Port Pulls Deep Dredge End-Around


JUNE 22, 2017


Port Plans to Start Dredging Without Local Consent

Frustrated by a lack of funding support, JAXPORT recently announced a new plan to dredge 11 miles of the St. Johns River channel, instead of 13 miles, in an effort to reduce the cost of the project.

JAXPORT also released a funding plan that relies on $47-$150 million from Jacksonville.

The plan calls on dredging to begin later this year, despite a lack of transparency and public scrutiny and no guarantee of future funding to complete the project:

  • No formal public discussion or forum has occurred regarding the pros and cons of the proposed 11-mile project.
  • No local funds have been approved, yet future Jacksonville City Councils would be expected to support the dredging after it is well underway.
  • JAXPORT has not disclosed the total estimated cost required to meet its growth projections. This includes close to $1 billion for landside improvements.
  • Negotiations to relocate TraPac from its state-of-the-art terminal to Blount Island are still ongoing and relocation costs have not been disclosed.
  • The Army Corps of Engineers has not yet released any information updating the costs, benefits, or environmental impacts of the new 11-mile plan.
  • An ongoing lawsuit is underway that was filed by St. Johns RIVERKEEPER challenging the Deep Dredge.
  • The JAXPORT Board has not voted to authorize the new dredging proposal or the funding plan. The next JAXPORT Board meeting will be Monday, June 26, 2017 at 9 AM at 2831 Talleyrand Ave., Jacksonville, FL 32206.

JAXPORT is also disseminating misleading and inaccurate information about the project and has failed to fully-disclosed the total cost of the project to the public and decision-makers.

A comprehensive analysis by local logistics expert Dale Lewis using the port’s own data clearly demonstrates that JAXPORT’s job claims and economic projections are unrealistic and significantly overblown. For more information, visit southeasternports.net.

The dredging actually only makes up about 1/3 of the total cost of the expansion project. According to JAXPORT’s own strategic plan, the port would need to invest nearly $1 billion in landside improvements to meets its goals.

“JAXPORT’s effort to mislead the public, avoid public scrutiny, and commit future City Councils to support this project before it has even been fully vetted is outrageous,” declares Lisa Rinaman, the St. Johns Riverkeeper. “Many questions remain regarding the economic feasibility and environmental impacts of the Deep Dredge, and they still don’t have a plan to offset the damage that will occur to the St. Johns River.”

If the dredging begins this year, future City Councils will be expected to provide substantial funding for the continuation of the project beginning in 2020. This would potentially require significant tradeoffs involving essential public services, programs and infrastructure projects. The City of Jacksonville already has a substantial backlog of unfunded infrastructure projects that includes streets, bridges, sidewalks, and drainage. In addition, it is estimated to cost up to $700 million just to remove failing septic tanks that are polluting the St. Johns River and its tributaries.

“We cannot afford to kick the can down the road and allow this potential boondoggle in the making to begin before it has been fully vetted,” states St. Johns Riverkeeper Lisa Rinaman. “We are putting our river at risk, before JAXPORT has demonstrated that the dredging is a wise investment and even necessary.”

Rinaman continues, "The Jacksonville City Council and Mayor Curry must provide an opportunity for a full evaluation of the project before the Deep Dredge is allowed to proceed. They owe it to this community, our river, and future City Councils."

Click here for more information about the Deep Dredge and the concerns of St. Johns RIVERKEEPER. 

Also, read this recent column from the Florida Times-Union's Ron Littlepage - Unelected JaxPort members want to waste your money on dredging project.

Save Our Water! Campaign and Raffle

Save Our Water! Campaign and Raffle

Ten years ago, SweetWater Brewing Company began working with the Chattahoochee Riverkeeper to support their mission of protecting the "Hooch."  The river provides drinking water for millions of people and clean water for SweetWater's beer.  Now similar partnerships exist with other Waterkeeper organizations throughout the southeast, including St. Johns Riverkeeper.  

