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): | 3.6 ft |
 Ocean Temperature (OTMP): | 59.54 °F |
| Conductivity (COND): | 50.32 mS/cm |
| Salinity (SAL): | 33.00 psu |
| Oxygen Saturation (O2PCT): | 57.9% |
| Oxygen Concentration (O2PPM): | 4.70 ppm |
| Turbidity (TURB): | 4 FTU |
| pH (PH): | 7.80 |
| TIME (PDT) |
DEPTH ft |
OTMP °F |
COND mS/cm |
SAL psu |
O2% % |
O2PPM ppm |
CLCON ug/l |
TURB FTU |
PH |
EH mV |
|---|---|---|---|---|---|---|---|---|---|---|
| 2026-04-12 08:45 am | 3.6 | 59.36 | 50.33 | 33.00 | 57.60 | 4.70 | - | 4 | 7.80 | - |
| 2026-04-12 08:30 am | 3.3 | 59.36 | 50.30 | 33.00 | 56.40 | 4.60 | - | 4 | 7.80 | - |
| 2026-04-12 08:15 am | 3.3 | 59.18 | 50.28 | 33.00 | 53.80 | 4.40 | - | 5 | 7.80 | - |
| 2026-04-12 08:00 am | 3.3 | 59.18 | 50.29 | 33.00 | 52.30 | 4.30 | - | 5 | 7.80 | - |
| 2026-04-12 07:45 am | 3.3 | 59.18 | 50.30 | 33.00 | 51.20 | 4.20 | - | 5 | 7.80 | - |
| 2026-04-12 07:30 am | 3.3 | 59.00 | 50.34 | 33.00 | 48.10 | 4.00 | - | 5 | 7.80 | - |
| 2026-04-12 07:15 am | 3.3 | 59.18 | 50.38 | 33.00 | 48.50 | 4.00 | - | 5 | 7.80 | - |
| 2026-04-12 07:00 am | 3.3 | 59.18 | 50.43 | 33.10 | 46.20 | 3.80 | - | 5 | 7.80 | - |
| 2026-04-12 06:45 am | 3.3 | 59.18 | 50.50 | 33.10 | 46.50 | 3.80 | - | 6 | 7.80 | - |
| 2026-04-12 06:30 am | 3.3 | 59.36 | 50.59 | 33.20 | 45.30 | 3.70 | - | 6 | 7.80 | - |
| 2026-04-12 06:15 am | 3.3 | 59.36 | 50.61 | 33.20 | 44.80 | 3.70 | - | 6 | 7.80 | - |
| 2026-04-12 06:00 am | 3.3 | 59.54 | 50.61 | 33.20 | 45.40 | 3.70 | - | 6 | 7.80 | - |
| 2026-04-12 05:45 am | 3.3 | 59.36 | 50.55 | 33.20 | 44.40 | 3.60 | - | 6 | 7.80 | - |
| 2026-04-12 05:30 am | 3.3 | - | 50.46 | 33.10 | 43.80 | 3.60 | - | 7 | 7.80 | - |
| 2026-04-12 05:15 am | 3.3 | 59.36 | 50.41 | 33.10 | 42.70 | 3.50 | - | 7 | 7.80 | - |
| 2026-04-12 05:00 am | 3.3 | 59.36 | 50.28 | 33.00 | 38.80 | 3.20 | - | 7 | 7.80 | - |
| 2026-04-12 04:45 am | 3.3 | 59.18 | 50.19 | 32.90 | 40.70 | 3.40 | - | 7 | 7.80 | - |
| 2026-04-12 04:30 am | 3.3 | 59.36 | 50.13 | 32.90 | 44.10 | 3.60 | - | 7 | 7.80 | - |
| 2026-04-12 04:15 am | 3.3 | 59.54 | 50.20 | 32.90 | 43.50 | 3.60 | - | 7 | 7.80 | - |
