Западная Двина
Daugavpils District was situated in the geographical region of East-Latvian Lowland, Latgale Upland and Augšzeme Upland. The highest points above sea level were Egļukalns (220.1 m), Piķeļnieku kalns (206 m), Lediņu kalns (202 m) and Skrudalienas kalns (201 m). Almost all of the territory was located in the Daugava River basin. Besides the Daugava River there were many large and small rivers.