NDBC has recently revised the NDBC Handbook of Automated Data Quality Control Checks and Procedures. The new document can be found on our Publications page.
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): | 9.5 ft |
 Ocean Temperature (OTMP): | 59.90 °F |
| Conductivity (COND): | 0.97 mS/cm |
| Salinity (SAL): | 0.50 psu |
| Oxygen Concentration (O2PCT): | 82.2% |
| Oxygen Concentration (O2PPM): | 8.20 ppm |
| Turbidity (TURB): | 46 FTU |
| pH (PH): | 7.60 |
| TIME (PDT) |
DEPTH ft |
OTMP °F |
COND mS/cm |
SAL psu |
O2% % |
O2PPM ppm |
CLCON ug/l |
TURB FTU |
PH |
EH mv |
|---|---|---|---|---|---|---|---|---|---|---|
| 2025-03-31 05:15 am | 9.5 | 60.08 | 0.92 | 0.50 | 82.60 | 8.20 | - | 46 | 7.50 | - |
| 2025-03-31 05:00 am | 9.5 | 60.08 | 0.98 | 0.50 | 83.20 | 8.30 | - | 45 | 7.60 | - |
| 2025-03-31 04:45 am | 9.5 | 60.08 | 1.14 | 0.60 | 83.40 | 8.30 | - | 53 | 7.70 | - |
| 2025-03-31 04:30 am | 9.5 | 60.08 | 1.22 | 0.60 | 81.60 | 8.10 | - | 57 | 7.60 | - |
| 2025-03-31 04:15 am | 9.5 | 60.08 | 1.31 | 0.70 | 80.30 | 8.00 | - | 53 | 7.60 | - |
| 2025-03-31 04:00 am | 9.5 | 59.90 | 1.50 | 0.80 | 78.00 | 7.70 | - | 53 | 7.60 | - |
| 2025-03-31 03:45 am | 9.2 | 59.90 | 1.42 | 0.70 | 77.90 | 7.70 | - | 51 | 7.60 | - |
| 2025-03-31 03:30 am | 9.2 | 60.08 | 1.38 | 0.70 | 78.30 | 7.80 | - | 54 | 7.60 | - |
| 2025-03-31 03:15 am | 9.2 | 60.08 | 1.25 | 0.60 | 79.10 | 7.90 | - | 61 | 7.60 | - |
| 2025-03-31 03:00 am | 8.9 | 60.08 | 1.29 | 0.70 | 78.90 | 7.80 | - | 65 | 7.60 | - |
| 2025-03-31 02:45 am | 8.9 | 60.08 | 1.45 | 0.70 | 77.50 | 7.70 | - | 66 | 7.60 | - |
| 2025-03-31 02:30 am | 8.5 | 60.08 | 1.56 | 0.80 | 76.70 | 7.60 | - | 62 | 7.60 | - |
| 2025-03-31 02:15 am | 8.5 | 60.08 | 1.61 | 0.80 | 76.20 | 7.60 | - | 61 | 7.60 | - |
| 2025-03-31 02:00 am | 8.2 | 60.08 | 1.68 | 0.90 | 75.70 | 7.50 | - | 60 | 7.60 | - |
| 2025-03-31 01:45 am | 8.2 | 60.26 | 1.78 | 0.90 | 75.20 | 7.40 | - | 60 | 7.60 | - |
| 2025-03-31 01:30 am | 7.9 | 60.26 | 1.85 | 0.90 | 74.60 | 7.40 | - | 57 | 7.70 | - |
| 2025-03-31 01:15 am | 7.5 | 60.44 | 1.89 | 1.00 | 74.40 | 7.30 | - | 54 | 7.70 | - |
| 2025-03-31 01:00 am | 7.2 | 60.44 | 1.90 | 1.00 | 74.40 | 7.30 | - | 51 | 7.70 | - |
| 2025-03-31 12:45 am | 6.9 | 60.44 | 1.89 | 1.00 | 74.60 | 7.40 | - | 49 | 7.70 | - |
