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A 90-foot deep sinkhole closes Hillsborough park and fixing it will be complicated

A popular Hillsborough County park was closed indefinitely Wednesday after engineers discovered a sinkhole 90 feet deep and 6 feet wide.

The land for Lake Park, at 17302 N Dale Mabry Highway, is owned by the city of St. Petersburg, which leased it to Hillsborough County. The region's water utility, Tampa Bay Water, has five active well fields in the park, which are used to pump groundwater to satisfy the bay area's water needs.

All that has made fixing the sinkhole and reopening Lake Park a complicated proposition. The question now is: Who's going to fix it?

Hillsborough County Administrator Mike Merrill discussed the "significantly deep chasm" at Wednesday morning's commission meeting. He said the park had to be closed entirely until the county deems it safe to reopen. "The park, the land, is actually owned by St. Pete," he said. "I believe, as the landowner, they would be the ones to pay for the remediation, which will be significant."

"We're still gathering information and we have folks going out there to check it out more," said Ben Kirby, St. Petersburg Mayor Rick Kriseman's spokesman.

Warren Hogg, the water use permitting manager for Tampa Bay Water, said the utility acquired the well fields from St. Petersburg in 1998. The wells pump water from 700 feet below ground, he said, and had been off since mid July during the usual summer hiatus.

Tampa Bay Water resumed pumping Tuesday, Hogg said, but the utility does not believe that contributed to the formation of the sinkhole.