Station FFFC1 - First Mallard, San Francisco Bay Reserve, CA
Owned and maintained by National Estuarine Research Reserve System
NERRS Water Quality Station
38.195 N 122.033 W (38°11'42" N 122°1'58" W)
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(24 hours for tsunami stations)
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These oceanographic data are displayed in rounded times. Click on the graph icon in the table below to see a time series plot of the last five days of that observation. | |
| Depth (DEPTH): | 6.9 ft |
 Ocean Temperature (OTMP): | 48.38 °F |
| Conductivity (COND): | 13.05 mS/cm |
| Salinity (SAL): | 7.50 psu |
| Oxygen Saturation (O2PCT): | 73.8% |
| Oxygen Concentration (O2PPM): | 8.10 ppm |
| Turbidity (TURB): | 16 FTU |
| pH (PH): | 7.40 |
| TIME (PST) |
DEPTH ft |
OTMP °F |
COND mS/cm |
SAL psu |
O2% % |
O2PPM ppm |
CLCON ug/l |
TURB FTU |
PH |
EH mV |
|---|---|---|---|---|---|---|---|---|---|---|
| 2025-12-08 08:15 am | 7.2 | 48.38 | 12.98 | 7.50 | 74.40 | 8.20 | - | 16 | 7.40 | - |
| 2025-12-08 08:00 am | 7.2 | 48.56 | 12.97 | 7.50 | 74.50 | 8.20 | - | 18 | 7.40 | - |
| 2025-12-08 07:45 am | 7.5 | 48.74 | 12.93 | 7.40 | 75.30 | 8.20 | - | 18 | 7.40 | - |
| 2025-12-08 07:30 am | 7.5 | 48.74 | 12.85 | 7.40 | 75.80 | 8.30 | - | 19 | 7.40 | - |
| 2025-12-08 07:15 am | 7.9 | 48.92 | 12.74 | 7.30 | 75.80 | 8.30 | - | 21 | 7.40 | - |
| 2025-12-08 07:00 am | 7.9 | 48.92 | 12.62 | 7.30 | 75.50 | 8.20 | - | 22 | 7.40 | - |
| 2025-12-08 06:45 am | 7.9 | 49.10 | 12.39 | 7.10 | 75.70 | 8.30 | - | 24 | 7.40 | - |
| 2025-12-08 06:30 am | 7.9 | 49.10 | 12.41 | 7.10 | 75.70 | 8.30 | - | 24 | 7.40 | - |
| 2025-12-08 06:15 am | 7.9 | 49.10 | 12.54 | 7.20 | 75.30 | 8.20 | - | 23 | 7.40 | - |
| 2025-12-08 06:00 am | 7.5 | 49.10 | 12.55 | 7.20 | 75.40 | 8.20 | - | 23 | 7.40 | - |
| 2025-12-08 05:45 am | 7.5 | 49.10 | 12.63 | 7.30 | 75.40 | 8.20 | - | 22 | 7.40 | - |
| 2025-12-08 05:30 am | 7.5 | 48.92 | 12.72 | 7.30 | 75.90 | 8.30 | - | 27 | 7.40 | - |
| 2025-12-08 05:15 am | 7.5 | 48.92 | 12.89 | 7.40 | 75.40 | 8.20 | - | 25 | 7.40 | - |
| 2025-12-08 05:00 am | 7.5 | 48.74 | 12.93 | 7.40 | 75.10 | 8.20 | - | 26 | 7.40 | - |
| 2025-12-08 04:45 am | 7.2 | 48.74 | 12.97 | 7.50 | 74.30 | 8.10 | - | 23 | 7.40 | - |
| 2025-12-08 04:30 am | 7.2 | 48.74 | 13.00 | 7.50 | 74.30 | 8.10 | - | 24 | 7.40 | - |
