Surface Mapping

​Surface chlorophyll data were collected on June 14, 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 Seekonk River, Upper Providence River Channel, and Pawtuxet River areas and as fair in the Edgewood Shoals and Southern Providence River areas. Overall, chlorophyll ranged between 0.98 and 15.51 µg/L with an average of 5.09 µg/L. The chlorophyll concentrations from this date are presented in the map below using Inverse Distance Weighting (IDW) interpolation.

Surface chlorophyll data were collected on June 7, 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 all areas surveyed. Overall, chlorophyll ranged between 0.35 and 3.45 µg/L with an average of 1.90 µg/L. The chlorophyll concentrations from this date are presented in the map below using Inverse Distance Weighting (IDW) interpolation.

​Surface chlorophyll data were collected on May 31, 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 Southern Providence River area and fair in all the other areas surveyed. Overall, chlorophyll ranged between 3.01 and 16.90 µg/L with an average of 7.96 µg/L. The chlorophyll concentrations from this date are presented in the map below using Inverse Distance Weighting (IDW) interpolation.

​Surface chlorophyll data were collected on May 24, 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 Seekonk River area and fair in all the other areas surveyed. Overall, chlorophyll ranged between 1.13 and 23.93 µg/L with an average of 8.84 µg/L. The chlorophyll concentrations from this date are presented in the map below using Inverse Distance Weighting (IDW) interpolation.

​Surface chlorophyll data were collected on May 18, 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 1.79 and 7.20 µg/L with an average of 3.29 µg/L. The chlorophyll concentrations from this date are presented in the map below using Inverse Distance Weighting (IDW) interpolation.

​Surface chlorophyll data were collected on May 10, 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 0.66 and 6.74 µg/L with an average of 1.61 µg/L. The chlorophyll concentrations from this date are presented in the map below using Inverse Distance Weighting (IDW) interpolation.

​Surface chlorophyll data were collected on May 3, 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 1.39 and 3.08 µg/L with an average of 2.14 µg/L. The chlorophyll concentrations from this date are presented in the map below using Inverse Distance Weighting (IDW) interpolation.

Surface chlorophyll data were collected on April 26, 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 fair in the Edgewood Shoals area and good in the other areas surveyed. Overall, chlorophyll ranged between 0.79 and 11.19 µg/L with an average of 2.60 µg/L. The chlorophyll concentrations from this date are presented in the map below using Inverse Distance Weighting (IDW) interpolation.

Surface chlorophyll data were collected on April 19, 2023 while the R/V Monitor was underway collecting nutrient samples in the Seekonk River, Upper Providence River, and Edgewood Shoals areas (chlorophyll data were not collected for the Pawtuxet River or Southern Providence River areas due to data logging issues). The average chlorophyll concentrations were categorized good in the areas surveyed. Overall, chlorophyll ranged between 0.00 and 9.34 µg/L with an average of 3.20 µg/L. The chlorophyll concentrations from this date are presented in the map below using Inverse Distance Weighting (IDW) interpolation.

​Surface chlorophyll data were collected on April 13, 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 0.44 and 81.81 µg/L with an average of 1.76 µg/L. The chlorophyll concentrations from this date are presented in the map below using Inverse Distance Weighting (IDW) interpolation