Location Latitude Longitude Depth Season Date Time ISO_DateTime_UTC Tidal_Stage Temperature Salinity pH DO NO3 NO2 NH4 DIP DIC DOC DON H2S 37.248884N 76.505324W 37.248884 -76.505324 0 Spring 4/9/18 nd nd low tide 12.71 18.68 7.8 11.97 0.11 0.03 0.48 0.16 1.63 202.7 nd 0 37.248884N 76.505324W 37.248884 -76.505324 10 Spring 4/9/18 nd nd low tide 12.85 15.18 7.59 10.96 19.31 0.15 4.57 0.66 1.9 273.06 nd 0 37.248884N 76.505324W 37.248884 -76.505324 20 Spring 4/9/18 nd nd low tide 11.21 13.65 7.51 11.46 14.04 0.1 10.25 1.02 2.26 271.19 nd 0 37.248884N 76.505324W 37.248884 -76.505324 30 Spring 4/9/18 nd nd low tide 10.6 17.37 7.39 11.72 7.21 0.01 0.48 0.86 1.74 210.46 nd 0 37.248884N 76.505324W 37.248884 -76.505324 40 Spring 4/9/18 nd nd low tide 10.66 17.17 6.73 9.55 16.08 0.04 0.29 0.91 1.79 263.58 28.78 0 37.248884N 76.505324W 37.248884 -76.505324 50 Spring 4/9/18 nd nd low tide 10.13 18.72 6.91 10.19 8.99 0.05 0.26 0.85 1.73 254.23 19.62 0 37.248884N 76.505324W 37.248884 -76.505324 60 Spring 4/9/18 nd nd low tide 10.36 16.16 6.88 9.32 35.77 0.02 0.41 1.25 1.88 240.79 48.04 0 37.248884N 76.505324W 37.248884 -76.505324 70 Spring 4/9/18 12:45 2018-04-09T16:45:00Z low tide 10.34 12.46 7.01 9.1 77.61 0.6 0.49 1.91 2.36 316.69 104.36 0 37.248884N 76.505324W 37.248884 -76.505324 80 Spring 4/9/18 nd nd low tide 10.21 11.6 7.02 2.39 33.96 0.3 5.28 1.88 2.77 388.65 58.46 0 37.248884N 76.505324W 37.248884 -76.505324 90 Spring 4/9/18 nd nd low tide 10.58 5.2 7.04 1.83 0.08 0.08 50.07 4.56 3.42 832.2 96.78 0 37.248884N 76.505324W 37.248884 -76.505324 100 Spring 4/9/18 nd nd low tide 10.68 5.23 6.98 1.89 0.08 0.03 76.52 5.31 3.56 612.61 100.86 0.55 37.248884N 76.505324W 37.248884 -76.505324 110 Spring 4/9/18 nd nd low tide 10.96 5.86 6.91 1.85 0.06 0.07 54.71 4.91 3.43 639.61 79.47 0 37.248884N 76.505324W 37.248884 -76.505324 150 Spring 4/9/18 11:50 2018-04-09T15:50:00Z low tide 10.97 5.13 6.81 1.3 0.06 0.04 71.34 6.92 3.52 613.65 94.33 1.6 37.248884N 76.505324W 37.248884 -76.505324 175 Spring 4/9/18 nd nd low tide 11.22 4.7 6.77 1.3 0 0.01 64.07 7.09 3.49 592.94 85.78 37.38 37.248884N 76.505324W 37.248884 -76.505324 200 Spring 4/9/18 nd nd low tide 11.5 4.86 6.72 1.63 0.01 0.04 71.95 7.77 3.9 509.35 93.61 165.65 37.248884N 76.505324W 37.248884 -76.505324 250 Spring 4/9/18 nd nd low tide 11.72 2.13 7.3 1.56 0 0.2 193.73 13.51 5.81 253.19 193.93 538.07 37.248884N 76.505324W 37.248884 -76.505324 300 Spring 4/9/18 10:30 2018-04-09T14:30:00Z low tide 11.67 2.75 6.86 3.12 0.01 0.13 170.74 15.62 5.98 455.06 177.57 615.47 37.248884N 76.505324W 37.248884 -76.505324 0 Summer 7/9/18 14:47 2018-07-09T18:47:00Z low tide 28.65 12.58 8.35 13.18 0.03 0.01 0.55 