topography (pronounced: ta PAH gra fi)

the physical features of an area of land, especially the position of its rivers, mountains, etc; the study of these features ภูมิประเทศ

After Lat Phrao, floodwater was expected to flow to Ratchadapisek Road and the wider Chatuchak area as the topography map shows that the two areas sit on low-lying zones, said Seri Supparathit, a Rangsit University expert on natural disasters.

The mainstream dams have relatively small reservoirs because the topography limits the height of the dam to 30 to 40m above the river bed.

Who knows best about local topography and local needs than the locals themselves?