The Alafia River is 25 miles (40.2 km) long, with a watershed

Drainage basin

A drainage basin is an extent or an area of land where surface water from rain and melting snow or ice converges to a single point, usually the exit of the basin, where the waters join another waterbody, such as a river, lake, reservoir, estuary, wetland, sea, or ocean...

 of 335 square miles (867.6 km²) in Hillsborough County

Hillsborough County, Florida

As of the census of 2000, there were 998,948 people, 391,357 households, and 255,164 families residing in the county. The population density was 951 people per square mile . There were 425,962 housing units at an average density of 405 per square mile...

 flowing into Tampa Bay

Tampa Bay

Tampa Bay is a large natural harbor and estuary along the Gulf of Mexico on the west central coast of Florida, comprising Hillsborough Bay, Old Tampa Bay, Middle Tampa Bay, and Lower Tampa Bay."Tampa Bay" is not the name of any municipality...

. The watershed contains ten named lakes and ponds, and 29 named river

River

A river is a natural watercourse, usually freshwater, flowing towards an ocean, a lake, a sea, or another river. In a few cases, a river simply flows into the ground or dries up completely before reaching another body of water. Small rivers may also be called by several other names, including...

s, stream

Stream

A stream is a body of water with a current, confined within a bed and stream banks. Depending on its locale or certain characteristics, a stream may be referred to as a branch, brook, beck, burn, creek, "crick", gill , kill, lick, rill, river, syke, bayou, rivulet, streamage, wash, run or...

s and canal

Canal

Canals are man-made channels for water. There are two types of canal:#Waterways: navigable transportation canals used for carrying ships and boats shipping goods and conveying people, further subdivided into two kinds:...

s. During the rainy season, excess water is pumped to the new C.W. Bill Young Regional Reservoir, which opened in 2005.

For centuries the Alafia was home to the Tocobaga

Tocobaga

Tocobaga was the name of a chiefdom, its chief and its principal town during the 16th century in the area of Tampa Bay. The town was at the northern end of what is now called Old Tampa Bay, an arm of Tampa Bay that extends northward between the present-day city of Tampa and Pinellas County...

 Indians. From their settlement at the mouth of the river to their hunting camps upstream, the Indians left traces of their lives and activities.

In the sixteenth century, the expeditions of Pánfilo de Narváez

Pánfilo de Narváez

Pánfilo de Narváez was a Spanish conqueror and soldier in the Americas. He is most remembered as the leader of two expeditions, one to Mexico in 1520 to oppose Hernán Cortés, and the disastrous Narváez expedition to Florida in 1527....

 and Hernando de Soto

Hernando de Soto (explorer)

Hernando de Soto was a Spanish explorer and conquistador who, while leading the first European expedition deep into the territory of the modern-day United States, was the first European documented to have crossed the Mississippi River....

 explored the coastal areas of Tampa Bay

Tampa Bay

Tampa Bay is a large natural harbor and estuary along the Gulf of Mexico on the west central coast of Florida, comprising Hillsborough Bay, Old Tampa Bay, Middle Tampa Bay, and Lower Tampa Bay."Tampa Bay" is not the name of any municipality...

 and visited the Indians, making the first written account and charting the first maps of the Alafia River. On an early map the name 'Alafia' does not appear, but rather the translation, Hunting River.

Part of the river exists within the confines of the Alafia River State Park

Alafia River State Park

Alafia River State Park is a Florida State Park, located in Hillsborough County in central Florida, 10 miles southeast of Tampa on County Road 39.-Recreational Activities:...

.