Surface Mapping

April 2-8, 2023

Surface chlorophyll data were collected on April 5, 2023 while the R/V Monitor was underway collecting nutrient samples in the Providence and Seekonk River estuaries. The average chlorophyll concentrations were categorized as good in the areas surveyed. Overall, chlorophyll ranged between 0.80 and 7.87 µg/L with an average of 2.28 µg/L. The chlorophyll concentrations from this date are presented in the map below using Inverse Distance Weighting (IDW) interpolation.

March 26-April 1, 2023

Surface chlorophyll data were collected on March 29, 2023 while the R/V Monitor was underway collecting bacteria samples in the Providence and Seekonk River estuaries. The average chlorophyll concentrations were categorized as good in the areas surveyed. Overall, chlorophyll ranged between 0.63 and 8.23 µg/L with an average of 1.43 µg/L. The chlorophyll concentrations from this date are presented in the map below using Inverse Distance Weighting (IDW) interpolation.

March 19-25, 2023

Surface chlorophyll data were collected on March 22, 2023 while the R/V Monitor was underway collecting nutrient samples in the Providence and Seekonk River estuaries. The average chlorophyll concentrations were categorized as fair in the Seekonk River and good in the other areas surveyed. Overall, chlorophyll ranged between 0.89 and 43.56 µg/L with an average of 2.77 µg/L. The chlorophyll concentrations from this date are presented in the map below using Inverse Distance Weighting (IDW) interpolation.

March 12-18, 2023

​Surface chlorophyll data were collected on March 16, 2023 while the R/V Monitor was underway taking benthic video footage in the Providence and Seekonk River estuaries. The average chlorophyll concentrations were categorized as good in the areas surveyed. Overall, chlorophyll ranged between 0.69 and 12.51 µg/L with an average of 1.63 µg/L. The chlorophyll concentrations from this date are presented in the map below using Inverse Distance Weighting (IDW) interpolation.

February 19-25, 2023

​Surface chlorophyll data were collected on February 22, 2023 while the R/V Monitor was underway collecting nutrient samples in the Providence River estuary. The average chlorophyll concentrations were categorized as good in the areas surveyed. Overall, chlorophyll ranged between 0.54 and 5.19 µg/L with an average of 1.95 µg/L. The chlorophyll concentrations from this date are presented in the map below using Inverse Distance Weighting (IDW) interpolation.

January 8-14, 2023

​Surface chlorophyll data were collected on January 10, 2023 while the R/V Monitor was underway collecting nutrient samples in the Providence River estuary. The average chlorophyll concentrations were categorized as good in the areas surveyed. Overall, chlorophyll ranged between 0.28 and 2.47 µg/L with an average of 0.83 µg/L. The chlorophyll data from this date are presented in the map below using Inverse Distance Weighting (IDW) interpolation.

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