NDBC has recently revised the NDBC Handbook of Automated Data Quality Control Checks and Procedures. The new document can be found on our Publications page.
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)
Stations with recent data Stations with no data in last 8 hours(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): | 58.28 °F |
| Conductivity (COND): | 49.50 mS/cm |
| Salinity (SAL): | 32.40 psu |
| Oxygen Concentration (O2PCT): | 58.4% |
| Oxygen Concentration (O2PPM): | 4.90 ppm |
| Turbidity (TURB): | 8 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 2025-04-18 04:45 am | 3.6 | 58.28 | 49.47 | 32.40 | 61.90 | 5.20 | - | 8 | 7.90 | - |
| 2025-04-18 04:30 am | 3.6 | 58.10 | 49.45 | 32.40 | 65.30 | 5.50 | - | 8 | 7.90 | - |
| 2025-04-18 04:15 am | 3.6 | 58.10 | 49.44 | 32.30 | 68.10 | 5.70 | - | 8 | 7.90 | - |
| 2025-04-18 04:00 am | 3.6 | 58.10 | 49.43 | 32.30 | 70.90 | 5.90 | - | 8 | 7.90 | - |
| 2025-04-18 03:45 am | 3.6 | 58.10 | 49.42 | 32.30 | 72.20 | 6.00 | - | 9 | 7.90 | - |
| 2025-04-18 03:30 am | 3.6 | 58.10 | 49.40 | 32.30 | 72.90 | 6.10 | - | 9 | 7.90 | - |
| 2025-04-18 03:15 am | 3.6 | 58.28 | 49.40 | 32.30 | 72.40 | 6.00 | - | 9 | 7.90 | - |
| 2025-04-18 03:00 am | 3.6 | 58.46 | 49.40 | 32.30 | 70.90 | 5.90 | - | 9 | 7.90 | - |
| 2025-04-18 02:45 am | 3.6 | 58.82 | 49.42 | 32.30 | 71.20 | 5.90 | - | 9 | 7.90 | - |
| 2025-04-18 02:30 am | 3.3 | 59.00 | 49.43 | 32.40 | 73.90 | 6.10 | - | 9 | 8.00 | - |
| 2025-04-18 02:15 am | 3.3 | 59.18 | 49.43 | 32.40 | 74.50 | 6.20 | - | 9 | 8.00 | - |
| 2025-04-18 02:00 am | 3.3 | 59.54 | 49.43 | 32.40 | 74.60 | 6.10 | - | 9 | 8.00 | - |
| 2025-04-18 01:45 am | 3.3 | 59.72 | 49.42 | 32.40 | 77.60 | 6.40 | - | 10 | 8.00 | - |
| 2025-04-18 01:30 am | 3.3 | 59.90 | 49.42 | 32.40 | 78.60 | 6.40 | - | 10 | 8.00 | - |
| 2025-04-18 01:15 am | 3.3 | 59.90 | 49.42 | 32.40 | 80.60 | 6.60 | - | 10 | 8.00 | - |
| 2025-04-18 01:00 am | 3.3 | 60.08 | 49.41 | 32.40 | 83.10 | 6.80 | - | 10 | 8.00 | - |
| 2025-04-18 12:45 am | 3.3 | 60.26 | 49.40 | 32.30 | 85.40 | 7.00 | - | 10 | 8.10 | - |
| 2025-04-18 12:30 am | 3.3 | 60.44 | 49.40 | 32.30 | 85.90 | 7.00 | - | 10 | 8.10 | - |
| 2025-04-18 12:15 am | 3.3 | 60.62 | 49.40 | 32.30 | 87.60 | 7.10 | - | 10 | 8.10 | - |
| 2025-04-18 12:00 am | 3.3 | 60.80 | 49.39 | 32.30 | 90.40 | 7.30 | - | 11 | 8.10 | - |
| 2025-04-17 11:45 pm | 3.3 | 60.98 | 49.39 | 32.30 | 93.80 | 7.60 | - | 10 | 8.10 | - |
| 2025-04-17 11:30 pm | 3.3 | 61.16 | 49.38 | 32.30 | 93.80 | 7.60 | - | 11 | 8.10 | - |
| 2025-04-17 11:15 pm | 3.3 | 61.34 | 49.39 | 32.30 | 95.90 | 7.70 | - | 11 | 8.20 | - |
| 2025-04-17 11:00 pm | 3.3 | 61.52 | 49.39 | 32.40 | 92.70 | 7.50 | - | 11 | 8.20 | - |
| 2025-04-17 10:45 pm | 3.3 | 61.52 | 49.38 | 32.30 | 94.20 | 7.60 | - | 11 | 8.20 | - |