St. Johns Riverkeeper is partnering with SweetWater for the 6th year!   Look for the "Save Our Water" paper fish at participating businesses and local events and help us save the St. Johns!


ONLINE RAFFLE TICKET SALES ARE NOW OPENEnter for a chance to win a Custom 12' BOTE Stand Up Paddle Board will be available to take home at River Ruckus!  A $5 raffle ticket donation gets you one chance to win. The drawing will take place at 2:30 pm on Saturday, August 26, 2017 at the Riverside Arts Market during our annual event. 

  • River Ruckus, August 26, 10:00 am - 3pm @ Riverside Arts Market. The event features live music, craft beer from SweetWater Brewing Company, water based activities, free boat trips, kids crafts and more. 

The campaign continues until Labor Day. 

Stop by one of the participating local restaurants or bars to support the cause and help protect the St. Johns River!


Alewife Craft Beer Bottle Shop


San Marco

High Tide Burrito

Jacksonville Beaches


Thanks to SweetWater Brewing Co. and all of the great business partners for participating in the "Save Our Water" campaign and supporting St. Johns Riverkeeper's work for clean water and a healthy river!  Contact Shannon if you have a bar, restaurant or event that you think should be a part of the "Save Our Water" campaign. 

Get the Facts About Dredging Proposal


Click here to download a factsheet about this important issue.

JAXPORT wants to deepen the last 11 miles of the St. Johns River from 40 to 47 feet for bigger ships. By digging a deeper channel, are we also digging a deeper hole for taxpayers and the St. Johns River?

St. Johns RIVERKEEPER has serious concerns that:

  • The impacts to the river have been significantly underestimated,
  • The economic and environmental risks have been ignored or downplayed,
  • The projected economic benefits have been dramatically overstated, 
  • The proposed mitigation is woefully inadequate, doing nothing to offset the damage to the river, and
  • The Army Corps of Engineers (ACOE) analysis is incomplete, failing to fully assess tributary impacts or conduct a multi-port analysis.


  • Eleven miles of the river would be deepened, from the mouth of the St. Johns River to just west of the Dames Point Bridge near Blount Island.
  • Two areas of the channel close to Chicopit Bay and Ft. Caroline National Memorial would be widened.
  • The dredged material will be placed in a newly created Offshore Dredged Material Disposal Site (ODMDS), located in the Atlantic Ocean southeast of the mouth of the river.
  • The Environmental Impact Study (EIS) was fast-tracked by President Obama’s “We Can’t Wait Initiative,” reducing the timeframe by 14 months and limiting the ability of the Corps to thoroughly evaluate this complex issue.
  • JaxPort says the dredging will cost $484 million.  The infrastructure needed by JaxPort to meet its growth goals will increase the total cost of the project to well over $1 billion. 
  • JaxPort plans to begin the first phase of the dredging by the end of 2017, without any guaranteed future funding to continue the project. 

Environmental Impacts

The St. Johns River currently suffers from numerous unresolved pollution problems. The Deep Dredge would cause significant additional harm to the health of the St. Johns, while providing no mitigation to offset the damage. This would only make it much more expensive and difficult to restore the health of our river.  

