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 RYEC1 - Second Mallard, San Francisco Bay Reserve, CA
Owned and maintained by National Estuarine Research Reserve System
NERRS Water Quality Station
38.184 N 122.014 W (38°11'3" N 122°0'49" 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): | 5.6 ft |
 Ocean Temperature (OTMP): | 61.34 °F |
| Conductivity (COND): | 1.47 mS/cm |
| Salinity (SAL): | 0.70 psu |
| Oxygen Concentration (O2PCT): | 79.4% |
| Oxygen Concentration (O2PPM): | 7.80 ppm |
| Turbidity (TURB): | 43 FTU |
| pH (PH): | 7.40 |
| TIME (PDT) |
DEPTH ft |
OTMP °F |
COND mS/cm |
SAL psu |
O2% % |
O2PPM ppm |
CLCON ug/l |
TURB FTU |
PH |
EH mv |
|---|---|---|---|---|---|---|---|---|---|---|
| 2025-03-27 06:15 pm | 5.9 | 61.34 | 1.43 | 0.70 | 79.70 | 7.80 | - | 45 | 7.40 | - |
| 2025-03-27 06:00 pm | 6.2 | 61.52 | 1.39 | 0.70 | 80.00 | 7.80 | - | 45 | 7.50 | - |
| 2025-03-27 05:45 pm | 6.2 | 61.52 | 1.35 | 0.70 | 80.50 | 7.80 | - | 51 | 7.50 | - |
| 2025-03-27 05:30 pm | 6.6 | 61.70 | 1.30 | 0.70 | 80.90 | 7.90 | - | 53 | 7.50 | - |
| 2025-03-27 05:15 pm | 6.9 | 61.70 | 1.26 | 0.60 | 81.60 | 7.90 | - | 60 | 7.50 | - |
| 2025-03-27 05:00 pm | 7.2 | 61.88 | 1.20 | 0.60 | 82.50 | 8.00 | - | 74 | 7.50 | - |
| 2025-03-27 04:45 pm | 7.5 | 61.88 | 1.13 | 0.60 | 83.80 | 8.10 | - | 91 | 7.50 | - |
| 2025-03-27 04:30 pm | 7.9 | 62.06 | 1.04 | 0.50 | 85.10 | 8.30 | - | 109 | 7.50 | - |
| 2025-03-27 04:15 pm | 8.2 | 62.24 | 0.93 | 0.50 | 87.40 | 8.50 | - | 127 | 7.50 | - |
| 2025-03-27 04:00 pm | 8.2 | 62.24 | 0.83 | 0.40 | 89.70 | 8.70 | - | 153 | 7.50 | - |
| 2025-03-27 03:45 pm | 8.5 | 62.06 | 0.79 | 0.40 | 90.90 | 8.80 | - | 174 | 7.50 | - |
| 2025-03-27 03:30 pm | 9.2 | 61.70 | 0.79 | 0.40 | 91.00 | 8.90 | - | 104 | 7.50 | - |
| 2025-03-27 03:15 pm | 9.5 | 61.16 | 0.82 | 0.40 | 90.30 | 8.90 | - | 58 | 7.50 | - |
| 2025-03-27 03:00 pm | 9.5 | 61.16 | 0.84 | 0.40 | 89.00 | 8.70 | - | 47 | 7.50 | - |
| 2025-03-27 02:45 pm | 9.5 | 60.98 | 0.84 | 0.40 | 89.90 | 8.80 | - | 42 | 7.50 | - |
| 2025-03-27 02:30 pm | 9.8 | 61.16 | 0.83 | 0.40 | 90.10 | 8.80 | - | 48 | 7.50 | - |
| 2025-03-27 02:15 pm | 9.8 | 61.16 | 0.81 | 0.40 | 90.30 | 8.90 | - | 64 | 7.50 | - |
| 2025-03-27 02:00 pm | 9.8 | 61.34 | 0.80 | 0.40 | 90.50 | 8.90 | - | 67 | 7.50 | - |