| 2025-03-31 12:30 am | 6.6 | 60.62 | 1.91 | 1.00 | 74.40 | 7.30 | - | 49 | 7.70 | - |
| 2025-03-31 12:15 am | 6.2 | 60.62 | 1.92 | 1.00 | 74.20 | 7.30 | - | 51 | 7.70 | - |
| 2025-03-31 12:00 am | 5.9 | 60.62 | 1.93 | 1.00 | 74.00 | 7.30 | - | 49 | 7.70 | - |
| 2025-03-30 11:45 pm | 5.6 | 60.62 | 1.92 | 1.00 | 74.30 | 7.30 | - | 50 | 7.70 | - |
| 2025-03-30 11:30 pm | 5.2 | 60.62 | 1.91 | 1.00 | 74.60 | 7.30 | - | 52 | 7.70 | - |
| 2025-03-30 11:15 pm | 4.9 | 60.62 | 1.95 | 1.00 | 74.10 | 7.30 | - | 57 | 7.70 | - |
| 2025-03-30 11:00 pm | 4.9 | 60.26 | 2.06 | 1.10 | 73.30 | 7.20 | - | 58 | 7.70 | - |
| 2025-03-30 10:45 pm | 4.6 | 60.26 | 2.14 | 1.10 | 72.10 | 7.10 | - | 64 | 7.60 | - |
| 2025-03-30 10:30 pm | 4.9 | 60.44 | 2.13 | 1.10 | 72.60 | 7.20 | - | 66 | 7.60 | - |
| 2025-03-30 10:15 pm | 4.9 | 60.44 | 2.11 | 1.10 | 73.30 | 7.20 | - | 65 | 7.60 | - |
| 2025-03-30 10:00 pm | 4.9 | 60.62 | 2.08 | 1.10 | 73.80 | 7.30 | - | 64 | 7.70 | - |
| 2025-03-30 09:45 pm | 5.2 | 60.80 | 2.06 | 1.10 | 74.10 | 7.30 | - | 60 | 7.70 | - |
| 2025-03-30 09:30 pm | 5.2 | 60.80 | 2.03 | 1.00 | 74.40 | 7.30 | - | 57 | 7.70 | - |
| 2025-03-30 09:15 pm | 5.6 | 60.80 | 2.02 | 1.00 | 74.60 | 7.30 | - | 55 | 7.70 | - |
| 2025-03-30 09:00 pm | 5.6 | 60.98 | 2.01 | 1.00 | 74.90 | 7.30 | - | 57 | 7.70 | - |
| 2025-03-30 08:45 pm | 5.9 | 60.98 | 2.00 | 1.00 | 74.90 | 7.30 | - | 53 | 7.70 | - |
| 2025-03-30 08:30 pm | 6.2 | 60.98 | 2.00 | 1.00 | 75.10 | 7.40 | - | 52 | 7.70 | - |
| 2025-03-30 08:15 pm | 6.2 | 60.80 | 1.99 | 1.00 | 75.00 | 7.40 | - | 53 | 7.70 | - |
| 2025-03-30 08:00 pm | 6.6 | 60.80 | 1.98 | 1.00 | 75.10 | 7.40 | - | 52 | 7.70 | - |
| 2025-03-30 07:45 pm | 6.9 | 60.80 | 1.96 | 1.00 | 75.10 | 7.40 | - | 50 | 7.70 | - |
| 2025-03-30 07:30 pm | 6.9 | 60.62 | 1.90 | 1.00 | 75.30 | 7.40 | - | 49 | 7.60 | - |
| 2025-03-30 07:15 pm | 7.2 | 60.80 | 1.90 | 1.00 | 75.40 | 7.40 | - | 50 | 7.60 | - |
| 2025-03-30 07:00 pm | 7.5 | 60.80 | 1.84 | 0.90 | 76.40 | 7.50 | - | 52 | 7.60 | - |
| 2025-03-30 06:45 pm | 7.9 | 60.80 | 1.75 | 0.90 | 77.60 | 7.60 | - | 51 | 7.60 | - |
| 2025-03-30 06:30 pm | 8.2 | 60.62 | 1.65 | 0.80 | 77.90 | 7.70 | - | 51 | 7.60 | - |
| 2025-03-30 06:15 pm | 8.2 | 60.62 | 1.50 | 0.80 | 79.30 | 7.80 | - | 49 | 7.60 | - |