  • Salinity will move farther upstream, impacting hundreds of acres of wetlands and submerged aquatic vegetation (SAVs) and killing or stressing numerous trees in some sections of the river. Critical habitat for fisheries and pollution filters for our river will be lost.   Read this article to learn more about the impacts of increased salinity on wetlands, riparian forests, and floodplains.  Also, watch this short video with wetland scientist, Robin Lewis. 
  • The most significant impacts to wetlands are expected to occur along the St. Johns, within the Ortega River, Julington, Durbin, and Black Creeks.
  • As water remains in the river longer, concentrations of pollutants and toxic algal blooms will likely increase.
  • Larger ships will create larger wakes, increasing the likelihood of shoreline erosion.  This will impact riverfront property owners and conservation areas, such as the Timucuan Preserve.
  • The mitigation plan is woefully inadequate, failing to offset the damage incurred from dredging.
  • Dredging impacts will intensify the effects of sea level rise, increasing the risk of flooding in low-lying areas. Unfortunately, the Army Corps evaluates the effects of the minimum value for sea level rise and never considers either the Intermediate or the worst-case scenario.
  • The U.S. Fish and Wildlife Service and the Florida Fish and Wildlife Conservation Commission have expressed concerns regarding the potential impacts to threatened and endangered species from the blasting that will be necessary.
  • The Army Corps acknowledges the limitations of its models: "Actual conditions will deviate from those used to drive the models. These deviations introduce additional uncertainty in the models’ ability to predict future conditions and impacts."  
  • The models estimate the exact same impact to wetlands (394.57 acres) and submerged aquatic vegetation (180.5 acres) for every depth analyzed (44, 45, 46, 47, and 50-ft deep channel).
  • The Independent Expert Peer Review (IEPR) of the Environmental Impact Statement (EIS) raised significant concerns stating that the analysis of salinity results “provide an incomplete understanding of the impacts of channel enlargement" and the sediment modeling results “do not provide a reliable estimate of the annual sedimentation rates” and “are assumed to be unreliable indicators of future conditions."
  • The surficial aquifer could potentially be exposed to saltwater intrusion from the blasting and removal of bedrock.
  • The Army Corps study is incomplete, failing to fully assess the potential impacts to the river and its tributaries.
    The Army Corps of Engingeers has a long track record of environmental miscalculations. Read more. The recent dredging of Biscayne Bay by PortMiami resulted in widespread damage to threatened coral.  A study found that sediment spread across an area about 14 times bigger than what was allowed under a Corps permit, causing coral to die.

Economic Considerations

A recent economic analysis of the dredging project, concluded that the job and economic projections are unrealistic and significantly overblown. The prospects of Jaxport outcompeting its competitors, like Savannah, for the bigger ships is also highly unlikely. With a total price tag of well over $1 billion, taxpayers could be left with a boondoggle and irreversible damage to the St. Johns River.

  • Based on JaxPort's own strategic plan, it will likely cost well over $1 Billion for Jaxport to potentially achieve its growth goals. In addition to the dredging, JaxPort must invest heavily in landside infrastructure and relocation costs in order to accommodate larger ships and future growth.
  • The only job projections are from a study conducted by Martin & Associates, a paid consultant of JaxPort.  Nearly 81% of the jobs cited by the study are "related jobs." Yet, Martin clearly states: “It is to be further emphasized that when the impact models are used for planning purposes, related jobs should not be used to measure the economic benefits of a particular project. Related jobs are not estimated with the same degree of defensibility as direct, induced and indirect jobs.”
  • Based on the comprehensive analysis by an independent expert, the job and economic projections for the dredging project appear to be unrealistic and significantly overblown.  Click here to learn more about the work of Dale Lewis and to watch a compelling video about the challenges Jacksonville faces to compete for market share. 
  • The Army Corps only evaluated the benefits of larger vessels having access to a deeper harbor. These transportation cost savings would accrue primarily to the shippers and carriers, not the local economy.
  • The Independent Expert Peer Review (IEPR) concluded that "The Regional Economic Development (RED) benefits are incorrectly attributed to the harbor deepening and therefore overemphasize regional benefits of the Jacksonville Harbor Project."
  • The Army Corps has failed to conduct a multi-port analysis. As a result, the IEPR identified this omission as a “showstopper” issue.
  • In its 2012 Panama Canal impact study, the Army Corps wrote that Savannah, Charleston and Miami would be the critical southeastern ports for handling Post Panamax vessel traffic. Other regional ports, such as Jacksonville, should be “cascade ready”.
  • According to “The Great Port Mismatch” from the Brookings Institution and JPMorgan Chase & Co., Jacksonville is not one of the top 25 port complexes in the U.S. in terms of total exports and imports by value. However, seven other metropolitan areas on the East Coast made the list, including all of Jacksonville’s major competitors.
  • The Savannah Morning News reported that "The ports of New York/New Jersey, Norfolk and Savannah each had 31 calls from 10,000-plus TEU vessels between July 1 and Dec. 31 last year. Charleston saw seven of the big ships during the same time period, while Jacksonville and Miami had none."
  • The Army Corps has a poor track record of accurately estimating costs. According to the Florida Times-Union, “The most recent project, which deepened about five miles of the harbor from 38 to 40 feet, cost almost four times what was planned, according to Army Corps documents. In 2003, the corps predicted the project would cost $16.4 million, but when it wrapped up in 2010 the cost ran to $64.8 million." Just recently, the price tag for the Savannah port dredging project that is already underway rose by 38 percent to $973 million.
  • Jacksonville already has a significant backlog of unfunded infrastructure projects that includes streets, bridges, sidewalks, drainage, and government buildings. The remediation of failing septic tanks alone is estimated to cost as much as $700 million.  


