Lumot Lake, also known as Sierra Lake, is a man-made water reservoir located in the towns

Municipalities of the Philippines

A municipality is a local government unit in the Philippines. Municipalities are also called towns . They are distinct from cities, which are a different category of local government unit...

 of Cavinti

Cavinti, Laguna

Cavinti is a 4th class municipality in the province of Laguna, Philippines. It is situated in the foothills of Sierra Madre mountain range, and part of the 4th congressional district of Laguna...

 and Lumban

Lumban, Laguna

Lumban is a 3rd class municipality in the province of Laguna, Philippines. According to the latest census, it has a population of 28,443 people in 5,456 households. Lumban has an area of 96.08 square kilometers, the fourth largest in Laguna...

, province

Provinces of the Philippines

The Provinces of the Philippines are the primary political and administrative divisions of the Philippines. There are 80 provinces at present, further subdivided into component cities and municipalities. The National Capital Region, as well as independent cities, are autonomous from any provincial...

 of Laguna, in the Sierra Madre Mountains

Sierra Madre (Philippines)

The Sierra Madre is a mountain range in The Philippines. It is located along the north-eastern coast of Luzon Island, running north/south. Quezon National Forest Park is situated in the range.-Geography:...

 of the Philippines

Philippines

The Philippines , officially known as the Republic of the Philippines , is a country in Southeast Asia in the western Pacific Ocean. To its north across the Luzon Strait lies Taiwan. West across the South China Sea sits Vietnam...

. The lake was created when Lumot Dam

Lumot Dam

Lumot Dam is an embankment dam located between the towns of Cavinti and Lumban, in the province of Laguna, Philippines. The dam was constructed across Lumot River creating a reservoir now known as Lumot Lake or Sierra Lake...

, an embankment dam

Embankment dam

An embankment dam is a massive artificial water barrier. It is typically created by the emplacement and compaction of a complex semi-plastic mound of various compositions of soil, sand, clay and/or rock. It has a semi-permanent waterproof natural covering for its surface, and a dense, waterproof...

, was constructed damming the Lumot River, creating an auxiliary water reservoir for Lake Caliraya

Lake Caliraya

Lake Caliraya is a man-made lake situated in the municipalities of Lumban, Cavinti, and Kalayaan in Laguna province, Philippines.-Creation of the dam:...

 as part of the Kalayaan Pumped-Storage Hydroelectric Plant. The waters between the two lakes are conveyed by a 2.3 kilometres (1.4 mi) penstock

Penstock

A penstock is a sluice or gate or intake structure that controls water flow, or an enclosed pipe that delivers water to hydraulic turbines and sewerage systems. It is a term that has been inherited from the technology of wooden watermills....

.

Lumot Lake is less developed that the bigger Lake Caliraya but both lakes are popular spots for water sports and largemouth bass

Largemouth bass

The largemouth bass is a species of black bass in the sunfish family native to North America . It is also known as widemouth bass, bigmouth, black bass, bucketmouth, Potter's fish, Florida bass, Florida largemouth, green bass, green trout, linesides, Oswego bass, southern largemouth...

fishing.