Seven Lakes of San Pablo
[2] In a recent rocks and sediment analysis or petrographic study on the lakes and adjoining rivers in San Pablo, sulfate concentrations were considerably higher than the naturally occurring sulfates from volcanism.Samples were taken from other areas underlain with similar volcanic rocks from the old eruptions (e.g. Taal volcano) like Indang, in the province of Cavite and the La Mesa Watershed, the water supply reservoir for Metropolitan Manila.The analyses indicated that the elevated level of sulfates were not related to volcanism but anthropogenic or man-made, and among the causes are sewage, fertilizers, herbicides, pesticides etc.The Rotarians were aiming for economic, environmental and health benefits of the trails to the community.[7] Various ecological conservation efforts by both government and non-government organizations, like the Friends of the Seven Lakes Foundation, had been implemented in recent years.
Filipinovolcanic crater lakesSan PabloprovinceLagunaPhilippinesLake SampalocLake BunotLake CalibatoYambo and PandinLake PalakpakinLake MuhikapSampalokvolcanic cratersSan Pablo Volcanic Fieldvolcanoesrift zoneMount MakilingMount BanahawSouthwestern LuzonVolcanic Fieldphreatomagmatic eruptionspetrographicsulfateTaal volcanoIndangCaviteLa Mesa WatershedreservoirMetropolitan ManilaanthropogenicsewagefertilizersherbicidespesticidesRotary Clubillegal settlementsfish killsecological conservationWayback MachineLakes of the PhilippinesLaguna de BayMainitNaujanBuluanAguingayAlligatorBalananBalinsasayaoBulusanCalibatoDanao (Cebu)Danao (Leyte)Danao (Negros)KayanganLeonardManguaoMapanuepeMaughanMuhikapNapalitPalakpakinPandin and YamboPinamaloyPinatuboSampalocTaal Main CraterVenadoAmbuklaoCalirayaLa MesaPantabanganPulangi IVCanlubang Industrial ZoneMakiling Forest ReserveNature and Science City of Los BañosPagsanjan Falls (Cavinti)Lake CalirayaMount SembranoLaguna CalderaCaliraya DamUniversity of the Philippines Los BañosInternational Rice Research InstituteNagcarlan Underground CemeteryEnchanted KingdomVilla Escudero PlantationsRizal MonumentRizal ShrineCalabarzonBatangasQuezonAlibijabanAnilaoBalesinCagbaleteCalamba IslandFortune IslandLaiya BeachMatabungkayPunta FuegoVerde IslandCasa Santa MuseumCoconut FestivalHigantes FestivalPuzzle MansionSky RanchVilla EscuderoAguinaldo ShrineAngono PetroglyphsBonifacio Trial HouseCape Santiago LighthouseCorregidorCorregidor Island LighthouseMalabrigo Point LighthouseMalagonlong BridgeMalinta TunnelPagsanjan ArchSanta Rosa ArchTejeros Convention SiteAvilon ZooHinulugang TaktakMasungi GeoreserveMount BatulaoMount MacolodMounts Banahaw–San Cristobal Protected LandscapeMounts Palay-Palay–Mataas-na-Gulod Protected Landscape