See and use Nyangumarta A61.
'Most Nyangumarta speakers and others who study this language recognise two main dialects: inland or southern Nyangumarta (sometimes called Ngurlipartu) and coastal or northern Nyangumartu (sometimes called Walyirli). Though certain words are different between these two dialects, it's important to remember that they are very much alike and that Nyangumarta speakers still think of them as being part of the same language' (Geytenbeek et. al. 2015: viii).
Sharp's (2004:4) informants identify Pijikala, to the north near Lake Waukarlykarly, as one of four Nyangumarta A61 dialects. The others are reported to be Kuntal A98, Ngurlipartu A72 to the south, and Walyirli A73, the dialect spoken at Yandeyarra and the Twelve Mile Reserve on the outskirts of Port Hedland. From a linguistic perspective Sharp recognises two distinct types of Nyangumarta, Ngurlipartu A72 and Walyirli A73, which she refers to as northern coastal Nyangumarta and southern inland Nyangumarta respectively.
... to the north near Lake Waukarlykarly (Sharp 2004:4).
Speaker numbers were measured differently across the censuses and various other sources listed in AUSTLANG. You are encouraged to refer to the sources.
Speaker numbers for ‘NILS 2004’ and ‘2005 estimate’ come from 'Table F.3: Numbers of speakers of Australian Indigenous languages (various surveys)' in 'Appendix F NILS endangerment and absolute number results' in McConvell, Marmion and McNicol 2005, pages 198-230 (PDF, 2.5MB).