This study presents a comprehensive analysis of experimental data on the density, dynamic viscosity, and kinematic viscosity of the thermal waters of "Ilisu Sangar" and "Ilisu Beshbulag," located in the northern region of the Gakh district in the Republic of Azerbaijan. The experiments on the density, dynamic viscosity, and kinematic viscosity of the thermal waters were conducted using advanced instrumentation manufactured in Germany. The densities of the "Ilisu Sangar" and "Ilisu Beshbulag" thermal waters were precisely quantified using the "Anton-Paar SVM-300 Stabinger" viscometer, while their dynamic viscosities were determined with high precision utilizing the DMA 5000 M apparatus. Using the experimental data of p=f (u) p and p=f (v) p at selected temperatures, analytical dependences of thermal waters were derived. The obtained values ​​are described by polynomial equations. Polynomial equations enable the calculation of the experimental density values of the "Ilisu Sangar" and "Ilisu Beshbulag" thermal waters in the Gakh district at various temperatures, with a maximum error margin of ±0.25%.