| 2026-04-12 04:00 am | 3.3 | 59.72 | 50.28 | 33.00 | 44.90 | 3.70 | - | 8 | 7.80 | - |
| 2026-04-12 03:45 am | 3.3 | 60.08 | 50.40 | 33.10 | 42.30 | 3.40 | - | 6 | 7.80 | - |
| 2026-04-12 03:30 am | 3.3 | 60.44 | 50.54 | 33.20 | 43.90 | 3.60 | - | 7 | 7.90 | - |
| 2026-04-12 03:15 am | 3.3 | 60.62 | 50.60 | 33.20 | 41.30 | 3.30 | - | 7 | 7.90 | - |
| 2026-04-12 03:00 am | 3.3 | 60.80 | 50.52 | 33.20 | 48.10 | 3.90 | - | 7 | 7.90 | - |
| 2026-04-12 02:45 am | 3.3 | 61.16 | 50.92 | 33.50 | 43.80 | 3.50 | - | 7 | 7.90 | - |
| 2026-04-12 02:30 am | 3.3 | 61.34 | 50.77 | 33.40 | 46.20 | 3.70 | - | 7 | 7.90 | - |
| 2026-04-12 02:15 am | 3.3 | 61.52 | 50.88 | 33.40 | 38.70 | 3.10 | - | 6 | 7.90 | - |
| 2026-04-12 02:00 am | 3.3 | 62.06 | 51.58 | 34.00 | 36.10 | 2.90 | - | 7 | 8.00 | - |
| 2026-04-12 01:45 am | 3.3 | 62.24 | 51.44 | 33.90 | 42.00 | 3.30 | - | 8 | 8.00 | - |
| 2026-04-12 01:30 am | 3.3 | 62.06 | 50.98 | 33.50 | 46.10 | 3.70 | - | 7 | 8.00 | - |
| 2026-04-12 01:15 am | 3.3 | 62.06 | 50.97 | 33.50 | 52.10 | 4.10 | - | 7 | 8.00 | - |
| 2026-04-12 01:00 am | 3.3 | 62.60 | 52.49 | 34.60 | 45.90 | 3.60 | - | 8 | 8.00 | - |
| 2026-04-12 12:45 am | 3.0 | 62.42 | 51.18 | 33.70 | 50.20 | 4.00 | - | 6 | 7.90 | - |
| 2026-04-12 12:30 am | 3.3 | 62.42 | 51.21 | 33.70 | 53.80 | 4.30 | - | 7 | 8.00 | - |
| 2026-04-12 12:15 am | 3.0 | 62.42 | 51.23 | 33.70 | 52.70 | 4.20 | - | 7 | 7.90 | - |
| 2026-04-12 12:00 am | 3.0 | 62.60 | 51.24 | 33.70 | 53.70 | 4.20 | - | 7 | 8.00 | - |
| 2026-04-11 11:45 pm | 3.0 | 62.60 | 51.20 | 33.70 | 55.80 | 4.40 | - | 7 | 8.00 | - |
| 2026-04-11 11:30 pm | 3.0 | 62.60 | 51.13 | 33.60 | 58.60 | 4.60 | - | 7 | 8.00 | - |
| 2026-04-11 11:15 pm | 3.0 | 62.60 | 51.07 | 33.60 | 64.20 | 5.10 | - | 7 | 8.00 | - |
| 2026-04-11 11:00 pm | 3.0 | 62.60 | 51.05 | 33.60 | 67.00 | 5.30 | - | 7 | 8.00 | - |
| 2026-04-11 10:45 pm | 3.0 | 62.78 | 51.07 | 33.60 | 67.00 | 5.30 | - | 7 | 8.00 | - |
| 2026-04-11 10:30 pm | 3.0 | 62.78 | 51.07 | 33.60 | 67.30 | 5.30 | - | 6 | 8.00 | - |
| 2026-04-11 10:15 pm | 3.0 | 62.96 | 51.07 | 33.60 | 69.60 | 5.50 | - | 7 | 8.00 | - |
| 2026-04-11 10:00 pm | 3.0 | 62.96 | 51.06 | 33.60 | 69.50 | 5.50 | - | 7 | 8.00 | - |
