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Connolly Dam
Country Australia
Location Darling Downs, Queensland
Coordinates 28°21′17″S 151°59′52″E / 28.35472°S 151.99778°E / -28.35472; 151.99778Coordinates: 28°21′17″S 151°59′52″E / 28.35472°S 151.99778°E / -28.35472; 151.99778
Purpose
Status Operational
Opening date
  • 1927 (1927)
Operator(s) Southern Downs Region Council
Dam and spillways
Type of dam Embankment dam
Impounds
  • Rosenthall Creek
  • Fitz Creek
Height 22 m (72 ft)
Height (thalweg) 174 m (571 ft)
Length 145 m (476 ft)
Dam volume 115×10^3 m3 (4.1×10^6 cu ft)
Spillway type Uncontrolled
Spillway capacity 540 m3/s (19,000 cu ft/s)
Reservoir
Total capacity 2,592 ML (0.570×10^9 imp gal; 0.685×10^9 US gal)
Catchment area 134 km2 (52 sq mi)
Surface area 52–55 ha (130–140 acres)
Maximum water depth 16 m (52 ft)

The Connolly Dam, also called the Silverwood Dam, is a rock–fill embankment dam with an un–gated spillway across the Rosenthall Creek and the Fitz Creek that is located in the Darling Downs region of Queensland, Australia. The main purpose of the dam is for potable water supply of the Southern Downs Region.

Location and features

The dam is located in a pristine mountain valley 15 kilometres (9.3 mi) southeast of Warwick and approximately 20 kilometres (12 mi) north of the Border Rivers region that generally defines the border between Queensland and New South Wales.

Completed in 1927, the rock–fill dam structure is 22 metres (72 ft) high and 145 metres (476 ft) long. The 115-thousand-cubic-metre (4.1×10^6 cu ft) dam wall holds back the 2,592-megalitre (0.570×10^9 imp gal; 0.685×10^9 US gal) reservoir when at full capacity. The uncontrolled un-gated spillway has a discharge capacity of 710 cubic metres per second (25,000 cu ft/s). The dam is managed by the Southern Downs Region Council.

Recreational activities

Golden Perch, Silver Perch, Murray Cod, Spangled perch and Eel-Tailed Catfish may be found in the reservoir. Golden Perch dominate most catches for lure/fly anglers, while Silver Perch and Eel-Tailed Catfish (dewfish) are more of a bait fishing prospect. A stocked impoundment permit is required to fish in the dam.

Connolly Dam is an "electric only" impoundment (outboards must be taken off) meaning only electric or manually powered craft may be used. Only members of the Warwick District Recreational Fish Stocking Association (WDRFSA) may take craft on the waterway, and only on weekends between sunrise and sunset. WDRFSA memberships are available from the caretaker at the dam currently costing $10. There is no boat ramp but there are many ideal locations around the dam to launch a boat. Membership cards must be shown to the caretaker prior to launching watercraft.

Camping is not permitted at Connolly Dam. Toilets are provided at the lookout adjacent to dam wall.

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