Brevard County Save Our Indian River Lagoon

06/09/2026

Algae Bloom Report for the week of June 01, 2026. The Central-North IRL (C-NIRL), Central Banana River Lagoon (C-BRL), Southern Banana River Lagoon (S-BRL), Southern-North IRL (S-NIRL), and Northern-Central IRL (N-CIRL) ended the week within low-bloom conditions. The Southern Mosquito Lagoon (SML), Northern-North IRL (N-NIRL), and Northern Banana River Lagoon (N-BRL) ended the week within mid-bloom conditions.

The estimated algae concentrations in the Indian River Lagoon (IRL) decreased in the C-NIRL, S-BRL, and N-CIRL and increased in the SML, N-NIRL, N-BRL, C-BRL, and S-NIRL.

Blooms are classified as Harmful Algal Blooms when chlorophyll-A concentrations reach high-bloom conditions above 80 µg/L and are persistent for a week or more. Fluctuations below that level and duration are not unusual in the Indian River Lagoon. Visit https://conta.cc/4e1fDDC for the detailed report

Email from Brevard County Natural Resources Management June 01 to June 07, 2026 Weekly Indian River Lagoon Harmful Algal Bloom Observations in Brevard County Using Remote Sensing Report Date - June 01

06/01/2026

Algae Bloom Report for the week of May 25, 2026. The Northern-North IRL (N-NIRL), Central-North IRL (C-NIRL), Central Banana River Lagoon (C-BRL), Southern Banana River Lagoon (S-BRL), Southern-North IRL (S-NIRL), and Northern-Central IRL (N-CIRL) ended the week within low-bloom conditions. The Southern Mosquito Lagoon (SML) and Northern Banana River Lagoon (N-BRL) ended the week within mid-bloom conditions. The estimated algae concentrations in the Indian River Lagoon (IRL) decreased in the C-BRL and increased in the SML, N-NIRL, C-NIRL, N-BRL, S-BRL, S-NIRL, and N-CIRL.

Algal blooms are classified as Harmful Algal Blooms when chlorophyll-A concentrations reach high-bloom conditions above 80 µg/L and are persistent for a week or more. Fluctuations of concentrations below that level and duration are not unusual in the Indian River Lagoon.

Visit https://conta.cc/3Py51Tu for the detailed report.

Email from Brevard County Natural Resources Management May 25 to May 31, 2026 Weekly Indian River Lagoon Harmful Algal Bloom Observations in Brevard County Using Remote Sensing Report Date - May 25 to

06/01/2026

Pause the Fertilizer to Protect the Lagoon.

Today marks the start of the Summer Fertilizer Blackout Period in the Indian River Lagoon watershed. From June 1 to September 30, nitrogen-containing fertilizer is prohibited from being applied to lawns and landscaping.

During Florida’s rainy season, fertilizer can quickly wash off lawns and into storm drains or be pushed past a lawn's root zone and into groundwater that flows directly to our waterways. Taking a break from fertilizing during the next four months helps reduce nutrient pollution and supports cleaner water, healthier seagrass, and a stronger Lagoon ecosystem.

The good news? Your lawn usually doesn’t need fertilizer this time of year thanks to regular rains.

Small actions at home can make a big difference for the Indian River Lagoon. Stopping pollution at the source also makes SOIRL's large-scale pollution-reduction projects work more efficiently. Working together, we can get to a healthier Lagoon faster. 🌿💧

05/29/2026

Check out our latest newsletter for information on the upcoming fertilizer blackout period, quarterly project updates, and upcoming volunteer opportunities. Visit https://conta.cc/49qtNvp to read it now or subscribe to get it delivered right to your inbox.

Email from Brevard County Natural Resources Management     Save Our Indian River Lagoon May News   Pause the Fertilizer, Protect the Lagoon Summer in Florida means afternoon rainstorms are back — and

05/26/2026

Algae Bloom Report for the week of May 18, 2026. The Northern-North IRL (N-NIRL), Central-North IRL (C-NIRL), Northern Banana River Lagoon (N-BRL), Central Banana River Lagoon (C-BRL), Southern Banana River Lagoon (S-BRL), Southern-North IRL (S-NIRL), and Northern-Central IRL (N-CIRL) ended the week within low-bloom conditions. The Southern Mosquito Lagoon (SML) ended the week within mid-bloom conditions. The estimated algae concentrations in the Indian River Lagoon (IRL) decreased in the SML, N-NIRL, N-BRL, C-BRL, S-NIRL, and N-CIRL and increased in the C-NIRL and S-BRL.

Algal blooms are classified as Harmful Algal Blooms when chlorophyll-A concentrations reach high-bloom conditions above 80 µg/L and are persistent for a week or more. Fluctuations of chlorophyll-A concentrations below that level and duration are not unusual in the Indian River Lagoon.

