Together with four other rivers, the El Tejocotal, Los Reyes, Patla, and Tenango, the Necaxa produces a total of 172 million litres of water generating electrical power not only for Puebla, but for the states of Tlaxcala, Hidalgo, Mexico, and the Federal District, in addition to many people in the center of the country.

[1] The river basin's reservoirs are habitat for waterfowl, including the great egret (Ardea alba), snowy egret (Egretta thula), little blue heron (Egretta caerulea), neotropic cormorant (Phalacrocorax olivaceus), ringed kingfisher (Megaceryle torquata), and green kingfisher (Chloroceryle americana).

The protected forest zone covers an area of 421.29 km2 in the municipalities of Acaxochitlán, Cuautepec de Hinojosa, Naupan, Huauchinango, Juan Galindo, Xochiltepec, Zihuateutla, Tlaola, Chiconcuautla, Jolalpan, Zacatlán, and Ahuazotepec.

[3] The five reservoirs in the basin were designated a Ramsar site (wetland of international importance) on 2 February 2008.

Then drive to Huauchinango with final destination to "El Salto" (the location of a CFE's hydroelectric plant).