| 2025-12-08 04:15 am | 7.2 | 48.74 | 13.03 | 7.50 | 73.80 | 8.10 | - | 21 | 7.40 | - |
| 2025-12-08 04:00 am | 6.9 | 48.56 | 13.07 | 7.50 | 73.80 | 8.10 | - | 22 | 7.40 | - |
| 2025-12-08 03:45 am | 6.9 | 48.56 | 13.12 | 7.60 | 74.10 | 8.10 | - | 32 | 7.40 | - |
| 2025-12-08 03:30 am | 6.6 | 48.56 | 13.09 | 7.50 | 74.30 | 8.20 | - | 19 | 7.40 | - |
| 2025-12-08 03:15 am | 6.6 | 48.38 | 13.01 | 7.50 | 74.80 | 8.20 | - | 20 | 7.40 | - |
| 2025-12-08 03:00 am | 6.2 | 48.56 | 12.94 | 7.40 | 75.50 | 8.30 | - | 19 | 7.50 | - |
| 2025-12-08 02:45 am | 5.9 | 48.56 | 13.01 | 7.50 | 76.80 | 8.40 | - | 19 | 7.50 | - |
| 2025-12-08 02:30 am | 5.9 | 48.74 | 13.14 | 7.60 | 77.80 | 8.50 | - | 24 | 7.50 | - |
| 2025-12-08 02:15 am | 5.6 | 48.74 | 13.20 | 7.60 | 78.30 | 8.60 | - | 25 | 7.50 | - |
| 2025-12-08 02:00 am | 4.9 | 48.74 | 13.09 | 7.50 | 77.90 | 8.50 | - | 24 | 7.50 | - |
| 2025-12-08 01:45 am | 4.6 | 48.74 | 12.88 | 7.40 | 76.40 | 8.40 | - | 21 | 7.50 | - |
| 2025-12-08 01:30 am | 4.3 | 48.56 | 12.77 | 7.30 | 75.40 | 8.30 | - | 19 | 7.50 | - |
| 2025-12-08 01:15 am | 3.6 | 48.56 | 12.80 | 7.40 | 75.40 | 8.30 | - | 23 | 7.50 | - |
| 2025-12-08 01:00 am | 3.3 | 48.56 | 12.87 | 7.40 | 75.20 | 8.30 | - | 25 | 7.40 | - |
| 2025-12-08 12:45 am | 3.0 | 47.66 | 13.15 | 7.60 | 68.00 | 7.60 | - | 32 | 7.30 | - |
| 2025-12-08 12:30 am | 3.0 | 47.66 | 13.14 | 7.60 | 67.60 | 7.50 | - | 29 | 7.30 | - |
| 2025-12-08 12:15 am | 3.0 | 47.66 | 13.16 | 7.60 | 67.50 | 7.50 | - | 29 | 7.30 | - |
| 2025-12-08 12:00 am | 3.0 | 47.66 | 13.14 | 7.60 | 68.40 | 7.60 | - | 34 | 7.30 | - |
| 2025-12-07 11:45 pm | 3.3 | 47.66 | 13.14 | 7.60 | 68.40 | 7.60 | - | 29 | 7.30 | - |
| 2025-12-07 11:30 pm | 3.3 | 47.84 | 13.13 | 7.60 | 69.00 | 7.60 | - | 22 | 7.30 | - |
| 2025-12-07 11:15 pm | 3.6 | 47.84 | 13.14 | 7.60 | 69.30 | 7.70 | - | 21 | 7.30 | - |
| 2025-12-07 11:00 pm | 3.9 | 48.02 | 13.13 | 7.60 | 70.20 | 7.80 | - | 21 | 7.30 | - |
| 2025-12-07 10:45 pm | 3.9 | 48.02 | 13.13 | 7.60 | 70.60 | 7.80 | - | 19 | 7.30 | - |
| 2025-12-07 10:30 pm | 4.3 | 48.20 | 13.13 | 7.60 | 71.20 | 7.90 | - | 18 | 7.30 | - |
| 2025-12-07 10:15 pm | 4.6 | 48.20 | 13.13 | 7.60 | 71.90 | 7.90 | - | 19 | 7.40 | - |
| 2025-12-07 10:00 pm | 4.6 | 48.38 | 13.15 | 7.60 | 72.70 | 8.00 | - | 20 | 7.40 | - |
