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): | 5.2 ft |
 Ocean Temperature (OTMP): | 54.32 °F |
| Conductivity (COND): | 9.22 mS/cm |
| Salinity (SAL): | 5.20 psu |
| Oxygen Saturation (O2PCT): | 67.5% |
| Oxygen Concentration (O2PPM): | 7.00 ppm |
| Turbidity (TURB): | 19 FTU |
| pH (PH): | 7.30 |
| TIME (PST) |
DEPTH ft |
OTMP °F |
COND mS/cm |
SAL psu |
O2% % |
O2PPM ppm |
CLCON ug/l |
TURB FTU |
PH |
EH mV |
|---|---|---|---|---|---|---|---|---|---|---|
| 2025-12-26 01:15 am | 5.2 | 54.14 | 8.98 | 5.00 | 65.60 | 6.80 | - | 19 | 7.20 | - |
| 2025-12-26 01:00 am | 5.6 | 54.32 | 9.12 | 5.10 | 67.20 | 7.00 | - | 20 | 7.30 | - |
| 2025-12-26 12:45 am | 5.6 | 54.32 | 9.04 | 5.10 | 66.50 | 6.90 | - | 19 | 7.30 | - |
| 2025-12-26 12:30 am | 5.6 | 54.32 | 9.07 | 5.10 | 67.20 | 7.00 | - | 17 | 7.30 | - |
| 2025-12-26 12:15 am | 5.6 | 54.32 | 9.06 | 5.10 | 67.60 | 7.00 | - | 20 | 7.30 | - |
| 2025-12-26 12:00 am | 5.6 | 54.32 | 9.06 | 5.10 | 67.60 | 7.00 | - | 20 | 7.30 | - |
| 2025-12-25 11:45 pm | 5.9 | 54.32 | 8.92 | 5.00 | 67.40 | 7.00 | - | 19 | 7.30 | - |
| 2025-12-25 11:30 pm | 5.9 | 54.32 | 8.94 | 5.00 | 68.00 | 7.00 | - | 20 | 7.30 | - |
| 2025-12-25 11:15 pm | 5.9 | 54.32 | 8.93 | 5.00 | 68.40 | 7.10 | - | 19 | 7.30 | - |
| 2025-12-25 11:00 pm | 6.2 | 54.32 | 8.96 | 5.00 | 68.90 | 7.10 | - | 18 | 7.30 | - |
| 2025-12-25 10:45 pm | 6.2 | 54.32 | 8.99 | 5.10 | 69.20 | 7.20 | - | 17 | 7.30 | - |
| 2025-12-25 10:30 pm | 6.2 | 54.32 | 8.97 | 5.00 | 69.70 | 7.20 | - | 17 | 7.30 | - |
| 2025-12-25 10:15 pm | 6.6 | 54.32 | 8.97 | 5.00 | 70.30 | 7.30 | - | 18 | 7.30 | - |
| 2025-12-25 10:00 pm | 6.6 | 54.32 | 9.00 | 5.10 | 71.00 | 7.40 | - | 18 | 7.30 | - |
| 2025-12-25 09:45 pm | 6.9 | 54.32 | 9.02 | 5.10 | 71.60 | 7.40 | - | 17 | 7.30 | - |
| 2025-12-25 09:30 pm | 6.9 | 54.32 | 8.97 | 5.00 | 72.20 | 7.50 | - | 19 | 7.30 | - |
| 2025-12-25 09:15 pm | 7.2 | 54.32 | 9.02 | 5.10 | 72.90 | 7.50 | - | 19 | 7.30 | - |
| 2025-12-25 09:00 pm | 7.5 | 54.32 | 9.02 | 5.10 | 73.90 | 7.70 | - | 19 | 7.30 | - |
| 2025-12-25 08:45 pm | 7.5 | 54.32 | 9.05 | 5.10 | 74.70 | 7.70 | - | 21 | 7.40 | - |
| 2025-12-25 08:30 pm | 7.9 | 54.32 | 9.05 | 5.10 | 75.70 | 7.80 | - | 21 | 7.40 | - |