| 2025-03-30 06:00 pm | 8.5 | 60.62 | 1.37 | 0.70 | 80.00 | 7.90 | - | 48 | 7.60 | - |
| 2025-03-30 05:45 pm | 8.5 | 60.62 | 1.20 | 0.60 | 80.90 | 8.00 | - | 48 | 7.60 | - |
| 2025-03-30 05:30 pm | 8.9 | 60.62 | 1.12 | 0.60 | 81.40 | 8.00 | - | 47 | 7.60 | - |
| 2025-03-30 05:15 pm | 8.9 | 60.62 | 1.08 | 0.50 | 81.00 | 8.00 | - | 53 | 7.50 | - |
| 2025-03-30 05:00 pm | 8.9 | 60.80 | 0.98 | 0.50 | 82.80 | 8.20 | - | 49 | 7.50 | - |
| 2025-03-30 04:45 pm | 8.9 | 60.80 | 1.00 | 0.50 | 82.60 | 8.10 | - | 51 | 7.50 | - |
| 2025-03-30 04:30 pm | 8.9 | 60.62 | 1.05 | 0.50 | 81.70 | 8.10 | - | 52 | 7.50 | - |
| 2025-03-30 04:15 pm | 8.9 | 60.44 | 1.14 | 0.60 | 80.20 | 7.90 | - | 58 | 7.50 | - |
| 2025-03-30 04:00 pm | 8.5 | 60.26 | 1.23 | 0.60 | 79.20 | 7.80 | - | 64 | 7.60 | - |
| 2025-03-30 03:45 pm | 8.5 | 60.08 | 1.33 | 0.70 | 78.00 | 7.70 | - | 67 | 7.60 | - |
| 2025-03-30 03:30 pm | 8.5 | 60.08 | 1.45 | 0.70 | 76.60 | 7.60 | - | 74 | 7.60 | - |
| 2025-03-30 03:15 pm | 8.2 | 59.90 | 1.54 | 0.80 | 75.80 | 7.50 | - | 72 | 7.60 | - |
| 2025-03-30 03:00 pm | 8.2 | 59.90 | 1.59 | 0.80 | 75.40 | 7.50 | - | 69 | 7.60 | - |
| 2025-03-30 02:45 pm | 8.2 | 59.90 | 1.64 | 0.80 | 75.10 | 7.50 | - | 67 | 7.60 | - |
| 2025-03-30 02:30 pm | 7.9 | 59.90 | 1.72 | 0.90 | 74.30 | 7.40 | - | 65 | 7.60 | - |
| 2025-03-30 02:15 pm | 7.5 | 60.08 | 1.79 | 0.90 | 73.60 | 7.30 | - | 65 | 7.60 | - |
| 2025-03-30 02:00 pm | 7.5 | 60.08 | 1.88 | 1.00 | 72.60 | 7.20 | - | 61 | 7.60 | - |
| 2025-03-30 01:45 pm | 7.2 | 59.90 | 1.95 | 1.00 | 71.00 | 7.00 | - | 56 | 7.60 | - |
| 2025-03-30 01:30 pm | 6.9 | 59.90 | 1.98 | 1.00 | 70.10 | 7.00 | - | 54 | 7.60 | - |
| 2025-03-30 01:15 pm | 6.6 | 59.90 | 2.00 | 1.00 | 69.70 | 6.90 | - | 55 | 7.60 | - |
| 2025-03-30 01:00 pm | 6.2 | 59.90 | 1.99 | 1.00 | 69.90 | 6.90 | - | 52 | 7.60 | - |
| 2025-03-30 12:45 pm | 5.6 | 60.08 | 1.95 | 1.00 | 70.40 | 7.00 | - | 54 | 7.70 | - |
| 2025-03-30 12:30 pm | 5.2 | 60.08 | 1.95 | 1.00 | 69.70 | 6.90 | - | 54 | 7.70 | - |
| 2025-03-30 12:15 pm | 4.9 | 59.90 | 1.95 | 1.00 | 69.30 | 6.90 | - | 56 | 7.70 | - |
| 2025-03-30 12:00 pm | 4.6 | 59.90 | 1.95 | 1.00 | 69.30 | 6.90 | - | 52 | 7.70 | - |
| 2025-03-30 11:45 am | 4.3 | 59.90 | 1.95 | 1.00 | 69.50 | 6.90 | - | 54 | 7.70 | - |