| 2025-12-07 09:45 pm | 4.9 | 48.56 | 13.17 | 7.60 | 73.40 | 8.00 | - | 19 | 7.40 | - |
| 2025-12-07 09:30 pm | 5.2 | 48.56 | 13.19 | 7.60 | 74.10 | 8.10 | - | 18 | 7.40 | - |
| 2025-12-07 09:15 pm | 5.2 | 48.74 | 13.22 | 7.60 | 74.60 | 8.20 | - | 16 | 7.40 | - |
| 2025-12-07 09:00 pm | 5.6 | 48.92 | 13.22 | 7.60 | 75.00 | 8.20 | - | 16 | 7.40 | - |
| 2025-12-07 08:45 pm | 5.9 | 48.92 | 13.23 | 7.60 | 75.30 | 8.20 | - | 15 | 7.40 | - |
| 2025-12-07 08:30 pm | 5.9 | 49.10 | 13.22 | 7.60 | 75.60 | 8.20 | - | 15 | 7.40 | - |
| 2025-12-07 08:15 pm | 6.2 | 49.10 | 13.21 | 7.60 | 76.00 | 8.30 | - | 15 | 7.40 | - |
| 2025-12-07 08:00 pm | 6.2 | 49.10 | 13.20 | 7.60 | 76.00 | 8.30 | - | 15 | 7.40 | - |
| 2025-12-07 07:45 pm | 6.6 | 49.28 | 13.18 | 7.60 | 76.20 | 8.30 | - | 14 | 7.50 | - |
| 2025-12-07 07:30 pm | 6.6 | 49.28 | 13.11 | 7.60 | 76.20 | 8.30 | - | 15 | 7.50 | - |
| 2025-12-07 07:15 pm | 6.9 | 49.28 | 12.99 | 7.50 | 76.40 | 8.30 | - | 15 | 7.50 | - |
| 2025-12-07 07:00 pm | 7.2 | 49.46 | 12.77 | 7.40 | 76.70 | 8.30 | - | 16 | 7.50 | - |
| 2025-12-07 06:45 pm | 7.2 | 49.46 | 12.67 | 7.30 | 76.50 | 8.30 | - | 15 | 7.40 | - |
| 2025-12-07 06:30 pm | 7.5 | 49.46 | 12.73 | 7.30 | 76.50 | 8.30 | - | 16 | 7.40 | - |
| 2025-12-07 06:15 pm | 7.9 | 49.64 | 12.51 | 7.20 | 76.40 | 8.30 | - | 17 | 7.40 | - |
| 2025-12-07 06:00 pm | 7.9 | 49.64 | 12.62 | 7.30 | 76.40 | 8.30 | - | 18 | 7.40 | - |
| 2025-12-07 05:45 pm | 8.2 | 49.64 | 12.40 | 7.10 | 76.40 | 8.30 | - | 17 | 7.40 | - |
| 2025-12-07 05:30 pm | 8.5 | 49.46 | 12.68 | 7.30 | 76.20 | 8.30 | - | 19 | 7.40 | - |
| 2025-12-07 05:15 pm | 8.5 | 49.64 | 12.64 | 7.30 | 76.20 | 8.30 | - | 20 | 7.40 | - |
| 2025-12-07 05:00 pm | 8.9 | 49.82 | 10.88 | 6.20 | 76.20 | 8.30 | - | 24 | 7.40 | - |
| 2025-12-07 04:45 pm | 8.9 | 49.64 | 11.73 | 6.70 | 75.60 | 8.20 | - | 27 | 7.40 | - |
| 2025-12-07 04:30 pm | 9.2 | 50.00 | 10.76 | 6.10 | 76.20 | 8.30 | - | 28 | 7.40 | - |
| 2025-12-07 04:15 pm | 9.2 | 49.82 | 10.93 | 6.20 | 76.40 | 8.30 | - | 26 | 7.40 | - |
| 2025-12-07 04:00 pm | 9.2 | 50.18 | 10.04 | 5.70 | 77.10 | 8.40 | - | 27 | 7.40 | - |
| 2025-12-07 03:45 pm | 9.2 | 50.18 | 9.69 | 5.50 | 77.50 | 8.40 | - | 35 | 7.40 | - |
| 2025-12-07 03:30 pm | 9.2 | 50.36 | 9.42 | 5.30 | 77.80 | 8.50 | - | 39 | 7.40 | - |
| 2025-12-07 03:15 pm | 8.9 | 50.18 | 9.57 | 5.40 | 77.70 | 8.40 | - | 37 | 7.40 | - |
