Glenlyon Dam

{{Use Australian English|date=June 2020}}

{{Use dmy dates|date=August 2019}}

{{Infobox body of water

| name = Pike Creek Reservoir

| image = Glenlyon Dam spillway.jpg

| caption =

| image_bathymetry =

| caption_bathymetry =

| location = Queensland

| coordinates = {{coord|-28.9698|151.465|region:AU|display=inline,title}}

| type = reservoir

| inflow = Pike Creek

| outflow = Pike Creek

| pushpin_map = Queensland

| catchment = {{convert|1295|km2|abbr=on}}

| basin_countries = Australia

| length =

| width =

| area = {{convert|1800|ha|abbr=on}}

| depth = {{convert|4.3|m|abbr=on}}

| max-depth =

| volume = {{convert|254,000|ML|abbr=on}}

| residence_time =

| shore =

| elevation =

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}}

Glenlyon Dam, also known as Pike Creek Reservoir, is an earth and rockfill dam in Queensland near the border with New South Wales, roughly between Stanthorpe and Texas to the west.{{cite QPN|43057|Glenlyon Dam|dam wall in Southern Downs Regional|access-date=30 August 2023}} From 1972 to 1976, the dam wall was built on Pike Creek, a tributary of the Dumaresq River, {{convert|5|km|mi|abbr=on}} upstream from the confluence of the Mole River and the Severn River branching from the Dumaresq. Its impoundment is known as Lake Glenlyon.{{cite QPN|14000|Lake Glenlyon|lake in Southern Downs Regional|access-date=30 August 2023}}{{Cite web |title=Glenlyon Dam |url=https://www.sunwater.com.au/dams/glenlyon-dam |access-date=2023-12-27 |website=Sunwater |language=en-AU}}

The dam has a capacity of 253,000 megalitres, a catchment area of 1,295 square kilometres and covers an area of 1,750 hectares at full supply level.

Glenlyon Dam provides water for irrigation of grain and fodder crops. It is managed by SunWater. Swimming, fishing, boating and water skiing are all permitted, with no restrictions on boating except near the dam wall.{{cite web |url=http://www.sweetwaterfishing.com.au/glenlyon.htm |title= Glenlyon Dam ( Pike Creek Reservoir ) - Stanthorpe. Qld |publisher=Sweetwater Fishing Australia |access-date=2006-11-13}} Two boat ramps facilitate access for boating. In the upper reaches of feeder creeks, there are large areas of standing timber and submerged logs.

In December 1994, the dam reached a critically low level of 2.2% and the next year it rose to just 12% of capacity during a series of droughts in Australia.Collie, Gordon. Worst drought of century cripples farmers. The Courier Mail. 26 August 1995. The dam reached a peak of 110.78% on January 12, 2011, during the 2010–2011 Queensland floods.{{Cite web|title=Glenlyon Dam|url=https://www.sunwater.com.au/dams/glenlyon-dam/|access-date=2021-10-29|website=Sunwater|language=en-AU}}