Abstract: Afghanistan is a mountainous country which has six neighbors. Out of those six neighbors, Afghanistan share border with five of them through water. Afghanistan share border with Tajikistan through (Ammo) domain and then water of Ammo domain goes to Uzbekistan and Turkmenistan. The domain of Havirovd Marghab connects Afghanistan with Iran and Turkmenistan. Helmand River domain connects Afghanistan and Iran, and Kabul river domain connects Afghanistan with Pakistan. Helmand River is one of the abovementioned Rivers of Afghanistan, which flows (95%) inside Afghanistan and somehow it is being used. Helmand River is known as the biggest resource of water electricity in Afghanistan.