Indicators

Nutrients

Total Nitrogen - Discrete

Scatter plot of monthly average total nitrogen over time. If the time series included ten or more years of discrete observations, a significant (blue) or non-significant (magenta) trend line is also shown. Only nitrogen values obtained from laboratory analyses (triangles) are included in the plot.
Scatter plot of monthly average total nitrogen over time. If the time series included ten or more years of discrete observations, a significant (blue) or non-significant (magenta) trend line is also shown. Only nitrogen values obtained from laboratory analyses (triangles) are included in the plot.
Seasonal Kendall-Tau Results for - Total Nitrogen
Activity Type Statistical Trend Sample Count Years with Data Period of Record Median Result Value Tau Sen Intercept Sen Slope P
Lab Significantly increasing trend 9363 33 1993 - 2025 0.335 0.23873 0.2818 0.0049 0

Monthly average total nitrogen increased by less than 0.01 mg/L per year.

Map showing location of discrete water quality sampling locations within the boundaries of Biscayne Bay Aquatic Preserve. The bubble size on the maps above reflect the amount of data available at each sampling site.
Map showing location of discrete water quality sampling locations within the boundaries of Biscayne Bay Aquatic Preserve. The bubble size on the maps above reflect the amount of data available at each sampling site.

Total Phosphorus - Discrete

Scatter plot of monthly average total phosphorus over time. If the time series included ten or more years of discrete observations, a significant (blue) or non-significant (magenta) trend line is also shown. Only phosphorus values obtained from laboratory analyses (triangles) are included in the plot.
Scatter plot of monthly average total phosphorus over time. If the time series included ten or more years of discrete observations, a significant (blue) or non-significant (magenta) trend line is also shown. Only phosphorus values obtained from laboratory analyses (triangles) are included in the plot.
Seasonal Kendall-Tau Results for - Total Phosphorus
Activity Type Statistical Trend Sample Count Years with Data Period of Record Median Result Value Tau Sen Intercept Sen Slope P
Lab Significantly increasing trend 9858 33 1993 - 2025 0.009 0.37984 0.00576 0.00026 0

Monthly average total phosphorus increased by less than 0.01 mg/L per year.

Map showing location of discrete water quality sampling locations within the boundaries of Biscayne Bay Aquatic Preserve. The bubble size on the maps above reflect the amount of data available at each sampling site.
Map showing location of discrete water quality sampling locations within the boundaries of Biscayne Bay Aquatic Preserve. The bubble size on the maps above reflect the amount of data available at each sampling site.

Water Quality

Dissolved Oxygen - Continuous

Scatter plot of monthly average dissolved oxygen over time at continuously monitored program locations. Each location is analyzed separately, with significant (blue) or non-significant (magenta) trend lines shown for time series that included five or more years of observations.
Scatter plot of monthly average dissolved oxygen over time at continuously monitored program locations. Each location is analyzed separately, with significant (blue) or non-significant (magenta) trend lines shown for time series that included five or more years of observations.
Seasonal Kendall-Tau Results - Dissolved Oxygen
Program Location Statistical Trend Sample Count Years with Data Period of Record Median Result Value Tau Sen Intercept Sen Slope P
BBBB14 No significant trend 209766 7 2019 - 2025 7.2 -0.01 7.43 0 1
BBCWA4 Insufficient data to calculate trend 108422 4 2022 - 2025 6.5 - - - -
BBJT71 No significant trend 207039 7 2019 - 2025 7.0 0.06 7.14 0.01 0.5599
BBLR03 No significant trend 177333 6 2020 - 2025 4.2 0.06 3.89 0.02 0.6828
BBMRDW No significant trend 150197 5 2021 - 2025 4.7 0.1 4.25 0.03 0.58
BBMRRB Insufficient data to calculate trend 124787 4 2022 - 2025 6.4 - - - -
BBMRSC No significant trend 151445 5 2021 - 2025 2.2 0.23 2.23 0.16 0.076

No detectable change in monthly average dissolved oxygen was observed at five locations. There was insufficient data to fit a model for two locations.

