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): | 8.5 ft |
 Ocean Temperature (OTMP): | 53.24 °F |
| Conductivity (COND): | 8.22 mS/cm |
| Salinity (SAL): | 4.60 psu |
| Oxygen Saturation (O2PCT): | 79.6% |
| Oxygen Concentration (O2PPM): | 8.40 ppm |
| Turbidity (TURB): | 24 FTU |
| pH (PH): | 7.50 |
| TIME (PST) |
DEPTH ft |
OTMP °F |
COND mS/cm |
SAL psu |
O2% % |
O2PPM ppm |
CLCON ug/l |
TURB FTU |
PH |
EH mV |
|---|---|---|---|---|---|---|---|---|---|---|
| 2025-12-27 05:15 am | 8.2 | 53.24 | 8.98 | 5.00 | 78.70 | 8.30 | - | 25 | 7.50 | - |
| 2025-12-27 05:00 am | 8.2 | 53.42 | 9.78 | 5.50 | 77.60 | 8.10 | - | 28 | 7.50 | - |
| 2025-12-27 04:45 am | 7.9 | 53.42 | 9.80 | 5.50 | 77.60 | 8.10 | - | 27 | 7.50 | - |
| 2025-12-27 04:30 am | 7.5 | 53.42 | 9.81 | 5.60 | 77.50 | 8.10 | - | 25 | 7.50 | - |
| 2025-12-27 04:15 am | 7.2 | 53.42 | 9.77 | 5.50 | 77.20 | 8.00 | - | 21 | 7.50 | - |
| 2025-12-27 04:00 am | 7.2 | 53.42 | 9.69 | 5.50 | 76.60 | 8.00 | - | 21 | 7.50 | - |
| 2025-12-27 03:45 am | 6.9 | 53.42 | 9.60 | 5.40 | 75.70 | 7.90 | - | 19 | 7.50 | - |
| 2025-12-27 03:30 am | 6.2 | 53.42 | 9.54 | 5.40 | 75.30 | 7.90 | - | 17 | 7.50 | - |
| 2025-12-27 03:15 am | 6.2 | 53.42 | 9.58 | 5.40 | 75.30 | 7.90 | - | 17 | 7.50 | - |
| 2025-12-27 03:00 am | 5.9 | 53.42 | 9.65 | 5.50 | 75.20 | 7.90 | - | 17 | 7.50 | - |
| 2025-12-27 02:45 am | 5.6 | 53.42 | 9.63 | 5.40 | 75.10 | 7.90 | - | 17 | 7.50 | - |
| 2025-12-27 02:30 am | 5.2 | 53.60 | 9.27 | 5.20 | 74.20 | 7.70 | - | 18 | 7.50 | - |
| 2025-12-27 02:15 am | 5.2 | 53.42 | 9.36 | 5.30 | 74.00 | 7.70 | - | 17 | 7.40 | - |
| 2025-12-27 02:00 am | 4.9 | 53.24 | 9.23 | 5.20 | 69.00 | 7.20 | - | 21 | 7.30 | - |
| 2025-12-27 01:45 am | 4.9 | 53.06 | 9.17 | 5.20 | 66.50 | 7.00 | - | 25 | 7.30 | - |
| 2025-12-27 01:30 am | 4.9 | 53.24 | 9.19 | 5.20 | 66.60 | 7.00 | - | 20 | 7.30 | - |
| 2025-12-27 01:15 am | 4.9 | 53.24 | 9.19 | 5.20 | 67.10 | 7.00 | - | 23 | 7.30 | - |
| 2025-12-27 01:00 am | 5.2 | 53.24 | 9.18 | 5.20 | 67.80 | 7.10 | - | 23 | 7.30 | - |
| 2025-12-27 12:45 am | 5.2 | 53.24 | 9.18 | 5.20 | 68.30 | 7.20 | - | 20 | 7.30 | - |
| 2025-12-27 12:30 am | 5.2 | 53.24 | 9.18 | 5.20 | 68.90 | 7.20 | - | 21 | 7.30 | - |
