Home / News / Iowa DNR Selects HR Green to provide Professional Services for Spirit Lake Fish Hatchery Improvements

Iowa DNR Selects HR Green to provide Professional Services for Spirit Lake Fish Hatchery Improvements

Hr Green, Inc.

HR Green is providing consulting services for the improvements to the Spirit Lake Fish Hatchery (SLFH) operated by the Iowa Department of Natural Resources (DNR). The Hatchery is a 33 acre coolwater rearing station originally built in 1880 and includes a rearing building and seven earthen production ponds.

The goals for this project are to prevent zebra mussels from contaminating the Hatchery as well as improve fish health. A water filtration system and modification to the intake structure was the preferred method to prevent contamination if zebra mussels are found in Big Spirit Lake. A degassing column with injected liquid oxygen is also needed to remove the nitrogen from the water before it enters culture units at SLFH to eliminate loss of fish due to supersaturation.

The HR Green team is providing all design, construction plans, construction oversight and training for a water filtration system, a degassing system, and a liquid oxygen injection system for the Spirit Lake Hatchery.

“We are excited that IDNR has selected us to partner with them to solve one of their highest priority hatchery challenges,” said Project Manager Mark Hardie.  “We thoroughly enjoy partnering with the Departments’ engineers and biologists to drill into the issues and help them develop functional and cost-effective solutions.”

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