SOLUTION This small dam (below) on Whisky Creek prevented aquatic species from traveling upstream. The new rock arch rapids (above) remove that barrier, restoring natural habitat and spawning habitat. of these programs provide up to 100% of the funding to modify existing dams. Other times, state and federal funding options can often be matched together to provide nearly 100% of the required funding.
CHALLENGE
HEI can help clients explore funding sources and alternatives for those looking to rehabilitate, reconstruct, or replace the low-head dams in their care.
For more info, contact: Erik Jones, PE 701.499.2055 ejones@houstoneng.com
SOLUTION
At Heiberg Dam (left), large concrete "teeth" were constructed upstream of the rock rapids to break up ice and reduce the risk of downstream ice jams. These "teeth" are located at the head of the rock arch rapids. These concrete structures along with the downstream rock arch rapids allow easy aquatic passage while still providing some control over river ice conditions and water elevation. This project was partly in response to a previous dam failure that caused significant damage (below).
CHALLENGE
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