| 2025-12-27 12:15 am | 5.2 | 53.42 | 9.18 | 5.20 | 69.50 | 7.30 | - | 19 | 7.30 | - |
| 2025-12-27 12:00 am | 5.6 | 53.42 | 9.18 | 5.20 | 70.20 | 7.30 | - | 19 | 7.30 | - |
| 2025-12-26 11:45 pm | 5.6 | 53.42 | 9.16 | 5.20 | 71.00 | 7.40 | - | 19 | 7.30 | - |
| 2025-12-26 11:30 pm | 5.9 | 53.42 | 9.14 | 5.10 | 71.80 | 7.50 | - | 19 | 7.30 | - |
| 2025-12-26 11:15 pm | 5.9 | 53.60 | 9.13 | 5.10 | 72.40 | 7.60 | - | 19 | 7.30 | - |
| 2025-12-26 11:00 pm | 6.2 | 53.60 | 9.13 | 5.10 | 73.10 | 7.60 | - | 19 | 7.40 | - |
| 2025-12-26 10:45 pm | 6.2 | 53.60 | 9.15 | 5.20 | 73.70 | 7.70 | - | 19 | 7.40 | - |
| 2025-12-26 10:30 pm | 6.2 | 53.60 | 9.18 | 5.20 | 74.70 | 7.80 | - | 18 | 7.40 | - |
| 2025-12-26 10:15 pm | 6.6 | 53.78 | 9.20 | 5.20 | 75.20 | 7.80 | - | 18 | 7.40 | - |
| 2025-12-26 10:00 pm | 6.6 | 53.78 | 9.20 | 5.20 | 75.90 | 7.90 | - | 18 | 7.40 | - |
| 2025-12-26 09:45 pm | 6.9 | 53.78 | 9.22 | 5.20 | 76.80 | 8.00 | - | 18 | 7.40 | - |
| 2025-12-26 09:30 pm | 7.2 | 53.78 | 9.23 | 5.20 | 77.30 | 8.00 | - | 17 | 7.40 | - |
| 2025-12-26 09:15 pm | 7.2 | 53.78 | 9.21 | 5.20 | 77.90 | 8.10 | - | 19 | 7.40 | - |
| 2025-12-26 09:00 pm | 7.5 | 53.78 | 9.16 | 5.20 | 78.80 | 8.20 | - | 17 | 7.50 | - |
| 2025-12-26 08:45 pm | 7.9 | 53.96 | 9.20 | 5.20 | 79.80 | 8.30 | - | 17 | 7.50 | - |
| 2025-12-26 08:30 pm | 7.9 | 53.96 | 9.14 | 5.10 | 80.10 | 8.30 | - | 17 | 7.50 | - |
| 2025-12-26 08:15 pm | 8.2 | 53.96 | 9.03 | 5.10 | 80.20 | 8.30 | - | 18 | 7.50 | - |
| 2025-12-26 08:00 pm | 8.2 | 54.14 | 8.99 | 5.10 | 80.30 | 8.30 | - | 20 | 7.50 | - |
| 2025-12-26 07:45 pm | 8.5 | 53.96 | 8.86 | 5.00 | 80.50 | 8.40 | - | 23 | 7.50 | - |
| 2025-12-26 07:30 pm | 8.5 | 53.96 | 8.73 | 4.90 | 80.50 | 8.40 | - | 26 | 7.50 | - |
| 2025-12-26 07:15 pm | 8.9 | 53.96 | 8.40 | 4.70 | 80.80 | 8.40 | - | 21 | 7.50 | - |
| 2025-12-26 07:00 pm | 9.2 | 53.78 | 7.67 | 4.30 | 82.10 | 8.60 | - | 19 | 7.50 | - |
| 2025-12-26 06:45 pm | 9.2 | 53.78 | 7.87 | 4.40 | 81.90 | 8.60 | - | 17 | 7.50 | - |
| 2025-12-26 06:30 pm | 9.2 | 53.78 | 7.81 | 4.30 | 82.00 | 8.60 | - | 19 | 7.50 | - |
| 2025-12-26 06:15 pm | 9.2 | 53.78 | 7.79 | 4.30 | 82.20 | 8.60 | - | 19 | 7.50 | - |
