WATERSHEDS

There are three watersheds in Spain:

- The Atlantic watershed carries water from the rivers which flow into the Atlantic Ocean. The Galician rivers are short with high flows due to abundant rain. The plateau rivers are long with high flows too. However, the flows are lower in the summer when there is little rainfall. Atlantic rivers in Andalusia are long with irregular flows.

- The Cantabrian watershed carries water from the rivers which flow into the Cantabrian Sea. It has short rivers. Their flow is abundant and regular because they go through areas with ample rainfall.

- The Mediterranean watershed carries water from the rivers which flow into the Mediterranean Sea. It occupies a third of Spain. It does not have many rivers. They are short with low, irregular flows.