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): | 55.40 °F |
| Conductivity (COND): | 36.51 mS/cm |
| Salinity (SAL): | 23.10 psu |
| Oxygen Saturation (O2PCT): | 91.5% |
| Oxygen Concentration (O2PPM): | 8.30 ppm |
| Turbidity (TURB): | 6 FTU |
| pH (PH): | 8.00 |
| TIME (PST) |
DEPTH ft |
OTMP °F |
COND mS/cm |
SAL psu |
O2% % |
O2PPM ppm |
CLCON ug/l |
TURB FTU |
PH |
EH mV |
|---|---|---|---|---|---|---|---|---|---|---|
| 2026-02-22 12:45 am | 3.6 | 55.40 | 35.81 | 22.60 | 93.40 | 8.60 | - | 6 | 8.00 | - |
| 2026-02-22 12:30 am | 3.6 | 55.40 | 35.02 | 22.10 | 94.00 | 8.70 | - | 6 | 8.10 | - |
| 2026-02-22 12:15 am | 3.6 | 55.40 | 34.28 | 21.50 | 95.70 | 8.80 | - | 7 | 8.10 | - |
| 2026-02-22 12:00 am | 3.6 | 55.40 | 33.58 | 21.10 | 98.70 | 9.10 | - | 7 | 8.20 | - |
| 2026-02-21 11:45 pm | 3.6 | 55.40 | 32.36 | 20.20 | 104.60 | 9.70 | - | 8 | 8.40 | - |
| 2026-02-21 11:30 pm | 3.6 | 55.58 | 31.39 | 19.60 | 112.90 | 10.50 | - | 8 | 8.50 | - |
| 2026-02-21 11:15 pm | 3.6 | 55.76 | 31.62 | 19.70 | 121.10 | 11.20 | - | 9 | 8.60 | - |
| 2026-02-21 11:00 pm | 3.6 | 56.12 | 31.72 | 19.80 | 125.00 | 11.60 | - | 9 | 8.70 | - |
| 2026-02-21 10:45 pm | 3.6 | 56.12 | 31.75 | 19.80 | 127.00 | 11.70 | - | 10 | 8.70 | - |
| 2026-02-21 10:30 pm | 3.6 | 56.30 | 32.07 | 20.00 | 129.10 | 11.90 | - | 10 | 8.70 | - |
| 2026-02-21 10:15 pm | 3.6 | 56.12 | 32.65 | 20.40 | 132.70 | 12.20 | - | 9 | 8.80 | - |
| 2026-02-21 10:00 pm | 3.6 | 56.12 | 33.30 | 20.90 | 135.00 | 12.40 | - | 9 | 8.80 | - |
| 2026-02-21 09:45 pm | 3.6 | 55.94 | 34.80 | 21.90 | 143.20 | 13.10 | - | 7 | 8.90 | - |
| 2026-02-21 09:30 pm | 3.6 | 56.66 | 37.36 | 23.70 | 157.70 | 14.10 | - | 5 | 9.00 | - |
| 2026-02-21 09:15 pm | 3.6 | 56.66 | 37.54 | 23.80 | 157.70 | 14.10 | - | 5 | 9.00 | - |
| 2026-02-21 09:00 pm | 3.6 | 56.66 | 37.04 | 23.50 | 158.80 | 14.30 | - | 5 | 8.90 | - |
| 2026-02-21 08:45 pm | 3.6 | 56.48 | 36.69 | 23.20 | 163.40 | 14.70 | - | 5 | 9.00 | - |
| 2026-02-21 08:30 pm | 3.6 | 56.66 | 36.68 | 23.20 | 168.20 | 15.10 | - | 5 | 9.00 | - |
| 2026-02-21 08:15 pm | 3.6 | 56.66 | 36.53 | 23.10 | 172.30 | 15.50 | - | 6 | 9.00 | - |
| 2026-02-21 08:00 pm | 3.6 | 56.84 | 36.40 | 23.00 | 174.80 | 15.70 | - | 6 | 9.00 | - |
