Station EHSC1 - North Marsh, Elkhorn Slough Reserve, CA
Owned and maintained by National Estuarine Research Reserve System
NERRS Water Quality Station
36.835 N 121.738 W (36°50'5" N 121°44'18" 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): | 3.9 ft |
 Ocean Temperature (OTMP): | 58.46 °F |
| Conductivity (COND): | 48.97 mS/cm |
| Salinity (SAL): | 32.00 psu |
| Oxygen Saturation (O2PCT): | 117.8% |
| Oxygen Concentration (O2PPM): | 9.80 ppm |
| Turbidity (TURB): | 5 FTU |
| pH (PH): | 8.40 |
| TIME (PST) |
DEPTH ft |
OTMP °F |
COND mS/cm |
SAL psu |
O2% % |
O2PPM ppm |
CLCON ug/l |
TURB FTU |
PH |
EH mV |
|---|---|---|---|---|---|---|---|---|---|---|
| 2025-12-27 06:45 pm | 3.9 | 58.82 | 48.90 | 32.00 | 123.10 | 10.20 | - | 6 | 8.30 | - |
| 2025-12-27 06:30 pm | 3.9 | 59.36 | 48.79 | 31.90 | 91.20 | 7.50 | - | 5 | 8.30 | - |
| 2025-12-27 06:15 pm | 3.9 | 59.36 | 48.94 | 32.00 | 98.70 | 8.10 | - | 5 | 8.20 | - |
| 2025-12-27 06:00 pm | 3.9 | 59.54 | 48.79 | 31.90 | 82.10 | 6.80 | - | 5 | 8.20 | - |
| 2025-12-27 05:45 pm | 3.9 | 59.54 | 48.70 | 31.80 | 117.40 | 9.70 | - | 4 | 8.30 | - |
| 2025-12-27 05:30 pm | 3.9 | 59.72 | 48.66 | 31.80 | 117.40 | 9.70 | - | 5 | 8.30 | - |
| 2025-12-27 05:15 pm | 3.9 | 60.08 | 48.72 | 31.80 | 90.30 | 7.40 | - | 5 | 8.20 | - |
| 2025-12-27 05:00 pm | 3.9 | 60.26 | 48.66 | 31.80 | 117.90 | 9.70 | - | 5 | 8.30 | - |
| 2025-12-27 04:45 pm | 3.9 | 60.44 | 48.62 | 31.80 | 122.80 | 10.00 | - | 5 | 8.30 | - |
| 2025-12-27 04:30 pm | 3.9 | 60.80 | 48.62 | 31.80 | 128.40 | 10.50 | - | 5 | 8.30 | - |
| 2025-12-27 04:15 pm | 3.9 | 60.98 | 48.72 | 31.90 | 123.70 | 10.10 | - | 5 | 8.30 | - |
| 2025-12-27 04:00 pm | 3.9 | 60.98 | 48.77 | 31.90 | 125.80 | 10.20 | - | 5 | 8.30 | - |
| 2025-12-27 03:45 pm | 3.9 | 60.80 | 48.80 | 31.90 | 131.10 | 10.70 | - | 5 | 8.30 | - |
| 2025-12-27 03:30 pm | 3.9 | 60.80 | 48.88 | 32.00 | 121.10 | 9.80 | - | 5 | 8.30 | - |
| 2025-12-27 03:15 pm | 3.9 | 60.26 | 48.99 | 32.00 | 110.10 | 9.00 | - | 5 | 8.30 | - |
| 2025-12-27 03:00 pm | 3.9 | 59.72 | 49.04 | 32.10 | 103.80 | 8.50 | - | 6 | 8.30 | - |
| 2025-12-27 02:45 pm | 3.9 | 59.00 | 49.19 | 32.20 | 54.00 | 4.50 | - | 5 | 8.10 | - |
| 2025-12-27 02:30 pm | 3.9 | 58.82 | 49.16 | 32.20 | 61.20 | 5.10 | - | 5 | 8.20 | - |
