Shahid Abbaspour Dam matters in the Hormuz Graph as a major Karun-basin water and hydropower asset in northern Khuzestan, where river regulation affects electricity generation, downstream agriculture, industrial water conditions, and flood-management exposure. Its role is distinct from Marun or Karkheh because it is embedded in the Karun cascade, linking upstream hydropower logic to Khuzestan’s wider energy, agriculture, and industrial economy. The asset connects power flows, water allocation, reservoir management, environmental stress, and operating risk in one of Iran’s most economically sensitive river systems.