View of High Island Reservoir showing the inner west cofferdam with service road immediately behind linking High Island (right) with the mainland plant and casting yards, 20 July 1973.圖中可見水塘西面的內圍堰，圍堰後是把糧船灣（圖右）及大陸的水廠和鑄模場連接起來的道路，攝於1973年7月20日。