Southeastern Container Port Investment and Competition: It Takes Much More than Dredging, by Dale Lewis, a former CSX Director of Strategic Analysis 

Does the Deep Dredge Make Economic Sense for Jacksonville?, by St. Johns RIVERKEEPER 

JAXPORT as an Urban Growth Strategy: Community Implications and Prospects, by Dr. David Jaffee, UNF Department of Sociology


A Peer Review by a panel of independent experts questions some of the modeling results and conclusions in the Environmental Impact Statement (EIS), raising significant doubts about the thoroughness and accuracy of the evaluation.

Here are some of the findings of the Panel:

  • "The analysis and presentation of salinity results in the General Reevaluation Report II (GRR2) provide an incomplete understanding of the impacts of channel enlargement."
  • "The adaptive hydraulics (ADH) sediment modeling results do not provide a reliable estimate of the annual sedimentation rates necessary to establish environmental effects and sediment management requirements."
  • "Because the period was not shown to be representative of typical conditions and the model [ADH] is not considered validated, the results are assumed to be unreliable indicators of future conditions."
  • "The Adaptive Management Plan does not include key elements such as trigger thresholds and specific actions to correct deficiencies."

The peer review experts also took issue with the economic analysis that was conducted.

  • "The Regional Economic Development (RED) benefits are incorrectly attributed to the harbor deepening and therefore overemphasize regional benefits of the Jacksonville Harbor Project."
  • "According to Section 3.3.4, any RED benefits resulting from increased traffic will occur under the without- and with-project conditions and are not associated with deepening of the harbor."
  • "An accurate assessment of the regional economic benefits generated by the proposed project is needed to support the overall understanding of project benefits and of the project’s impact on the regional economy."
  • "Federal interest has not been demonstrated in the General Reevaluation Report II (GRR2) because a multi-port analysis assessing competition among regional ports is not provided." 


Contact Mayor Lenny Curry, City Council Members,  and the JAXPORT Board of Directors and tell them to reject the proposed dredging project.  The Deep Dredge would cause signficant harm to the St. Johns River at a signficant cost to taxpayers.  No mitigation is being offered that would offset the damage to our river and little assurance is provided that this highly speculative project will provide a favorable return on investment to local residents. 

Mayor Lenny Curry 
117 W. Duval St. Suite 400  Jacksonville, FL 32202
(904) 630-1776, MayorLennyCurry@coj.net

Jacksonville City Council 
Click here for contact information.

JAXPORT Board of Directors
(904) 357-3036


Florida Times-Union 6.20.17: "The people you did elect to make decisions on spending local taxpayer money — the members of the City Council — won’t really have a say in the matter because of the devious funding formula JaxPort is proposing."

Florida Times-Union 6.13.17: "More than $300 million was needed for the phase-out of septic tanks and another $180 million was needed for storm water improvements. Those projects would improve the health of the St. Johns River. JaxPort wants to divert money from that to dredge the channel and worsen the river’s health, all the while proclaiming how important it is to protect the river. That’s another part of the con."

