The Santa Catalina Ranger District governs the Santa Catalina Mountains, commonly referred to as the Catalina Mountains or the Catalinas, on the north and northeast of Tucson, Arizona. The mountain range is the most prominent in the Tucson area, with the highest average elevation. The highest point in the Catalinas is Mount Lemmon at an elevation of 9,157 feet (2,791 m) above sea level and receives 180 inches (460 cm) of snow annually. Due to the surrounding climate and the large elevation difference between the highest and lowest points, the mountain range also boasts several different “biome” types–or ecosystems dominated by certain groups of vegetation, from saguaro cactus to fir- and pine-dominated forests–allowing for a multitude of year-round recreational opportunities.
Originally known by the Tohono O’odham Nation as Babad Do’ag, the Catalinas were later named in 1697 by Italian Jesuit priest Eusebio Francisco Kino in honor of St. Catherine who was the patron saint of Kino’s oldest sister. Mount Lemmon is named after Sara Lemmon, a plant collector and the first white woman to ascend the peak in the 1870s.
Catalina Sky Survey (CSS), on Mt. Lemmon, is a project to discover comets and asteroids, and to search for near-Earth objects (NEOs). More specifically, CSS is to search for any potentially hazardous asteroids that may pose a threat of impact . Its southern hemisphere counterpart, the Siding Spring Survey (SSS) was closed in 2013.
The district also includes the Pusch Ridge Wilderness Area, created in an attempt to preserve one of the few remaining Arizona populations of Desert Big Horn Sheep. A reintroduction effort of 31 adult big horn sheep took place in 2013, which resulted in at least two naturally-born lambs the following year. Due to the sensitive nature of this effort, there are are certain restrictions on recreational use in this area that do not apply elsewhere in the district.
Latitude: 32.3457 Longitude: -110.6485
Counties: Cochise, Pima & Pinal
Douglas fir (Pseudotsuga menziesii)
Mountain mahogany (Cercocarpus breviflorus)
Ponderosa pine (Pinus ponderosa)
Single-leaf piñon pine (Pinus monophylla)
Saguaro (Carnegiea gigantea)
American black bear (Ursus americanus)
Bobcat (Lynx rufus)
Canyon Tree Frog (Hyla arenicolor)
Desert Big Horn Sheep (Ovis canadensis nelsoni)
Mountain lion/Cougar (Puma concolor)
Highest Point: Mt. Lemmon: 9,157 ft (2,790 m)
Lowest Point: Sabino Canyon: 2,800 ft (850 m)