| 2025-12-25 08:15 pm | 7.9 | 54.32 | 9.01 | 5.10 | 76.80 | 7.90 | - | 23 | 7.40 | - |
| 2025-12-25 08:00 pm | 8.2 | 54.32 | 8.95 | 5.00 | 77.60 | 8.00 | - | 25 | 7.40 | - |
| 2025-12-25 07:45 pm | 8.2 | 54.32 | 8.84 | 5.00 | 78.40 | 8.10 | - | 31 | 7.40 | - |
| 2025-12-25 07:30 pm | 8.5 | 54.14 | 8.69 | 4.90 | 79.50 | 8.30 | - | 37 | 7.40 | - |
| 2025-12-25 07:15 pm | 8.5 | 54.14 | 8.49 | 4.80 | 81.00 | 8.40 | - | 42 | 7.40 | - |
| 2025-12-25 07:00 pm | 8.9 | 53.96 | 8.28 | 4.60 | 82.20 | 8.60 | - | 36 | 7.50 | - |
| 2025-12-25 06:45 pm | 9.2 | 53.96 | 8.06 | 4.50 | 83.30 | 8.70 | - | 22 | 7.50 | - |
| 2025-12-25 06:30 pm | 9.2 | 53.78 | 8.02 | 4.50 | 83.40 | 8.70 | - | 22 | 7.50 | - |
| 2025-12-25 06:15 pm | 9.2 | 53.78 | 8.02 | 4.50 | 83.90 | 8.80 | - | 20 | 7.50 | - |
| 2025-12-25 06:00 pm | 9.2 | 53.78 | 8.02 | 4.50 | 84.10 | 8.80 | - | 24 | 7.50 | - |
| 2025-12-25 05:45 pm | 9.2 | 53.78 | 7.96 | 4.40 | 84.20 | 8.80 | - | 36 | 7.50 | - |
| 2025-12-25 05:30 pm | 9.2 | 53.96 | 7.97 | 4.40 | 84.00 | 8.80 | - | 34 | 7.50 | - |
| 2025-12-25 05:15 pm | 9.2 | 53.96 | 8.07 | 4.50 | 83.40 | 8.70 | - | 31 | 7.50 | - |
| 2025-12-25 05:00 pm | 9.2 | 53.96 | 8.25 | 4.60 | 82.20 | 8.60 | - | 31 | 7.50 | - |
| 2025-12-25 04:45 pm | 9.2 | 54.14 | 8.41 | 4.70 | 81.10 | 8.40 | - | 33 | 7.40 | - |
| 2025-12-25 04:30 pm | 9.2 | 54.14 | 8.58 | 4.80 | 80.50 | 8.40 | - | 31 | 7.40 | - |
| 2025-12-25 04:15 pm | 9.2 | 54.32 | 8.69 | 4.90 | 79.00 | 8.20 | - | 28 | 7.40 | - |
| 2025-12-25 04:00 pm | 8.9 | 54.32 | 8.84 | 5.00 | 78.50 | 8.10 | - | 27 | 7.40 | - |
| 2025-12-25 03:45 pm | 8.9 | 54.32 | 8.87 | 5.00 | 78.60 | 8.10 | - | 27 | 7.40 | - |
| 2025-12-25 03:30 pm | 8.9 | 54.32 | 8.82 | 5.00 | 78.60 | 8.10 | - | 29 | 7.40 | - |
| 2025-12-25 03:15 pm | 8.9 | 54.32 | 8.61 | 4.80 | 79.10 | 8.20 | - | 35 | 7.40 | - |
| 2025-12-25 03:00 pm | 8.5 | 54.32 | 8.94 | 5.00 | 78.50 | 8.10 | - | 20 | 7.40 | - |
| 2025-12-25 02:45 pm | 8.2 | 54.50 | 9.33 | 5.30 | 78.00 | 8.00 | - | 17 | 7.40 | - |
| 2025-12-25 02:30 pm | 8.2 | 54.68 | 9.88 | 5.60 | 78.40 | 8.10 | - | 17 | 7.40 | - |
| 2025-12-25 02:15 pm | 8.2 | 54.68 | 9.90 | 5.60 | 78.30 | 8.10 | - | 17 | 7.40 | - |
