PaperBand-e-Darreh Birjand South Khorasan hydraulicIranian Arch · 2019 · South Khorasan0Why it matters: Birjand damPlacesThe place this coversBand-e Darreh South Extension Dam (Birjand Darreh South Gravity Dam)🇮🇷 Iran · South Khorasan Province, Birjand County, Band-e Darreh gorge south branch (Bagh-e Sarhangi south) · Hydraulic works