14 Lakes Laguna De Bay and Lake Taal constrict maneuver south of Manila Dams Pantabangan Reservoir Rivers Three primary rivers within the AO Tributaries Numerous tributaries within the central plain, all of which are fordable Hydrology CAGAYAN RIVER AGNO RIVER ABRA RIVER PANTABANGAN RESERVOIR LAGUNA DE BAY LAKE TAAL Manila Scale: 1 : 2,500,000 Philippine Sea South China Sea