Visit https://conta.cc/4wXLMUe for the detailed report.

Email from Brevard County Natural Resources Management May 18 to May 24, 2026 Weekly Indian River Lagoon Harmful Algal Bloom Observations in Brevard County Using Remote Sensing Report Date - May 18 to

05/19/2026

Algae Bloom Report for the week of May 11, 2026. The Central-North IRL (C-NIRL) and Southern Banana River Lagoon (S-BRL) ended the week within healthy bloom conditions. The Central Banana River Lagoon (C-BRL), Southern-North IRL (S-NIRL), and Northern-Central IRL (N-CIRL) ended the week within low-bloom conditions. The Southern Mosquito Lagoon (SML), Northern-North IRL (N-NIRL), and Northern Banana River Lagoon (N-BRL) ended the week within mid-bloom conditions. The estimated median Chlorophyll A (ChlA) in the Indian River Lagoon (IRL) increased across all basins.

Algal blooms are classified as Harmful Algal Blooms when chlorophyll-A concentrations reach high-bloom conditions above 80 µg/L and are persistent for a week or more. Fluctuations of chlorophyll-A concentrations below that level and duration are not unusual in the Indian River Lagoon.

Visit https://conta.cc/4dvh9MH for the detailed report.

Email from Brevard County Natural Resources Management May 11 to May 17, 2026 Weekly Indian River Lagoon Harmful Algal Bloom Observations in Brevard County Using Remote Sensing Report Date - May 11 to

05/15/2026

Save Our Indian River Lagoon Citizen Oversight Committee Meeting

05/12/2026

Algae Bloom Report for the week of May 04, 2026. The Central-North IRL (C-NIRL), Southern Banana River Lagoon (S-BRL), Southern-North IRL (S-NIRL), and Northern-Central IRL (N-CIRL) ended the week within healthy conditions. The Northern-North IRL (N-NIRL) and Central Banana River Lagoon (C-BRL) ended the week within low-bloom conditions. The Southern Mosquito Lagoon (SML) and Northern Banana River Lagoon (N-BRL) ended the week within mid-bloom conditions.

The estimated algae concentrations in the Indian River Lagoon (IRL) decreased across all basins.

Algal blooms are classified as Harmful Algal Blooms when chlorophyll-A concentrations reach high-bloom conditions above 80 µg/L and are persistent for a week or more. Fluctuations of chlorophyll-A concentrations below that level and duration are not unusual in the Indian River Lagoon.

Visit https://conta.cc/433AlfH for the detailed report.

Email from Brevard County Natural Resources Management May 04 to May 10, 2026 Weekly Indian River Lagoon Harmful Algal Bloom Observations in Brevard County Using Remote Sensing Report Date - May 04 to

05/10/2026

If you live along a stormwater pond or canal and choose to fertilize, remember to leave a buffer of at least 10 feet where no fertilizer is applied. This reduces fertilizer runoff into the water, thus cutting off food for harmful algae blooms.

Adding a low-maintenance buffer, where you mow less frequently, or a planted buffer that includes a mix of bunch grasses, groundcover, and woody shrubs can further help our waterways by pulling excess nutrient pollution from the groundwater and preventing muck-forming grass clippings from entering the water.

Even if you don't live along the water, buffer zones can be beneficial along hard-surfaced areas like roads, driveways, and sidewalks. They help to reduce runoff pollution from yards. Not only do they help the water quality of the lagoon, but they also provide habitats for pollinators, birds, and other wildlife.

05/06/2026

Algae Bloom Report for the week of April 27, 2026. The Central-North IRL (C-NIRL), Southern Banana River Lagoon (S-BRL), and Northern-Central IRL (N-CIRL) ended the week within healthy bloom conditions. The Southern-North IRL (S-NIRL) ended the week within low-bloom conditions. The Southern Mosquito Lagoon (SML), Northern-North IRL (N-NIRL), Northern Banana River Lagoon (N-BRL), and Central Banana River Lagoon (C-BRL) ended the week within mid-bloom conditions. The estimated algae concentrations decreased in the SML and increased in the other basins.

Algal blooms are classified as Harmful Algal Blooms when chlorophyll-A concentrations reach high-bloom conditions above 80 µg/L and are persistent for a week or more. Fluctuations of chlorophyll-A concentrations below that level and duration are not unusual in the Indian River Lagoon.

Visit https://conta.cc/4dbI8Nk for the detailed report.

Email from Brevard County Natural Resources Management April 27 to May 03, 2026 Weekly Indian River Lagoon Harmful Algal Bloom Observations in Brevard County Using Remote Sensing Report Date - April 2