| 2025-04-17 10:30 pm | 3.3 | 61.52 | 49.40 | 32.40 | 93.90 | 7.60 | - | 10 | 8.20 | - |
| 2025-04-17 10:15 pm | 3.3 | 61.34 | 49.39 | 32.30 | 89.10 | 7.20 | - | 10 | 8.20 | - |
| 2025-04-17 10:00 pm | 3.3 | 61.34 | 49.36 | 32.30 | 88.20 | 7.10 | - | 11 | 8.10 | - |
| 2025-04-17 09:45 pm | 3.3 | 61.52 | 49.32 | 32.30 | 87.50 | 7.00 | - | 11 | 8.10 | - |
| 2025-04-17 09:30 pm | 3.3 | 61.52 | 49.32 | 32.30 | 89.50 | 7.20 | - | 11 | 8.10 | - |
| 2025-04-17 09:15 pm | 3.3 | 61.70 | 49.27 | 32.30 | 88.20 | 7.10 | - | 11 | 8.10 | - |
| 2025-04-17 09:00 pm | 3.3 | 61.88 | 49.25 | 32.30 | 86.30 | 6.90 | - | 11 | 8.10 | - |
| 2025-04-17 08:45 pm | 3.3 | 62.06 | 49.25 | 32.20 | 82.70 | 6.60 | - | 11 | 8.00 | - |
| 2025-04-17 08:30 pm | 3.3 | 62.06 | 49.24 | 32.20 | 86.30 | 6.90 | - | 11 | 8.00 | - |
| 2025-04-17 08:15 pm | 3.3 | 62.24 | 49.24 | 32.20 | 84.40 | 6.70 | - | 10 | 8.00 | - |
| 2025-04-17 08:00 pm | 3.3 | 62.42 | 49.25 | 32.30 | 80.50 | 6.40 | - | 20 | 8.00 | - |
| 2025-04-17 07:45 pm | 3.3 | 62.42 | 49.25 | 32.30 | 85.00 | 6.80 | - | 12 | 8.00 | - |
| 2025-04-17 07:30 pm | 3.3 | 62.60 | 49.26 | 32.30 | 83.90 | 6.70 | - | 13 | 8.00 | - |
| 2025-04-17 07:15 pm | 3.3 | 62.78 | 49.27 | 32.30 | 86.70 | 6.90 | - | 33 | 8.00 | - |
| 2025-04-17 07:00 pm | 3.3 | 62.78 | 49.28 | 32.30 | 92.80 | 7.40 | - | 11 | 8.00 | - |
| 2025-04-17 06:45 pm | 3.3 | 62.96 | 49.28 | 32.30 | 94.30 | 7.50 | - | 11 | 8.10 | - |
| 2025-04-17 06:30 pm | 3.3 | 63.14 | 49.29 | 32.30 | 94.40 | 7.50 | - | 11 | 8.10 | - |
| 2025-04-17 06:15 pm | 3.3 | 63.14 | 49.29 | 32.30 | 96.20 | 7.60 | - | 10 | 8.10 | - |
| 2025-04-17 06:00 pm | 3.3 | 63.32 | 49.29 | 32.30 | 93.50 | 7.40 | - | 12 | 8.10 | - |
| 2025-04-17 05:45 pm | 3.3 | 63.50 | 49.30 | 32.30 | 98.70 | 7.80 | - | 13 | 8.10 | - |
| 2025-04-17 05:30 pm | 3.3 | 63.68 | 49.30 | 32.30 | 88.50 | 7.00 | - | 13 | 8.10 | - |
| 2025-04-17 05:15 pm | 3.3 | 63.68 | 49.30 | 32.30 | 91.60 | 7.20 | - | 10 | 8.00 | - |
| 2025-04-17 05:00 pm | 3.3 | 63.86 | 49.31 | 32.30 | 88.50 | 7.00 | - | 32 | 8.00 | - |
| 2025-04-17 04:45 pm | 3.3 | 64.04 | 49.31 | 32.30 | 93.50 | 7.30 | - | 11 | 8.10 | - |
| 2025-04-17 04:30 pm | 3.3 | 64.40 | 49.32 | 32.30 | 96.90 | 7.60 | - | 9 | 8.10 | - |
| 2025-04-17 04:15 pm | 3.3 | 64.76 | 49.37 | 32.40 | 100.10 | 7.80 | - | 10 | 8.10 | - |
| 2025-04-17 04:00 pm | 3.3 | 64.94 | 49.41 | 32.40 | 105.00 | 8.20 | - | 9 | 8.10 | - |
| 2025-04-17 03:45 pm | 3.3 | 64.76 | 49.42 | 32.40 | 107.40 | 8.30 | - | 10 | 8.10 | - |
| 2025-04-17 03:30 pm | 3.0 | 64.40 | 49.41 | 32.40 | 101.80 | 7.90 | - | 11 | 8.10 | - |
| 2025-04-17 03:15 pm | 3.0 | 64.40 | 49.45 | 32.40 | 99.60 | 7.80 | - | 11 | 8.10 | - |
| 2025-04-17 03:00 pm | 3.0 | 64.58 | 49.51 | 32.50 | 105.70 | 8.20 | - | 12 | 8.20 | - |