| 2025-03-27 01:45 pm | 9.8 | 61.52 | 0.78 | 0.40 | 90.80 | 8.90 | - | 74 | 7.50 | - |
| 2025-03-27 01:30 pm | 9.5 | 61.88 | 0.78 | 0.40 | 90.80 | 8.80 | - | 77 | 7.50 | - |
| 2025-03-27 01:15 pm | 9.5 | 62.06 | 0.78 | 0.40 | 90.90 | 8.80 | - | 91 | 7.50 | - |
| 2025-03-27 01:00 pm | 9.5 | 62.24 | 0.78 | 0.40 | 90.90 | 8.80 | - | 92 | 7.50 | - |
| 2025-03-27 12:45 pm | 9.5 | 62.42 | 0.78 | 0.40 | 90.70 | 8.80 | - | 79 | 7.50 | - |
| 2025-03-27 12:30 pm | 9.2 | 62.42 | 0.78 | 0.40 | 90.50 | 8.80 | - | 88 | 7.50 | - |
| 2025-03-27 12:15 pm | 9.2 | 62.24 | 0.80 | 0.40 | 89.70 | 8.70 | - | 80 | 7.50 | - |
| 2025-03-27 12:00 pm | 8.9 | 61.88 | 0.88 | 0.40 | 87.70 | 8.50 | - | 69 | 7.50 | - |
| 2025-03-27 11:45 am | 8.9 | 61.70 | 0.98 | 0.50 | 85.70 | 8.40 | - | 75 | 7.50 | - |
| 2025-03-27 11:30 am | 8.5 | 61.70 | 1.05 | 0.50 | 84.50 | 8.20 | - | 74 | 7.50 | - |
| 2025-03-27 11:15 am | 8.5 | 61.70 | 1.07 | 0.50 | 84.20 | 8.20 | - | 82 | 7.50 | - |
| 2025-03-27 11:00 am | 8.2 | 61.52 | 1.06 | 0.50 | 84.10 | 8.20 | - | 74 | 7.50 | - |
| 2025-03-27 10:45 am | 7.9 | 61.52 | 1.17 | 0.60 | 82.60 | 8.10 | - | 63 | 7.50 | - |
| 2025-03-27 10:30 am | 7.5 | 61.52 | 1.40 | 0.70 | 80.30 | 7.80 | - | 59 | 7.50 | - |
| 2025-03-27 10:15 am | 7.2 | 61.34 | 1.47 | 0.70 | 79.30 | 7.70 | - | 61 | 7.50 | - |
| 2025-03-27 10:00 am | 6.9 | 61.34 | 1.47 | 0.80 | 79.20 | 7.70 | - | 55 | 7.50 | - |
| 2025-03-27 09:45 am | 6.6 | 61.34 | 1.50 | 0.80 | 78.80 | 7.70 | - | 52 | 7.50 | - |
| 2025-03-27 09:30 am | 6.2 | 61.34 | 1.55 | 0.80 | 78.40 | 7.70 | - | 53 | 7.50 | - |
| 2025-03-27 09:15 am | 5.9 | 61.34 | 1.59 | 0.80 | 78.40 | 7.70 | - | 53 | 7.50 | - |
| 2025-03-27 09:00 am | 5.9 | 61.16 | 1.57 | 0.80 | 78.50 | 7.70 | - | 53 | 7.50 | - |
| 2025-03-27 08:45 am | 5.6 | 61.16 | 1.56 | 0.80 | 77.70 | 7.60 | - | 55 | 7.50 | - |
| 2025-03-27 08:30 am | 5.6 | 60.80 | 1.50 | 0.80 | 72.40 | 7.10 | - | 47 | 7.40 | - |
| 2025-03-27 08:15 am | 5.6 | 60.98 | 1.49 | 0.80 | 73.80 | 7.20 | - | 44 | 7.40 | - |
| 2025-03-27 08:00 am | 5.6 | 60.98 | 1.49 | 0.80 | 75.20 | 7.40 | - | 39 | 7.40 | - |
| 2025-03-27 07:45 am | 5.6 | 60.98 | 1.47 | 0.80 | 75.70 | 7.40 | - | 45 | 7.50 | - |
