Cleaning Waste Ponds
This series of ponds are part
of the hatchery's effort to release clean water back into the river after it has
been used. Water from the raceways flows into the cleaning ponds consecutively,
and any particulates which may be in the water settle to the bottom.It takes about
three hours for one complete volume of raceway water to pass through each pond.
Water then flows into the sedimentation basins.
This pond's sole purpose is
for use by the fish and wildlife in the area. It is a popular nesting area for
duck's and geese. Catchable rainbow trout are also stocked into the pond.
This pond is divided into
three sedimentation basins. It is the last settling pond in the series used to
clean the hatchery's water effluent, receiving water from the waste cleaning ponds.
Each basin also has a three hour filtration period, for a total of a nine hour
cycle. These ponds are also a popular spot for waterfowl.
Adult Holding Ponds & Spawning Area
adult spawning facility is located 300 yards downstream of the main hatchery building.
This is the area where all adult fish that return to the hatchery are held. The
fish are trapped at the hatchery;s fish weir, and are then sorted by gender and
spawned. Steelhead are harvested from late March to early May, chinook are harvested
The adult facility consists
of three adult ponds and an enclosed spawning shed (32 ft x 52 ft).
The adult facility has
three concrete adult fish holding ponds with 4,500 cubic ft of holding area.
Each pond can hold approximately 1,300 adult salmon or steelhead.
The temporary employee dormitory is
located 300 yards downstream of the main hatchery building. The
dormitory (38 ft x 72 ft) has three bedrooms with a bath in each, storage and
laundry room, living and dining room with an open kitchen. There are also five
resident houses at Sawtooth, all 1,360 square ft with attached single car garages.
Fish Weir & Bridge
Sawtooth Fish Hatchery weir, located
on the river at the facility, is approximately 400 river miles from Lower Granite
Dam and 900 river miles from the mouth of the Columbia River.
The fish weir is a barrier that
is placed across the river to prevent adult fish passage upstream.
The fish are diverted at the weir
into a fish ladder, and are trapped at the top in the adult holding ponds, until
they can be sorted and spawned.
Two parking areas are available to
Written and compiled by Jacqueline