Tampa, Florida Environment Guide

Tampa has ten environment guides, and the table below pairs the question each one answers with a sourced fact about Tampa Bay or the Hillsborough River where an official source gives one.

The Hillsborough River appears in three Tampa guides for a reason: the river is the city water source, the dam holds the city reservoir, and the bypass canal moves its floodwater to McKay Bay. Read the Hillsborough River guide for the river itself and the dam guide for the reservoir and drought measures.

Tampa has been under a Modified Phase III (Extreme) water shortage since April 3, 2026, which limits lawn watering inside city limits to one day a week and only from 12am to 4am or 8pm to 11:59pm (City of Tampa water use restrictions).

Tampa water use restrictions have been enforced year-round since 1992, and the once-a-week day depends on the last digit of the house number (City of Tampa). The schedule applies to Tampa lawns watered with city water or well water. Reclaimed water is generally exempt, but it may not be used wastefully.

Hand watering and microirrigation of Tampa shrubs, palms and flower beds is allowed once on any day but not between 8am and 6pm, and a sprinkler test may run no more than 10 minutes per zone once a week (City of Tampa). Citations are issued on first observance, and a violation in Tampa can bring a fine of up to $500 and a mandatory court appearance. During the shortage, no homeowner association may penalize a Tampa resident who follows the schedule for dry-looking turfgrass.

Two practical points for Tampa yards: the City of Tampa Fertilizer Ordinance bans lawn fertilizer containing nitrogen or phosphorus from June 1 to September 30, and an irrigation timer that resets after a power outage can earn a citation for watering on the wrong day (City of Tampa). The page was last updated July 22, 2026 and still shows Phase III. Last verified: October 14, 2026, on the City of Tampa water use restrictions page.

The Southwest Florida Water Management District found modest seagrass gains in Tampa Bay in its 2024 mapping, the first increase in the bay since 2016 (SWFWMD).

District scientists map seagrass to take the pulse of estuaries such as Tampa Bay. The District maps the Suncoast, from Tampa Bay south to Charlotte Harbor, every two years from aerial imagery flown at about 8,000 feet, and has mapped seagrass along this coast since 1988 (SWFWMD). The District said the 2024 gains could mark the beginning of a recovery since the red tide of 2017 to 2019.

A caution on the Tampa Bay numbers: the 2024 maps come from imagery collected in early 2024, so they show the bay before the 2024 hurricane season (SWFWMD). The next Suncoast mapping is scheduled for 2026, and its results will be the first District seagrass map of Tampa Bay made after that season.

Hillsborough County's Environmental Protection Commission samples water in between the maps. Its Water Quality Monitoring Program covers over 250 surface water stations in Tampa Bay, its rivers and tributaries and Lake Thonotosassa, and its staff help collect data for the annual Tampa Bay seagrass survey (EPC Water Division). The EPC office is at 3629 Queen Palm Dr., Tampa, phone 813.627.2600. The Tampa water quality guide and the Tampa Bay watershed guide cover nitrogen limits and restoration.

The Tampa Bypass Canal System, built by the Southwest Florida Water Management District after Hurricane Donna flooded Tampa in 1960, diverts Hillsborough River floodwater around Tampa and Temple Terrace into McKay Bay (SWFWMD).

The system has three parts. The Hillsborough Flood Detention Reservoir covers 16,000 acres northeast of Tampa and Temple Terrace behind a 6.5-mile earthen dam, and it stays empty until high water (SWFWMD Tampa Bypass Canal System). From there the Tampa Bypass Canal runs about 15.7 miles parallel to the Hillsborough River and empties into McKay Bay, with water control structures along the way, and the Harney Canal is the third part of the system.

Inside the city, Tampa handles street flooding with its own projects. Major stormwater improvements are underway along Manhattan Avenue, and the MacDill 48 project, completed in 2024, combines flood mitigation with public green space, Mayor Jane Castor said in her May 5, 2026 State of the City address (City of Tampa). The Tampa Bypass Canal guide covers the canal history and its recreation uses, and the sea level rise in Tampa guide covers tide records and the city plans for higher water.

Cockroach Bay Aquatic Preserve, a 4,871-acre state preserve on the eastern side of Tampa Bay established in 1976, and the eight county artificial reefs built in Tampa Bay since 1986 are two of the most accessible places (Florida DEP; EPC).

Cockroach Bay takes in open bay, tidal creeks, a blackwater stream and alluvial islands, and the Florida Department of Environmental Protection lists no facilities and no set hours for the preserve itself (Florida DEP). Boats reach it from the Cockroach Bay Road boat ramp, from the E.G. Simmons Park ramp to the north, or from the smaller Domino ramp south of Ruskin, which has limiting shallow depths. DEP warns that local knowledge matters outside marked channels because the water is extremely shallow.

In Tampa Bay, the Environmental Protection Commission has deployed over 50,000 tons of material across eight reefs since 1986 to add hard-bottom habitat and fishing spots in Tampa Bay (EPC Artificial Reef Program). The EPC publishes reef locations in decimal degrees and invites anglers to report catches online. The Tampa Bay artificial reefs guide lists each reef, and the McKay Bay guide covers the nature park on the bay where the bypass canal ends.

Tampa is putting much of its water spending through the $3 billion PIPES program, approved in 2019, which by May 2026 had replaced more than 78 miles of aging water lines and rehabilitated over 200 wastewater pipes (City of Tampa, State of the City).

Hundreds of millions of dollars of PIPES upgrades are underway at the David L. Tippin Water Treatment Plant, which the city says is now celebrating 100 years; the city plant treats the Hillsborough River water that supplies Tampa and parts of unincorporated Hillsborough County (City of Tampa; City of Tampa Water Department). Wastewater pump station upgrades across Tampa are meant to strengthen system reliability and prevent overflows.

The same May 2026 Tampa address framed the city as facing a record drought and increasing climate pressures, which is why water supply and flooding sit side by side in the Tampa environment section (City of Tampa). Tampa residents with a high water bill can call Water Conservation and Efficiency at (813) 274-8121, option 5, for help reducing use (City of Tampa).