Western Australia has many watercourses with gazetted names, including rivers, streams, brooks, creeks, gullies, anabranches and backwaters.

This list is complete with respect to the 1996 Gazetteer of Australia.Gazetteer of Australia (1996). Belconnen, ACT: Australian Surveying and Land Information Group. Dubious names have been checked against the online 2004 data, and in all cases confirmed correct. However, if any watercourses have been gazetted or deleted since 1996, this list does not reflect these changes. Strictly speaking, Australian place names are gazetted in capital letters only; the names in this list have been converted to mixed case in accordance with normal capitalisation conventions. Locations are as gazetted; some watercourses may extend over long distances.

N Name Latitude Longitude Remarks Naasra Creek 15° 44' 14" S 128° 18' 1" E Nairn Brook 32° 48' 26" S 116° 44' 20" E Nakar Creek 21° 40' 40" S 127° 46' 47" E Nalgomia Creek 23° 54' 41" S 118° 41' 7" E Nallan Creek 27° 28' 33" S 117° 41' 16" E Nalyaring Gully 32° 17' 22" S 117° 11' 55" E Nalyerlup Creek 34° 14' 7" S 118° 24' 58" E Nambab Brook 31° 41' 43" S 116° 1' 0" E Nambeelup Brook 32° 31' 37" S 115° 48' 10" E Nambling Creek 31° 25' 40" S 116° 27' 29" E Nambrock Creek 28° 35' 46" S 122° 29' 25" E Nambung River 30° 32' 33" S 115° 8' 53" E Namingnurrabunga Creek 25° 30' 0" S 122° 44' 38" E Nanamullen Brook 31° 43' 12" S 116° 31' 23" E Nananah Creek 20° 9' 10" S 119° 14' 4" E Nanga Brook 32° 48' 6" S 116° 6' 12" E Nangaloo Creek 16° 19' 4" S 125° 32' 44" E Nangerwalla Creek 28° 19' 38" S 115° 24' 28" E Nangetty Creek 29° 4' 21" S 115° 25' 12" E Nangip Gully 33° 20' 5" S 116° 43' 42" E Nannup Brook 34° 1' 0" S 115° 49' 9" E Nanthana Creek 21° 1' 0" S 117° 4' 59" E Nanular Creek 25° 2' 29" S 117° 31' 55" E Nanular Well 25° 9' 54" S 117° 34' 23" E Nanyerinny Creek 24° 50' 6" S 120° 1' 53" E Napalgunia Creek 31° 0' 54" S 122° 31' 33" E Napier Creek 34° 51' 19" S 117° 59' 26" E Napier Creek 16° 38' 2" S 126° 19' 41" E Napier Creek 17° 20' 37" S 124° 40' 22" E Naramucking Gully 32° 42' 45" S 117° 17' 35" E Nardoo Creek 24° 35' 13" S 116° 3' 26" E Nareling Gully 31° 40' 17" S 117° 43' 3" E Naroo Creek 25° 40' 29" S 125° 46' 59" E Narpunup Creek 34° 31' 34" S 117° 40' 46" E Narrakine Gully 33° 4' 21" S 117° 13' 9" E Narrikup Brook 34° 44' 46" S 117° 33' 36" E Narrina Creek 21° 10' 42" S 117° 23' 20" E Narrindup Creek 34° 12' 51" S 118° 14' 4" E Narrogin Brook 33° 2' 15" S 117° 18' 58" E Naughton Creek 24° 0' 25" S 114° 55' 33" E Naunenup Creek 34° 7' 19" S 118° 39' 42" E Nazareth Brook 31° 24' 24" S 116° 28' 42" E Neamutin Gully 32° 37' 18" S 117° 15' 43" E Ned Creek 31° 37' 54" S 116° 