**1. Introduction**

Algeria belongs to the Mediterranean basin; the Sahara occupies the major part of the country.

Algeria is located between Morocco and Tunisia forming the Maghreb (**Figure 1**).

This scientific article shows an overview of the geology, geothermal resources; chemical analyzes of water thermals therapeutic applications in Algeria.

#### **Figure 1.**

*Location map of Algeria in the world.*

**Figure 2.** *Geographical location of the study area.*

*The Hot Springs of Central Northern Algeria Hydro Geochemical and Therapeutic Aspects… DOI: http://dx.doi.org/10.5772/intechopen.97803*

In Algeria, balneotherapy is practically the only direct use of geothermal energy. Yet the country has more than two hundred hot springs distributed throughout the northern region of Algeria. About one-third (33%) have temperatures above 45° C. There are even sources at high temperatures of the order of 98° C in Guelma. Algeria is determined to diversify its economy, to free itself from its heavy dependence on oil revenues, by turning to the development of renewable energies. The study area is located north central Algeria between longitudes 2° and 5°. It is limited to the north by the Mediterranean Sea, the South by flexure south Atlas The geology of hydrothermal sites Hammam Melouane, Hammam Righa, Hammam Médéa and Hammam Bouira (a) (b) and is described in our field trips to determine the hydrogeological and hydrogeochemical characteristics of the underground environment (**Figure 2**).
