Sturgeon date back 135 million years. They can live over 100 years and can reach 6 feet in length. It is good news that there is still a small population of state-threatened sturgeon in the Grand River. However, because of the Sixth street dam, these historic species are unable to reach a geologically unique and expansive (historic spawning) reef of exposed limestone bedrock found between the Sixth Street Dam and Ann Street.
Male sturgeon emit a low MHz ‘song’ when an ovulating female is found, attracting other males to the area. The hard bedrock allows the sound waves to travel great distances. A sturgeon restoration project completed in Wisconsin successfully attracted spawning sturgeon within two years.
Sturgeon are culturally significant to Native Americans and they are as important as the eagle. They are also an indicator of the river’s health.