| 2025-12-26 06:00 pm | 9.2 | 53.78 | 7.80 | 4.30 | 82.10 | 8.60 | - | 25 | 7.50 | - |
| 2025-12-26 05:45 pm | 9.2 | 53.78 | 7.78 | 4.30 | 82.40 | 8.60 | - | 24 | 7.50 | - |
| 2025-12-26 05:30 pm | 9.2 | 53.78 | 7.86 | 4.40 | 82.10 | 8.60 | - | 24 | 7.50 | - |
| 2025-12-26 05:15 pm | 9.2 | 53.78 | 7.96 | 4.40 | 81.40 | 8.50 | - | 26 | 7.50 | - |
| 2025-12-26 05:00 pm | 8.9 | 53.96 | 8.07 | 4.50 | 80.90 | 8.50 | - | 29 | 7.50 | - |
| 2025-12-26 04:45 pm | 8.9 | 53.96 | 8.11 | 4.50 | 80.90 | 8.40 | - | 25 | 7.50 | - |
| 2025-12-26 04:30 pm | 8.5 | 53.96 | 8.04 | 4.50 | 81.40 | 8.50 | - | 26 | 7.50 | - |
| 2025-12-26 04:15 pm | 8.5 | 53.96 | 8.32 | 4.70 | 81.20 | 8.50 | - | 20 | 7.50 | - |
| 2025-12-26 04:00 pm | 8.5 | 54.14 | 8.66 | 4.90 | 80.40 | 8.40 | - | 23 | 7.50 | - |
| 2025-12-26 03:45 pm | 8.2 | 54.32 | 9.27 | 5.20 | 80.00 | 8.30 | - | 18 | 7.50 | - |
| 2025-12-26 03:30 pm | 8.2 | 54.50 | 9.66 | 5.50 | 80.50 | 8.30 | - | 18 | 7.50 | - |
| 2025-12-26 03:15 pm | 7.9 | 54.50 | 9.59 | 5.40 | 81.00 | 8.40 | - | 19 | 7.50 | - |
| 2025-12-26 03:00 pm | 7.5 | 54.50 | 9.78 | 5.50 | 80.80 | 8.30 | - | 15 | 7.50 | - |
| 2025-12-26 02:45 pm | 7.5 | 54.50 | 9.92 | 5.60 | 80.70 | 8.30 | - | 17 | 7.50 | - |
| 2025-12-26 02:30 pm | 7.5 | 54.50 | 9.93 | 5.60 | 80.90 | 8.30 | - | 18 | 7.50 | - |
| 2025-12-26 02:15 pm | 7.2 | 54.50 | 9.78 | 5.50 | 80.00 | 8.20 | - | 19 | 7.50 | - |
| 2025-12-26 02:00 pm | 7.2 | 53.96 | 9.54 | 5.40 | 73.90 | 7.70 | - | 20 | 7.40 | - |
| 2025-12-26 01:45 pm | 6.9 | 53.96 | 9.58 | 5.40 | 73.80 | 7.70 | - | 21 | 7.40 | - |
| 2025-12-26 01:30 pm | 6.9 | 53.96 | 9.49 | 5.40 | 74.00 | 7.70 | - | 21 | 7.40 | - |
| 2025-12-26 01:15 pm | 6.9 | 53.96 | 9.45 | 5.30 | 74.40 | 7.70 | - | 19 | 7.40 | - |
| 2025-12-26 01:00 pm | 6.9 | 53.96 | 9.31 | 5.20 | 75.10 | 7.80 | - | 20 | 7.40 | - |
| 2025-12-26 12:45 pm | 6.9 | 53.96 | 9.14 | 5.10 | 75.60 | 7.90 | - | 19 | 7.40 | - |
| 2025-12-26 12:30 pm | 7.2 | 53.96 | 9.08 | 5.10 | 76.20 | 7.90 | - | 19 | 7.40 | - |
| 2025-12-26 12:15 pm | 7.2 | 53.96 | 9.09 | 5.10 | 75.90 | 7.90 | - | 20 | 7.40 | - |
| 2025-12-26 12:00 pm | 7.2 | 53.96 | 9.05 | 5.10 | 76.00 | 7.90 | - | 21 | 7.40 | - |
