Loch McNess

{{Short description|Lake in Perth, Western Australia}}

{{Use dmy dates|date=August 2015}}

{{Use Australian English|date=August 2015}}

{{Infobox body of water

| name = Loch McNess

| native_name ={{native name|nys|Wagardu Lark}}

| other_name = Yanchep Lake

| image = Yanchep_sunset.jpg

|pushpin_map=Western Australia

| image_size = 280

| caption = Sunset over Loch McNess

| image_bathymetry =

| caption_bathymetry =

| location = Swan Coastal Plain, Western Australia

| coords = {{coord|31|32|S|115|40|E|type:waterbody_region:AU-WA|display=inline,title}}

| type = Freshwater

| inflow =

| outflow =

| catchment =

| basin_countries = Australia

| designation = Yanchep National Park

| length =

| width =

| area =

| depth =

| max-depth = {{cvt|3.4|m}}

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| shore =

| elevation =

| islands = Several

| cities =

| reference = [http://www.agu.org/pubs/crossref/2004/2003WR002899.shtml Predicting wetland water storage]{{full citation needed |date=April 2025}}

| embedded={{Infobox mapframe

|stroke-colour=#C60C30

|stroke-width=3

|marker=water

|marker-colour=#1F2F57

|zoom=13

}}

}}

Loch McNess ({{langx|nys|Wagardu Lark}}),{{Cite web |url=http://www.perthsites.com/web/design.cgi?website=1053-yanchep-national-park |title=Yanchep National Park. Yanchep, Western Australia. Akerz Does Australia |access-date=4 December 2007 |archive-date=2 September 2007 |archive-url=https://web.archive.org/web/20070902095448/http://www.perthsites.com/web/design.cgi?website=1053-yanchep-national-park |url-status=dead }} also known as Yanchep Lake, is a freshwater lake located near Yanchep in the northern part of the coastal plain of Perth, Western Australia. Loch McNess is part of the Wanneroo wetlands, a chain of lakes, and is part of the Yanchep National Park. Water from the lake was used to refill the underground pools and streams in some of the nearby caves, however the project was ultimately unsuccessful and subsequently discontinued.{{Cite web|url=http://www.abc.net.au/catalyst/stories/s1079043.htm|title=Caves|website=Australian Broadcasting Corporation |date=April 2004}}{{Cite web |last=Kruijff |first=Peter de |date=2022-06-16 |title=Once used to moor rowboats, the jetties on this Yanchep lake now sit 10 metres from the shore |url=https://www.smh.com.au/environment/climate-change/perth-s-ancient-shrimp-link-to-gondwana-presumed-lost-20220616-p5aual.html |access-date=2024-10-07 |website=The Sydney Morning Herald |language=en}}