Florida Times-Union 6.12.17 - "He said his goal is to provide city leaders with the full range of costs and benefits so they have a complete picture, not just the best-case scenario that usually gets painted to justify the huge cost of deepening the river.  He said when he dug into annual reports by the Florida Ports Council, he found the state’s ports have a dismal track record when it comes to cargo container projections. Over and over again, they made eye-catching predictions that didn’t pan out, but they still kept forecasting accelerated growth."

Florida Times-Union 4.10.17 - "Unfortunately, the Corps’ evaluation remains incomplete, resulting in projected impacts to the river and its tributaries that have been significantly underestimated and a mitigation plan that fails to offset the damage.   In addition, JaxPort continues to exaggerate the economic benefits of the project while downplaying the risks to our river and taxpayers. As a result, we are left with no choice but to file a legal challenge of this ill-conceived project."

WJXT Channel 4, 4.7.17 - "We can't afford to roll the dice with the future of the St. Johns. Once the damage is done, there is no turning back," St. Johns Riverkeeper Lisa Rinaman said. "Unfortunately, the Army Corps has failed to exercise due diligence and provide the public with assurances that our river will be protected."

Florida Times-Union 3.23.17 - "To justify JaxPort’s mega-spending plan — $700 million on the dredge itself and hundreds of millions more for other infrastructure improvements — Lewis said the container business at JaxPort would have to grow 100 percent in the first nine years after dredging.  Over the past five years, Lewis points out, JaxPort’s container traffic has grown 1 percent a year."

Florida Times-Union 3.7.17 - "Before continuing along the seemingly predetermined path to spend $700 million to deepen the St. Johns River shipping channel, someone in authority needs to pay attention to what Dale Lewis is saying....Lewis speaks with the authority of a resume that includes 30 years of experience in rail, ship and truck transportation, a graduate degree in transportation from the Massachusetts Institute of Technology and a long career with CSX."

Jacksonville Business Journal, 3.6.17 - "In his presentation Friday, Lewis said he believes deepening the St. John's River will not increase Jaxport's market share in container shipping in the southeast region, nor will the deepening make Jaxport significantly more competitive with rival ports, Savannah or Charleston."

Tampa Bay Times, 11.22.16 - "Dredging at PortMiami killed far more coral than the U.S. Army Corps of Engineers predicted, scientists from the National Marine Fisheries Service and the University of Miami have concluded in a new study....The research team studied pictures taken before, during and after the dredge and said sediment spread across an area about 14 times bigger than the Corps permit allowed for."

An April 2016 article in Folio Magazine asks - If We Dredge It, Will They Come? And is it Worth the Risk?

On Tuesday, July 26, 2016, St. Johns RIVERKEEPER filed a notice withdrawing its legal challenge of the Army Corps of Engineers’ state Environmental Resource Permit (ERP) due the lack of enforceability and will now focus its efforts on a legal challenge at the federal level. Click here to read more. 

RIVERKEEPER GUEST COLUMN: April 19, 2016 - "Unfortunately, the analysis by the Army Corps of Engineers remains flawed, failing to accurately and thoroughly assess the economic and environmental impacts of the dredging. To make matters worse, virtually no mitigation is being proposed or required and important water quality protections will be waived for eight years. As a result, we are now left with no choice but to seek a legal remedy to ensure the protection of the St. Johns." Read more

DREDGING CHALLENGED FILED: On Friday, April 1, 2016, St. Johns RIVERKEEPER filed a Petition for Formal Administrative Hearing against the Florida Department of Environmental Protection (DEP) to challenge the state Environmental Resource Permit (ERP) for the proposed St. Johns River harbor deepening project. Read more

Port expansion damaged unique coral reefs, Miami Herald 9.20.15
"Rather than mitigate the negative affects of dredging and safeguard the only coral reef tract in the continental United States, the Corps and its contractor cut corners at every turn: allowing transport ships to leak sediment plumes that are strangling our reefs; refusing to replace ineffective monitoring devices; ignoring survey data that indicated, beyond doubt, that the reefs were dying; and casting aside the suggestions of local, state and federal experts. What’s worse, as the project’s sponsor, Miami-Dade County and its taxpayers, not the Corps, will ultimately bear the burden of paying for the reefs’ repair."  