| 2025-12-07 03:00 pm | 8.9 | 50.18 | 9.71 | 5.50 | 77.50 | 8.40 | - | 39 | 7.40 | - |
| 2025-12-07 02:45 pm | 8.9 | 50.00 | 9.92 | 5.60 | 77.30 | 8.40 | - | 36 | 7.40 | - |
| 2025-12-07 02:30 pm | 8.9 | 50.00 | 10.12 | 5.70 | 77.20 | 8.40 | - | 34 | 7.40 | - |
| 2025-12-07 02:15 pm | 8.5 | 50.00 | 10.29 | 5.80 | 77.00 | 8.40 | - | 32 | 7.40 | - |
| 2025-12-07 02:00 pm | 8.5 | 49.82 | 10.51 | 6.00 | 76.90 | 8.40 | - | 31 | 7.40 | - |
| 2025-12-07 01:45 pm | 8.2 | 49.82 | 10.84 | 6.20 | 76.70 | 8.40 | - | 30 | 7.40 | - |
| 2025-12-07 01:30 pm | 8.2 | 49.64 | 11.21 | 6.40 | 76.40 | 8.30 | - | 29 | 7.40 | - |
| 2025-12-07 01:15 pm | 8.2 | 49.46 | 11.83 | 6.80 | 76.40 | 8.30 | - | 26 | 7.40 | - |
| 2025-12-07 01:00 pm | 7.9 | 49.46 | 12.59 | 7.20 | 76.80 | 8.30 | - | 25 | 7.50 | - |
| 2025-12-07 12:45 pm | 7.9 | 49.46 | 13.19 | 7.60 | 77.00 | 8.30 | - | 26 | 7.50 | - |
| 2025-12-07 12:30 pm | 7.5 | 49.46 | 13.36 | 7.70 | 77.00 | 8.30 | - | 23 | 7.50 | - |
| 2025-12-07 12:15 pm | 7.2 | 49.46 | 13.37 | 7.70 | 77.10 | 8.40 | - | 22 | 7.50 | - |
| 2025-12-07 12:00 pm | 6.9 | 49.46 | 13.36 | 7.70 | 77.00 | 8.30 | - | 21 | 7.50 | - |
| 2025-12-07 11:45 am | 6.9 | 49.46 | 13.36 | 7.70 | 77.00 | 8.30 | - | 19 | 7.50 | - |
| 2025-12-07 11:30 am | 6.6 | 49.28 | 13.36 | 7.70 | 77.20 | 8.40 | - | 19 | 7.50 | - |
| 2025-12-07 11:15 am | 6.2 | 49.28 | 13.34 | 7.70 | 77.10 | 8.40 | - | 19 | 7.50 | - |
| 2025-12-07 11:00 am | 6.2 | 49.28 | 13.35 | 7.70 | 77.10 | 8.40 | - | 21 | 7.50 | - |
| 2025-12-07 10:45 am | 5.9 | 49.28 | 13.33 | 7.70 | 77.10 | 8.40 | - | 24 | 7.50 | - |
| 2025-12-07 10:30 am | 5.9 | 49.28 | 13.33 | 7.70 | 76.80 | 8.30 | - | 21 | 7.50 | - |
| 2025-12-07 10:15 am | 5.9 | 48.74 | 13.23 | 7.60 | 75.50 | 8.30 | - | 20 | 7.40 | - |
| 2025-12-07 10:00 am | 5.9 | 48.74 | 13.20 | 7.60 | 75.50 | 8.30 | - | 17 | 7.50 | - |
| 2025-12-07 09:45 am | 5.9 | 48.74 | 13.17 | 7.60 | 75.50 | 8.20 | - | 18 | 7.50 | - |
| 2025-12-07 09:30 am | 5.9 | 48.92 | 13.16 | 7.60 | 75.60 | 8.30 | - | 17 | 7.50 | - |
| 2025-12-07 09:15 am | 5.9 | 48.74 | 13.12 | 7.60 | 75.60 | 8.30 | - | 17 | 7.50 | - |
| 2025-12-07 09:00 am | 6.2 | 48.74 | 13.05 | 7.50 | 75.70 | 8.30 | - | 16 | 7.50 | - |
Historical data for station FFFC1 are available at the NERRS website.
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