Granada lake is connected to the Atlantic Ocean though Rio San Juan, a navigable river; on the other side its shores are only 12.5 mile far from the Pacific Ocean.
The most important period for Cocibolca lake was the gold race age. People leaving from the east regions of the United States arrived on Nicaragua’s coasts, streaming up the San Juan River catching up the lake. Then crossed the strip of land that divides the Cocibolca from the Pacific Ocean where a boat was waiting with destination California.
In the Cocibolca lake you can find the largest lacustrine island in the world, Ometepe Island.
Los Guatusos lacustrine National
Park is closed to the Costa Rica borders and people can visit it on small boats.