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 ELQC1 - South Marsh, Elkhorn Slough Reserve, CA
Owned and maintained by National Estuarine Research Reserve System
NERRS Water Quality Station
36.818 N 121.739 W (36°49'5" N 121°44'22" 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): | 2.0 ft |
 Ocean Temperature (OTMP): | 63.68 °F |
| Conductivity (COND): | 50.54 mS/cm |
| Salinity (SAL): | 33.20 psu |
| Oxygen Concentration (O2PCT): | 76.1% |
| Oxygen Concentration (O2PPM): | 6.00 ppm |
| Turbidity (TURB): | 5 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 2025-04-21 03:00 pm | 1.6 | 64.04 | 50.56 | 33.20 | 80.70 | 6.30 | - | 5 | 7.90 | - |
| 2025-04-21 02:45 pm | 1.6 | 65.12 | 50.52 | 33.20 | 90.10 | 7.00 | - | 5 | 7.90 | - |
| 2025-04-21 02:30 pm | 1.3 | 66.20 | 50.49 | 33.20 | 95.60 | 7.30 | - | 6 | 8.00 | - |
| 2025-04-21 02:15 pm | 1.3 | 66.56 | 50.52 | 33.20 | 97.20 | 7.40 | - | 6 | 8.00 | - |
| 2025-04-21 02:00 pm | 1.0 | 66.74 | 50.52 | 33.20 | 99.90 | 7.60 | - | 5 | 8.00 | - |
| 2025-04-21 01:45 pm | 1.0 | 66.92 | 50.53 | 33.20 | 100.00 | 7.60 | - | 6 | 8.00 | - |
| 2025-04-21 01:30 pm | 1.0 | 67.10 | 50.54 | 33.20 | 98.90 | 7.50 | - | 7 | 8.00 | - |
| 2025-04-21 01:15 pm | 0.7 | 67.10 | 50.55 | 33.20 | 98.90 | 7.50 | - | 6 | 8.00 | - |
| 2025-04-21 01:00 pm | 0.7 | 67.10 | 50.57 | 33.20 | 96.90 | 7.30 | - | 5 | 8.00 | - |
| 2025-04-21 12:45 pm | 0.7 | 66.56 | 50.56 | 33.20 | 93.40 | 7.10 | - | 6 | 8.00 | - |
| 2025-04-21 12:30 pm | 0.7 | 66.74 | 50.55 | 33.20 | 93.60 | 7.10 | - | 6 | 8.00 | - |
| 2025-04-21 12:15 pm | 0.7 | 66.38 | 50.56 | 33.20 | 87.90 | 6.70 | - | 5 | 7.90 | - |
| 2025-04-21 12:00 pm | 0.7 | 66.20 | 50.54 | 33.20 | 90.50 | 6.90 | - | 6 | 8.00 | - |
| 2025-04-21 11:45 am | 0.7 | 66.02 | 50.55 | 33.20 | 89.60 | 6.80 | - | 5 | 8.00 | - |
| 2025-04-21 11:30 am | 0.7 | 65.84 | 50.54 | 33.20 | 88.20 | 6.70 | - | 5 | 7.90 | - |
| 2025-04-21 11:15 am | 0.7 | 65.48 | 50.52 | 33.20 | 91.30 | 7.00 | - | 5 | 8.00 | - |
| 2025-04-21 11:00 am | 0.7 | 65.12 | 50.54 | 33.20 | 91.90 | 7.10 | - | 6 | 8.00 | - |
| 2025-04-21 10:45 am | 1.0 | 64.58 | 50.50 | 33.20 | 88.10 | 6.80 | - | 5 | 8.00 | - |
| 2025-04-21 10:30 am | 1.3 | 64.22 | 50.48 | 33.20 | 84.60 | 6.60 | - | 5 | 7.90 | - |