47' 21" E Neebannon Gully 33° 18' 33" S 117° 38' 49" E Needilup River 33° 50' 4" S 118° 50' 59" E Neerigen Brook 32° 8' 59" S 115° 58' 19" E Negrara Creek 26° 35' 1" S 120° 17' 57" E Negri Creek 26° 11' 53" S 119° 36' 45" E Negri River 17° 4' 13" S 128° 53' 12" E Neil Creek 16° 26' 43" S 126° 49' 43" E Neil Creek 16° 49' 20" S 127° 50' 29" E Nellie Creek 22° 1' 3" S 120° 38' 6" E Nellie Hayes Creek 27° 7' 42" S 123° 51' 55" E Nemile Creek 17° 49' 14" S 124° 27' 44" E Nemura Brook 30° 36' 14" S 116° 16' 10" E Nena Brook 31° 34' 37" S 116° 37' 54" E Nergaminon Creek 30° 20' 28" S 116° 4' 25" E Nerrima Creek 18° 8' 24" S 124° 3' 22" E Nestle Brae Creek 31° 57' 14" S 116° 1' 21" E Neurklegin Gully 33° 10' 37" S 117° 34' 17" E Neville Creek 16° 18' 49" S 124° 57' 47" E New River 33° 40' 7" S 115° 18' 16" E Newman Creek 24° 26' 30" S 115° 21' 59" E Newman Gully 33° 9' 49" S 117° 15' 35" E Newtown Creek 31° 13' 23" S 121° 38' 37" E Ngarrin Creek 20° 44' 0" S 120° 20' 58" E Ngatitjiri Creek 21° 52' 48" S 127° 53' 32" E Ngoollalah Creek 14° 50' 24" S 126° 19' 58" E Ngunda Creek 15° 11' 38" S 127° 39' 36" E Nhillabublica Creek 18° 7' 27" S 125° 51' 2" E Niagara Creek 29° 30' 46" S 121° 24' 27" E Nicholson River 17° 34' 5" S 128° 38' 43" E Nicker Creek 21° 32' 41" S 128° 44' 37" E Nickol River 20° 42' 49" S 116° 55' 24" E Nigallia Creek 25° 43' 18" S 115° 4' 38" E Nile Creek 34° 51' 27" S 117° 4' 18" E Niliamongup Creek 34° 1' 46" S 118° 10' 58" E Nimbedilling Brook 32° 28' 43" S 117° 2' 55" E Nimberline Creek 15° 57' 39" S 128° 1' 40" E Nimerry Creek 20° 57' 16" S 119° 57' 32" E Nimingarra Creek 21° 0' 0" S 117° 25' 57" E Nindilbillup Creek 33° 23' 10" S 120° 15' 45" E Ningerin Gully 31° 3' 13" S 116° 58' 43" E Ninterup Creek 34° 14' 0" S 118° 24' 53" E Nipper Creek 18° 42' 17" S 125° 45' 43" E Nipper Creek 22° 32' 48" S 114° 19' 15" E Nixon Creek 16° 18' 20" S 125° 31' 28" E Noneycup Creek 33° 33' 55" S 115° 49' 1" E Noolawayoo Creek 14° 40' 28" S 126° 22' 34" E Noombling Brook 32° 31' 7" S 117° 0' 28" E Noondathoona Creek 21° 27' 56" S 116° 46' 1" E Noondine Gully 30° 36' 48" S 116° 3' 36" E Noorubup Creek 34° 39' 13" S 118° 4' 3" E Nora Welstead Creek 26° 40' 52" S 123° 45' 19" E Norah Brook 33° 11' 21" S 115° 50' 59" E Noreena Creek 22° 14' 21" S 120° 36' 18" E Norilup Brook 33° 53' 18" S 115° 58' 1" E Norman Creek 17° 33' 52" S 124° 15' 51" E Norna Creek 34° 42' 34" S 117° 51' 17" E Norning Gully 32° 6' 12" S 116° 44' 35" E North Creek 16° 9' 2" S 126° 27' 44" E North Dandalup River 32° 35' 15" S 115° 53' 28" E Northern Gully 28° 45' 3" S 114° 54' 17" E Noseda Creek 13° 59' 57" S 126° 52' 53" E Nugget Creek 16° 20' 16" S 126° 55' 14" E Nuggets Creek 17° 