| 2025-03-30 11:30 am | 3.9 | 59.54 | 2.07 | 1.10 | 68.30 | 6.80 | - | 60 | 7.60 | - |
| 2025-03-30 11:15 am | 3.9 | 57.92 | 2.33 | 1.20 | 63.20 | 6.40 | - | 76 | 7.50 | - |
| 2025-03-30 11:00 am | 3.9 | 57.74 | 2.37 | 1.20 | 63.10 | 6.40 | - | 78 | 7.50 | - |
| 2025-03-30 10:45 am | 3.9 | 57.74 | 2.36 | 1.20 | 63.40 | 6.40 | - | 80 | 7.50 | - |
| 2025-03-30 10:30 am | 3.9 | 57.74 | 2.32 | 1.20 | 63.80 | 6.50 | - | 81 | 7.60 | - |
| 2025-03-30 10:15 am | 3.9 | 57.92 | 2.27 | 1.20 | 64.10 | 6.50 | - | 79 | 7.60 | - |
| 2025-03-30 10:00 am | 4.3 | 58.10 | 2.22 | 1.20 | 64.70 | 6.60 | - | 77 | 7.60 | - |
| 2025-03-30 09:45 am | 4.3 | 58.28 | 2.17 | 1.10 | 65.30 | 6.60 | - | 72 | 7.60 | - |
| 2025-03-30 09:30 am | 4.6 | 58.28 | 2.13 | 1.10 | 65.80 | 6.60 | - | 69 | 7.60 | - |
| 2025-03-30 09:15 am | 4.6 | 58.46 | 2.09 | 1.10 | 66.50 | 6.70 | - | 67 | 7.60 | - |
| 2025-03-30 09:00 am | 4.9 | 58.64 | 2.06 | 1.10 | 67.20 | 6.80 | - | 63 | 7.60 | - |
| 2025-03-30 08:45 am | 5.2 | 58.82 | 2.04 | 1.10 | 67.70 | 6.80 | - | 64 | 7.60 | - |
| 2025-03-30 08:30 am | 5.2 | 59.00 | 2.02 | 1.00 | 68.20 | 6.80 | - | 64 | 7.60 | - |
| 2025-03-30 08:15 am | 5.6 | 59.18 | 2.00 | 1.00 | 68.70 | 6.90 | - | 58 | 7.60 | - |
| 2025-03-30 08:00 am | 5.9 | 59.18 | 1.99 | 1.00 | 69.20 | 6.90 | - | 59 | 7.60 | - |
| 2025-03-30 07:45 am | 6.2 | 59.36 | 1.97 | 1.00 | 69.60 | 7.00 | - | 57 | 7.60 | - |
| 2025-03-30 07:30 am | 6.2 | 59.54 | 1.95 | 1.00 | 70.00 | 7.00 | - | 57 | 7.60 | - |
| 2025-03-30 07:15 am | 6.6 | 59.54 | 1.92 | 1.00 | 70.40 | 7.00 | - | 56 | 7.60 | - |
| 2025-03-30 07:00 am | 6.9 | 59.72 | 1.88 | 1.00 | 71.00 | 7.10 | - | 56 | 7.60 | - |
| 2025-03-30 06:45 am | 7.2 | 59.72 | 1.81 | 0.90 | 71.90 | 7.20 | - | 57 | 7.60 | - |
| 2025-03-30 06:30 am | 7.2 | 59.90 | 1.74 | 0.90 | 73.00 | 7.20 | - | 57 | 7.60 | - |
| 2025-03-30 06:15 am | 7.5 | 60.08 | 1.65 | 0.80 | 74.40 | 7.40 | - | 63 | 7.60 | - |
| 2025-03-30 06:00 am | 7.9 | 60.08 | 1.51 | 0.80 | 76.10 | 7.50 | - | 60 | 7.60 | - |
Links which are specific to this station are listed below:
Real Time Data in tabular form for the last forty-five days.
Historical Data & Climatic Summaries for quality controlled data for prior months and years.
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