Orientation on rivers and lakes. Tourist tips

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Orientation on rivers and lakes. Tourist tips

Tourist tips

That navigate rivers and lakes it should be remembered that, when the forest is lowered into the river, during the flood it is thrown ashore, and when the water drops, it floats in the middle of the river - it accumulates in the water lowland.

In the daytime, in calm weather, the surface of the water over shallow places - spits, zastrugi, saddles, crests of shoals and underwater middles - is usually more even and lighter than over deep places, where it has a wavy appearance and dark color.

A natural underwater obstacle is found on the surface of the water where the water ripples. If there is not much water above the obstacle, then it overflows through it, and "soars" below. Usually over the obstacle the water is smooth.

The greater the difference in depths, the more sharply the individual places in the channel differ in color and waviness of the water surface.

At night, shallow places have a whitish tint, and deep ones are dark.

Calm-water places are places with a pronounced quiet current or stagnant water.

They usually form behind large sandbars and in backwaters.

The surface of the slug during the day and at night appears darker than the surrounding water surface, and is separated from the stream with a normal or fast flow by a strip of foam.

The water surface changes under the influence of waves formed by winds and moving ships.

On the one hand, they make it difficult to see the reflection of small details of the bottom relief on the surface, and on the other hand, in calm weather, ship waves help to detect the location of spits, sastrugi, etc.

With a strong wind in stormy weather, it is difficult to determine the nature of the bottom topography and the difference in depths.

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