| 2025-04-17 02:45 pm | 3.0 | 64.94 | 49.67 | 32.60 | 110.50 | 8.60 | - | 11 | 8.20 | - |
| 2025-04-17 02:30 pm | 3.0 | 65.12 | 49.86 | 32.70 | 114.00 | 8.80 | - | 9 | 8.30 | - |
| 2025-04-17 02:15 pm | 3.0 | 65.30 | 49.98 | 32.80 | 117.10 | 9.00 | - | 10 | 8.30 | - |
| 2025-04-17 02:00 pm | 3.0 | 65.48 | 50.11 | 32.90 | 121.40 | 9.30 | - | 9 | 8.40 | - |
| 2025-04-17 01:45 pm | 3.0 | 65.48 | 50.14 | 32.90 | 118.70 | 9.10 | - | 10 | 8.30 | - |
| 2025-04-17 01:30 pm | 3.0 | 65.30 | 50.12 | 32.90 | 108.10 | 8.30 | - | 9 | 8.30 | - |
| 2025-04-17 01:15 pm | 3.0 | 64.76 | 50.02 | 32.80 | 103.90 | 8.10 | - | 9 | 8.40 | - |
| 2025-04-17 01:00 pm | 3.0 | 64.76 | 50.02 | 32.80 | 104.50 | 8.10 | - | 8 | 8.40 | - |
| 2025-04-17 12:45 pm | 3.0 | 64.40 | 50.01 | 32.80 | 92.00 | 7.20 | - | 10 | 8.40 | - |
| 2025-04-17 12:30 pm | 3.0 | - | 49.98 | 32.80 | 92.50 | 7.20 | - | 10 | 8.40 | - |
| 2025-04-17 12:15 pm | 3.0 | 63.86 | 49.96 | 32.80 | 88.40 | 6.90 | - | 10 | 8.40 | - |
| 2025-04-17 12:00 pm | 3.0 | 63.68 | 49.91 | 32.70 | 77.60 | 6.10 | - | 11 | 8.30 | - |
| 2025-04-17 11:45 am | 3.0 | 63.32 | 49.86 | 32.70 | 69.90 | 5.50 | - | 12 | 8.30 | - |
| 2025-04-17 11:30 am | 3.0 | 63.14 | 49.83 | 32.70 | 62.10 | 4.90 | - | 14 | 8.20 | - |
| 2025-04-17 11:15 am | 3.0 | 62.96 | 49.80 | 32.70 | 54.40 | 4.30 | - | 14 | 8.20 | - |
| 2025-04-17 11:00 am | 3.3 | 62.60 | 49.79 | 32.60 | 51.60 | 4.10 | - | 9 | 8.20 | - |
| 2025-04-17 10:45 am | 3.3 | 62.42 | 49.76 | 32.60 | 43.00 | 3.40 | - | 12 | 8.10 | - |
| 2025-04-17 10:30 am | 3.3 | 62.06 | 49.75 | 32.60 | 36.80 | 2.90 | - | 10 | 8.10 | - |
| 2025-04-17 10:15 am | 3.3 | 61.70 | 49.74 | 32.60 | 28.00 | 2.20 | - | 10 | 8.10 | - |
| 2025-04-17 10:00 am | 3.3 | 61.52 | 49.70 | 32.60 | 22.80 | 1.80 | - | 9 | 8.00 | - |
| 2025-04-17 09:45 am | 3.3 | 61.34 | 49.68 | 32.60 | 18.90 | 1.50 | - | 9 | 8.00 | - |
| 2025-04-17 09:30 am | 3.3 | 61.16 | 49.65 | 32.50 | 16.20 | 1.30 | - | 9 | 8.00 | - |
| 2025-04-17 09:15 am | 3.3 | 60.98 | 49.64 | 32.50 | 13.30 | 1.10 | - | 9 | 7.90 | - |
| 2025-04-17 09:00 am | 3.3 | 60.80 | 49.60 | 32.50 | 11.00 | 0.90 | - | 9 | 7.90 | - |
| 2025-04-17 08:45 am | 3.3 | 60.44 | 49.56 | 32.50 | 9.30 | 0.80 | - | 10 | 7.80 | - |
| 2025-04-17 08:30 am | 3.3 | 60.26 | 49.55 | 32.50 | 9.10 | 0.70 | - | 13 | 7.80 | - |
| 2025-04-17 08:15 am | 3.3 | 59.90 | 49.52 | 32.40 | 9.20 | 0.80 | - | 13 | 7.80 | - |
| 2025-04-17 08:00 am | 3.3 | 59.54 | 49.50 | 32.40 | 10.00 | 0.80 | - | 23 | 7.70 | - |
Links which are specific to this station are listed below:
Real Time Data in tabular form for the last forty-five days.
Historical Data & Climatic Summaries for quality controlled data for prior months and years.
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