| 2026-02-21 07:45 pm | 3.6 | 57.56 | 36.59 | 23.20 | - | - | - | 5 | 9.00 | - |
| 2026-02-21 07:30 pm | 3.6 | 57.56 | 36.54 | 23.10 | - | - | - | 5 | 9.00 | - |
| 2026-02-21 07:15 pm | 3.6 | 57.74 | 36.45 | 23.10 | - | - | - | 6 | 9.00 | - |
| 2026-02-21 07:00 pm | 3.6 | 58.10 | 36.40 | 23.00 | - | - | - | 8 | 9.00 | - |
| 2026-02-21 06:45 pm | 3.6 | 58.46 | 36.32 | 23.00 | - | - | - | 5 | 9.00 | - |
| 2026-02-21 06:30 pm | 3.6 | 58.46 | 36.08 | 22.80 | - | - | - | 8 | 8.90 | - |
| 2026-02-21 06:15 pm | 3.6 | 58.10 | 35.81 | 22.60 | - | - | - | 7 | 8.80 | - |
| 2026-02-21 06:00 pm | 3.6 | 58.28 | 35.63 | 22.50 | - | - | - | 7 | 8.80 | - |
| 2026-02-21 05:45 pm | 3.6 | 57.74 | 35.45 | 22.40 | 174.70 | 15.60 | - | 7 | 8.70 | - |
| 2026-02-21 05:30 pm | 3.6 | 56.66 | 35.50 | 22.40 | 147.70 | 13.30 | - | 7 | 8.40 | - |
| 2026-02-21 05:15 pm | 3.6 | 56.12 | 35.16 | 22.20 | 132.00 | 12.00 | - | 7 | 8.30 | - |
| 2026-02-21 05:00 pm | 3.6 | 56.12 | 35.09 | 22.10 | 124.00 | 11.30 | - | 9 | 8.20 | - |
| 2026-02-21 04:45 pm | 3.6 | 55.76 | 34.92 | 22.00 | 120.50 | 11.00 | - | 7 | 8.20 | - |
| 2026-02-21 04:30 pm | 3.6 | 55.76 | 34.82 | 21.90 | 121.10 | 11.10 | - | 7 | 8.20 | - |
| 2026-02-21 04:15 pm | 3.6 | 55.58 | 33.87 | 21.30 | 102.80 | 9.50 | - | 7 | 8.10 | - |
| 2026-02-21 04:00 pm | 3.6 | 55.94 | 33.30 | 20.90 | 107.70 | 9.90 | - | 7 | 8.10 | - |
| 2026-02-21 03:45 pm | 3.6 | 55.58 | 33.61 | 21.10 | 107.70 | 9.90 | - | 6 | 8.10 | - |
| 2026-02-21 03:30 pm | 3.6 | 55.22 | 33.99 | 21.30 | 102.90 | 9.50 | - | 7 | 8.10 | - |
| 2026-02-21 03:15 pm | 3.6 | 55.04 | 34.60 | 21.80 | 102.90 | 9.50 | - | 7 | 8.10 | - |
| 2026-02-21 03:00 pm | 3.6 | 54.86 | 35.02 | 22.10 | 105.10 | 9.70 | - | 8 | 8.10 | - |
| 2026-02-21 02:45 pm | 3.6 | 54.50 | 35.61 | 22.50 | 103.40 | 9.60 | - | 6 | 8.10 | - |
| 2026-02-21 02:30 pm | 3.6 | 54.32 | 35.93 | 22.70 | 107.30 | 10.00 | - | 7 | 8.20 | - |
| 2026-02-21 02:15 pm | 3.6 | 54.14 | 35.96 | 22.70 | 110.10 | 10.20 | - | 7 | 8.20 | - |
| 2026-02-21 02:00 pm | 3.6 | 54.14 | 35.65 | 22.50 | 111.30 | 10.40 | - | 7 | 8.20 | - |
| 2026-02-21 01:45 pm | 3.6 | 54.14 | 35.19 | 22.20 | 115.00 | 10.70 | - | 7 | 8.30 | - |
| 2026-02-21 01:30 pm | 3.6 | 53.78 | 35.13 | 22.10 | 118.20 | 11.10 | - | 7 | 8.40 | - |
