Bullfrog eradication is proceeding in the Empire Valley region, and may be completed in 2011 or 2012 if intensive removals in an upper reach of Cienega Creek are successful. Bullfrogs are in Babocomari Cienega and several ponds north of Elgin in the Babocomari drainage near the divide into the Cienega Creek basin. Crayfish in Empire Valley are confined to Clyne Pond, in the valley's southeast extreme, and intensive removal efforts are being ramped up to eradicate this nearly intractable infestation (crayfish are also in Babocomari as well as in Post Canyon and O'Donnell Cienega on and near Audubon Research Ranch). At least 9 non-native fish species were documented in Empire Valley region in 2010, including several potentially harmful to native aquatic vertebrates. Breeding populations of the Chiricahua Leopard Frog are persisting at Empire Gulch Spring and at least two sites in Santa Rita Mountains; this frog may be locally increasing in this region. The Lowland Leopard Frog is restricted to a small population in Wakefield Canyon (Whetstone Mountains) and Road Canyon Tank in upper Empire Valley (where it may be introduced; and from which it dispersed in summer 2010 to 10 other sites). The Mexican Gartersnake is persisting at low abundance in Cienega Creek: intensive surveys of its population and those of other aquatic species in the creek will be conducted in 2011.
Rosen, P.C. 2010. Annual Report to Bureau of Land Management for: 2010 CWP-UA Native Frog Conservation, Las Cienegas National Conservation Area (LCNCA). Tucson, AZ: University of Arizona School of Natural Resources and the Environment. February 1.