Thursday, January 26, 2012

Cavite Topography and Slope

Situated at the entrance of Manila Bay, Cavite is characterized by rolling hinterlands punctuated by hills; shoreland fronting Manila Bay at sea level; and rugged portion at the boundary of Batangas where Dos Picos mountains are located. The province has two principal rivers and two mountains.

Cavite is divided into four physiographical areas, namely: the lowest lowland area, lowland area, the central hilly area and the upland mountainous area.

The lowest lowland area is the coastal plain in particular. These areas have extremely low ground level of EL. 0m to EL. 2m compared to the high tide level of about EL. 0.8m from the Mean Sea Level (MSL). These are the city of Cavite City and the municipalities of Bacoor, Kawit, Noveleta, Rosario, northern part of Carmona and eastern part of Ternate.

The lowland area consists of the coastal and alluvial plains. These areas have flat ground slope of less than 0.5% and low ground elevation of EL. 2m to EL. 30m. The alluvial plain can be found in the municipality of Imus and southern part of General Trias. Into these municipalities forms the transition area between the coastal plain and the central hilly area. It also covers some areas of Bacoor, Kawit, Noveleta, Rosario, Tanza and Carmona.

The third topography type is the central hilly area, generally found on the mountain foot slope. It forms the rolling tuffaceous plateau. This topography includes steep hills, ridges and elevated inland valley. The plateau is characterized with ground elevation ranging from 30m to nearly 400m. Its ground slope ranges from 0.5 to 2%. The city of Trece Martires and DasmariƱas and the municipalities of General Emilio Aguinaldo, General Mariano Alvarez, Indang, Maragondon, Ternate, Silang and Carmona have this kind of topography.

The last topography type is upland mountainous area, found in Magallanes, Amadeo, Tagaytay City, Mendez, Alfonso, southern part of Maragondon and Carmona. They are situated at a very high elevation above EL. 400m with slopes of more than 2%. The Tagaytay ridge has a peak elevation of 650m.

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