PLANS FOR LEGAL CHALLENGE ANNOUNCED: On Tuesday, August 11, 2015, St. Johns RIVERKEEPER filed a Notice of Intent to Sue the Army Corps of Engineers (ACOE) regarding the proposed St. Johns River harbor deepening project. Learn more about the announcement on our blog, from this Florida Times-Union article, and this letter to the editor from Lisa Rinaman, the St. Johns Riverkeeper.

MEMORANDUM OF UNDERSTANDING: In August 2015, the Jax Chamber inexplicably backed out of its MOU with St. Johns RIVERKEEPER. At the beginning of the year, St. Johns RIVERKEEPER, the City of Jacksonville, Jax Chamber, and JAXPORT had signed a Memorandum of Understanding (MOU) outlining a plan to work together for the removal or breaching of the Kirkpatrick Dam (aka Rodman Dam) and restoration of the Ocklawaha River. If the restoration of the Ocklawaha River was authorized and funded by the state, St. Johns RIVERKEEPER agreed to not legally challenge the Army Corps of Engineers' Environmental Impact Statement (EIS) for the proposed dredging project.

While the restoration of the Ocklawaha would not mitigate for all of the impacts of dredging, no other mitigation option has been identified that would provide comparable ecological benefits to the St. Johns River. St. Johns RIVERKEEPER continues to seek more mitigation to help fortify the river, should the proposed deepening project move forward. Click here to learn more about the benefits of restoring the Ocklawaha.

POSSIBLE NEW PLAN: Having difficulty securing federal funding for the proposed dredging project, JAXPORT is looking at a possible new plan that would reduce the scope of the dredging from 13 river miles to 11. According to JAXPORT, the new plan would reduce the cost of the proposed project and help improve the project's benefit-to-cost ratio (BCR) which is currently only 2.7. The minimum criteria to qualify for federal funding is a BCR of 2.5. However, several other harbor expansion projects that are vying for limited federal dollars have higher ratios, such as Savannah with a BCR of 5.7.

ARMY CORPS OFTEN UNDERSTIMATES EXPENSES: The U.S. Army Corps of Engineers consistently, and sometimes drastically, underestimated the cost of deepening Jacksonville Harbor over the past 50 years, according to documents obtained by the Times-Union from the corps and JaxPort. Read the article

LEAD LETTER FROM RIVERKEEPER CHAIRMAN: When it comes to our city evaluating the deepening of the St. Johns River for JaxPort, the recommendation to dredge is coming from an “expert", the Army Corps of Engineers, which in project planning and estimating benefits, risks and costs has a track record that undermines its credibility. Read the entire letter.

PORT TASK FORCE: Soon after being elected in 2015, Mayor Lenny Curry decided to terminate the Port Task Force. The Port Task Force consists of community and business leaders appointed by Mayor Alvin Brown and tasked with evaluating the economic viability and environmental impacts of the proposed dredging project. 

ARMY CORPS COMPLETES STUDY:  In April of 2014, The US Army Corps of Engineers (USACE) completed a final Environmental Impact Statement (EIS) of the proposal to dredge the St. Johns River from 40 to 47-feet. Read St. Johns Riverkeeper's comments regarding the EIS. Florida Wildlife Federation, North Florida Land Trust, Public Trust Environmental Legal Institute of Florida, and Sierra Club Northeast Florida Group signed on to the comments, as well.