| 2025-12-26 11:45 am | 7.2 | 53.78 | 9.04 | 5.10 | 76.20 | 7.90 | - | 20 | 7.40 | - |
| 2025-12-26 11:30 am | 7.5 | 53.78 | 8.98 | 5.10 | 76.60 | 8.00 | - | 21 | 7.40 | - |
| 2025-12-26 11:15 am | 7.5 | 53.78 | 8.92 | 5.00 | 77.00 | 8.00 | - | 22 | 7.40 | - |
| 2025-12-26 11:00 am | 7.9 | 53.78 | 8.83 | 5.00 | 77.60 | 8.10 | - | 23 | 7.40 | - |
| 2025-12-26 10:45 am | 7.9 | 53.60 | 8.70 | 4.90 | 78.10 | 8.20 | - | 25 | 7.40 | - |
| 2025-12-26 10:30 am | 8.2 | 53.60 | 8.60 | 4.80 | 78.40 | 8.20 | - | 25 | 7.40 | - |
| 2025-12-26 10:15 am | 8.2 | 53.60 | 8.45 | 4.70 | 79.00 | 8.30 | - | 30 | 7.40 | - |
| 2025-12-26 10:00 am | 8.2 | 53.42 | 8.16 | 4.60 | 79.80 | 8.40 | - | 37 | 7.50 | - |
| 2025-12-26 09:45 am | 8.5 | 53.42 | 7.77 | 4.30 | 81.00 | 8.50 | - | 41 | 7.50 | - |
| 2025-12-26 09:30 am | 8.9 | 53.42 | 7.24 | 4.00 | 82.50 | 8.70 | - | 40 | 7.50 | - |
| 2025-12-26 09:15 am | 8.9 | 53.24 | 6.93 | 3.80 | 83.90 | 8.90 | - | 33 | 7.50 | - |
| 2025-12-26 09:00 am | 9.2 | 53.24 | 7.07 | 3.90 | 84.10 | 8.90 | - | 27 | 7.50 | - |
| 2025-12-26 08:45 am | 9.2 | 53.24 | 7.32 | 4.10 | 83.70 | 8.80 | - | 24 | 7.50 | - |
| 2025-12-26 08:30 am | 9.5 | 53.42 | 7.42 | 4.10 | 83.80 | 8.80 | - | 25 | 7.50 | - |
| 2025-12-26 08:15 am | 9.5 | 53.42 | 7.38 | 4.10 | 84.00 | 8.90 | - | 22 | 7.50 | - |
| 2025-12-26 08:00 am | 9.5 | 53.42 | 7.37 | 4.10 | 84.10 | 8.90 | - | 27 | 7.50 | - |
| 2025-12-26 07:45 am | 9.5 | 53.24 | 7.24 | 4.00 | 84.20 | 8.90 | - | 31 | 7.50 | - |
| 2025-12-26 07:30 am | 9.5 | 53.24 | 7.13 | 3.90 | 84.30 | 8.90 | - | 31 | 7.50 | - |
| 2025-12-26 07:15 am | 9.5 | 53.24 | 6.95 | 3.80 | 84.40 | 8.90 | - | 30 | 7.50 | - |
| 2025-12-26 07:00 am | 9.5 | 53.24 | 6.79 | 3.70 | 84.40 | 8.90 | - | 32 | 7.50 | - |
| 2025-12-26 06:45 am | 9.2 | 53.24 | 6.69 | 3.70 | 84.10 | 8.90 | - | 30 | 7.50 | - |
| 2025-12-26 06:30 am | 9.2 | 53.42 | 6.62 | 3.60 | 84.00 | 8.90 | - | 33 | 7.50 | - |
| 2025-12-26 06:15 am | 9.2 | 53.42 | 6.56 | 3.60 | 84.30 | 8.90 | - | 33 | 7.50 | - |
| 2025-12-26 06:00 am | 9.2 | 53.42 | 6.62 | 3.60 | 84.00 | 8.90 | - | 31 | 7.50 | - |
Historical data for station RYEC1 are available at the NERRS website.
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