| 2025-12-27 02:15 pm | 3.9 | 58.46 | 46.09 | 29.90 | 50.30 | 4.30 | - | 4 | 8.10 | - |
| 2025-12-27 02:00 pm | 3.9 | 58.28 | 49.17 | 32.20 | 83.20 | 7.00 | - | 5 | 8.20 | - |
| 2025-12-27 01:45 pm | 3.9 | 58.28 | 46.08 | 29.90 | 69.20 | 5.90 | - | 5 | 8.10 | - |
| 2025-12-27 01:30 pm | 3.9 | 58.10 | 49.23 | 32.20 | 67.10 | 5.60 | - | 4 | 8.10 | - |
| 2025-12-27 01:15 pm | 3.9 | 57.92 | 49.18 | 32.20 | 72.50 | 6.10 | - | 4 | 8.10 | - |
| 2025-12-27 01:00 pm | 3.9 | 57.92 | 49.22 | 32.20 | 49.80 | 4.20 | - | 6 | 8.10 | - |
| 2025-12-27 12:45 pm | 3.9 | 57.74 | 49.16 | 32.10 | 58.50 | 4.90 | - | 7 | 8.10 | - |
| 2025-12-27 12:30 pm | 3.9 | 57.56 | 49.14 | 32.10 | 62.20 | 5.20 | - | 5 | 8.10 | - |
| 2025-12-27 12:15 pm | 3.9 | 57.20 | 49.15 | 32.10 | 67.70 | 5.70 | - | 5 | 8.10 | - |
| 2025-12-27 12:00 pm | 3.9 | 57.02 | 49.17 | 32.10 | 77.70 | 6.60 | - | 5 | 8.10 | - |
| 2025-12-27 11:45 am | 3.9 | 56.66 | 49.19 | 32.10 | 74.50 | 6.30 | - | 5 | 8.10 | - |
| 2025-12-27 11:30 am | 3.9 | 56.66 | 49.19 | 32.10 | 70.10 | 6.00 | - | 5 | 8.10 | - |
| 2025-12-27 11:15 am | 3.9 | 56.48 | 49.29 | 32.20 | 75.80 | 6.50 | - | 4 | 8.10 | - |
| 2025-12-27 11:00 am | 3.9 | 55.94 | 49.32 | 32.20 | 66.60 | 5.70 | - | 4 | 8.10 | - |
| 2025-12-27 10:45 am | 3.9 | 55.76 | 49.31 | 32.20 | 74.00 | 6.40 | - | 10 | 8.10 | - |
| 2025-12-27 10:30 am | 3.9 | 55.58 | 49.28 | 32.20 | 77.40 | 6.70 | - | 4 | 8.10 | - |
| 2025-12-27 10:15 am | 3.9 | 55.76 | 49.31 | 32.20 | 73.00 | 6.30 | - | 5 | 8.00 | - |
| 2025-12-27 10:00 am | 3.9 | 55.58 | 48.91 | 31.90 | 76.40 | 6.60 | - | 7 | 8.10 | - |
| 2025-12-27 09:45 am | 3.9 | 55.76 | 49.31 | 32.20 | 76.90 | 6.60 | - | 4 | 8.00 | - |
| 2025-12-27 09:30 am | 3.9 | 55.58 | 49.33 | 32.20 | 72.60 | 6.30 | - | 4 | 8.00 | - |
| 2025-12-27 09:15 am | 3.9 | 55.22 | 49.27 | 32.20 | 76.40 | 6.60 | - | 4 | 8.00 | - |
| 2025-12-27 09:00 am | 3.9 | 55.58 | 49.07 | 32.00 | 73.10 | 6.30 | - | 4 | 8.00 | - |
| 2025-12-27 08:45 am | 3.9 | 55.94 | 49.29 | 32.20 | 69.30 | 5.90 | - | 3 | 8.00 | - |
| 2025-12-27 08:30 am | 3.9 | 55.94 | 49.30 | 32.20 | 63.50 | 5.40 | - | 4 | 8.00 | - |
| 2025-12-27 08:15 am | 3.9 | 56.12 | 49.30 | 32.20 | 61.70 | 5.30 | - | 4 | 8.00 | - |