| 2026-02-21 01:15 pm | 3.6 | 53.24 | 35.31 | 22.20 | 123.40 | 11.60 | - | 8 | 8.40 | - |
| 2026-02-21 01:00 pm | 3.6 | 52.88 | 34.51 | 21.70 | 130.80 | 12.40 | - | 10 | 8.50 | - |
| 2026-02-21 12:45 pm | 3.6 | 53.06 | 33.85 | 21.20 | 133.90 | 12.70 | - | 10 | 8.50 | - |
| 2026-02-21 12:30 pm | 3.6 | 53.42 | 33.10 | 20.70 | 134.20 | 12.70 | - | 11 | 8.50 | - |
| 2026-02-21 12:15 pm | 3.6 | 53.42 | 33.15 | 20.70 | 132.30 | 12.60 | - | 11 | 8.50 | - |
| 2026-02-21 12:00 pm | 3.6 | 52.70 | 34.06 | 21.40 | 136.70 | 13.00 | - | 10 | 8.60 | - |
| 2026-02-21 11:45 am | 3.6 | 52.34 | 35.03 | 22.00 | 144.40 | 13.80 | - | 10 | 8.60 | - |
| 2026-02-21 11:30 am | 3.6 | 51.80 | 36.25 | 22.90 | 147.70 | 14.10 | - | 9 | 8.70 | - |
| 2026-02-21 11:15 am | 3.6 | 51.98 | 37.21 | 23.50 | 150.40 | 14.30 | - | 7 | 8.70 | - |
| 2026-02-21 11:00 am | 3.6 | 51.98 | 37.31 | 23.60 | 142.40 | 13.50 | - | 8 | 8.70 | - |
| 2026-02-21 10:45 am | 3.6 | 51.26 | 37.77 | 23.90 | 143.50 | 13.70 | - | 6 | 8.60 | - |
| 2026-02-21 10:30 am | 3.6 | 50.90 | 37.97 | 24.00 | 138.20 | 13.20 | - | 6 | 8.60 | - |
| 2026-02-21 10:15 am | 3.6 | 50.90 | 37.90 | 24.00 | 130.90 | 12.50 | - | 6 | 8.60 | - |
| 2026-02-21 10:00 am | 3.6 | 50.72 | 37.71 | 23.90 | 121.80 | 11.70 | - | 5 | 8.50 | - |
| 2026-02-21 09:45 am | 3.6 | 50.54 | 37.60 | 23.80 | 118.80 | 11.40 | - | 5 | 8.50 | - |
| 2026-02-21 09:30 am | 3.6 | 50.36 | 37.10 | 23.40 | 113.70 | 11.00 | - | 6 | 8.50 | - |
| 2026-02-21 09:15 am | 3.6 | 50.18 | 36.99 | 23.30 | 109.30 | 10.60 | - | 6 | 8.50 | - |
| 2026-02-21 09:00 am | 3.6 | 49.82 | 37.05 | 23.40 | 103.80 | 10.10 | - | 6 | 8.50 | - |
| 2026-02-21 08:45 am | 3.6 | 49.64 | 37.09 | 23.40 | 97.70 | 9.50 | - | 6 | 8.50 | - |
| 2026-02-21 08:30 am | 3.6 | 49.64 | 37.17 | 23.40 | 97.70 | 9.50 | - | 6 | 8.50 | - |
| 2026-02-21 08:15 am | 3.6 | 49.46 | 37.23 | 23.50 | 92.40 | 9.00 | - | 6 | 8.40 | - |
| 2026-02-21 08:00 am | 3.6 | 49.28 | 37.21 | 23.50 | 93.20 | 9.10 | - | 5 | 8.40 | - |
| 2026-02-21 07:45 am | 3.6 | 49.28 | 37.21 | 23.50 | 92.00 | 9.00 | - | 6 | 8.40 | - |
| 2026-02-21 07:30 am | 3.6 | 49.10 | 37.20 | 23.50 | 87.70 | 8.60 | - | 7 | 8.40 | - |
| 2026-02-21 07:15 am | 3.6 | 49.10 | 37.22 | 23.50 | 90.50 | 8.90 | - | 10 | 8.40 | - |
| 2026-02-21 07:00 am | 3.6 | 49.10 | 37.09 | 23.40 | 90.20 | 8.90 | - | 8 | 8.40 | - |
