Government of India, U.T. Administration of Daman and Diu
Bounded on the north by the Kolak rivar, on the east by the Valsad district of Gujarat state, on the south by the Kalu river and on the west by the Arabian Sea, the district of Daman with a total area of 72 square km is situated in 20°21’ 55” and 20°28’ 38” north latitude and 72° 48’ 18” and 72° 54’ 16” east longitude. Its length from the extreme north to south measures 11 km and width from east to west, measure 8 km. It is about 500 km north from Goa State and the Arabian Sea frontage extends about 12.5 km. The extremities of Daman are the flanks of the two river valleys as they meet the sea. The territory is snugly ensconced between the Sayhadri ghats to the east and the Arabian Sea to the west. It is intersected by hilly spurs running down from the western ghats and number of streams.
Physiographically, Daman is a small part of the South Gujarat coastal land. Developed on the alluvial deposits brought down by the parallel flowing streams from the Pent part of the Sahyadrian hill complex, the land of Daman shows features of extensive alluvial deposition and subsequent erosion. The Damanganga river dividing the town into Moti Daman in the south and the Nani Daman in the north rises from Sahyadris and develops in this district its estuarine lands.