South, Little, or New Suli or Senie Lake is a small ephemeral lake in Golmud County, Haixi Prefecture, Qinghai Province, China. It lies in the southwest corner of the Qarhan Playa in the southeast Qaidam Basin. It is part of Qarhan's Bieletan subbasin, located south of Suli Lake and west of Dabiele Lake. It is principally fed from the southwest by the Zaohuo or Little Zaohuo River (小灶火河, Xiǎozàohuǒ Hé) and consists of a 1.5 km (0.58 sq mi) basin which gradually evaporates into three smaller ponds. As part of the Bieletan subbasin, it is rich in lithium chloride.

It takes its name from its position relative to the larger Suli Lake, itself supposedly a transcription of a Mongolian placename derived from the word for "temples" or "sideburns".

• Qarhan Playa & Qaidam Basin
• List of lakes & saltwater lakes of China

• "Cháidámù Péndì Dìmíng Jíjǐn 柴达木盆地地名集锦" [A Selection of Qaidam Basin Place Names], Official site (in Chinese), Da Qaidam: Wusute Yadan Geological Park, 2 May 2019.
• Yu Junqing; et al., "Geomorphic, Hydroclimatic, and Hydrothermal Controls on the Formation of Lithium Brine Deposits in the Qaidam Basin, Northern Tibetan Plateau, China" (PDF), Ore Geology Reviews, vol. No. 50, Amsterdam: Elvesier, pp. 171–183, doi:10.1016/j.oregeorev.2012.11.001 {{citation}}: |volume= has extra text (help).
• Yu Shengsong; et al. (2009), Chá'ěrhán Yánhé Zīyuán: Kěchíxù Lìyòng Yánjiū 察尔汗盐河资源: 可持续利用研究 [Qarhan Playa Resources: A Study of Sustainable Use] (PDF) (in Chinese), Beijing: Kexue Chubanshe.