| 2026-02-21 06:45 am | 3.6 | 49.28 | 37.41 | 23.60 | 86.60 | 8.50 | - | 9 | 8.30 | - |
| 2026-02-21 06:30 am | 3.6 | 49.64 | 37.94 | 24.00 | 81.20 | 7.90 | - | 6 | 8.20 | - |
| 2026-02-21 06:15 am | 3.6 | 50.18 | 38.41 | 24.30 | 76.90 | 7.40 | - | 5 | 8.10 | - |
| 2026-02-21 06:00 am | 3.6 | 50.54 | 38.58 | 24.40 | 75.80 | 7.30 | - | 5 | 8.00 | - |
| 2026-02-21 05:45 am | 3.6 | 50.72 | 38.58 | 24.50 | 77.60 | 7.40 | - | 5 | 8.00 | - |
| 2026-02-21 05:30 am | 3.6 | 51.26 | 38.65 | 24.50 | 76.90 | 7.30 | - | 5 | 8.00 | - |
| 2026-02-21 05:15 am | 3.6 | 51.98 | 38.98 | 24.80 | 75.60 | 7.10 | - | 6 | 7.90 | - |
| 2026-02-21 05:00 am | 3.6 | 52.34 | 38.84 | 24.70 | 77.10 | 7.20 | - | 7 | 7.90 | - |
| 2026-02-21 04:45 am | 3.6 | 53.96 | 39.31 | 25.00 | 71.90 | 6.60 | - | 5 | 7.80 | - |
| 2026-02-21 04:30 am | 3.6 | 54.14 | 39.82 | 25.40 | 73.00 | 6.70 | - | 5 | 7.80 | - |
| 2026-02-21 04:15 am | 3.6 | 53.96 | 38.67 | 24.60 | 82.40 | 7.60 | - | 6 | 7.90 | - |
| 2026-02-21 04:00 am | 3.6 | 53.60 | 37.37 | 23.70 | 80.80 | 7.50 | - | 6 | 7.90 | - |
| 2026-02-21 03:45 am | 3.6 | 53.96 | 38.18 | 24.20 | 83.30 | 7.70 | - | 6 | 7.90 | - |
| 2026-02-21 03:30 am | 3.6 | 54.32 | 39.34 | 25.10 | 84.90 | 7.80 | - | 5 | 7.90 | - |
| 2026-02-21 03:15 am | 3.6 | 54.50 | 39.97 | 25.50 | 87.60 | 8.00 | - | 5 | 7.90 | - |
| 2026-02-21 03:00 am | 3.6 | 54.68 | 40.54 | 25.90 | 89.00 | 8.10 | - | 5 | 7.90 | - |
| 2026-02-21 02:45 am | 3.6 | 54.68 | 40.53 | 25.90 | 89.50 | 8.10 | - | 6 | 7.90 | - |
| 2026-02-21 02:30 am | 3.6 | 54.68 | 40.33 | 25.80 | 91.10 | 8.30 | - | 6 | 7.90 | - |
| 2026-02-21 02:15 am | 3.6 | 54.86 | 40.42 | 25.80 | 91.80 | 8.30 | - | 6 | 8.00 | - |
| 2026-02-21 02:00 am | 3.6 | 54.86 | 40.30 | 25.70 | 92.10 | 8.30 | - | 6 | 8.00 | - |
| 2026-02-21 01:45 am | 3.6 | 54.68 | 39.62 | 25.30 | 92.70 | 8.40 | - | 7 | 8.00 | - |
| 2026-02-21 01:30 am | 3.6 | 54.50 | 38.68 | 24.60 | 94.40 | 8.60 | - | 6 | 8.00 | - |
| 2026-02-21 01:15 am | 3.6 | 54.32 | 38.07 | 24.20 | 95.70 | 8.80 | - | 6 | 8.00 | - |
| 2026-02-21 01:00 am | 3.6 | 54.14 | 37.58 | 23.80 | 97.10 | 8.90 | - | 6 | 8.00 | - |
Historical data for station EHSC1 are available at the NERRS website.
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