| 2026-04-11 09:45 pm | 3.0 | 63.14 | 51.07 | 33.60 | 69.70 | 5.50 | - | 9 | 8.00 | - |
| 2026-04-11 09:30 pm | 3.0 | 63.14 | 51.09 | 33.60 | 72.40 | 5.70 | - | 9 | 8.00 | - |
| 2026-04-11 09:15 pm | 3.0 | 63.32 | 51.12 | 33.60 | 71.10 | 5.60 | - | 9 | 8.00 | - |
| 2026-04-11 09:00 pm | 3.0 | 63.32 | 51.13 | 33.60 | 72.10 | 5.60 | - | 10 | 8.00 | - |
| 2026-04-11 08:45 pm | 3.0 | 63.50 | 51.17 | 33.70 | 74.30 | 5.80 | - | 11 | 8.00 | - |
| 2026-04-11 08:30 pm | 3.0 | 63.68 | 51.27 | 33.70 | 74.60 | 5.80 | - | 11 | 8.00 | - |
| 2026-04-11 08:15 pm | 3.0 | 63.86 | 51.43 | 33.90 | 75.50 | 5.90 | - | 12 | 8.10 | - |
| 2026-04-11 08:00 pm | 3.0 | 64.22 | 51.65 | 34.00 | 74.50 | 5.80 | - | 12 | 8.10 | - |
| 2026-04-11 07:45 pm | 3.0 | 64.40 | 51.89 | 34.20 | 77.70 | 6.00 | - | 13 | 8.20 | - |
| 2026-04-11 07:30 pm | 3.0 | 64.94 | 52.38 | 34.60 | 81.90 | 6.30 | - | 13 | 8.20 | - |
| 2026-04-11 07:15 pm | 3.0 | 65.48 | 52.87 | 34.90 | 80.80 | 6.10 | - | 11 | 8.20 | - |
| 2026-04-11 07:00 pm | 3.0 | 66.02 | 53.26 | 35.20 | 82.40 | 6.20 | - | 11 | 8.20 | - |
| 2026-04-11 06:45 pm | 3.0 | 66.56 | 53.55 | 35.40 | 79.60 | 6.00 | - | 11 | 8.20 | - |
| 2026-04-11 06:30 pm | 3.0 | 66.92 | 54.12 | 35.90 | 87.10 | 6.50 | - | 10 | 8.30 | - |
| 2026-04-11 06:15 pm | 3.0 | 67.46 | 54.67 | 36.30 | 88.60 | 6.50 | - | 10 | 8.30 | - |
| 2026-04-11 06:00 pm | 3.0 | 67.82 | 55.06 | 36.60 | 93.40 | 6.90 | - | 9 | 8.40 | - |
| 2026-04-11 05:45 pm | 3.0 | 67.82 | 55.22 | 36.70 | 91.60 | 6.70 | - | 10 | 8.40 | - |
| 2026-04-11 05:30 pm | 3.0 | 67.82 | 54.46 | 36.10 | 97.10 | 7.20 | - | 9 | 8.40 | - |
| 2026-04-11 05:15 pm | 3.0 | 68.36 | 55.25 | 36.70 | 93.40 | 6.80 | - | 9 | 8.40 | - |
| 2026-04-11 05:00 pm | 3.0 | 68.18 | 54.50 | 36.10 | 81.60 | 6.00 | - | 8 | 8.40 | - |
| 2026-04-11 04:45 pm | 3.0 | 68.18 | 54.38 | 36.00 | 108.70 | 8.00 | - | 10 | 8.50 | - |
| 2026-04-11 04:30 pm | 3.0 | 68.72 | 55.06 | 36.60 | 110.40 | 8.00 | - | 9 | 8.40 | - |
| 2026-04-11 04:15 pm | 3.0 | 68.72 | 54.57 | 36.20 | 120.90 | 8.80 | - | 10 | 8.50 | - |
| 2026-04-11 04:00 pm | 3.0 | 68.72 | 54.74 | 36.30 | 119.70 | 8.70 | - | 10 | 8.50 | - |
| 2026-04-11 03:45 pm | 3.0 | 68.54 | 54.55 | 36.20 | 116.80 | 8.50 | - | 9 | 8.50 | - |
