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Built
across the Boyne River south west of Gladstone, the Awoonga
Dam is a rockfill structure with a concrete upstream face
slab. The embankment was formed from rock excavated from
a quarry on the Eastern side of the dam wall. The embankment
is over 650 metres in length and 54.4 metres in height,
with a volume of approximately 2 million cubic metres of
rock. The spillway’s height is 40 metres AHD. This
design of the current dam allows for further raising, if
necessary, through the addition of gates to the top of the
spillway. The current capacity of the dam is 777,000 megalitres.
The
Gladstone Area Water Board with the Gladstone Port Authority
has begun a breeding program Mangrove Jack and mullet for
stocking in Lake Awoonga. Approximately 300,000 fish are
released into Lake Awoonga each year (200,000 barramundi
and 100,000 mullet, and small numbers of mangrove jack).
The fish are bred at our purpose-built fish hatchery, operated
jointly by the Gladstone Area Water Board and the Gladstone
Port Authority. The hatchery is one of the largest breeders
of barramundi fingerlings in Queensland and our mangrove
jack breeding program has resulted in Lake Awoonga holding
the largest stocks in Australia with over 13,000 released.
Since 1996 over two million barramundi fingerlings and 340,000
mullet fingerlings have been released into Lake Awoonga.
Barramundi in the 10-25kg range are regularly caught from
the lake. the largest barramundi caught to date was 29.8kg.
The fish you may encounter in Lake Awoonga are: Agassiz’s
Glass Perch, Banded Grunter, Barramundi, Bony Bream, Eastern
Rainbowfish, Eeltail catfish, Fly-specked Hardyhead, Forktail
Catfish, Gudgeon, Long-finned Eel, Longtom (Alligator Gar),
Mouth Almighty, Sea Mullet, Snub-nose Garfish, Spangled
Perch. (Present in low numbers: Hyrtl’s Tandan, Mangrove
Jack, Saratoga, Silver Perch, Sleepy Cod, Sooty Grunter
& Yellowbelly)
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Fish
Awoonga DVD. Get your
copy HERE
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