Hot springs exist around Koh-i-Sultan, with the Talu spring the best known. Other springs (Batal Kaur, Miri Kaur and Padagi Kaur) are in riverbeds near the Miri crater. Temperatures of have been measured in water samples, but the three springs have temperatures lower than the ambient temperature: . The hydrothermal activity suggests a magma chamber beneath the volcano. Water is probably stored in fractures within the Sinjrani volcanics, and is heated by a reservoir with a temperature of or . At least one spring is associated with a fault. Isotope data and composition indicate that the hot-spring water is precipitation-related; its composition is modified by interaction with hot rocks, with the water following a path beginning northeast of Miri crater. Country-rock salts, probably dissolved by sulfuric acid, are found in the waters. The springs' sulfur is of magmatic origin. Hydrothermal activity has modified the rocks around Koh-i-Sultan, with Miri Kaur featuring silicified rocks and the area southwest of Miri featuring acidic alteration. Some springs in the area have a very low pH. The region is the least developed in Pakistan, and Koh-i-Sultan may be a usable source of geothermal energy; however, the lack of rainfall may make it hydrologically unsuitable for energy generation.