Map showing location of dissolved oxygen continuous water quality sampling locations within the boundaries of Biscayne Bay Aquatic Preserve. The bubble size on the maps above reflect the amount of data available at each sampling site.
Map showing location of dissolved oxygen continuous water quality sampling locations within the boundaries of Biscayne Bay Aquatic Preserve. The bubble size on the maps above reflect the amount of data available at each sampling site.

Dissolved Oxygen - Discrete

Scatter plot of monthly average dissolved oxygen over time. If the time series included ten or more years of discrete observations, a significant (blue) or non-significant (magenta) trend line is also shown. Only dissolved oxygen values measured in the field (circles) are included in the plot.
Scatter plot of monthly average dissolved oxygen over time. If the time series included ten or more years of discrete observations, a significant (blue) or non-significant (magenta) trend line is also shown. Only dissolved oxygen values measured in the field (circles) are included in the plot.
Seasonal Kendall-Tau Results for - Dissolved Oxygen
Activity Type Statistical Trend Sample Count Years with Data Period of Record Median Result Value Tau Sen Intercept Sen Slope P
Field Significantly increasing trend 45505 33 1993 - 2025 5.81 0.179 5.36365 0.01113 0

Monthly average dissolved oxygen increased by 0.01 mg/L per year.

Map showing location of discrete water quality sampling locations within the boundaries of Biscayne Bay Aquatic Preserve. The bubble size on the maps above reflect the amount of data available at each sampling site.
Map showing location of discrete water quality sampling locations within the boundaries of Biscayne Bay Aquatic Preserve. The bubble size on the maps above reflect the amount of data available at each sampling site.

Dissolved Oxygen Saturation - Continuous

Scatter plot of monthly average dissolved oxygen saturation over time at continuously monitored program locations. Each location is analyzed separately, with significant (blue) or non-significant (magenta) trend lines shown for time series that included five or more years of observations.
Scatter plot of monthly average dissolved oxygen saturation over time at continuously monitored program locations. Each location is analyzed separately, with significant (blue) or non-significant (magenta) trend lines shown for time series that included five or more years of observations.
Seasonal Kendall-Tau Results - Dissolved Oxygen Saturation
Program Location Statistical Trend Sample Count Years with Data Period of Record Median Result Value Tau Sen Intercept Sen Slope P
BBBB14 No significant trend 209506 7 2019 - 2025 104.6 0.08 106.33 0.31 0.4397
BBCWA4 Insufficient data to calculate trend 112145 4 2022 - 2025 97.8 - - - -
BBJT71 No significant trend 208190 7 2019 - 2025 102.0 0.13 105.26 0.49 0.1852
BBLR03 No significant trend 177332 6 2020 - 2025 57.7 0.03 54.54 0.06 0.861
BBMRDW No significant trend 150198 5 2021 - 2025 62.5 -0.02 55.49 -0.07 0.937
BBMRRB Insufficient data to calculate trend 124795 4 2022 - 2025 96.1 - - - -
BBMRSC No significant trend 151340 5 2021 - 2025 29.3 0.21 29.12 1.84 0.1052

No detectable change in monthly average dissolved oxygen saturation was observed at five locations. There was insufficient data to fit a model for two locations.

Map showing location of dissolved oxygen saturation continuous water quality sampling locations within the boundaries of Biscayne Bay Aquatic Preserve. The bubble size on the maps above reflect the amount of data available at each sampling site.
Map showing location of dissolved oxygen saturation continuous water quality sampling locations within the boundaries of Biscayne Bay Aquatic Preserve. The bubble size on the maps above reflect the amount of data available at each sampling site.

Dissolved Oxygen Saturation - Discrete

Scatter plot of monthly average dissolved oxygen saturation over time. If the time series included ten or more years of discrete observations, a significant (blue) or non-significant (magenta) trend line is also shown. Only dissolved oxygen saturation values measured in the field (circles) are included in the plot.
Scatter plot of monthly average dissolved oxygen saturation over time. If the time series included ten or more years of discrete observations, a significant (blue) or non-significant (magenta) trend line is also shown. Only dissolved oxygen saturation values measured in the field (circles) are included in the plot.
Seasonal Kendall-Tau Results for - Dissolved Oxygen Saturation
Activity Type Statistical Trend Sample Count Years with Data Period of Record Median Result Value Tau Sen Intercept Sen Slope P
Field Significantly increasing trend 15093 16 1995 - 2025 88.7 0.38467 61.31281 0.9861 0

Monthly average dissolved oxygen saturation increased by 0.99% per year.

