Lagunillas is at an altitude of about 4,250 m (13,900 ft) and it is located just northwest of Lake Saracocha.

These two lakes are part of the system drained by the Coata River, which flows in a generally easterly direction until entering westernmost Lake Titicaca, about 50 km (30 mi) from Lake Lagunillas as the crow flies.

[1][2] In 2014, the pupfish Orestias luteus made up slightly more than 70% of catches in fisheries, with the remaining being the introduced rainbow trout, a species also farmed in the lake.

[3] Lake Lagunillas is home to the unusual and relatively large "escomeli" form of the Titicaca water frog.

This Puno Region geography article is a stub.