| 2025-04-21 10:15 am | 1.3 | 63.68 | 50.46 | 33.10 | 79.40 | 6.20 | - | 5 | 7.90 | - |
| 2025-04-21 10:00 am | 1.6 | 63.32 | 50.46 | 33.10 | 75.60 | 5.90 | - | 5 | 7.90 | - |
| 2025-04-21 09:45 am | 2.0 | 62.96 | 50.46 | 33.10 | 74.70 | 5.90 | - | 5 | 7.90 | - |
| 2025-04-21 09:30 am | 2.3 | 62.60 | 50.45 | 33.10 | 70.60 | 5.60 | - | 5 | 7.90 | - |
| 2025-04-21 09:15 am | 2.6 | 62.42 | 50.42 | 33.10 | 69.50 | 5.50 | - | 4 | 7.90 | - |
| 2025-04-21 09:00 am | 2.6 | 62.06 | 50.42 | 33.10 | 68.40 | 5.50 | - | 4 | 7.90 | - |
| 2025-04-21 08:45 am | 3.0 | 62.06 | 50.43 | 33.10 | 70.20 | 5.60 | - | 4 | 7.90 | - |
| 2025-04-21 08:30 am | 3.3 | 61.88 | 50.39 | 33.10 | 68.70 | 5.50 | - | 4 | 7.90 | - |
| 2025-04-21 08:15 am | 3.6 | 61.70 | 50.41 | 33.10 | 70.20 | 5.60 | - | 4 | 7.90 | - |
| 2025-04-21 08:00 am | 3.6 | 61.70 | 50.38 | 33.10 | 70.10 | 5.60 | - | 4 | 7.90 | - |
| 2025-04-21 07:45 am | 3.9 | 61.52 | 50.41 | 33.10 | 69.10 | 5.50 | - | 4 | 7.90 | - |
| 2025-04-21 07:30 am | 3.9 | 61.16 | 50.28 | 33.00 | 69.00 | 5.60 | - | 3 | 7.90 | - |
| 2025-04-21 07:15 am | 4.3 | 60.80 | 50.31 | 33.00 | 65.90 | 5.30 | - | 3 | 7.90 | - |
| 2025-04-21 07:00 am | 4.3 | 60.44 | 50.24 | 33.00 | 63.60 | 5.20 | - | 3 | 7.80 | - |
| 2025-04-21 06:45 am | 4.3 | 59.90 | 50.21 | 32.90 | 63.40 | 5.20 | - | 3 | 7.80 | - |
| 2025-04-21 06:30 am | 4.6 | 59.36 | 50.14 | 32.90 | 64.40 | 5.30 | - | 3 | 7.80 | - |
| 2025-04-21 06:15 am | 4.6 | 59.36 | 50.09 | 32.80 | 65.60 | 5.40 | - | 3 | 7.80 | - |
| 2025-04-21 06:00 am | 4.6 | 59.36 | 50.12 | 32.90 | 67.70 | 5.60 | - | 3 | 7.90 | - |
| 2025-04-21 05:45 am | 4.9 | 59.36 | 50.16 | 32.90 | 68.20 | 5.60 | - | 3 | 7.90 | - |
| 2025-04-21 05:30 am | 4.9 | 58.82 | 50.15 | 32.90 | 68.80 | 5.70 | - | 3 | 7.90 | - |
| 2025-04-21 05:15 am | 4.9 | 58.82 | 50.03 | 32.80 | 66.50 | 5.50 | - | 3 | 7.90 | - |
| 2025-04-21 05:00 am | 4.9 | 58.64 | 50.02 | 32.80 | 67.10 | 5.60 | - | 3 | 7.90 | - |
| 2025-04-21 04:45 am | 4.9 | 58.46 | 50.00 | 32.80 | 68.90 | 5.70 | - | 3 | 7.90 | - |
| 2025-04-21 04:30 am | 4.9 | 58.46 | 49.99 | 32.80 | 68.90 | 5.70 | - | 3 | 7.90 | - |
| 2025-04-21 04:15 am | 4.9 | 58.64 | 50.00 | 32.80 | 69.30 | 5.70 | - | 2 | 7.90 | - |
