September 5, 2025

Water Conditions Tracker

Lake Okeechobee Levels & Caloosahatchee Flow Impacts

On 9/3/25 Lake Okeechobee was at 12.51 feet, increasing by 0.19 feet in the past week. The weekly average flow at S-79 was 2,971 cfs (cubic feet per second) and flow from the Lake at S-77 was an average of 0 cfs. The 14-day average flow at S-77 was 0 cfs. The 14-day average flow at S-79 was 2,657 cfs and has been in the damaging flow envelope (>2,600 cfs; RECOVER 2020) for 1 day after 9 days in the stress flow envelope (2,100- 2,600 cfs).

For more information on Lake Okeechobee and estuary conditions go to the latest Caloosahatchee Conditions Report.

Water Surface Temperature

Weekly Rainfall Totals

WP Franklin (S-79): 1.15" Ortona (S-78): 2.21" Julian Keen Jr. (S-77): 1.94"

Red Tide

On 8/29/25, the FWC reported that the red tide organism, Karenia brevis, was observed at background concentrations in one sample collected from Okaloosa County. In Southwest Florida over the past week, K. brevis was not observed.

Blue-Green Algae

On 9/2/25, sampling for cyanobacteria by the Lee County Environmental Lab reported Microcystis and Planktothrix as present upstream of the Franklin Locks, appearing as some light streaks.

On 9/2/25, satellite imagery of Lake Okeechobee showed the presence of an algal bloom but cloud cover and wind prevented an area from being determined. The previous area of the bloom measured on 8/30/25 covered about 300 square miles, or 64% of the lake.

The algal bloom has decreased in area since 8/28/25, when the previous area covered about 360 square miles, or 77% of the lake.

Become a Citizen Scientist and Get the Algae Reporting App Today!

SCCF wants to know when and where all types of algae sightings occur to monitor conditions around the islands and to investigate algae bloom occurrence with patterns in seasonal weather changes and Lake Okeechobee water management practices.

Click on and bookmark this link to report an algal bloom sighting.

To learn more about our current water conditions, click on the following links:

Water Quality Dashboard

Water Quality FAQ

Find answers to some of our most commonly asked questions regarding water quality and more.

Water Conditions Update Archive

Caloosahatchee Conditions Report

A collaborative, weekly analysis, including recommendations for water managers regarding Lake Okeechobee flows.

RECON

SCCF's River, Estuary, and Coastal Observing Network is a network of eight optical water quality sensors deployed throughout the Caloosahatchee and the Pine Island Sound estuary to provide real-time water quality data.

Caloosahatchee River Virtual Tour



Red Tide Resources

NOAA HAB Monitoring System - Lake Okeechobee

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