The City of Tarlac is approximately 24 meters (79 ft) above the sea level on some parts but reach up to 50 meters (160 ft) on large western portions. Its total area is about 274.7 km2, composed of seventy six ( 76) barangays.
The physical terrain of the City of Tarlac is generally flat with slightly rolling to mountainous on the western part. The whole city is traversed by the Tarlac River system.
Being basically an agriculture town, a big percentage of the land is devoted to agricultural production and thus scattered in all slope ranges. Slope ranges are directly propotional to erosion potential. The lower the slope, the lower its susceptibility to erosion.