Pronunciation: [nˈa͡ɪz] (IPA) 
The word "GNIS" is spelled with a silent "g" and is pronounced as /nɪs/. The acronym stands for Geographic Names Information System, a database of place names in the United States maintained by the USGS. Despite the unusual spelling, the word is pronounced simply as "nis" without any sound for the "g." People often mistakenly add a "g" sound or spell it as "G-N-I-S," but the correct spelling is simply "GNIS."
The Geographic Names Information System (GNIS) is a comprehensive database and resource managed by the United States Geological Survey (USGS) that contains information on a broad range of geographic names across the United States and its territories. GNIS serves as an authoritative and standardized reference for the proper identification, spelling, location, and attributes of geographic features, including cities, towns, counties, mountains, lakes, rivers, and other natural and man-made landmarks.
Covering both populated places and physical features, GNIS provides detailed information such as the geographic coordinates, elevation, variant names, historical and cultural significance, and other pertinent details associated with each listed feature. It also includes administrative divisions and boundaries, like states, counties, and townships. With its extensive coverage and accessibility, GNIS is a valuable tool for various purposes, including cartography, geology, urban planning, emergency response, environmental analysis, and academic research.
The GNIS system is continuously updated by a team of geospatial experts and relies on a wide range of authoritative sources such as local government records, historical documents, and geographic surveys. The information within GNIS can be accessed through various means, including the official online portal provided by the USGS, as well as through data downloads and APIs, ensuring widespread availability and usability of the collected data. Overall, GNIS plays a crucial role in maintaining a standardized, accurate, and up-to-date repository of geographic names, contributing to the consistency and efficiency of geographic referencing and analysis across the United States.
