Comparing an earlier satellite photograph of Joutzungchiao with a current one, Tsai Chia-yang notes, "Before they built that breakwater, this expanse was a wet tidal flat. After it was built, both its southern and northern sides were exposed to the air, and tidal water could not enter. It gradually dried up.
蔡嘉揚對照當年的衛星照片和肉粽角的現場照片指出，「尚未築堤時，這塊灘地原本是一片濕潤的潮間帶，」之後突堤南北側灘地裸露，無法被潮水浸潤而逐漸乾枯。