| 2025-12-25 02:00 pm | 7.9 | 54.68 | 9.90 | 5.60 | 78.80 | 8.10 | - | 17 | 7.40 | - |
| 2025-12-25 01:45 pm | 7.9 | 54.68 | 9.89 | 5.60 | 78.90 | 8.10 | - | 17 | 7.40 | - |
| 2025-12-25 01:30 pm | 7.9 | 54.50 | 9.71 | 5.50 | 78.80 | 8.10 | - | 16 | 7.40 | - |
| 2025-12-25 01:15 pm | 7.5 | 54.50 | 9.55 | 5.40 | 71.00 | 7.30 | - | 17 | 7.30 | - |
| 2025-12-25 01:00 pm | 7.5 | 54.32 | 9.54 | 5.40 | 71.20 | 7.40 | - | 17 | 7.30 | - |
| 2025-12-25 12:45 pm | 7.5 | 54.32 | 9.58 | 5.40 | 71.20 | 7.40 | - | 20 | 7.30 | - |
| 2025-12-25 12:30 pm | 7.5 | 54.32 | 9.55 | 5.40 | 71.40 | 7.40 | - | 19 | 7.30 | - |
| 2025-12-25 12:15 pm | 7.2 | 54.32 | 9.56 | 5.40 | 71.10 | 7.30 | - | 17 | 7.30 | - |
| 2025-12-25 12:00 pm | 7.2 | 54.32 | 9.50 | 5.40 | 71.30 | 7.40 | - | 18 | 7.30 | - |
| 2025-12-25 11:45 am | 7.2 | 54.32 | 9.48 | 5.40 | 71.70 | 7.40 | - | 19 | 7.30 | - |
| 2025-12-25 11:30 am | 7.2 | 54.32 | 9.46 | 5.30 | 72.00 | 7.50 | - | 21 | 7.30 | - |
| 2025-12-25 11:15 am | 7.5 | 54.32 | 9.38 | 5.30 | 72.20 | 7.50 | - | 22 | 7.30 | - |
| 2025-12-25 11:00 am | 7.5 | 54.14 | 9.37 | 5.30 | 72.80 | 7.50 | - | 24 | 7.30 | - |
| 2025-12-25 10:45 am | 7.9 | 54.14 | 9.36 | 5.30 | 73.50 | 7.60 | - | 27 | 7.30 | - |
| 2025-12-25 10:30 am | 7.9 | 54.14 | 9.30 | 5.20 | 74.20 | 7.70 | - | 31 | 7.30 | - |
| 2025-12-25 10:15 am | 7.9 | 54.14 | 9.18 | 5.20 | 75.20 | 7.80 | - | 34 | 7.40 | - |
| 2025-12-25 10:00 am | 8.2 | 53.96 | 8.99 | 5.10 | 76.70 | 8.00 | - | 43 | 7.40 | - |
| 2025-12-25 09:45 am | 8.2 | 53.78 | 8.62 | 4.80 | 78.70 | 8.20 | - | 47 | 7.40 | - |
| 2025-12-25 09:30 am | 8.2 | 53.60 | 8.06 | 4.50 | 81.40 | 8.50 | - | 148 | 7.40 | - |
| 2025-12-25 09:15 am | 8.5 | 53.42 | 7.72 | 4.30 | 83.30 | 8.80 | - | 54 | 7.50 | - |
| 2025-12-25 09:00 am | 8.9 | 53.42 | 7.78 | 4.30 | 84.30 | 8.90 | - | 47 | 7.50 | - |
| 2025-12-25 08:45 am | 9.2 | 53.60 | 8.04 | 4.50 | 84.20 | 8.80 | - | 47 | 7.50 | - |
| 2025-12-25 08:30 am | 9.2 | 53.60 | 8.32 | 4.70 | 83.80 | 8.80 | - | 36 | 7.50 | - |
| 2025-12-25 08:15 am | 9.2 | 53.78 | 8.85 | 5.00 | 83.20 | 8.70 | - | 28 | 7.50 | - |
| 2025-12-25 08:00 am | 9.5 | 53.78 | 9.14 | 5.10 | 82.80 | 8.60 | - | 26 | 7.50 | - |