| 2025-12-27 08:00 am | 3.9 | 56.12 | 49.35 | 32.20 | 70.00 | 6.00 | - | 4 | 8.00 | - |
| 2025-12-27 07:45 am | 3.9 | 56.12 | 49.35 | 32.20 | 68.30 | 5.80 | - | 4 | 8.00 | - |
| 2025-12-27 07:30 am | 3.9 | 56.30 | 49.34 | 32.20 | 71.70 | 6.10 | - | 4 | 8.00 | - |
| 2025-12-27 07:15 am | 3.9 | 56.30 | 49.38 | 32.30 | 75.40 | 6.40 | - | 4 | 8.00 | - |
| 2025-12-27 07:00 am | 3.9 | 56.48 | 49.35 | 32.30 | 77.90 | 6.60 | - | 4 | 8.00 | - |
| 2025-12-27 06:45 am | 3.9 | 56.66 | 38.91 | 24.80 | 81.60 | 7.30 | - | 4 | 8.00 | - |
| 2025-12-27 06:30 am | 3.9 | 56.84 | 48.18 | 31.40 | 82.20 | 7.00 | - | 4 | 8.00 | - |
| 2025-12-27 06:15 am | 3.9 | 56.84 | 49.48 | 32.40 | 81.90 | 6.90 | - | 5 | 8.10 | - |
| 2025-12-27 06:00 am | 3.9 | 56.84 | 49.50 | 32.40 | 84.00 | 7.10 | - | 5 | 8.10 | - |
| 2025-12-27 05:45 am | 3.9 | 56.84 | 49.50 | 32.40 | 81.30 | 6.90 | - | 4 | 8.10 | - |
| 2025-12-27 05:30 am | 3.9 | 56.66 | 49.45 | 32.30 | 84.40 | 7.20 | - | 5 | 8.10 | - |
| 2025-12-27 05:15 am | 3.9 | 56.30 | 49.42 | 32.30 | 82.10 | 7.00 | - | 5 | 8.10 | - |
| 2025-12-27 05:00 am | 3.9 | 56.30 | 49.38 | 32.30 | 81.90 | 7.00 | - | 5 | 8.10 | - |
| 2025-12-27 04:45 am | 3.9 | 56.12 | 49.32 | 32.20 | 81.20 | 6.90 | - | 7 | 8.10 | - |
| 2025-12-27 04:30 am | 3.9 | 55.94 | 49.26 | 32.20 | 80.60 | 6.90 | - | 7 | 8.10 | - |
| 2025-12-27 04:15 am | 3.9 | 55.94 | 49.24 | 32.20 | 80.00 | 6.90 | - | 5 | 8.10 | - |
| 2025-12-27 04:00 am | 3.9 | 56.12 | 49.23 | 32.20 | 80.50 | 6.90 | - | 5 | 8.10 | - |
| 2025-12-27 03:45 am | 3.9 | 56.12 | 49.19 | 32.10 | 81.00 | 6.90 | - | 5 | 8.10 | - |
| 2025-12-27 03:30 am | 3.9 | 56.12 | 49.15 | 32.10 | 81.00 | 6.90 | - | 5 | 8.10 | - |
| 2025-12-27 03:15 am | 3.9 | 56.12 | 49.10 | 32.10 | 80.10 | 6.90 | - | 5 | 8.10 | - |
| 2025-12-27 03:00 am | 3.9 | 56.12 | 49.06 | 32.00 | 82.10 | 7.00 | - | 5 | 8.10 | - |
| 2025-12-27 02:45 am | 3.9 | 56.30 | 49.04 | 32.00 | 82.00 | 7.00 | - | 4 | 8.20 | - |
| 2025-12-27 02:30 am | 3.9 | 56.30 | 49.06 | 32.00 | 80.90 | 6.90 | - | 5 | 8.20 | - |
| 2025-12-27 02:15 am | 3.9 | 56.30 | 49.11 | 32.10 | 76.70 | 6.60 | - | 4 | 8.20 | - |
| 2025-12-27 02:00 am | 3.6 | 56.30 | 49.16 | 32.10 | 76.30 | 6.50 | - | 5 | 8.30 | - |
