Hillsborough River State Park rangers Mike Evans and Brian Polk could not bear it anymore. For three weeks in February of 1981 they watched hundreds of dead fish float underneath the live oak-canopied Hillsborough River waters of their wilderness park, their bloated carcasses bobbing in the water and putrefying the air. Now, determined to find the cause of the slaughter, they boarded a canoe and paddled into Blackwater Creek, a Hillsborough River tributary. They did not make it far.
"Tampa's Multi-Purposed Waterway: An Environmental History of the Hillsborough River, 1950-1980,"
Florida Historical Quarterly: Vol. 97:
2, Article 4.
Available at: https://stars.library.ucf.edu/fhq/vol97/iss2/4