A fish hatchery is always a busy place and obstacles are
common. Clean water, obviously the main ingredient for successful fish culture,
is constantly monitored for oxygen, nitrogen, and proper flow. But what happens
when the water source that the hatchery depends on is compromised?
The answer: collaborate and adapt- quickly!
Clearwater State Fish Hatchery/IDFG |
On August 15th the main water line from Dworshak
Dam to Clearwater Hatchery was damaged. The water line needed to be shut down
in order to investigate and repair the damage. Because of the location of the
intake pipe and uncertainty to the extent of the damage a ROV (remotely
operated vehicle) was sent down the face of the dam to assess the damage and
determine if both the main and secondary water lines would need to be shut
down.
Clearwater's pipeline runs down the right side of the dam. |
This left Clearwater Hatchery, our neighbors across the river,
in short water supply. Fortunately, only the main waterline was damaged and the
secondary pipeline was intact. But without the main they would not have enough
water to supply all their outdoor rearing ponds. It became clear that in order
to save the fish Clearwater would need to find some water.
Since Dworshak National Fish Hatchery is right across the
river from Clearwater it was the logical place for a solution.
Both hatcheries can share reservoir water, but most of
Dworshak’s water comes from the North Fork Clearwater River, about a mile below
the Dam. The river water comes with its share of problems- the biggest is IHNV,
a virus that can be deadly to steelhead. This is why Clearwater uses disease
free reservoir water as its sole water source. Pumping river water to
Clearwater Hatchery was not an option, but moving their fish to Dworshak was.
So it was decided that Clearwater Fish Hatchery would move all of their 2011
Spring Chinook salmon over to the Burrow’s ponds at Dworshak.
IDFG employees doing maintenance on the primary water intake |
Planning and preparing for the fish move was tough and took
a lot of teamwork. With help from the Nez Perce Tribal Hatchery, the Idaho
Department of Fish and Game, the Lower Snake River Compensation Program, the Environmental
Protection Agency, and the Army Corps of Engineers, we were able to prepare 25
Burrow’s ponds, improve our waste water system to accommodate the additional
fish, and move 2.5 million juvenile Spring Chinook over in less than two weeks.
Clearwater spring Chinook salmon |
A little over a month has gone by since the fish move and
fish and staff are adjusting to the new routine. Clearwater’s Chinook will
remain here until their release next spring. Now Clearwater can safely shutdown
and repair their main waterline without losing any fish.
What damaged the main water line from Dworshak Dam to Clearwater Hatchery?
ReplyDeleteA cable that holds the intake to the water line broke causing the intake to break free and damage the water line.
ReplyDeleteI loved reading this piece! Well written! :)
ReplyDeletewilson roy
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Thanks Wilson. Always love positive feedback :)
ReplyDelete