^Some sources indicate that the Ab-e Istadeh lake has a seasonal outlet to the Lora River, a tributary of the Arghistan River in the Helmand basin. See Integrated Water Resources Management for the Sistan Closed Inland Delta[permanent dead link] pages 7-8
External links
Nathan Berger (May 1992). "Afghanistan Water Constraints: Overview Analysis" (PDF). Retrieved 2010-08-31. Map of Principal River Drainage Systems at page 12
Kamal, Gomal (May 10, 2004). "River basins and Watersheds of Afghanistan" (PDF). Archived from the original (PDF) on July 6, 2011. Retrieved 2010-08-31.