Moving rivers of ice.

Hollow area of land which is filled with water

Natural stream of water which flows in a channel towards a mouth or lake or another river

Small waterfalls

In the upper course, rivers are narrow and flows very quickly.

Is a bend in a river. Normally occur in the middle an lower courses where the water is moving more slowly.

Transition zone between sea water and land.

A shallow body of water separated from a sea by sandbars or coral reefs.

Place where the river flows into the sea or a lake.

The river drops its sediment and mud across the mouth of the river. Is triangular in shape.

Area of a river where seawater go inside the river course and mixes with freshwater.

When most of the water discharge by the river came from snow.

When most of the river's water came from rain.

Part of land drained by a river and its tributaries.

Distance between its source and mouth.

Amount of water that the river transports.

It has the gentlest slopes and can extend to the mouth of the river.

This is the highest section of a river, which is found in the mountains or hills.

This part of the river course is less steep and can have meanders.

Pockets of subterranean water