Search Content
Displaying results 1 - 20 of 172
Rainbow Springs is known for its outstanding water clarity and is popular for swimming and paddling. About the SpringsThe Rainbow River is a first-magnitude spring system originating in Marion County. Rainbow Springs is the headwaters of this short, freshwater river flowing nearly 6 miles from the… Read more
Highlights
- Home to the fourth largest spring in the state of Florida, Rainbow Springs
- Discharges an average of 493 million gallons of water per day into the Withlacoochee River
- Designated an Outstanding Florida Water and an Aquatic Preserve
- Located in Marion and Citrus counties
- 73-square-mile watershed
The Rainbow River in Marion County begins at Rainbow Springs in the town of Dunnellon and makes its way 5.7 miles until it merges with the Withlacoochee River. The Withlacoochee River ultimately discharges into the Gulf of America on the border of Citrus and Levy counties.Rainbow Springs has the fourth largest flow of all Florida’s springs and provides fresh water to the Rainbow and Withlacoochee rivers. The… Read more
This project helped develop techniques to control algae and restore aquatic plants in the lower portion of the Rainbow River.BackgroundIn the lower portions of the Rainbow River, native aquatic vegetation may be decreasing while various types of algae, such as filamentous macroalgae (Lyngbya) and phytoplankton, may be increasing. An increase in algae downstream is typical in most rivers as the river’s velocity — the speed at which water flows — decreases and water… Read more
The District establishes Minimum Flows and Levels (MFLs) to help protect water resources. An MFL is a regulation to protect springs, spring runs, rivers, lakes, wetlands and aquifers from ground and surface water withdrawals that would cause significant harm. OverviewMinimum flows and levels are limits established by the Southwest Florida Water Management District (District) Governing Board for surface waters and groundwater that are intended to prevent significant harm… Read more
KarstMuch of Florida’s landscape is composed of “karst” landforms. Karst terrain is a land surface produced when bedrock — mostly limestone in Florida — dissolves slowly over time as acidic rainwater passes through it. Karst terrain provides a direct connection between surface waters and groundwater and is characterized by springs, sinkholes and caverns.Springs Springs are a common feature of karst topography. They also serve as key tributaries of the… Read more
In 1987 the Florida Legislature created the Surface Water Improvement and Management (SWIM) Act to protect, restore and maintain Florida's highly threatened surface water bodies. Under this act, the state's five water management districts identify a list of priority water bodies within their authority and implement plans to improve them. The District's SWIM ProgramThe Southwest Florida Water Management District's Surface Water Improvement and Management… Read more
A spring is a place where groundwater discharges from the underlying limestone bedrock to the Earth's surface through a natural opening in the ground. In the Springs Coast Watershed, the Floridan aquifer is close to the land surface, which means that the springs are exposed portions of the aquifer! As windows into the aquifer, springs have long been one of Florida's most valued natural and scenic resources. In 1513, the Spanish explorer Ponce de Leon came to Florida in… Read more
Your Questions AnsweredNovember 2021Florida has the largest concentration of springs in the world, with more than 200 springs within the boundaries of the Southwest Florida Water Management District. These natural wonders rely on rainfall to replenish their water source, and Dr. Madison Trowbridge explains how the rainy season provides big benefits for Florida’s springs.Q: What is spring flow?A: Spring flow is the amount of water that… Read more
The Northern Planning Region encompasses all of Citrus, Hernando and Sumter counties and portions of Lake, Levy and Marion counties. It is one of the more rural areas of the Southwest Florida Water Management District, with agriculture, rangeland, upland forest and wetlands constituting approximately 75 percent of all land uses. Population centers include Ocala, northern Sumter County and western Hernando County. The region includes extensive tracts of… Read more
As the District’s General Counsel, Chris Tumminia provides advice and counsel to the District’s Governing Board, executive director and District staff regarding matters of law and policy. His primary areas of practice have included civil and administrative litigation, water use permitting, minimum flows and levels, and water supply planning. Tumminia also has represented the District in numerous proceedings before the State of Florida Division of Administrative Hearings,… Read more
Some of the cities and towns located in the Springs Coast Watershed include Brooksville, Crystal River, Dunnellon, Homosassa, New Port Richey and Spring Hill. The trademarks of this watershed are the many springs that discharge to form rivers, the extensive coastal swamps and salt marshes, high pine woodlands and lakes.There are more than 200 documented springs that occur throughout the Southwest Florida Water Management District (District). Five of these have a discharge of… Read more
Four rivers impressively emerge from the Green Swamp. They are the Hillsborough, Withlacoochee, Ocklawaha and Peace rivers. These rivers provide much of central Florida’s water supply. Check out these stats and visit our other virtual watershed excursions to learn more about these rivers.Hillsborough River
- Total length: 55 miles
- …
Purchase Made in Partnership with The Nature Conservancy
The Southwest Florida Water Management District has closed on the purchase of the environmentally important Rainbow River Ranch.
This important land acquisition is about 16 percent of the eastern bank of the Rainbow River, and along with existing public ownership, will allow the District to continue its mission of protecting water resources and this important natural resource.
This property… Read more
Purchase Made in Partnership with The Nature Conservancy
The Southwest Florida Water Management District's (District) has closed on the purchase of the environmentally important Rainbow River Ranch.
This important land acquisition is about 16 percent of the eastern bank of the Rainbow River, and along with existing public ownership, will allow the District to continue its mission of protecting water resources and this important natural resource. This property and its… Read more
The Southwest Florida Water Management District will be treating infestations of hydrilla on the Rainbow River in Marion County March 31 through April 3. The section of the river to be treated is from upstream of KP Hole Park to where the Rainbow River meets the Withlacoochee River.Treatment involves the application of the aquatic herbicide Aquathol Super K. Treatment areas will be posted with warning signs displaying treatment dates and applicable water use restrictions.… Read more
The Southwest Florida Water Management District will be treating infestations of hydrilla on the Rainbow River in Marion County Feb. 4-7. The treatment area is from the County Road 484 bridge to where the Rainbow River meets the Withlacoochee River.Treatment involves the application of the aquatic herbicide Aquathol Super K. Treatment areas will be posted with warning signs displaying treatment dates and applicable restrictions. Water from the treated section of the river… Read more
The Southwest Florida Water Management District will be treating hydrilla on the Rainbow River from the Withlacoochee River to upstream of the Rainbow Springs State Park Campground during the week of November 2-6.Treatment involves the spot application of the aquatic herbicide Aquathol Super K to scattered infestations. Treatment areas will be posted with warning signs displaying treatment dates and applicable water use restrictions. Treated river water should not be used… Read more
The Southwest Florida Water Management District will be treating infestations of hydrilla on the Rainbow River in Marion County Oct. 27-31. The section of the river to be treated is from upstream of KP Hole Park to where the Rainbow River meets the Withlacoochee River.Treatment involves the application of the aquatic herbicide Aquathol Super K. Treatment areas will be posted with warning signs displaying treatment dates and applicable restrictions. Water from the treated… Read more