| 2025-04-21 04:00 am | 4.9 | 58.64 | 49.99 | 32.80 | 71.50 | 5.90 | - | 3 | 7.90 | - |
| 2025-04-21 03:45 am | 4.9 | 59.00 | 50.02 | 32.80 | 69.30 | 5.70 | - | 3 | 7.90 | - |
| 2025-04-21 03:30 am | 4.9 | 59.00 | 50.01 | 32.80 | 68.10 | 5.60 | - | 3 | 7.90 | - |
| 2025-04-21 03:15 am | 4.6 | 59.18 | 50.01 | 32.80 | 68.50 | 5.60 | - | 3 | 7.90 | - |
| 2025-04-21 03:00 am | 4.6 | 59.36 | 50.05 | 32.80 | 66.50 | 5.50 | - | 3 | 7.90 | - |
| 2025-04-21 02:45 am | 4.6 | 59.36 | 50.06 | 32.80 | 67.10 | 5.50 | - | 3 | 7.90 | - |
| 2025-04-21 02:30 am | 4.6 | 59.54 | 50.06 | 32.80 | 65.80 | 5.40 | - | 3 | 7.80 | - |
| 2025-04-21 02:15 am | 4.6 | 59.72 | 50.08 | 32.80 | 66.20 | 5.40 | - | 3 | 7.80 | - |
| 2025-04-21 02:00 am | 4.3 | 59.72 | 50.10 | 32.90 | 65.80 | 5.40 | - | 3 | 7.80 | - |
| 2025-04-21 01:45 am | 4.3 | 59.90 | 50.14 | 32.90 | 65.70 | 5.40 | - | 4 | 7.80 | - |
| 2025-04-21 01:30 am | 4.3 | 60.26 | 50.16 | 32.90 | 67.00 | 5.50 | - | 3 | 7.80 | - |
| 2025-04-21 01:15 am | 4.3 | 60.62 | 50.21 | 32.90 | 70.00 | 5.70 | - | 4 | 7.90 | - |
| 2025-04-21 01:00 am | 3.9 | 60.80 | 50.22 | 32.90 | 71.30 | 5.80 | - | 3 | 7.90 | - |
| 2025-04-21 12:45 am | 3.9 | 61.16 | 50.25 | 33.00 | 65.20 | 5.20 | - | 3 | 7.80 | - |
| 2025-04-21 12:30 am | 3.9 | 61.34 | 50.27 | 33.00 | 72.60 | 5.80 | - | 3 | 7.90 | - |
| 2025-04-21 12:15 am | 3.9 | 61.52 | 50.26 | 33.00 | 73.20 | 5.90 | - | 4 | 7.90 | - |
| 2025-04-21 12:00 am | 3.9 | 61.70 | 50.29 | 33.00 | 67.00 | 5.40 | - | 3 | 7.90 | - |
| 2025-04-20 11:45 pm | 3.9 | 61.52 | 50.27 | 33.00 | 67.20 | 5.40 | - | 3 | 7.90 | - |
| 2025-04-20 11:30 pm | 3.9 | 61.16 | 50.19 | 32.90 | 67.00 | 5.40 | - | 4 | 7.80 | - |
| 2025-04-20 11:15 pm | 3.9 | 60.98 | 50.19 | 32.90 | 65.50 | 5.30 | - | 4 | 7.80 | - |
| 2025-04-20 11:00 pm | 3.6 | 61.34 | 50.20 | 32.90 | 66.60 | 5.30 | - | 3 | 7.80 | - |
| 2025-04-20 10:45 pm | 3.9 | 60.98 | 50.16 | 32.90 | 63.40 | 5.10 | - | 4 | 7.80 | - |
| 2025-04-20 10:30 pm | 3.9 | 61.34 | 50.21 | 32.90 | 64.80 | 5.20 | - | 7 | 7.80 | - |
| 2025-04-20 10:15 pm | 3.9 | 61.52 | 50.22 | 33.00 | 65.50 | 5.30 | - | 3 | 7.80 | - |
| 2025-04-20 10:00 pm | 3.9 | 61.88 | 50.29 | 33.00 | 72.10 | 5.80 | - | 3 | 7.90 | - |
