{{short description|Dam in Victoria, Australia}} {{Use Australian English|date=May 2013}} {{Use dmy dates|date=September 2022}} {{Infobox dam | name = Rocklands Dam | name_official = | image = | image_size = 240px | image_caption = | image_alt = | location_map = Victoria | location_map_size = 240 | location_map_caption = Location of the dam in [[Victoria (state)|Victoria]] | mapframe = yes | coordinates = {{coord|-37.234617|141.959968|type:landmark_region:AU-VIC|display=inline,title|format=dms}} | country = Australia | location = [[Wimmera]], [[Victoria (state)|Victoria]] | purpose = W | status = O | construction_began = 1938 | opening = 1953 | demolished = | cost = | owner = GWM Water | dam_type = {{ubl|[[Gravity dam]]|[[Rock-filled dam]]}} | dam_height = {{cvt|24|m}} | dam_height_thalweg = | dam_height_foundation = | dam_length = {{cvt|490|m}} | dam_width_crest = | dam_width_base = | dam_volume = {{cvt|69|e3m3}} | dam_elevation_crest = | dam_crosses = [[Glenelg River (Victoria)|Glenelg River]] | spillway_count = 1 | spillway_type = [[Spillways#Types|Uncontrolled]] | spillway_capacity = {{cvt|764|m3/s}} | res_name = Rocklands Reservoir | res_capacity_total = {{cvt|348310|ML|acre.ft}} | res_capacity_active = {{cvt|261510|ML|acre.ft}} | res_capacity_inactive = | res_catchment = {{cvt|1380|km2}} | res_surface = {{cvt|6850|ha}} | res_elevation = {{cvt|195.5|m}} {{AHD}} | res_max_depth = {{cvt|17|m}} | res_max_length = | res_max_width = | res_tidal_range = | plant_operator = | plant_commission = | plant_decommission = | plant_type = | plant_turbines = | plant_capacity = | plant_annual_gen = | website = {{URL|https://www.gwmwater.org.au/information/information-reservoir-levels/rocklands-reservoir|gwmwater.org.au}} | extra = <ref name=ANCOLD/> }} The '''Rocklands Dam''' is a [[gravity dam]] with rock-filled [[embankment dam|embankments]] across the [[Glenelg River (Victoria)|Glenelg River]], located in the [[Wimmera]] region of [[Victoria (state)|Victoria]], Australia. Completed in 1953, the resultant [[eponymous]] [[reservoir]], the '''Rocklands Reservoir''', was created for the [[water supply|supply]] of [[potable water]] for the region. The dam and reservoir are the largest operated by Grampians–Wimmera–Mallee Water (GWMWater).
== Dam and reservoir overview == === Dam === Construction of the dam began in 1938; however, during [[World War II]], construction ceased, recommenced in 1950, and the dam was completed in 1953. The concrete-faced dam wall is {{convert|24|m}} high and {{convert|490|m}} long. When full, the resultant reservoir has a storage capacity of {{convert|348.31|GL|acre.ft|lk=on}} and covers {{convert|6850|ha}}, drawn from a [[drainage basin|catchment area]] of {{convert|1380|km2}}. The [[Spillway#Types|uncontrolled spillway]] has a discharge capacity of {{convert|764|m3/s}}.<ref name=ANCOLD>{{cite web |title=Register of Large Dams Australia-2015 |date=January 2022 |access-date=2026-03-05 |url=https://ancold.org.au/information-resources/dams-information/ |work=[[ANCOLD]] |format=[[Microsoft Excel|Excel]]. Requires download. Row 428}}</ref> The main wall is flanked by two {{convert|15|m|ft|adj=mid|-high}} embankment sections.<ref>{{cite web|title=Rocklands Reservoir|url=http://www.gwmwater.org.au/information/information-reservoir-levels/rocklands-reservoir|work=GWM Water|accessdate=20 August 2013|archive-date=6 March 2014|archive-url=https://web.archive.org/web/20140306143828/http://www.gwmwater.org.au/information/information-reservoir-levels/rocklands-reservoir|url-status=dead}}</ref>
=== Reservoir === Originally constructed to supply the Wimmera-Mallee Domestic and Stock channel system, water held by the reservoir is now used for many different purposes. A unique feature of the reservoir is that all entitlement holders, including the environment,{{clarify|date=May 2026}} are able to be supplied with water from the reservoir.
