**Explanation:**

A flow net is a graphical representation of the flow of water through a porous medium, such as soil or rock. It consists of a series of flow lines and equipotential lines that are drawn to represent the flow patterns and pressure distribution in the medium.

The purpose of a flow net is to provide a visual representation of the seepage and pressure distribution in a porous medium. It can be used to determine several important parameters related to seepage and fluid flow, including:

**1. Determination of Seepage:**
A flow net can be used to determine the direction and magnitude of seepage through the porous medium. By analyzing the flow lines in the flow net, engineers can understand how water is moving through the medium and identify areas of high seepage or potential seepage paths.

**2. Determination of Seepage Pressure:**
The flow net can also be used to determine the seepage pressure distribution in the porous medium. The equipotential lines in the flow net represent lines of constant pressure, and by analyzing these lines, engineers can determine the seepage pressure at different points in the medium.

**3. Determination of Hydrostatic Pressure:**
The flow net can also provide information about the hydrostatic pressure distribution in the porous medium. The hydrostatic pressure is the pressure exerted by a fluid due to its weight and is a function of the elevation of the fluid. By analyzing the equipotential lines in the flow net, engineers can determine the hydrostatic pressure distribution in the medium.

**4. Determination of Flow Paths:**
In addition to seepage and pressure distribution, a flow net can also help determine the flow paths of the water through the porous medium. By analyzing the flow lines in the flow net, engineers can identify the paths that the water takes as it flows through the medium, which is crucial for understanding the behavior of the water and designing appropriate engineering measures.

In summary, a flow net can be used for the determination of seepage, seepage pressure, hydrostatic pressure, and flow paths in a porous medium. It is an important tool in geotechnical engineering for analyzing and designing structures that interact with water, such as retaining walls, dams, and foundations.