam makes with the riverbed.
18.) The third SCE AquaDam continues to fill as workers continue to pick rocks. The Shoshone River is very rocky. The third dam is an 18-inch (1.5ft) 3ft wide 150ft long SCE AquaDam.
19.) Workers decided that they only needed to use about 100ft of length of the last AquaDam so the rolled-up leftover length was tied back, and rocks were piled against the roll too.
20.) The AquaDam cofferdam system is up, installed, and the work area is de-watering.
21.) The upstream SCE AquaDam working great.
22.) Looking downstream, great job AquaDam!
30-inch (2.5ft) Tall 5ft Wide (full) 150ft Long Single Closed End (SCE) AquaDam, Two 18-inch (1.5ft) Tall 3ft Wide SCE AquaDams, River Diversion, Shoshone River, Bank Restoration, Line Configuration