The reservoir is a popular recreational boating location, with [[powerboating]], [[water skiing]] and [[personal watercraft|jet skiing]] allowed. Camping is permitted in designated areas. During the [[duck hunting]] season, duck shooting is allowed. It is also a popular fishing spot, with [[Murray cod]], [[European perch|redfin]], [[trout]] and [[Eurasian carp|carp]] taken at all times of the year. The reservoir was one of the premier carp fishing destinations in the late 1990s and early 2000s with carp in excess of {{convert|10|kg}} regularly caught.{{cn|date=May 2026}}
The reservoir is listed on the [[Southern Grampians Shire]] local government [[Victorian Heritage Inventory|heritage register]].<ref>{{cite VHD |23255 |Rocklands Reservoir |hr= |ho= |ho2= |hi=23255 |access-date=2026-05-12 }}</ref> <!-- This content is irrelevant: ==Climate== {{Weather box|width=auto |metric first=y |single line=y |collapsed = Y |location = Woohlpooer, elevation {{convert|250|m|ft|abbr=on}} |Jan record high C = 43.6 |Feb record high C = 40.3 |Mar record high C = 38.0 |Apr record high C = 32.8 |May record high C = 25.0 |Jun record high C = 18.3 |Jul record high C = 20.5 |Aug record high C = 21.4 |Sep record high C = 26.7 |Oct record high C = 31.1 |Nov record high C = 36.1 |Dec record high C = 39.2 | year record high C = 43.6 |Jan record low C = 3.3 |Feb record low C = 4.4 |Mar record low C = 1.3 |Apr record low C = -0.6 |May record low C = -2.8 |Jun record low C = -4.4 |Jul record low C = -4.0 |Aug record low C = -3.1 |Sep record low C = -1.7 |Oct record low C = -1.7 |Nov record low C = 0.6 |Dec record low C = 3.0 | year record low C = -4.4 |Jan high C = 27.6 |Feb high C = 26.9 |Mar high C = 24.5 |Apr high C = 19.7 |May high C = 15.2 |Jun high C = 12.6 |Jul high C = 11.9 |Aug high C = 13.1 |Sep high C = 15.5 |Oct high C = 18.1 |Nov high C = 20.4 |Dec high C = 24.2 | year high C = 19.1 |Jan low C = 11.0 |Feb low C = 11.9 |Mar low C = 10.2 |Apr low C = 7.4 |May low C = 5.7 |Jun low C = 3.2 |Jul low C = 3.3 |Aug low C = 3.6 |Sep low C = 4.7 |Oct low C = 6.2 |Nov low C = 7.6 |Dec low C = 9.3 | year low C = 7.0 |rain colour = green |Jan rain mm = 34.8 |Feb rain mm = 39.4 |Mar rain mm = 35.1 |Apr rain mm = 57.6 |May rain mm = 78.5 |Jun rain mm = 63.7 |Jul rain mm = 81.4 |Aug rain mm = 86.3 |Sep rain mm = 74.0 |Oct rain mm = 66.0 |Nov rain mm = 54.3 |Dec rain mm = 43.2 |year rain mm = 713.0 |unit rain days = 1.0 mm | Jan rain days = 3.8 | Feb rain days = 3.9 | Mar rain days = 4.7 | Apr rain days = 6.9 | May rain days = 10.6 | Jun rain days = 9.6 | Jul rain days = 12.9 | Aug rain days = 13.4 | Sep rain days = 11.3 | Oct rain days = 9.1 | Nov rain days = 8.0 | Dec rain days = 6.4 | year rain days = 100.6 |source 1 = Australian Bureau of Meteorology<ref name="BoM" >{{cite web | url = http://www.bom.gov.au/climate/averages/tables/cw_089036_All.shtml | title = Climate statistics for Australian locations- WOOHLPOOER | date = 8 July 2024}}</ref> }} -->
== See also == {{stack|{{portal|Victoria|Water}}}} * [[List of reservoirs and dams in Australia#Victoria|List of reservoirs and dams in Victoria]]
== References == {{reflist}}
== External links == * {{cite report |url=https://vhd.heritagecouncil.vic.gov.au/index.php/places/23255/download-report |title=Rocklands Reservoir |work=[[Victorian Heritage Inventory]] |date=2003-08-01 |access-date=2026-05-12 }}
{{Rivers of the Glenelg Hopkins catchment}} {{WaterVictoria |state=collapsed}}
[[Category:1953 establishments in Australia]] [[Category:Concrete-face rock-fill dams]] [[Category:Dams completed in 1953]] [[Category:Dams in Victoria (state)]] [[Category:Glenelg Hopkins catchment]] [[Category:Gravity dams]] [[Category:Reservoirs in Victoria (state)]] [[Category:Rivers of Barwon South West (region)]] [[Category:Wimmera]]