The area around the city is filled with dozens of waterfalls, streams, dams and pine forest, which has not varied too much since the arrival of the Chichimecas. The municipality is located in the
Sierra Norte de Puebla region, which is part of the
Sierra Madre Oriental. The terrain is rugged with numerous mountains, waterfalls and deep depressions, with altitudes varying from between 1000 and 3000 meters above sea level. The highest altitudes are found in the southwest with the lowest areas in the northeast near the Necaxa and Tenango Dams. Main peaks include Teochocatitla, Huitzipetl, Azacamitl, Ixipetl, Chiltepetl, Cojuinalayola, Osamatípetl, Netatiltépetl and Tlahuatzapila. A noted peak near the city is Necaxaltepetl whose summit is frequently climbed by hikers.
Hydrography Most of the municipality is part of the
Necaxa River basin with the extreme northeast belonging to the San Marcos River basin. The Nexaca forms in the south of the municipality, flowing southwest to northwest through deep ravines and forming waterfalls such as the Salto Chico and Salto Grande, both of which are used to generate electricity. The river feeds the Necaxa Dam along with tributaries such as the Texcapa, Chapultepec, La Malva, Hayatlaco, Dos Puentes, Xoctongo, Mazontla and Cuacuila. In the north, the main river is the Naupan, which is a tributary of the San Marcos River. Part of the Necaxa Dam reservoir is in the municipality. This dam was construction in 1900 and filled by the waters of the Necaxa and Tenango Rivers. In addition to water storage, the dam also generates electricity for the area. Other notable waterfalls include the Ocpaco, Totolapa and Teopancingo.
Climate The area is one of the wettest in the state of Puebla, mostly due to moisture from the
Gulf of Mexico. The municipality has two climates. One is humid and temperate with rains year round and an average annual temperature of between . The other is semi hot and semi-humid with rains all year and an average annual temperature over . The latter is found in the lowest elevations on the east side.
Flora and fauna Wild vegetation mostly consists of forest of pines and pine-
holm oak, warm climate mountain forest, and some high growth rainforest in isolated pockets. Wildlife includes
armadillos, foxes, ducks, rabbits,
moles,
opossums, bats, with some endangered species such as deer, wild cats,
porcupines and coyotes. ==Economy==