| 2025-12-27 01:45 am | 3.6 | 56.30 | 49.24 | 32.20 | 76.50 | 6.50 | - | 5 | 8.30 | - |
| 2025-12-27 01:30 am | 3.6 | 56.48 | 49.23 | 32.20 | 74.10 | 6.30 | - | 4 | 8.30 | - |
| 2025-12-27 01:15 am | 3.6 | 56.48 | 49.26 | 32.20 | 62.70 | 5.30 | - | 4 | 8.20 | - |
| 2025-12-27 01:00 am | 3.6 | 56.48 | 49.25 | 32.20 | 67.00 | 5.70 | - | 4 | 8.20 | - |
| 2025-12-27 12:45 am | 3.6 | 56.48 | 49.21 | 32.10 | 70.50 | 6.00 | - | 5 | 8.20 | - |
| 2025-12-27 12:30 am | 3.6 | 56.48 | 49.24 | 32.20 | 80.50 | 6.90 | - | 6 | 8.20 | - |
| 2025-12-27 12:15 am | 3.6 | 56.48 | 49.23 | 32.20 | 80.50 | 6.90 | - | 6 | 8.20 | - |
| 2025-12-27 12:00 am | 3.6 | 56.66 | 49.20 | 32.10 | 80.70 | 6.90 | - | 5 | 8.20 | - |
| 2025-12-26 11:45 pm | 3.6 | 56.84 | 49.20 | 32.10 | 78.80 | 6.70 | - | 6 | 8.20 | - |
| 2025-12-26 11:30 pm | 3.6 | 56.84 | 49.17 | 32.10 | 78.20 | 6.60 | - | 5 | 8.20 | - |
| 2025-12-26 11:15 pm | 3.6 | 56.84 | 49.20 | 32.20 | 81.60 | 6.90 | - | 5 | 8.20 | - |
| 2025-12-26 11:00 pm | 3.6 | 57.02 | 49.18 | 32.10 | 83.20 | 7.10 | - | 5 | 8.30 | - |
| 2025-12-26 10:45 pm | 3.6 | 57.20 | 49.12 | 32.10 | 88.60 | 7.50 | - | 5 | 8.30 | - |
| 2025-12-26 10:30 pm | 3.6 | 57.38 | 49.08 | 32.10 | 92.70 | 7.80 | - | 5 | 8.30 | - |
| 2025-12-26 10:15 pm | 3.6 | 57.56 | 49.10 | 32.10 | 92.30 | 7.80 | - | 4 | 8.30 | - |
| 2025-12-26 10:00 pm | 3.6 | 57.56 | 49.12 | 32.10 | 94.00 | 7.90 | - | 4 | 8.30 | - |
| 2025-12-26 09:45 pm | 3.9 | 57.74 | 49.05 | 32.10 | 97.10 | 8.20 | - | 4 | 8.30 | - |
| 2025-12-26 09:30 pm | 3.9 | 57.92 | 49.06 | 32.10 | 100.30 | 8.40 | - | 4 | 8.30 | - |
| 2025-12-26 09:15 pm | 3.9 | 57.92 | 49.03 | 32.00 | 101.90 | 8.50 | - | 4 | 8.30 | - |
| 2025-12-26 09:00 pm | 3.9 | 58.10 | 49.14 | 32.10 | 104.20 | 8.70 | - | 4 | 8.30 | - |
| 2025-12-26 08:45 pm | 3.9 | 58.10 | 49.17 | 32.20 | 105.80 | 8.80 | - | 4 | 8.30 | - |
| 2025-12-26 08:30 pm | 3.9 | 58.10 | 49.15 | 32.10 | 107.90 | 9.00 | - | 4 | 8.30 | - |
| 2025-12-26 08:15 pm | 3.9 | 58.10 | 49.14 | 32.10 | 112.10 | 9.40 | - | 6 | 8.40 | - |
| 2025-12-26 08:00 pm | 3.9 | 58.28 | 49.15 | 32.10 | 113.70 | 9.50 | - | 4 | 8.40 | - |
Historical data for station EHSC1 are available at the NERRS website.
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