For a more interactive version of this (and previous years) data or to download raw data files, please visit the Interactive Sandusky Bay Data Viewer. For comments, questions, or issues, please email .

Sampling Date

2026 to Date

Toxin Data

US EPA recommended threshold for recreational Microcystin concentrations is a maximum of 8 µg/L. More information about the EPA recommended criteria for Microcystin concentrations can be found here.

Environmental Data

Chlorophyll Data

Fluoroprobe Data

Total Suspended Solids

6/2/2026

Environmental Data Parameters

Fluoroprobe Data

Data sourced from a BBE fluoroprobe for phytoplankton biomass estimates. These values are estimates of the approximate concentrations of these particular phytoplankton.

Chlorophyll Data

Values for total chlorophyll-a extracted using DMSO in ug/L.

Total Suspended Solids

6/8/2026

Environmental Data

Fluoroprobe Data

Chlorophyll Data

Toxin Data

Total Suspended Solids

ggplot(df_filtered_6.10, aes(x = Site, y = TSS)) +
  geom_bar(stat = "identity", fill = "brown") +
  labs(title = "Total Suspended Solids by Site - 6/10/2026",
       x = "Site",
       y = "Total Suspended Solids (mg/L)") +
  theme(axis.text.x = element_text(angle = 45, hjust = 1))

6/16/2026

Environmental Data

Fluoroprobe Data

Chlorophyll Data

Toxin Data

Total Suspended Solids

6/23/2026

Environmental Data

Fluoroprobe Data

Chlorophyll Data

Toxin Data

Total Suspended Solids

6/30/2026

Environmental Data

Fluoroprobe Data

Chlorophyll Data

Toxin Data

Total Suspended Solids

7/7/2026

Environmental Data

Fluoroprobe Data

Chlorophyll Data

Toxin Data

Total Suspended Solids

7/14/2026

Environmental Data

Fluoroprobe Data

Chlorophyll Data

Toxin Data

Total Suspended Solids

7/22/2026

Environmental Data

Fluoroprobe Data

Chlorophyll Data

Toxin Data

Total Suspended Solids

7/28/2026

Environmental Data

Fluoroprobe Data

Chlorophyll Data

Toxin Data

Total Suspended Solids

8/4/2026

Environmental Data

Fluoroprobe Data

Chlorophyll Data

Toxin Data

Total Suspended Solids