Map showing location of discrete water quality sampling locations within the boundaries of Biscayne Bay Aquatic Preserve. The bubble size on the maps above reflect the amount of data available at each sampling site.
Map showing location of discrete water quality sampling locations within the boundaries of Biscayne Bay Aquatic Preserve. The bubble size on the maps above reflect the amount of data available at each sampling site.

Salinity - Discrete

Scatter plot of monthly average salinity over time. If the time series included ten or more years of discrete observations, significant (blue) or non-significant (magenta) trend lines are also shown. Discrete salinity values derived from grab samples analyzed in the field (circles) or the laboratory (triangles) are both included in the plot.
Scatter plot of monthly average salinity over time. If the time series included ten or more years of discrete observations, significant (blue) or non-significant (magenta) trend lines are also shown. Discrete salinity values derived from grab samples analyzed in the field (circles) or the laboratory (triangles) are both included in the plot.
Seasonal Kendall-Tau Results for - Salinity
Activity Type Statistical Trend Sample Count Years with Data Period of Record Median Result Value Tau Sen Intercept Sen Slope P
All Significantly increasing trend 50529 33 1993 - 2025 31.4 0.089 27.16942 0.03703 0.013

Monthly average salinity increased by 0.04 ppt per year.

Map showing location of discrete water quality sampling locations within the boundaries of Biscayne Bay Aquatic Preserve. The bubble size on the maps above reflect the amount of data available at each sampling site.
Map showing location of discrete water quality sampling locations within the boundaries of Biscayne Bay Aquatic Preserve. The bubble size on the maps above reflect the amount of data available at each sampling site.

Salinity - Continuous

Scatter plot of monthly average salinity over time at continuously monitored program locations. Each location is analyzed separately, with significant (blue) or non-significant (magenta) trend lines shown for time series that included five or more years of observations.
Scatter plot of monthly average salinity over time at continuously monitored program locations. Each location is analyzed separately, with significant (blue) or non-significant (magenta) trend lines shown for time series that included five or more years of observations.
Seasonal Kendall-Tau Results - Salinity
Program Location Statistical Trend Sample Count Years with Data Period of Record Median Result Value Tau Sen Intercept Sen Slope P
BBBB14 No significant trend 199380 7 2019 - 2025 30.6 -0.01 30.94 -0.01 1
BBCWA4 Insufficient data to calculate trend 106537 4 2022 - 2025 33.6 - - - -
BBJT71 No significant trend 193275 7 2019 - 2025 31.0 -0.02 30.1 -0.03 0.8694
BBLR03 No significant trend 197528 7 2019 - 2025 18.0 0.02 14.29 0.02 0.9625
BBMRDW No significant trend 146988 5 2021 - 2025 10.9 -0.17 14.52 -0.34 0.2357
BBMRRB Insufficient data to calculate trend 124795 4 2022 - 2025 33.3 - - - -
BBMRSC No significant trend 153400 5 2021 - 2025 5.1 -0.13 7.17 -0.45 0.3159

No detectable change in monthly average salinity was observed at five locations. There was insufficient data to fit a model for two locations.

Map showing location of salinity continuous water quality sampling locations within the boundaries of Biscayne Bay Aquatic Preserve. The bubble size on the maps above reflect the amount of data available at each sampling site.
Map showing location of salinity continuous water quality sampling locations within the boundaries of Biscayne Bay Aquatic Preserve. The bubble size on the maps above reflect the amount of data available at each sampling site.

