Blog
SAVs
Welcome to the Slime Days of Summer
In the heat of late summer, many Florida waterways are coated with fluorescent green slime that can be highly toxic to humans and wildlife. Excess nitrogen and phosphorus pollution driven by agricultural runoff, sewage discharges, and excess fertilizer use trigger...
May 2026 SAVe Our River’s Grasses Expedition
From May 19–22, St. Johns Riverkeeper (SJRK) surveyed its 80-mile study reach in the lower St. Johns River, marking the beginning of the fourth year of the SAVe Our River’s Grasses Expedition. This long-term effort is focused on documenting the remaining submerged...
St. Johns River Science Consortium: Submerged Aquatic Vegetation (SAV)
St. Johns River Water Management District (SJRWMD) St. Johns River Science Consortium On May 28, St. Johns Riverkeeper had the opportunity to participate in the St. Johns River Consortium focused on submerged aquatic vegetation (SAV) in the lower St. Johns River. The...
State of the Watershed
St Johns RIVERKEEPER recently hosted a State of the Watershed event to inform and engage our river community. Lisa Rinaman, our St. Johns Riverkeeper, provided an important update on the St. Johns River: its current health, the challenges it faces, and the real...
Advancing SAV Restoration Through Collaboration
On Friday, February 27, SJRK teamed up with the GIS crew from Jacksonville University for a full day on the water visiting our submerged aquatic vegetation (SAV) temporary enclosure sites. Using drone technology, we captured aerial images and video to measure grass...
St. Johns River vegetation still feeling effects of Hurricane Irma
The following is an article by Dr. A. Quinton White, originally published in the Florida Times Union. — One of the key components for sustaining life in the St. Johns River is the submerged aquatic vegetation, or SAV, commonly called “eel grass.” The name...
2025 St. Johns Riverkeeper Recap
As we close the door on our milestone 25th anniversary year and look toward the next 25 years, we are grateful for your support. Thank you for standing by us as we fight for clean water and a healthy river. Thank you for supporting us as we educate the next generation...
This Week in the 904 Interview with the St. Johns Riverkeeper, Lisa Rinaman
What is the state of the St. Johns River? What are the current threats to the river? Why is submerged aquatic vegetation (SAV) important? How do we improve SAV growth in the St. Johns? How many springs feed the St. Johns? How will breaching the Rodman/Kirkpatrick Dam...