Gomti River
Hardoi is the westernmost district of Awadh. Its eastern border is formed by the Gomti River, which separates it from Sitapur and Lakhimpur Kheri districts. To the south, it borders Lucknow and Unnao districts. On the west, its border is formed partly by the Sendha river until it joins the Ramganga, and then the district border cuts south to the Ganges, which then forms the western boundary the rest of the way.