Water Temperature - Continuous

Scatter plot of monthly average water temperature over time at continuously monitored program locations. Each location is analyzed separately, with significant (blue) or non-significant (magenta) trend lines shown for time series that included five or more years of observations.
Scatter plot of monthly average water temperature over time at continuously monitored program locations. Each location is analyzed separately, with significant (blue) or non-significant (magenta) trend lines shown for time series that included five or more years of observations.
Seasonal Kendall-Tau Results - Water Temperature
Program Location Statistical Trend Sample Count Years with Data Period of Record Median Result Value Tau Sen Intercept Sen Slope P
BBBB14 No significant trend 209878 7 2019 - 2025 27.3 0.02 27.47 0 0.8915
BBCWA4 Insufficient data to calculate trend 113090 4 2022 - 2025 27.1 - - - -
BBJT71 No significant trend 208542 7 2019 - 2025 27.1 -0.03 27.22 -0.01 0.8737
BBLR03 No significant trend 206286 7 2019 - 2025 27.9 0.04 27.59 0.04 0.6721
BBMRDW No significant trend 150209 5 2021 - 2025 27.6 -0.03 27.32 0 1
BBMRRB Insufficient data to calculate trend 125603 4 2022 - 2025 27.3 - - - -
BBMRSC No significant trend 154183 5 2021 - 2025 27.3 -0.02 26.87 0 1

No detectable change in monthly average water temperature was observed at five locations. There was insufficient data to fit a model for two locations.

Map showing location of water temperature continuous water quality sampling locations within the boundaries of Biscayne Bay Aquatic Preserve. The bubble size on the maps above reflect the amount of data available at each sampling site.
Map showing location of water temperature continuous water quality sampling locations within the boundaries of Biscayne Bay Aquatic Preserve. The bubble size on the maps above reflect the amount of data available at each sampling site.

Water Temperature - Discrete

Scatter plot of monthly average water temperature over time. If the time series included ten or more years of discrete observations, a significant (blue) or non-significant (magenta) trend line is also shown. Only water temperature measurements taken in the field (circles) are included in the plot.
Scatter plot of monthly average water temperature over time. If the time series included ten or more years of discrete observations, a significant (blue) or non-significant (magenta) trend line is also shown. Only water temperature measurements taken in the field (circles) are included in the plot.
Seasonal Kendall-Tau Results for - Water Temperature
Activity Type Statistical Trend Sample Count Years with Data Period of Record Median Result Value Tau Sen Intercept Sen Slope P
Field Significantly increasing trend 50728 33 1993 - 2025 26.63 0.22766 25.50481 0.03897 0

Monthly average water temperature increased by 0.04°C per year.

Map showing location of discrete water quality sampling locations within the boundaries of Biscayne Bay Aquatic Preserve. The bubble size on the maps above reflect the amount of data available at each sampling site.
Map showing location of discrete water quality sampling locations within the boundaries of Biscayne Bay Aquatic Preserve. The bubble size on the maps above reflect the amount of data available at each sampling site.

pH - Continuous

Scatter plot of monthly average pH over time at continuously monitored program locations. Each location is analyzed separately, with significant (blue) or non-significant (magenta) trend lines shown for time series that included five or more years of observations.
Scatter plot of monthly average pH over time at continuously monitored program locations. Each location is analyzed separately, with significant (blue) or non-significant (magenta) trend lines shown for time series that included five or more years of observations.
Seasonal Kendall-Tau Results - pH
Program Location Statistical Trend Sample Count Years with Data Period of Record Median Result Value Tau Sen Intercept Sen Slope P
BBBB14 No significant trend 205693 7 2019 - 2025 8.1 0.1 8.06 0.01 0.3398
BBCWA4 Insufficient data to calculate trend 112102 4 2022 - 2025 8.0 - - - -
BBJT71 No significant trend 195449 7 2019 - 2025 8.1 -0.07 8.08 0 0.5078
BBLR03 No significant trend 195530 7 2019 - 2025 7.6 -0.05 7.66 0 0.6665
BBMRDW No significant trend 145249 5 2021 - 2025 7.6 -0.03 7.57 0 0.9336
BBMRRB Insufficient data to calculate trend 124839 4 2022 - 2025 8.0 - - - -
BBMRSC No significant trend 150527 5 2021 - 2025 7.4 0.03 7.47 0 0.6997

No detectable change in monthly average pH was observed at five locations. There was insufficient data to fit a model for two locations.

