**5. Description of the lower section of the hydrogeomorphological chart of the Lluta river**

The lower section of the Lluta river basin is a reflection of the normal process of the dynamics of a fluvial course since it is here where the processes activated with force and by the effect of gravity settle in the upper section, continuing in the middle section, and culminating in the lower or lower section of the river.

Each number of this section described in **Figure 18** corresponds to the following:


#### **Figure 18.**

*Representation of the hydrogeomorphological chart of the Lluta river (lower section). (Source, Author's own).*

In this section of the river, a high infiltration ability predominates (filling unconsolidated deposits), around which there is a permanent watercourse, as shown in **Figure 2** to next to the riverbed. In the lower section of the river and in the bed itself, there is a medium infiltration capacity ability.

Slope processes, such as linear erosion, slip niches, and creep, are activated to a lesser extent in the upper and middle reaches of the river, since here the materials that were dragged in the processes activated upstream have been deposited.

A lithological control is predominant toward the right bank of the river, where at the same time there is a depositional margin, and where at the same time the creep slope process is activated as shown in **Figure 19**.

The vegetation and bofedales in the lower section of the river are scarce, and the deposit of material dragged by gravity from the upper section predominates. In addition, facilities and equipment by human actions predominate in this area.

#### **Figure 19.**

*Lithological control toward the left bank of the Lluta river, which shows that toward the right bank where a fluvial terrace has formed, there are creep processes. At the same time, on the right bank over said control, there are landslide niches.*