23' 47" S 125° 54' 11" E Nuggety Gully 18° 16' 29" S 127° 51' 55" E Nuilee Nowra Creek 21° 41' 0" S 115° 58' 0" E Nulbunmeri Creek 15° 3' 30" S 127° 42' 39" E Nullagine River 20° 43' 13" S 120° 34' 13" E Nullilla Brook 31° 25' 7" S 115° 55' 23" E Nungabie Creek 23° 14' 2" S 115° 10' 22" E Nungunambulu Galuru Creek 15° 46' 10" S 124° 40' 19" E Nunyerry Creek 21° 24' 30" S 117° 56' 28" E Nyaania Creek 31° 55' 56" S 116° 3' 48" E Nyarra Creek 25° 48' 45" S 115° 21' 44" E Nyarrva Creek 16° 20' 21" S 123° 42' 35" E Nyerilup Creek 33° 50' 57" S 118° 48' 50" E Nyia Creek 15° 26' 11" S 127° 33' 18" E Nymphaea Creek 14° 50' 33" S 126° 55' 5" E Nyngan Brook 32° 47' 41" S 116° 0' 38" E Nyulasy Creek 18° 13' 31" S 128° 12' 32" E Nyunti Creek 20° 52' 36" S 127° 17' 36" E

O Name Latitude Longitude Remarks O'Brien Creek 23° 13' 53" S 118° 4' 22" E O'Donnell Brook 16° 44' 4" S 128° 13' 2" E O'Donnell River 18° 20' 39" S 126° 35' 56" E O'Neill Brook 32° 30' 48" S 116° 11' 22" E Oakabella Creek 28° 31' 49" S 114° 21' 36" E Oakes Creek 15° 17' 35" S 129° 0' 0" E Oakley Brook 32° 38' 27" S 115° 52' 25" E Oakley Wash 24° 0' 47" S 115° 38' 23" E Oakover Creek 31° 39' 22" S 116° 42' 19" E Oakover River 20° 43' 46" S 120° 40' 33" E Obstinate Creek 21° 27' 54" S 118° 34' 29" E Octa Creek 16° 23' 42" S 128° 50' 8" E Old Doongan Creek 15° 19' 15" S 126° 36' 8" E Old Mill Gully 31° 56' 27" S 116° 7' 42" E Old Shaw Creek 21° 42' 40" S 119° 25' 23" E Old Station Creek 16° 39' 59" S 128° 49' 37" E Old Station Creek 15° 39' 8" S 128° 41' 35" E Old Stockyard Brook 33° 6' 47" S 116° 29' 33" E Oldfield River 33° 53' 13" S 120° 47' 8" E One Gum Creek 25° 52' 38" S 115° 30' 21" E One Tree Creek 25° 19' 25" S 115° 46' 46" E Ongarup Creek 34° 15' 25" S 118° 12' 24" E Ongerup Creek 33° 58' 30" S 118° 24' 32" E Onslow Creek 24° 25' 12" S 115° 29' 29" E Oobagooma Creek 16° 43' 14" S 124° 3' 36" E Oolrui Creek 16° 13' 10" S 126° 59' 55" E Oombalot Creek 16° 18' 6" S 125° 18' 11" E Oombiet Creek 16° 42' 21" S 125° 12' 11" E Ooranggatup Creek 34° 39' 40" S 117° 35' 26" E Opal Well Creek 26° 7' 49" S 118° 52' 14" E Opossum Spring Gully 33° 1' 58" S 116° 17' 36" E Orchid Creek 14° 51' 35" S 126° 49' 30" E Ord Creek 17° 20' 1" S 125° 52' 12" E Ord River 15° 12' 11" S 128° 11' 56" E Ornabullup Creek 34° 10' 27" S 117° 0' 12" E Orup Creek 34° 31' 18" S 117° 37' 46" E Osmand Creek 17° 9' 40" S 128° 50' 35" E Otho River 33° 16' 39" S 115° 59' 22" E Our Brook 34° 54' 34" S 116° 37' 21" E Our Creek 18° 31' 44" S 123° 26' 42" E Oven Creek 16° 51' 54" S 125° 25' 50" E Overflow Creek 19° 44' 20" S 127° 28' 22" E Oyster Creek 24° 55' 16" S 113° 39' 40" E

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