Map showing location of ph continuous water quality sampling locations within the boundaries of Biscayne Bay Aquatic Preserve. The bubble size on the maps above reflect the amount of data available at each sampling site.
Map showing location of ph continuous water quality sampling locations within the boundaries of Biscayne Bay Aquatic Preserve. The bubble size on the maps above reflect the amount of data available at each sampling site.

pH - Discrete

Scatter plot of monthly average pH over time. If the time series included ten or more years of discrete observations, a significant (blue) or non-significant (magenta) trend line is also shown. Only pH values measured in the field (circles) are included in the plot.
Scatter plot of monthly average pH over time. If the time series included ten or more years of discrete observations, a significant (blue) or non-significant (magenta) trend line is also shown. Only pH values measured in the field (circles) are included in the plot.
Seasonal Kendall-Tau Results for - pH
Activity Type Statistical Trend Sample Count Years with Data Period of Record Median Result Value Tau Sen Intercept Sen Slope P
Field Significantly decreasing trend 43873 32 1994 - 2025 7.98 -0.10437 7.94675 -0.00151 0.0038

Monthly average pH decreased by less than 0.01 pH units per year.

Map showing location of discrete water quality sampling locations within the boundaries of Biscayne Bay Aquatic Preserve. The bubble size on the maps above reflect the amount of data available at each sampling site.
Map showing location of discrete water quality sampling locations within the boundaries of Biscayne Bay Aquatic Preserve. The bubble size on the maps above reflect the amount of data available at each sampling site.

Specific Conductivity - Continuous

Seasonal Kendall-Tau Results - Specific Conductivity
Program Location Statistical Trend Sample Count Years with Data Period of Record Median Result Value Tau Sen Intercept Sen Slope P
BBBB14 No significant trend 199381 7 2019 - 2025 47.11 -0.02 47.54 -0.01 0.854
BBCWA4 Insufficient data to calculate trend 106556 4 2022 - 2025 51.22 - - - -
BBJT71 No significant trend 193275 7 2019 - 2025 47.63 -0.01 46.51 -0.05 0.9563
BBLR03 No significant trend 199348 7 2019 - 2025 28.44 0.01 22.63 0.02 1
BBMRDW No significant trend 146990 5 2021 - 2025 18.45 -0.17 23.94 -0.56 0.2357
BBMRRB Insufficient data to calculate trend 124795 4 2022 - 2025 50.80 - - - -
BBMRSC No significant trend 154166 5 2021 - 2025 8.98 -0.09 12.32 -0.71 0.4875
Map showing location of specific conductivity continuous water quality sampling locations within the boundaries of Biscayne Bay Aquatic Preserve. The bubble size on the maps above reflect the amount of data available at each sampling site.
Map showing location of specific conductivity continuous water quality sampling locations within the boundaries of Biscayne Bay Aquatic Preserve. The bubble size on the maps above reflect the amount of data available at each sampling site.

Water Clarity

Turbidity - Continuous

Scatter plot of monthly average turbidity over time at continuously monitored program locations. Each location is analyzed separately, with significant (blue) or non-significant (magenta) trend lines shown for time series that included five or more years of observations.
Scatter plot of monthly average turbidity over time at continuously monitored program locations. Each location is analyzed separately, with significant (blue) or non-significant (magenta) trend lines shown for time series that included five or more years of observations.
Seasonal Kendall-Tau Results - Turbidity
Program Location Statistical Trend Sample Count Years with Data Period of Record Median Result Value Tau Sen Intercept Sen Slope P
BBBB14 Significantly decreasing trend 195719 7 2019 - 2025 2 -0.22 2.32 -0.14 0.0184
BBCWA4 Insufficient data to calculate trend 109259 4 2022 - 2025 3 - - - -
BBJT71 Significantly decreasing trend 201128 7 2019 - 2025 3 -0.46 3.94 -0.4 0
BBLR03 No significant trend 202449 7 2019 - 2025 3 -0.01 3.16 -0.02 0.8108
BBMRDW Significantly increasing trend 147146 5 2021 - 2025 2 0.35 2.04 0.19 0.0091
BBMRRB Insufficient data to calculate trend 123415 4 2022 - 2025 3 - - - -
BBMRSC Significantly increasing trend 140544 5 2021 - 2025 2 0.41 1.92 0.29 0.002

At two program locations, monthly average turbidity increased by 0.19 NTU per year at one site and by 0.29 NTU per year at the other. At two program locations, monthly average turbidity decreased by 0.14 NTU per year at one site and by 0.4 NTU per year at the other. No detectable change in monthly average turbidity was observed at one location. There was insufficient data to fit a model for two locations.