| 2026-04-11 03:30 pm | 3.0 | 68.36 | 54.30 | 36.00 | 111.60 | 8.20 | - | 9 | 8.50 | - |
| 2026-04-11 03:15 pm | 3.0 | 68.18 | 54.34 | 36.00 | 107.30 | 7.90 | - | 9 | 8.50 | - |
| 2026-04-11 03:00 pm | 3.0 | 68.00 | 54.41 | 36.10 | 107.30 | 7.90 | - | 9 | 8.50 | - |
| 2026-04-11 02:45 pm | 3.0 | 67.64 | 54.18 | 35.90 | 108.50 | 8.00 | - | 8 | 8.40 | - |
| 2026-04-11 02:30 pm | 3.0 | 67.64 | 54.15 | 35.90 | 103.90 | 7.70 | - | 8 | 8.40 | - |
| 2026-04-11 02:15 pm | 3.0 | 67.46 | 54.14 | 35.90 | 102.10 | 7.60 | - | 8 | 8.40 | - |
| 2026-04-11 02:00 pm | 3.0 | 67.28 | 53.58 | 35.50 | 102.80 | 7.60 | - | 7 | 8.40 | - |
| 2026-04-11 01:45 pm | 3.0 | 67.10 | 53.72 | 35.60 | 93.80 | 7.00 | - | 7 | 8.30 | - |
| 2026-04-11 01:30 pm | 3.0 | 67.10 | 53.77 | 35.60 | 89.30 | 6.70 | - | 7 | 8.30 | - |
| 2026-04-11 01:15 pm | 3.0 | 66.56 | 53.82 | 35.60 | 83.20 | 6.20 | - | 8 | 8.30 | - |
| 2026-04-11 01:00 pm | 3.0 | 66.02 | 53.93 | 35.70 | 77.00 | 5.80 | - | 8 | 8.30 | - |
| 2026-04-11 12:45 pm | 3.3 | 65.48 | 53.74 | 35.60 | 71.40 | 5.40 | - | 8 | 8.30 | - |
| 2026-04-11 12:30 pm | 3.3 | 65.30 | 54.06 | 35.80 | 59.60 | 4.50 | - | 8 | 8.30 | - |
| 2026-04-11 12:15 pm | 3.3 | 64.94 | 53.37 | 35.30 | 61.70 | 4.70 | - | 8 | 8.20 | - |
| 2026-04-11 12:00 pm | 3.3 | 64.58 | 52.69 | 34.80 | 68.00 | 5.20 | - | 5 | 8.20 | - |
| 2026-04-11 11:45 am | 3.3 | 64.58 | 52.83 | 34.90 | 57.50 | 4.40 | - | 5 | 8.10 | - |
| 2026-04-11 11:30 am | 3.3 | 64.40 | 52.44 | 34.60 | 62.90 | 4.80 | - | 5 | 8.10 | - |
| 2026-04-11 11:15 am | 3.3 | 64.40 | 52.50 | 34.70 | 54.60 | 4.20 | - | 5 | 8.10 | - |
| 2026-04-11 11:00 am | 3.3 | 64.22 | 52.07 | 34.30 | 61.80 | 4.80 | - | 4 | 8.00 | - |
| 2026-04-11 10:45 am | 3.3 | 64.22 | 52.03 | 34.30 | 63.90 | 4.90 | - | 5 | 8.00 | - |
| 2026-04-11 10:30 am | 3.3 | 64.04 | 51.96 | 34.30 | 60.60 | 4.70 | - | 4 | 8.00 | - |
| 2026-04-11 10:15 am | 3.3 | 64.04 | 52.24 | 34.50 | 48.00 | 3.70 | - | 5 | 8.00 | - |
| 2026-04-11 10:00 am | 3.3 | 63.86 | 52.31 | 34.50 | 45.40 | 3.50 | - | 4 | 8.00 | - |
Historical data for station EHSC1 are available at the NERRS website.
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