- Wetlands Restoration
Ottawa National Wildlife Refuge
Oak Harbor, OH (2004)
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This wildlife refuge needed to block off 52 acres of wetlands,
to control the water depth. They needed to protect
wetland plants on the mud flats until they had been established
18 months. Water levels would not affect their growth after that point.
This crew is made up of the US Geological Survey and Ottawa National Refuge
personnel. The installation consisted of 6' x 1,500' of AquaDams® in seven separate
sections. At this point we had cleared the brush and started the AquaDam® on the bank
of the marsh.
The AquaDam® rolls down the hill to the foot of the slope. The start (fill end)
of the AquaDam is placed at least 6' up the bank. Fill tubes extended even further
up the bank. Fill hoses were inserted into the first 10' of the fill tubes.
Depending on which way the wind blows, this mud flat,
which is not very deep, can be completely blown dry by the wind. If the winds
turns and comes from the opposite direction, it can blow water into the portion
of the refuge, increasing the water depth to a maximum of 3.9 inches.