During the Qing Dynasty, boats could navigate by river from Black Rock Harbor into the residential section of Tou-cheng, and from there on to Yi-lan City and even Yuan-shan Lake. Black Rock Harbor was thus the economic lifeline and the secur-ity lynchpin for the entire Yi-lan area.
清朝年間，河運可由烏石港直達今日頭城老街的盧家大宅、十三行口，進而上達宜蘭城，甚至進入員山大湖，掌控著整個宜蘭地區的經濟命脈與區域安全。