Judge Sides with District Over Springs

On May 24, 2017, Administrative Law Judge E. Gary Early issued his Final Order, dismissing the petition by St. Johns Riverkeeper, Florida Defenders of the Environment, Silver Springs Alliance, and Alice Gardner to invalidate an emergency Minimum Flow and Level (MFL) rule for Silver Springs.   

The emergency rule was recently approved by the St. Johns River Water Management District (SJRWMD) Governing Board, allowing the SJRWMD to now determine compliance with the Silver Springs MFL by assessing water elevations instead of actual flow rate.  An administrative hearing was held on May 11 in response to the legal challenge from the petitioners.  

By using minimum average water elevations, flows in Silver River could drop by as much as 34% below the average minimum flow set by the SJRWMD and still remain in compliance. This decline is equivalent to nearly 141 million gallons per day (mgd), or more than all of the freshwater used by Orlando and the rest of Orange County on a daily basis. This would allow the SRJWMD to meet the rule requirements and continue to approve more Consumptive Use Permits (CUPs) for groundwater pumping despite additional harm that would occur to Silver Springs.

For instance, the SJRWMD's Frequent High (FH) minimum flow of 828 cubic feet per second (cfs) which is necessary for a duration of 30 days every five years has not been met for even one day, let alone 30, since 2000 (see flow guage chart below).

For the last year, flows have also been well below the Minimum Level (ML) of 638 cfs that was established by the SJRWMD (see chart below).

“The flow data clearly indicates that Silver Springs and Silver River have been in serious decline for decades,” explains Lisa Rinaman, the St. Johns Riverkeeper. “By changing the rules, the District can conveniently hand out more permits, like the one for Sleepy Creek Lands, and shirk its responsibility for protecting these magical waterways.”

Click here to learn more about this critical issue.

Avoid Algal Blooms

Avoid Algal Blooms Credit: Dr. Gerry Pinto, Doctors Lake in Clay County

Nutrient overload, or eutrophication, from too much nitrogen and phosphorous is one of the most serious water quality problems facing the St. Johns River and its tributaries.

Blue green algae, also called cyanobacteria, are tiny organisms naturally found in all types of water. Excessive nutrients feed the algae, causing uncontrolled algal blooms that deplete oxygen in the water needed by fish and reduce light that is essential to submerged vegetation. Some types of cyanobacteria produce toxins that can be harmful to the health of humans, pets, and wildlife.

Different types of algal toxins include hepatotoxins (toxins that damage the liver), dermatoxins (toxins that damage the skin) and neurotoxins (toxins that damage the nerve cells). 

The St. Johns suffers from an excess of nutrients from wastewater treatment plants, industrial discharges, failing septic tanks, storm water runoff, and fertilizers that regularly wash into the river.

  • Blooms can look like a thick mat or foamy green scum and can give off an unpleasant odor.
  • Blue green algae sometimes produce toxins that can result in ear, eye, or skin reactions and hay fever-like or flu-like symptoms.
  • Do not swallow, swim, or wade in water where blooms are present.
  • Do not eat fish caught in the vicinity of a bloom.
  • Wash your skin and clothing with soap and water if you come into contact with a bloom.
  • Keep pets away from blooms.

If you see an algal bloom, please report it to St. Johns Riverkeeper and to the Florida Department of Environmental Protection by visiting www.reportalgalbloom.com the toll-free hotline at 855-305-3903.  When possible, also include GPS coordinates and photos. 

To report illnesses or symptoms from being exposed to a toxic algal bloom, contact the Florida Poison Control Center at
1-800-222-1222.  For information on health advisories, contact your local county health department.

For more helpful information about algal blooms and how to avoid exposure to potentially harmful toxins, visit the following website:

Blue Green Algae FAQ from the Florida Department of Health

Aquatic Toxins - Florida Department of Health

Algae and Cyanobacteria - GreenWater Laboratories

Blue-Green Algae - Florida Fish and Wildlife Conservation Commission

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Save Our Water! Campaign and Raffle
Get the Facts About Dredging Proposal
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