Lake Moogerah

Moogerah Dam
The Moogerah Dam wall, in 2011
Location of the Moogerah Dam in Queensland
Country	Australia
Location	South East Queensland
Coordinates	28°1′48″S 152°32′56″E / 28.03000°S 152.54889°E / -28.03000; 152.54889Coordinates: 28°1′48″S 152°32′56″E / 28.03000°S 152.54889°E / -28.03000; 152.54889
Purpose	Irrigation Potable water supply
Status	Operational
Construction began	1959 (1959)
Opening date	1961 (1961)
Operator(s)	SEQ Water
Dam and spillways
Type of dam	Arch dam
Impounds	Reynolds Creek
Height	38 m (125 ft)
Length	219 m (719 ft)
Dam volume	23×10^3 m3 (810×10^3 cu ft)
Spillway type	Uncontrolled
Spillway capacity	740 m3/s (26,000 cu ft/s)
Reservoir
Creates	Lake Moogerah
Total capacity	83,700 ML (1.84×1010 imp gal; 2.21×1010 US gal)
Catchment area	228 km2 (88 sq mi)
Surface area	827 ha (2,040 acres)
Normal elevation	154.91 m (508.2 ft) AHD
Website www.seqwater.com.au

The Moogerah Dam is a mass concrete double curvature arch dam with a un-gated spillway across the Reynolds Creek that is located in the South East region of Queensland, Australia. The main purposes of the dam are for irrigation of the Reynolds Creek and for supply of potable water to Warrill Creek and farmers in the Warrill Valley. The impounded reservoir is called Lake Moogerah.

Moogerah is derived from the Aboriginal word Moojirah, meaning "home of the thunderstorm."

The dam is located above the Fassifern Valley, approximately 60 kilometres (37 mi) southwest of Ipswich. Aratula is the nearest town, approximately 11 kilometres (6.8 mi) from the dam and the nearest major centre is Boonah. The primary inflow of the reservoir is the Reynolds Creek, a tributary of the Bremer River.

Construction on the dam began in 1959, although land for the project was resumed as early as 1916. Completed in 1961 as the central catchment of the Warrill Valley Water Supply Scheme, the concrete dam structure is 38 metres (125 ft) high and 219 metres (719 ft) long and allows access to Mount Edwards in Moogerah Peaks National Park. The 315-thousand-cubic-metre (11.1×10^⁶ cu ft) dam wall holds back the 83,765-megalitre (1.8426×10¹⁰ imp gal; 2.2128×10¹⁰ US gal) reservoir when at full capacity. From a catchment area of 228 square kilometres (88 sq mi) that includes much of the north–eastern slopes of the Main Range, the dam creates Lake Moogerah, with a surface area of 827 hectares (2,040 acres). The uncontrolled spillway has a discharge capacity of 740 cubic metres per second (26,000 cu ft/s). Initially managed by SunWater, management of the dam was transferred to Seqwater in July 2008 as part of a water security project in the South East Queensland region, known as the South East Queensland Water Grid.