Rivers and lakes of Iran

Flowing into the 

The Karun-3 dam, one of the many large power dams on the Karun River

Mehran river Kookherd Hormozgān

• Shatt al-Arab
  • Haffar, originally an artificial channel now forming the estuary of the Karun
  • Karun River
    • Marun River
    • Dez River
      • Koohrang
  • Tigris (Iraq)
    • Karkheh River
      • Seimareh River
    • Chankula River
    • Sirwan River (Diyala River)
      • Alwand River
    • Little Zab
• Bahmanshir, the original mouth of the Karun
• Jarahi
• Zohreh River
• Helleh
• Mand River
  • Shur River
• Mehran River
• Kul River
  • Gowdeh River
  • Rostam River

Flowing into the Gulf of Oman

• Dozdan River
• Jagin River
• Gabrik River
• Bahu Kalat River (or Dashtiari River or Silup River)

Flowing into endorheic basins

Lake Urmia

• Aji Chay
  • Quri Chay
• Zarriné-Rūd
• Gadar River
• Ghaie River
• Alamlou River
• Leylan River
• Simineh River
• Mahabad River
• Barandouz River
• Shahar River
• Nazlou River
• Rozeh River
• Zola River

Caspian Sea

• Kura River (Azerbaijan)
  • Aras River
    • Balha River
      • Tulun River
    • Zangmar River
      • Barun River
• Sefīd-Rūd
  • Qizil Uzun
  • Shahrood
    • Alamut River
• Do Hezar River
  • Se Hazar River
• Chaloos River
  • Sardab River
• Kojoor River
• Haraz River
  • Noor River
  • Lar River
• Atrek River
  • Sumbar River

Namak Lake

• Abhar River
• Qom River
• Jajrood River
• Karaj River

Gavkhouni

• Zayande River

Hamun-e Jaz Murian

• Halil River
• Bampur River

Sistan Basin

The Kajaki Dam on the Helmand River provides flood control, power and irrigation water to the Helmand Valley. Without the dam, the surrounding region would be arid and would not be able to produce crops.

• Helmand River

Hamun-i-Mashkel

• Mashkid River (Mashkel River)

Karakum Desert[edit source 

• Harirud
  • Kashaf River