Map showing location of turbidity continuous water quality sampling locations within the boundaries of Biscayne Bay Aquatic Preserve. The bubble size on the maps above reflect the amount of data available at each sampling site.
Map showing location of turbidity continuous water quality sampling locations within the boundaries of Biscayne Bay Aquatic Preserve. The bubble size on the maps above reflect the amount of data available at each sampling site.

Turbidity - Discrete

Scatter plot of monthly average turbidity over time. If the time series included ten or more years of discrete observations, a significant (blue) or non-significant (magenta) trend line is also shown. Only turbidity values measured in the laboratory (triangles) are included in the plot.
Scatter plot of monthly average turbidity over time. If the time series included ten or more years of discrete observations, a significant (blue) or non-significant (magenta) trend line is also shown. Only turbidity values measured in the laboratory (triangles) are included in the plot.
Seasonal Kendall-Tau Results for - Turbidity
Activity Type Statistical Trend Sample Count Years with Data Period of Record Median Result Value Tau Sen Intercept Sen Slope P
Lab No significant trend 13958 33 1993 - 2025 0.9 0.03996 1.01324 0.00331 0.2562

Turbidity showed no detectable trend between 1993 and 2025.

Map showing location of discrete water quality sampling locations within the boundaries of Biscayne Bay Aquatic Preserve. The bubble size on the maps above reflect the amount of data available at each sampling site.
Map showing location of discrete water quality sampling locations within the boundaries of Biscayne Bay Aquatic Preserve. The bubble size on the maps above reflect the amount of data available at each sampling site.

Total Suspended Solids - Discrete

Scatter plot of monthly average total suspended solids (TSS) over time. If the time series included ten or more years of discrete observations, a significant (blue) or non-significant (magenta) trend line is also shown. Only TSS values obtained from laboratory analyses (triangles) are included in the plot.
Scatter plot of monthly average total suspended solids (TSS) over time. If the time series included ten or more years of discrete observations, a significant (blue) or non-significant (magenta) trend line is also shown. Only TSS values obtained from laboratory analyses (triangles) are included in the plot.
Seasonal Kendall-Tau Results for - Total Suspended Solids
Activity Type Statistical Trend Sample Count Years with Data Period of Record Median Result Value Tau Sen Intercept Sen Slope P
Lab No significant trend 2900 31 1994 - 2025 5 -0.14792 12.91189 -0.05705 0.1201

Total suspended solids showed no detectable trend between 1994 and 2025.

Map showing location of discrete water quality sampling locations within the boundaries of Biscayne Bay Aquatic Preserve. The bubble size on the maps above reflect the amount of data available at each sampling site.
Map showing location of discrete water quality sampling locations within the boundaries of Biscayne Bay Aquatic Preserve. The bubble size on the maps above reflect the amount of data available at each sampling site.

Chlorophyll a, Uncorrected for Pheophytin - Discrete

Scatter plot of monthly average levels of chlorophyll a, uncorrected for pheophytin, over time. If the time series included ten or more years of discrete observations, a significant (blue) or non-significant (magenta) trend line is also shown. Only laboratory-analyzed chlorophyll a (triangles) is included in the plot.
Scatter plot of monthly average levels of chlorophyll a, uncorrected for pheophytin, over time. If the time series included ten or more years of discrete observations, a significant (blue) or non-significant (magenta) trend line is also shown. Only laboratory-analyzed chlorophyll a (triangles) is included in the plot.
Seasonal Kendall-Tau Results for - Chlorophyll a, Uncorrected for Pheophytin
Activity Type Statistical Trend Sample Count Years with Data Period of Record Median Result Value Tau Sen Intercept Sen Slope P
Lab Significantly increasing trend 2517 30 1993 - 2025 0.70231 0.37392 0.37401 0.04208 0

Monthly average chlorophyll a, uncorrected for pheophytin, increased by 0.04 µg/L per year, indicating a decrease in water clarity.

