What activity is performed at the furthest point downstream of a bivouac?

The activity performed at the furthest point downstream of a bivouac is washing vehicles. This practice is critical to maintain hygiene and protect the environment from contamination. By situating the washing activity downstream, any pollutants or debris from washing vehicles are less likely to impact the main water sources utilized for drinking or other essential uses. It helps to minimize the risk of contaminating the water supply and keeps the bivouac area sanitary.

The other activities, such as disposing of waste, collecting firewood, and setting up tents, would typically be conducted in areas that are more central to the bivouac site, to maintain safety, efficiency, and comfort for the personnel. In particular, waste disposal needs to be managed carefully to prevent pollution, while collecting firewood is often done closer to where it will be used. Setting up tents also requires proximity to the main bivouac area for easier access.