| 2025-04-20 09:45 pm | 3.9 | 61.16 | 50.22 | 32.90 | 66.60 | 5.40 | - | 3 | 7.80 | - |
| 2025-04-20 09:30 pm | 3.9 | 61.34 | 50.21 | 32.90 | 65.80 | 5.30 | - | 3 | 7.80 | - |
| 2025-04-20 09:15 pm | 3.9 | 61.16 | 50.22 | 33.00 | 70.90 | 5.70 | - | 4 | 7.90 | - |
| 2025-04-20 09:00 pm | 3.9 | 61.16 | 50.22 | 33.00 | 73.00 | 5.90 | - | 4 | 7.90 | - |
| 2025-04-20 08:45 pm | 3.9 | 60.62 | 50.15 | 32.90 | 65.50 | 5.30 | - | 3 | 7.80 | - |
| 2025-04-20 08:30 pm | 3.9 | 60.62 | 50.16 | 32.90 | 64.30 | 5.20 | - | 3 | 7.80 | - |
| 2025-04-20 08:15 pm | 3.9 | 60.62 | 50.15 | 32.90 | 66.50 | 5.40 | - | 3 | 7.80 | - |
| 2025-04-20 08:00 pm | 3.9 | 60.44 | 50.14 | 32.90 | 61.50 | 5.00 | - | 4 | 7.80 | - |
| 2025-04-20 07:45 pm | 3.9 | 60.44 | 50.13 | 32.90 | 62.60 | 5.10 | - | 5 | 7.80 | - |
| 2025-04-20 07:30 pm | 3.9 | 60.44 | 50.13 | 32.90 | 67.60 | 5.50 | - | 5 | 7.80 | - |
| 2025-04-20 07:15 pm | 3.9 | 60.62 | 50.15 | 32.90 | 65.50 | 5.30 | - | 4 | 7.80 | - |
| 2025-04-20 07:00 pm | 3.9 | 60.62 | 50.15 | 32.90 | 64.90 | 5.30 | - | 13 | 7.80 | - |
| 2025-04-20 06:45 pm | 3.9 | 60.62 | 50.14 | 32.90 | 69.80 | 5.70 | - | 3 | 7.80 | - |
| 2025-04-20 06:30 pm | 3.9 | 60.80 | 50.16 | 32.90 | 69.90 | 5.70 | - | 3 | 7.80 | - |
| 2025-04-20 06:15 pm | 3.9 | 60.80 | 50.16 | 32.90 | 69.80 | 5.60 | - | 4 | 7.80 | - |
| 2025-04-20 06:00 pm | 3.9 | 60.98 | 50.17 | 32.90 | 67.90 | 5.50 | - | 4 | 7.80 | - |
| 2025-04-20 05:45 pm | 3.6 | 60.98 | 50.18 | 32.90 | 71.00 | 5.70 | - | 4 | 7.80 | - |
| 2025-04-20 05:30 pm | 3.6 | 61.16 | 50.19 | 32.90 | 71.10 | 5.70 | - | 4 | 7.80 | - |
| 2025-04-20 05:15 pm | 3.6 | 61.34 | 50.20 | 32.90 | 70.40 | 5.70 | - | 4 | 7.80 | - |
| 2025-04-20 05:00 pm | 3.3 | 61.52 | 50.21 | 32.90 | 71.20 | 5.70 | - | 4 | 7.80 | - |
| 2025-04-20 04:45 pm | 3.3 | 61.70 | 50.19 | 32.90 | 70.80 | 5.70 | - | 4 | 7.80 | - |
| 2025-04-20 04:30 pm | 3.3 | 61.70 | 50.23 | 33.00 | 70.30 | 5.60 | - | 4 | 7.80 | - |
| 2025-04-20 04:15 pm | 3.0 | 61.88 | 50.24 | 33.00 | 70.00 | 5.60 | - | 4 | 7.80 | - |
| 2025-04-20 04:00 pm | 3.0 | 62.06 | 50.24 | 33.00 | 69.60 | 5.60 | - | 4 | 7.80 | - |
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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