Map showing location of discrete water quality sampling locations within the boundaries of Biscayne Bay Aquatic Preserve. The bubble size on the maps above reflect the amount of data available at each sampling site.
Map showing location of discrete water quality sampling locations within the boundaries of Biscayne Bay Aquatic Preserve. The bubble size on the maps above reflect the amount of data available at each sampling site.

Chlorophyll a, Corrected for Pheophytin - Discrete

Scatter plot of monthly average levels of chlorophyll a, corrected for pheophytin, over time. If the time series included ten or more years of discrete observations, a significant (blue) or non-significant (magenta) trend line is also shown. Only laboratory-analyzed chlorophyll a (triangles) is included in the plot.
Scatter plot of monthly average levels of chlorophyll a, corrected for pheophytin, over time. If the time series included ten or more years of discrete observations, a significant (blue) or non-significant (magenta) trend line is also shown. Only laboratory-analyzed chlorophyll a (triangles) is included in the plot.
Seasonal Kendall-Tau Results for - Chlorophyll a, Corrected for Pheophytin
Activity Type Statistical Trend Sample Count Years with Data Period of Record Median Result Value Tau Sen Intercept Sen Slope P
Lab No significant trend 492 16 2002 - 2023 1.4 -0.20161 4.61564 -0.14393 0.0505

Chlorophyll a, corrected for pheophytin, showed no detectable trend between 2002 and 2023.

Map showing location of discrete water quality sampling locations within the boundaries of Biscayne Bay Aquatic Preserve. The bubble size on the maps above reflect the amount of data available at each sampling site.
Map showing location of discrete water quality sampling locations within the boundaries of Biscayne Bay Aquatic Preserve. The bubble size on the maps above reflect the amount of data available at each sampling site.

Secchi Depth - Discrete

Scatter plot of monthly average Secchi depth over time. If the time series included ten or more years of discrete observations, a significant (blue) or non-significant (magenta) trend line is also shown. Secchi depth is only measured in the field (circles).
Scatter plot of monthly average Secchi depth over time. If the time series included ten or more years of discrete observations, a significant (blue) or non-significant (magenta) trend line is also shown. Secchi depth is only measured in the field (circles).
Seasonal Kendall-Tau Results for - Secchi Depth
Activity Type Statistical Trend Sample Count Years with Data Period of Record Median Result Value Tau Sen Intercept Sen Slope P
Field No significant trend 694 20 2000 - 2022 -1.52402 0.09752 -1.66734 0.00751 0.5251

Secchi depth showed no detectable trend between 2000 and 2022.

Map showing location of discrete water quality sampling locations within the boundaries of Biscayne Bay Aquatic Preserve. The bubble size on the maps above reflect the amount of data available at each sampling site.
Map showing location of discrete water quality sampling locations within the boundaries of Biscayne Bay Aquatic Preserve. The bubble size on the maps above reflect the amount of data available at each sampling site.

Colored Dissolved Organic Matter - Discrete

Scatter plot of monthly average colored dissolved organic matter (CDOM) over time. If the time series included ten or more years of discrete observations, a significant (blue) or non-significant (magenta) trend line is also shown. Only laboratory-analyzed CDOM (triangles) is included in the plot.
Scatter plot of monthly average colored dissolved organic matter (CDOM) over time. If the time series included ten or more years of discrete observations, a significant (blue) or non-significant (magenta) trend line is also shown. Only laboratory-analyzed CDOM (triangles) is included in the plot.
Seasonal Kendall-Tau Results for - Colored Dissolved Organic Matter
Activity Type Statistical Trend Sample Count Years with Data Period of Record Median Result Value Tau Sen Intercept Sen Slope P
Lab Insufficient data to calculate trend 3 3 2020 - 2022 22 - - - -

There was insufficient data to fit a model for colored dissolved organic matter.

Map showing location of discrete water quality sampling locations within the boundaries of Biscayne Bay Aquatic Preserve. The bubble size on the maps above reflect the amount of data available at each sampling site.
Map showing location of discrete water quality sampling locations within the boundaries of Biscayne Bay Aquatic Preserve. The bubble size on the maps above reflect the amount of data available at each sampling site.