| 2025-03-27 07:30 am | 5.6 | 60.98 | 1.46 | 0.70 | 76.60 | 7.50 | - | 38 | 7.40 | - |
| 2025-03-27 07:15 am | 5.6 | 60.98 | 1.44 | 0.70 | 77.70 | 7.60 | - | 40 | 7.50 | - |
| 2025-03-27 07:00 am | 5.9 | 61.16 | 1.42 | 0.70 | 78.30 | 7.70 | - | 41 | 7.50 | - |
| 2025-03-27 06:45 am | 5.9 | 61.16 | 1.40 | 0.70 | 78.70 | 7.70 | - | 41 | 7.50 | - |
| 2025-03-27 06:30 am | 6.2 | 61.16 | 1.38 | 0.70 | 79.50 | 7.80 | - | 41 | 7.50 | - |
| 2025-03-27 06:15 am | 6.2 | 61.34 | 1.35 | 0.70 | 80.00 | 7.80 | - | 40 | 7.50 | - |
| 2025-03-27 06:00 am | 6.6 | 61.34 | 1.34 | 0.70 | 80.60 | 7.90 | - | 42 | 7.50 | - |
| 2025-03-27 05:45 am | 6.6 | 61.34 | 1.31 | 0.70 | 81.10 | 7.90 | - | 42 | 7.50 | - |
| 2025-03-27 05:30 am | 6.9 | 61.52 | 1.30 | 0.70 | 81.40 | 7.90 | - | 44 | 7.50 | - |
| 2025-03-27 05:15 am | 7.2 | 61.52 | 1.28 | 0.60 | 81.80 | 8.00 | - | 45 | 7.50 | - |
| 2025-03-27 05:00 am | 7.5 | 61.52 | 1.22 | 0.60 | 82.60 | 8.10 | - | 44 | 7.50 | - |
| 2025-03-27 04:45 am | 7.5 | 61.52 | 1.12 | 0.60 | 84.00 | 8.20 | - | 42 | 7.50 | - |
| 2025-03-27 04:30 am | 7.9 | 61.70 | 1.00 | 0.50 | 85.70 | 8.40 | - | 40 | 7.50 | - |
| 2025-03-27 04:15 am | 8.2 | 61.70 | 0.93 | 0.50 | 87.30 | 8.50 | - | 36 | 7.50 | - |
| 2025-03-27 04:00 am | 8.5 | 61.88 | 0.86 | 0.40 | 88.70 | 8.60 | - | 35 | 7.50 | - |
| 2025-03-27 03:45 am | 8.5 | 62.06 | 0.80 | 0.40 | 90.00 | 8.70 | - | 36 | 7.50 | - |
| 2025-03-27 03:30 am | 8.9 | 62.24 | 0.78 | 0.40 | 90.60 | 8.80 | - | 47 | 7.50 | - |
| 2025-03-27 03:15 am | 8.9 | 62.24 | 0.77 | 0.40 | 90.50 | 8.80 | - | 39 | 7.50 | - |
| 2025-03-27 03:00 am | 9.2 | 62.24 | 0.77 | 0.40 | 89.20 | 8.60 | - | 33 | 7.50 | - |
| 2025-03-27 02:45 am | 9.2 | 62.24 | 0.77 | 0.40 | 89.10 | 8.60 | - | 31 | 7.40 | - |
| 2025-03-27 02:30 am | 9.2 | 62.24 | 0.77 | 0.40 | 90.90 | 8.80 | - | 37 | 7.50 | - |
| 2025-03-27 02:15 am | 9.2 | 62.24 | 0.77 | 0.40 | 91.20 | 8.80 | - | 42 | 7.50 | - |
| 2025-03-27 02:00 am | 9.2 | 62.42 | 0.77 | 0.40 | 91.30 | 8.80 | - | 46 | 7.50 | - |
| 2025-03-27 01:45 am | 9.2 | 62.42 | 0.77 | 0.40 | 91.40 | 8.80 | - | 50 | 7.50 | - |
| 2025-03-27 01:30 am | 9.2 | 62.42 | 0.77 | 0.40 | 91.10 | 8.80 | - | 48 | 7.50 | - |
| 2025-03-27 01:15 am | 9.2 | 62.42 | 0.77 | 0.40 | 91.50 | 8.80 | - | 62 | 7.50 | - |
