Florida spring

Sulphur Spring

Sulphur Spring is known for its clear, 72-degree water and a flow of about 1-5 million gallons per day. Set near the Hillsborough River, its 50-foot-wide basin—up to 30 feet deep—offers a historic site, now closed to swimming due to contamination, surrounded by urban parks. Accessible via Nebraska Ave (no boat needed, permit required), it’s viewable from a footbridge. Summer weekends draw visitors to nearby parks—arrive early for calm. For quiet, visit weekdays in spring (April-May) or fall (September-October), mornings ideal. Water clarity is typically clear but often clouds due to sinkhole pollution and saltwater intrusion. Check —stable, low levels around 1-2 feet ensure clarity, clearest from late fall to early spring during dry periods.