The Warm Springs complex contains the only population of the Warm Springs pupfish (Cyprinodon nevadensis pectoralis
). The springs within the Warm Springs complex are small in comparison to other springs within the Refuge. However, numerous species can be found at the site such as the thermal endemic Warm Springs naucorid (Ambrysus relictus
) and Ash Meadows riffle beetle (Stenelmis calida
). Numerous threatened and endangered plant species, such as the Ash Meadows Ivesia (Ivesia eremica
) (Enceliopsis nudicaulis
), can also be found at the Warm Springs complex. Diversion of the spring sources and impoundment of flows behind berms has resulted in hydrologic alterations that reduce habitat quality and quantity for native species and often create conditions suitable for the establishment of invasive species. Big Spring contains the Ash Meadow pupfish Cyprinidon nevadensis mionectes
) and Ash Meadows speckled dace (Rhinichthys osculus nevadensis
). Spring channel alteration and invasive species introduction (primarily bass) endanger the continued existence of these two species that only occur at Ash Meadows.
In conjunction with Refuge staff and other agency stakeholders, Otis Bay assessed the restoration needs at the Warm Springs complex and at Big Spring. Otis Bay’s construction crew initiated restoration activities at the Warm Springs complex in 2007. See School Spring and Indian Spring. Further restoration activities within the Warm Springs complex or at Big Spring have been prioritized.
Otis Bay and project stakeholders have prioritized restoration actions at the Warm Springs complex and Big Spring, and construction crews have implemented restoration actions within the Warm Springs area.