Diffuser at the Norfork National Fish Hatchery

Hello, Everyone!

I hope everyone had a great Thanksgiving!  We are still eating leftovers… 🙂

We always try to keep you updated on things that we think will be interesting to you, so this week I want to talk to you a little bit about what’s going on at the Norfork National Fish Hatchery.

If you remember, last year we dodged a bullet when the threat of Federal budget cuts threatened the operation of the hatchery itself… We appreciate those of you who took the time to write, call, and basically help us raise holy H**l, in addition to offering to come out and help work the hatchery yourselves…

Anyway, this posting is good news!  I’m taking a snip from the November issue of the hatchery newsletter to share with you about the diffuser installation currently underway.  Enjoy!

Friends of the Norfork National Fish Hatchery – The Raceway – November, 2011

Diffuser Installation in Progress

Norfork National Fish Hatchery Diffuser Unit
Norfork National Fish Hatchery Diffuser Unit

Great News!  Given the generosity of our benefactors, construction of 16 diffusers to be placed on Raceway Banks A & B is in full swing.  Our goal is to provide a total of 24 diffusers for banks A, B, C & D.

There has been $7183.70 spent out of the diffuser funds during the past month.  Starting out prior to the purchase of materials, there was $9685 in the account.  Funding analysis of recent and anticipated donations indicates that, with just a little more support, our initial goal for 24 diffusers will be achieved.  The total expense for the 24 diffusers will be pretty close to $21,000.

The hatchery has provided funding for 24 professional six-inch quick release unions at $71 per unit.  A complete list of benefactors will be announced as soon as we achieve our goal for 24 diffusers.  The Norfork National Fish hatchery is very thankful to all those individuals, groups and clubs that have made this important project possible.  Additional material will be ordered during the week of November 14.  During the next stage of construction, an additional jig will be built in order to increase production.  Due to the standard daily demand for specific hatchery duties, the staff is not always available for consistent production.  One or two more volunteers would be most appreciated

Construction of each diffuser is very labor-intensive and time-consuming.  Hatchery staff members, Doug Anderson, Doug Beard and Dale Plumlee, along with FNNFH VP, Joe Salisbury, began work on November 3.  An internal baffle assembly jig was refined and 100 24-inch perforated baffles were cut out from ten 4 x 10′ sheets.  A complete internal baffle component requires about two hours for one person to assemble.  Each completed internal baffle consists of eight baffle discs, four 6-foot rods, 72 nuts, 72 washers, 64 Teflon washers and 72 lock washers.  Four support legs and two cross beams are cut from 16 foot long angle iron.  Outside shells, 5 foot long, are cut from 20 foot, 24 inch tubing.  Six-inch piping is utilized to attach the completed diffuser to the water source.  Each diffuser is designed to manage and treat over 400 gallons of water per minute.

The diffuser’s primary purpose is to dissipate supersaturated nitrogen levels, increase dissolved oxygen, separate and remove sulfide and manganese through the entire year, creating the healthiest environment possible in order for the trout to mature to their healthiest level.

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Hope you enjoyed the article…  see you on the White River soon!

Your White River Trout Diva
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