0.79 1.15 374.49 12.33 0.64 37.248884N 76.505324W 37.248884 -76.505324 10 Summer 7/9/18 16:09 2018-07-09T20:09:00Z low tide 28.83 12.12 7.56 6.44 2.23 0.09 0.73 1.55 1.16 358.84 14.02 0.99 37.248884N 76.505324W 37.248884 -76.505324 20 Summer 7/9/18 15:46 2018-07-09T19:46:00Z low tide 26.97 12.14 7.56 4.01 23.53 0.04 0.9 0.95 1.3 361.56 25.34 0.31 37.248884N 76.505324W 37.248884 -76.505324 30 Summer 7/9/18 15:23 2018-07-09T19:23:00Z low tide 26.3 11.46 7.01 6.53 19.17 0.01 0.64 2.19 1.44 278.55 17.38 0.23 37.248884N 76.505324W 37.248884 -76.505324 40 Summer 7/9/18 14:50 2018-07-09T18:50:00Z low tide 25.61 12.03 6.7 3.21 40.64 0.02 0.76 2.03 1.36 273.93 40.93 0.07 37.248884N 76.505324W 37.248884 -76.505324 50 Summer 7/9/18 nd nd low tide 25.59 12.54 6.74 4.18 41.41 0.01 0.71 1.86 1.4 277.74 27.85 -0.21 37.248884N 76.505324W 37.248884 -76.505324 60 Summer 7/9/18 14:05 2018-07-09T18:05:00Z low tide 25.67 10.1 6.8 1.27 62.93 0.36 2.28 1.98 1.51 311.35 47.03 0 37.248884N 76.505324W 37.248884 -76.505324 70 Summer 7/9/18 13:45 2018-07-09T17:45:00Z low tide 25.53 7.61 7.02 0.2 69.05 1.7 2.48 2.41 2.03 441.98 20.91 -0.1 37.248884N 76.505324W 37.248884 -76.505324 80 Summer 7/9/18 13:30 2018-07-09T17:30:00Z low tide 25.21 6.01 7.18 -0.01 19.05 1.09 21.34 4.95 2.94 571.4 13.24 29.3 37.248884N 76.505324W 37.248884 -76.505324 90 Summer 7/9/18 13:15 2018-07-09T17:15:00Z low tide 25.2 2.87 7.04 0 0.1 0.08 83.71 8.1 3.62 708.29 17.61 23.36 37.248884N 76.505324W 37.248884 -76.505324 100 Summer 7/9/18 12:56 2018-07-09T16:56:00Z low tide 24.68 3.21 7.12 0.04 0.03 0.06 92.62 10.26 3.69 533.84 20.49 34.94 37.248884N 76.505324W 37.248884 -76.505324 110 Summer 7/9/18 12:32 2018-07-09T16:32:00Z low tide 25.05 2.9 7.07 -0.09 0.01 0.07 76.89 8.68 3.81 784.36 20.24 23.57 37.248884N 76.505324W 37.248884 -76.505324 150 Summer 7/9/18 12:21 2018-07-09T16:21:00Z low tide 24.07 3.54 6.95 0.09 0.02 37.05 59.91 8.42 3.43 485.39 16.11 138.82 37.248884N 76.505324W 37.248884 -76.505324 175 Summer 7/9/18 11:55 2018-07-09T15:55:00Z low tide 23.39 2.89 6.9 0.21 0.14 0.07 42.95 7.32 3.08 742.99 12.21 138.73 37.248884N 76.505324W 37.248884 -76.505324 200 Summer 7/9/18 11:40 2018-07-09T15:40:00Z low tide 22.66 2.7 6.78 -0.71 0.05 0.09 144.46 12.78 5.76 466.89 24.24 2323.98 37.248884N 76.505324W 37.248884 -76.505324 250 Summer 7/9/18 11:25 2018-07-09T15:25:00Z low tide 21.96 2.15 7.2 -0.42 0.07 0.18 198.29 12.74 5.59 208.47 38.33 2757.98 37.248884N 76.505324W 37.248884 -76.505324 300 Summer 7/9/18 11:10 2018-07-09T15:10:00Z low tide 22.81 2.63 6.8 -0.17 0.09 0.13 185.01 15.76 6.01 502.68 33.9 3513.8 37.248884N 76.505324W 37.248884 -76.505324 0 Fall 10/2/18 13:13 2018-10-02T17:13:00Z