The South West Slopes is a region predominantly in New South Wales, Australia. It covers the lower inland slopes of the Great Dividing Range extending from north of Cowra through southern NSW into western Victoria. More than 90% of the region is in the state of New South Wales and it occupies about 10% of that state.
The south western slopes bioregion covers the lower inland slopes of the Great Dividing Range extending from north of Cowra through southern NSW into eastern Victoria. More than 90% of the region is in the state of New South Wales and it occupies about 10% of that state - more than 80,000 km².
The bioregion includes parts of the Murray, Murrumbidgee, Lachlan and Macquarie River catchments.
The region can be divided into two sub-regions: 
- Northern Inland Slopes subregion
- Lower Slopes subregion
Protected areas within the bioregion
The South western Slopes of NSW are some of the most highly cleared and altered lands in the state. Native vegetation remains generally only in small, isolated patches. Substantial clearing continues. Less than 2% of the bioregion is protected as reserves. Conservation efforts are focussing on landholder stewardship agreements.
- National Parks: Benambra National Park, Conimbla National Park, Goobang National Park, Livingstone National Park, Minjary National Park, Nangar National Park, Weddin Mountains National Park, Woomargama National Park
- Nature reserves: Avisford Nature Reserve, Big Bush Nature Reserve, Boginderra Hills Nature Reserve, Buddigower Nature Reserve, Burrinjuck Nature Reserve, Copperhannia Nature Reserve, Dananbilla Nature Reserve, Dapper Nature Reserve, Downfall Nature Reserve, Ellerslie Nature Reserve, Eugowra Nature Reserve, Flagstaff Memorial Nature Reserve, Ingalba Nature Reserve, Koorawatha Nature Reserve, Mudjarn Nature Reserve, Mullengandra Nature Reserve, Munghorn Gap Nature Reserve, Narrandera Nature Reserve, Nest Hill Nature Reserve, Pucawan Nature Reserve, Razorback Nature Reserve, Tabletop Nature Reserve, The Charcoal Tank Nature Reserve, The Rock Nature Reserve, Ulandra Nature Reserve, Wiesners Swamp Nature Reserve
- Historic sites: Hill End Historic Site, Yuranighs Aboriginal Grave Historic Site
The South Western Slopes was occupied by the Wiradjuri people, the largest Aboriginal language group in NSW.
Towns within the bioregion from Albury in the south to Dunedoo in the northeast, include Wagga Wagga, Junee, Cootamundra, Tumut, Tumbarumba, Gundagai and Young. Griffith lies just outside the western boundary and Crookwell lies just outside the eastern boundary of the bioregion.
Local Government Areas included in the bioregion:
- Mid-Western Regional Council - townships of Rylstone (on the border) and Mudgee
- Cabonne Shire including the town of Molong
- Weddin Shire including the town of Grenfell
- Bland Shire, including the town of West Wyalong
- Boorowa Council
- Temora Shire
- Cootamundra Shire
- Gundagai Shire
- Tumut Shire
- Tumbarumba Shire
- City of Wagga Wagga
- City of Albury
- Greater Hume Shire
Important Bird Area
An area of 25,653 km2, largely coincident with the bioregion, has been identified by BirdLife International as the South-west Slopes of NSW Important Bird Area (IBA) because it supports a significant wintering population of endangered Swift Parrots and most of the largest population of vulnerable Superb Parrots, as well as populations of Painted Honeyeaters and Diamond Firetails.
Most of the site is modified wheat-growing and sheep-grazing country with only vestiges of its original vegetation. Remnant patches of woodland and scattered large trees, especially of Mugga Ironbark, Apple Box, Grey Box, White Box, Yellow Box, Red Box, Yellow Gum, River Red Gum and Blakely's Red Gum, still provide habitat for the parrots. Protected areas within the site include several nature reserves and state forests, as well as the Livingstone and Weddin Mountains National Parks, and Tarcutta Hills Reserve. Mean annual temperatures in the region range from 10-16°C, with an annual rainfall of 500–1150 mm.
Forecast area for Bureau of Meteorology
The south west slopes forecast area used by the Bureau of Meteorology includes Young and Tumbarumba. The area is smaller than that defined as a bioregion by the National Parks and Wildlife Service.
- ^ a b NSW NPWS Map of bioregion (pdf)
- ^ Thackway, R. and I D Cresswell (Editors) (1995, web page last updated 2005). "New South Wales South West Slopes: from Description of IBRA Regions for Australia". An Interim Biogeographic Regionalisation for Australia: A Framework for Setting Priorities in the National Reserves System Cooperative Program. Australian Nature Conservation Agency (On internet by Department of the Environment and Heritage (Australia)). Archived from the original on 2006-09-04. http://web.archive.org/web/20060904200801/http://deh.gov.au/parks/nrs/ibra/version4-0/framework/app1.html#nss. Retrieved 2006-08-14.
- ^ NSW National Parks and Wildlife Service information about the bioregion
- ^ a b "Biodiversity Assessment - NSW South Western Slopes". Australian Natural resources Atlas. Department of the Environment and Heritage (Australia). 2002. http://audit.deh.gov.au/ANRA/atlas_home.cfm. Retrieved 2006-08-14.
- ^ "South Western Slopes - bioregional-scale conservation". National Parks and Wildlife Service. 2004. http://www.nationalparks.nsw.gov.au/npws.nsf/Content/South+Western+Slopes+-+bioregional-scale+conservation. Retrieved 2006-08-14.
- ^ "South Western Slopes - regional history". National Parks and Wildlife Service. 2004. http://www.nationalparks.nsw.gov.au/npws.nsf/Content/South+Western+Slopes+-+regional+history. Retrieved 2006-08-14.
- ^ "IBA: South-west Slopes of NSW". Birdata. Birds Australia. http://www.birdata.com.au/iba.vm. Retrieved 2011-10-13.
- ^ BirdLife International. (2011). Important Bird Areas factsheet: South-west Slopes of NSW. Downloaded from http://www.birdlife.org on 2011-10-19.
- ^ New South Wales Forecast Area Map
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