| 2025-12-25 07:45 am | 9.5 | 53.78 | 8.98 | 5.00 | 83.20 | 8.70 | - | 31 | 7.50 | - |
| 2025-12-25 07:30 am | 9.5 | 53.78 | 8.66 | 4.90 | 83.60 | 8.70 | - | 31 | 7.50 | - |
| 2025-12-25 07:15 am | 9.5 | 53.60 | 8.38 | 4.70 | 83.90 | 8.80 | - | 32 | 7.50 | - |
| 2025-12-25 07:00 am | 9.5 | 53.60 | 8.23 | 4.60 | 84.10 | 8.80 | - | 35 | 7.50 | - |
| 2025-12-25 06:45 am | 9.5 | 53.60 | 8.11 | 4.50 | 84.30 | 8.80 | - | 33 | 7.50 | - |
| 2025-12-25 06:30 am | 9.5 | 53.60 | 7.96 | 4.40 | 84.60 | 8.90 | - | 31 | 7.50 | - |
| 2025-12-25 06:15 am | 9.5 | 53.60 | 7.83 | 4.40 | 84.80 | 8.90 | - | 32 | 7.50 | - |
| 2025-12-25 06:00 am | 9.2 | 53.60 | 7.67 | 4.30 | 84.80 | 8.90 | - | 34 | 7.50 | - |
| 2025-12-25 05:45 am | 9.2 | 53.42 | 7.54 | 4.20 | 85.10 | 8.90 | - | 34 | 7.50 | - |
| 2025-12-25 05:30 am | 9.2 | 53.42 | 7.43 | 4.10 | 85.10 | 9.00 | - | 36 | 7.50 | - |
| 2025-12-25 05:15 am | 9.2 | 53.60 | 7.40 | 4.10 | 85.00 | 8.90 | - | 43 | 7.50 | - |
| 2025-12-25 05:00 am | 9.2 | 53.60 | 7.43 | 4.10 | 84.70 | 8.90 | - | 50 | 7.50 | - |
| 2025-12-25 04:45 am | 8.9 | 53.78 | 7.96 | 4.40 | 83.10 | 8.70 | - | 32 | 7.50 | - |
| 2025-12-25 04:30 am | 8.9 | 53.96 | 8.54 | 4.80 | 81.50 | 8.50 | - | 29 | 7.50 | - |
| 2025-12-25 04:15 am | 8.5 | 54.32 | 9.75 | 5.50 | 79.20 | 8.20 | - | 26 | 7.40 | - |
| 2025-12-25 04:00 am | 8.5 | 54.50 | 10.07 | 5.70 | 77.80 | 8.00 | - | 30 | 7.40 | - |
| 2025-12-25 03:45 am | 8.2 | 54.68 | 10.47 | 6.00 | 76.40 | 7.80 | - | 35 | 7.40 | - |
| 2025-12-25 03:30 am | 7.9 | 54.68 | 10.65 | 6.10 | 76.00 | 7.80 | - | 38 | 7.40 | - |
| 2025-12-25 03:15 am | 7.5 | 54.68 | 10.71 | 6.10 | 75.70 | 7.70 | - | 31 | 7.40 | - |
| 2025-12-25 03:00 am | 7.2 | 54.86 | 10.72 | 6.10 | 75.40 | 7.70 | - | 24 | 7.40 | - |
| 2025-12-25 02:45 am | 6.9 | 55.04 | 10.66 | 6.10 | 74.20 | 7.60 | - | 21 | 7.40 | - |
| 2025-12-25 02:30 am | 6.6 | 55.04 | 10.72 | 6.10 | 74.40 | 7.60 | - | 20 | 7.40 | - |
| 2025-12-25 02:15 am | 6.2 | 55.04 | 10.74 | 6.10 | 74.50 | 7.60 | - | 18 | 7.40 | - |
| 2025-12-25 02:00 am | 5.9 | 55.22 | 10.77 | 6.10 | 74.40 | 7.60 | - | 20 | 7.40 | - |
Historical data for station RYEC1 are available at the NERRS website.
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