term,name,definition,category,provenance,provenance_uri,note topographicWetnessIndex,Topographic Wetness Index (TWI),"Topographic wetness index (TWI), also known as the compound topographic index (CTI), is a steady state wetness index. It is commonly used to quantify topographic control on hydrological processes.",,Wikipedia,https://en.wikipedia.org/wiki/Topographic_wetness_index,Added to support Critical Zone Observatory (CZO) data use cases.