Geography thumb|left|Map of Grand Prairie Township - 1914 thumb|left|Homestead Certificate for Grand Prairie Township signed by President Chester Arthur According to the United States Census Bureau, the township has a total area of , all land. The main geographic features of Grand Prairie Township include the numerous branches of the Norwegian Creek that extend throughout much of the township. The main branch of the Kanaranzi Creek also flows through the northwest corner Grand Prairie Township.
Geography thumb|left|Map of Grand Prairie Township - 1914 thumb|left|Homestead Certificate for Grand Prairie Township signed by President Chester Arthur According to the United States Census Bureau, the township has a total area of , all land. The main geographic features of Grand Prairie Township include the numerous branches of the Norwegian Creek that extend throughout much of the township. The main branch of the Kanaranzi Creek also flows through the northwest corner Grand Prairie Township.