| 2025-03-27 01:00 am | 8.9 | 62.42 | 0.77 | 0.40 | 91.50 | 8.80 | - | 59 | 7.50 | - |
| 2025-03-27 12:45 am | 8.9 | 62.42 | 0.78 | 0.40 | 91.50 | 8.90 | - | 59 | 7.50 | - |
| 2025-03-27 12:30 am | 8.5 | 62.42 | 0.80 | 0.40 | 90.80 | 8.80 | - | 56 | 7.50 | - |
| 2025-03-27 12:15 am | 8.5 | 62.06 | 0.87 | 0.40 | 88.80 | 8.60 | - | 57 | 7.50 | - |
| 2025-03-27 12:00 am | 8.2 | 61.70 | 0.99 | 0.50 | 86.10 | 8.40 | - | 85 | 7.50 | - |
| 2025-03-26 11:45 pm | 8.2 | 61.88 | 1.11 | 0.60 | 84.80 | 8.20 | - | 92 | 7.50 | - |
| 2025-03-26 11:30 pm | 7.9 | 62.06 | 1.24 | 0.60 | 83.70 | 8.10 | - | 95 | 7.50 | - |
| 2025-03-26 11:15 pm | 7.5 | 62.24 | 1.32 | 0.70 | 83.10 | 8.00 | - | 96 | 7.50 | - |
| 2025-03-26 11:00 pm | 7.2 | 62.06 | 1.35 | 0.70 | 82.90 | 8.00 | - | 85 | 7.50 | - |
| 2025-03-26 10:45 pm | 6.9 | 62.06 | 1.39 | 0.70 | 82.80 | 8.00 | - | 72 | 7.50 | - |
| 2025-03-26 10:30 pm | 6.2 | 62.06 | 1.45 | 0.70 | 82.10 | 8.00 | - | 69 | 7.50 | - |
| 2025-03-26 10:15 pm | 5.9 | 62.24 | 1.53 | 0.80 | 81.40 | 7.90 | - | 57 | 7.50 | - |
| 2025-03-26 10:00 pm | 5.6 | 62.24 | 1.59 | 0.80 | 80.70 | 7.80 | - | 53 | 7.50 | - |
| 2025-03-26 09:45 pm | 5.2 | 62.42 | 1.65 | 0.80 | 80.10 | 7.70 | - | 51 | 7.50 | - |
| 2025-03-26 09:30 pm | 4.9 | 62.42 | 1.69 | 0.90 | 79.90 | 7.70 | - | 50 | 7.60 | - |
| 2025-03-26 09:15 pm | 4.6 | 62.42 | 1.73 | 0.90 | 79.40 | 7.70 | - | 53 | 7.50 | - |
| 2025-03-26 09:00 pm | 4.6 | 62.06 | 1.51 | 0.80 | 77.00 | 7.50 | - | 50 | 7.40 | - |
| 2025-03-26 08:45 pm | 4.3 | 62.06 | 1.52 | 0.80 | 75.80 | 7.30 | - | 42 | 7.40 | - |
| 2025-03-26 08:30 pm | 4.3 | 62.24 | 1.51 | 0.80 | 75.90 | 7.30 | - | 45 | 7.40 | - |
| 2025-03-26 08:15 pm | 4.3 | 62.24 | 1.48 | 0.80 | 78.30 | 7.60 | - | 42 | 7.40 | - |
| 2025-03-26 08:00 pm | 4.6 | 62.24 | 1.47 | 0.70 | 78.60 | 7.60 | - | 45 | 7.40 | - |
| 2025-03-26 07:45 pm | 4.6 | 62.24 | 1.44 | 0.70 | 79.20 | 7.70 | - | 44 | 7.40 | - |
| 2025-03-26 07:30 pm | 4.6 | 62.42 | 1.42 | 0.70 | 79.80 | 7.70 | - | 44 | 7.50 | - |
| 2025-03-26 07:15 pm | 4.9 | 62.42 | 1.39 | 0.70 | 80.60 | 7.80 | - | 43 | 7.50 | - |
| 2025-03-26 07:00 pm | 4.9 | 62.42 | 1.35 | 0.70 | 81.10 | 7.80 | - | 42 | 7.50 | - |
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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