low tide 25.59 13.32 7.84 9.02 17.09 10.16 0.8 1.14 1.4 295.29 48.95 0 37.248884N 76.505324W 37.248884 -76.505324 10 Fall 10/2/18 13:38 2018-10-02T17:38:00Z low tide 25.69 13.34 7.81 8.26 10.6 3.15 1.21 1.64 1.43 330.01 31.4 0 37.248884N 76.505324W 37.248884 -76.505324 20 Fall 10/2/18 12:59 2018-10-02T16:59:00Z low tide 24.91 13.41 7.39 6.62 14.68 0.18 0.65 2.69 1.45 297.67 33.81 0 37.248884N 76.505324W 37.248884 -76.505324 30 Fall 10/2/18 12:49 2018-10-02T16:49:00Z low tide 24.08 13.54 7.02 5.65 17.96 0 0.55 2.01 1.65 236.49 34.84 0 37.248884N 76.505324W 37.248884 -76.505324 40 Fall 10/2/18 12:34 2018-10-02T16:34:00Z low tide 23.61 9.59 6.71 4.66 44.09 0.02 0.61 2.92 2.37 603.29 66.76 0 37.248884N 76.505324W 37.248884 -76.505324 50 Fall 10/2/18 12:23 2018-10-02T16:23:00Z low tide 23.53 10.26 6.84 3.61 36.52 0.01 0.69 3.28 2.47 439.21 54.94 0 37.248884N 76.505324W 37.248884 -76.505324 60 Fall 10/2/18 11:31 2018-10-02T15:31:00Z low tide 23.3 10.2 6.89 4.5 43.55 0.19 0.61 2.23 2.28 392.87 60.95 0 37.248884N 76.505324W 37.248884 -76.505324 70 Fall 10/2/18 10:21 2018-10-02T14:21:00Z low tide 23.46 10.3 6.76 1.07 34.43 0.48 1.75 2.28 2.6 408.27 59.55 0 37.248884N 76.505324W 37.248884 -76.505324 80 Fall 10/2/18 11:10 2018-10-02T15:10:00Z low tide 23.54 6.97 6.98 0.36 6.22 0.29 44.98 8.86 3.74 809.09 76.44 11.49 37.248884N 76.505324W 37.248884 -76.505324 90 Fall 10/2/18 11:58 2018-10-02T15:58:00Z low tide 23.48 3.06 7 0.36 0.04 0.09 107.18 9.4 4.77 924.73 84.61 11.79 37.248884N 76.505324W 37.248884 -76.505324 100 Fall 10/2/18 10:47 2018-10-02T14:47:00Z low tide 23.25 3.39 7.04 1.2 0.06 0.09 99.56 11.11 4.26 773.39 119.75 41.81 37.248884N 76.505324W 37.248884 -76.505324 110 Fall 10/2/18 10:36 2018-10-02T14:36:00Z low tide 23.32 3.02 7.02 0.81 0.04 0.07 88.12 10.9 4.82 716.83 100.16 101.95 37.248884N 76.505324W 37.248884 -76.505324 150 Fall 10/2/18 10:23 2018-10-02T14:23:00Z low tide 23.42 3.19 6.93 0.46 0.05 0.2 73.56 10.09 4.25 686.03 73.25 455.28 37.248884N 76.505324W 37.248884 -76.505324 175 Fall 10/2/18 10:00 2018-10-02T14:00:00Z low tide 23.33 2.79 6.84 0.46 0.05 0.23 51.59 8.67 4.99 881.05 73.08 292.31 37.248884N 76.505324W 37.248884 -76.505324 200 Fall 10/2/18 9:49 2018-10-02T13:49:00Z low tide 23.24 3.86 6.91 0.97 0.05 0.07 157.35 14.41 5.98 541.97 121.11 1105.9 37.248884N 76.505324W 37.248884 -76.505324 250 Fall 10/2/18 9:35 2018-10-02T13:35:00Z low tide 22.62 2.32 7.27 0.86 0.07 0.16 218.16 11.74 5.95 251.05 162.64 1326.46 37.248884N 76.505324W 37.248884 -76.505324 300 Fall 10/2/18 9:24 2018-10-02T13:24:00Z low tide 23.14 2.51 6.86 0.74 0.06 0.09 197.15 15.09 6.03 228.09 147.83 1195.94 37.248884N 76.505324W 37.248884 -76.505324 0 Winter 1/15/19 1:41 2018-01-15T06:41:00Z low tide 6.56 9.69 7.29 12.6 18.13 0.19 2.85 0.24 1.15 298.13 32.19 0 37.248884N 76.505324W 37.248884 -76.505324 10 Winter 1/15/19 2:41 2018-01-15T07:41:00Z low tide 5.94 9.92 7.27 12.28 18.87 0.09 1.83 0.34 1.18 267.94 33.81 0 37.248884N 76.505324W 37.248884 -76.505324 20 Winter 1/15/19 2:15 2018-01-15T07:15:00Z low tide 5.26 9.48 7.05 11.08 25.56 0 1.26 0.65 1.3 276.95 36.52 0 37.248884N 76.505324W 37.248884 -76.505324 30 Winter 1/15/19 1:36 2018-01-15T06:36:00Z low tide 5.93 10.21 7.17 11.45 25.1 -0.01 0.46 0.73 1.27 242.47 32.21 0 37.248884N 76.505324W 37.248884 -76.505324 40 Winter 1/15/19 8:37 2018-01-15T13:37:00Z low tide 5.85 8.02 6.79 10.6 26.4 0.06 0.31 1.43 1.4 542.39 44.82 0 37.248884N 76.505324W 37.248884 -76.505324 50 Winter 1/15/19 8:53 2018-01-15T13:53:00Z low tide 3.91 9.86 6.95 11.97 24.46 0 0.2 1.19 1.25 358.95 39.49 0 37.248884N 76.505324W 37.248884 -76.505324 60 Winter 1/15/19 9:05 2018-01-15T14:05:00Z low tide 4.02 6 7.17 7.81 21.92 0.17 0.55 1.84 1.47 1088.29 56.15 0 37.248884N 76.505324W 37.248884 -76.505324 70 Winter 1/15/19 9:17 2018-01-15T14:17:00Z low tide 6.85 2.96 7.23 2.88 12.28 0.2 2.97 2.61 2.8 1191.18 52.05 0 37.248884N 76.505324W 37.248884 -76.505324 80 Winter 1/15/19 9:26 2018-01-15T14:26:00Z low tide 7.1 2.97 7.15 0.98 3.83 0.23 20.24 5.31 3.89 1482.52 58.39 0 37.248884N 76.505324W 37.248884 -76.505324 90 Winter 1/15/19 9:37 2018-01-15T14:37:00Z low tide 6.66 nd 6.9 4.38 0.06 0.18 54.18 6.68 4.44 1308.08 41.01 0 37.248884N 76.505324W 37.248884 -76.505324 100 Winter 1/15/19 9:55 2018-01-15T14:55:00Z low tide 7.36 3.15 7.19 2.38 0.02 0.12 55.87 9.38 3.86 1361.6 83.99 6.39 37.248884N 76.505324W 37.248884 -76.505324 110 Winter 1/15/19 10:05 2018-01-15T15:05:00Z low tide 7.78 2.21 7.16 1.07 0.02 0.18 54.98 7.63 4.44 1541.18 86.13 2.85 37.248884N 76.505324W 37.248884 -76.505324 150 Winter 1/15/19 10:19 2018-01-15T15:19:00Z low tide 9.02 2.42 7.88 0.86 0.04 0.1 55.39 9.52 4.3 1018.61 75.91 64.22 37.248884N 76.505324W 37.248884 -76.505324 175 Winter 1/15/19 11:03 2018-01-15T16:03:00Z low tide 10.17 2.18 6.9 1.15 0.03 0.17 38.96 8.3 4.05 1409.11 71.85 18.72 37.248884N 76.505324W 37.248884 -76.505324 200 Winter 1/15/19 11:12 2018-01-15T16:12:00Z low tide 10.83 2.65 6.87 0.64 0.11 0.26 164.38 14.83 5.77 511.48 121.37 1069.15 37.248884N 76.505324W 37.248884 -76.505324 250 Winter 1/15/19 11:21 2018-01-15T16:21:00Z low tide 11.45 2.63 7.13 0.57 0.1 0.16 238.55 11.35 6.09 298.13 193.32 1451.32 37.248884N 76.505324W 37.248884 -76.505324 300 Winter 1/15/19 11:29 2018-01-15T16:29:00Z low tide 10.86 2.57 6.94 0.46 0.13 0.11 188.15 15.09 5.93 319.45 161.22 1175.74