Friends of the Seven Lakes Foundation

San Pablo City, Philippines


Backgrounder

San Pablo City is a chartered city in the province of Laguna, only 70 kilometers from Metro Manila.  It is most famous for its seven lakes - Sampaloc Lake, Bunot Lake, Mojicap Lake, Pandin Lake, Palakpakin Lake, Yambo Lake and  Kalibato Lake.  All seven lakes are interconnected by underground tunnels.  These are freshwater lakes, which has been known for the tasty grilled or smoked local fish delicacy called tilapia, as shown in this picture.

Many years ago, families swam in their clear waters and held picnics on the lakeshore, while others held boat races on the lake.  Joggers ran safely around the perimeter road enjoying the fresh morning air.  But years of neglect led to the deterioration of these beautiful lakes. In the 1980s and 90s, illegal structures sprouted along the lakeshore and fishcages mushroomed on the lake covering as much as 70% of the surface area.  The remaining area was filled with waterlilies, so much so that some areas looked like fields of grass from a distance.

above:  tilapia caught at Palakpakin Lake

left: trash along the lakeshore

right: a house built by illegitimate lakedwellers at Sampaloc Lake

 

 

 

This sad condition of Sampaloc Lake has improved a little since the removal of some illegal structures like restaurants, nightclubs and shanties.  Still many more structures line the shores with no provision for proper sewage disposal.  In addition, fishcages still occupy more than 40% compared to the allowable 10% of the surface area set by law.  The sad part of it all is that majority of the big fishcages owners are not even our own local fisherfolks and, therefore, have little regard for the welfare of our community.  The supposed moratorium setforth by Laguna Lake Development Authority (LLDA) for the renovation and establishment of new fishcages is obviously not being enforced as the numbers of new or renovated fishcages are beginning to rise up again.  What is worse is that the new cages have makeshift huts built on them, almost the size of a small house.  All these illegal developments  will again contribute to the degradation of our lake to the point of killing aquatic life.  This is evidenced by the occasional fishkills and the overgrowth of waterlilies, which are directly related to the pollution level of the water.    

 

 

 

left:  a field of waterlilies

right: what's left of a two-storey house by the lake.                   

 

                                                            

Vision-Mission-Strategies

THE VISION

 

FSLF, Inc. envisions a healthy and beneficial seven lakes of San Pablo City where empowered communities enjoy the fruits of sustainable management of the natural lake environment and where social justice prevails.

  

THE MISSION  

 

FSLF, Inc. is an environmentalist advocacy group that promotes conservation, protection and rehabilitation of the seven lakes of San Pablo City; coordinates and supports initiatives for the sustainable management of the seven lakes; and educates communities around the lakes on ecologically sustainable practices.

 

Strategies:

1.     Resource Center Development-Scientific Research and Documentation

2.     Network Building

3.     Information/Education Campaigns;

4.     Consensus Building and Policy Advocacy;

5.     Public-private partnerships;

6.     Collaboration with environmental public servants, academe and civil society groups

7.     Promotion of Eco-tourism

Information on the Seven Lakes

San Pablo City has seven freshwater lakes.  These lakes (with area in sq.km.) are Sampaloc Lake (1.04); Palakpakin (0.43); Calibato (0.42); Bunot (0.35); Yambo (0.28); Pandin (0.20   ) and Mohicap (0.14).  Its catchment area is Mt. San Cristobal with an area of 27.5 sq.km.

 

   Lake                 Elevation          Water Depth                 Area                   Remarks  

                            (meter, asl)            (meter)             (hectares)  

Mohicap                  80 +                 No data                14.5             Source of tilapia

Yambo                   160 +                 No data                28.5            For recreation, oligotrophic

Pandin                    160 +                 63.0  max             20.5            Source of tilapia, oligotrophic

Palakpakin             100 +                   7.5  max             43.0            Source of tilapia, silted / polluted

Calibato                 170 +                135.0 max              42.0           Source of tilapia, silted /polluted

Bunot                     110 +                  23.0  max             30.5           Source of tilapia , silted

Sampaloc               106                      27.0 max           104.0           Source of tilapia, polluted in parts

 

In 1975-76, salinity in Sampaloc Lake was reported to average 42 ppm.  Latest measurements in 2004 show a salinity range from 100 to 200 ppm.

 

The seven freshwater lakes of San Pablo City were formed by a unique process called phreatic eruption where shallow lava from Mt. San Cristobal intersected groundwater which blew out (stream-heated eruption) the overlying rocks to form a circular and  crater-like depression that eventually filled-up with rainwater. The varying depths of these lakes from 27 meter to 135 meters suggest a volcanic origin.

 

These lakes occur along the paths of migratory birds from the north (China and Japan) and act as important resting grounds for them during the onset of winter. The Lakes are extremely threatened by human influence (illegal squatting along the shores and its resulting pollution) and activities (illegal fish-pens, overfeeding and crowding fish cages) and proposed infrastructures near the lake for commercial purposes.

 

The legal regulations are not enforced by the local government, and/or there is a lack of law enforcement on the lakes where crimes against persons and property are committed.      

 

Ramon B. San Andres
Consulting Geologist-Geophysicist-Environmentalist
Friends of the Seven Lakes Foundation, Inc.

 

 

Available Documents/Studies:

 

Sampaloc Lake Action Plan (2000) - A MENRM Term Paper submitted to University of the Philippines (UP) Open University, Los Banos, which contains physical description of the lake, water analysis and social isues about the lakes (pollution, lack of law enforcement, etc).
 
State of Water Resources in San Pablo City (7/19/2001) - Unpublished technical manuscript written regarding the critical geohydrological, social and political issues on the water resources of San Pablo and the causes of water shortages in the city, due to watershed degradation and mismanagement by the local water district. 
 
(Hydrological) Evaluation of Water Resources in SPC (6/24/2005) - A short communication manuscript on the hydrological analysis of San Pablo to address water shortages in the city.
 
Evaluation of Open Dumpsite, SPC (7/4/2005) - A short communication manuscript regarding the environmental impact of the open dumpsites to groundwater resources of San Pablo City.

Create a free website at Webs.com