Station List

Station CHQO3 - Winchester Arm, South Slough Reserve, OR

Owned and maintained by National Estuarine Research Reserve System
NERRS Water Quality Station
43.282 N 124.320 W (43°16'57" N 124°19'13" W)

Meteorological Observations from Nearby Stations and Ships Image indicating link to RSS feed of recent meteorological observations near station CHQO3

Regional HF Radar Surface Current Observations

Large icon indicates selected station.
yellow diamond Stations with recent data
red diamond Stations with no data in last 8 hours
(24 hours for tsunami stations)

Ocean Conditions at CHQO3 as of
(8:15 pm PST on 12/28/2025)
0415 GMT on 12/29/2025:

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): 4.3 ft
5-day plot - Ocean Temperature Ocean Temperature (OTMP):49.46 °F
5-day plot - Conductivity Conductivity (COND):18.92 mS/cm
5-day plot - Salinity Salinity (SAL):11.20 psu
5-day plot - Oxygen Saturation Oxygen Saturation (O2PCT): 91.8%
5-day plot - Oxygen Concentration Oxygen Concentration (O2PPM): 9.70 ppm
5-day plot - Turbidity Turbidity (TURB): 4 FTU
5-day plot - pH pH (PH): 7.20
Previous observations
TIME
(PST)		 DEPTH
ft		 5-day plot - Ocean Temperature
OTMP
°F		 5-day plot - Conductivity
COND
mS/cm		 5-day plot - Salinity
SAL
psu		 5-day plot - Oxygen Saturation
O2%
%		 5-day plot - Oxygen Concentration
O2PPM
ppm		 5-day plot - Chlorophyll
CLCON
ug/l		 5-day plot - Turbidity
TURB
FTU		 5-day plot - pH
PH
 		 5-day plot - Eh
EH
mV
2025-12-28 08:00 pm 4.349.2818.0910.7092.10 9.80- 4 7.20-
2025-12-28 07:45 pm 4.649.4618.3910.9092.70 9.80- 4 7.20-
2025-12-28 07:30 pm 4.649.2816.74 9.8093.00 9.90- 4 7.10-
2025-12-28 07:15 pm 4.649.1013.98 8.1089.50 9.70- 5 7.00-
2025-12-28 07:00 pm 4.948.9213.12 7.6089.00 9.70- 5 6.90-
2025-12-28 06:45 pm 4.948.9210.14 5.7087.60 9.70- 6 6.80-
2025-12-28 06:30 pm 4.648.74 9.27 5.2087.70 9.70- 6 6.80-
2025-12-28 06:15 pm 4.648.74 7.97 4.4088.00 9.80- 7 6.70-
2025-12-28 06:00 pm 4.648.20 5.28 2.9086.00 9.80- 8 6.60-
2025-12-28 05:45 pm 4.647.66 2.08 1.1089.1010.30- 7 6.50-
2025-12-28 05:30 pm 4.347.84 1.10 0.6091.4010.60- 10 6.50-
2025-12-28 05:15 pm 4.347.84 1.03 0.5091.6010.60- 9 6.50-
2025-12-28 05:00 pm 3.947.48 0.83 0.4091.0010.60- 6 6.50-
2025-12-28 04:45 pm 3.647.30 0.76 0.4091.3010.70- 7 6.50-
2025-12-28 04:30 pm 3.647.30 0.69 0.3091.2010.70- 7 6.50-
2025-12-28 04:15 pm 3.347.12 0.70 0.4091.3010.70- 6 6.50-
2025-12-28 04:00 pm 3.047.12 0.73 0.4091.3010.70- 6 6.50-
2025-12-28 03:45 pm 3.047.12 0.51 0.3091.1010.70- 6 6.50-
2025-12-28 03:30 pm 2.646.58 0.37 0.2091.0010.70- 5 6.50-
2025-12-28 03:15 pm 2.646.76 0.36 0.2090.6010.70- 7 6.50-
2025-12-28 03:00 pm 2.346.76 0.37 0.2091.4010.80- 6 6.50-
2025-12-28 02:45 pm 2.346.76 0.37 0.2089.7010.60- 9 6.50-
2025-12-28 02:30 pm 2.046.58 0.35 0.2090.9010.70- 8 6.50-
2025-12-28 02:15 pm 1.646.58 0.34 0.2091.5010.80- 8 6.50-
2025-12-28 02:00 pm 1.646.58 0.34 0.2091.5010.80- 9 6.50-
2025-12-28 01:45 pm 1.646.58 0.34 0.2091.3010.80- 9 6.50-
2025-12-28 01:30 pm 1.646.58 0.35 0.2091.3010.80- 9 6.50-
2025-12-28 01:15 pm 1.646.40 0.34 0.2091.1010.80- 11 6.50-
2025-12-28 01:00 pm 1.646.40 0.35 0.2090.8010.80- 14 6.50-
2025-12-28 12:45 pm 1.346.22 0.35 0.2090.5010.70- 14 6.50-
2025-12-28 12:30 pm 1.646.22 0.34 0.2090.1010.70- 16 6.50-
2025-12-28 12:15 pm 2.046.04 0.35 0.2089.6010.60- 13 6.50-
2025-12-28 12:00 pm 2.046.04 0.36 0.2088.8010.60- 15 6.50-
2025-12-28 11:45 am 2.045.86 0.40 0.2087.9010.50- 13 6.60-
2025-12-28 11:30 am 2.345.68 0.47 0.2087.3010.40- 13 6.60-
2025-12-28 11:15 am 2.645.68 0.70 0.3086.4010.30- 11 6.70-
2025-12-28 11:00 am 3.045.68 1.88 1.0085.3010.10- 12 6.70-
2025-12-28 10:45 am 3.346.04 5.39 2.9083.70 9.80- 6 6.80-
2025-12-28 10:30 am 3.646.7610.64 6.0081.80 9.30- 4 6.90-
2025-12-28 10:15 am 3.947.8418.0110.6079.80 8.60- 4 7.00-
2025-12-28 10:00 am 4.348.7422.1613.3078.30 8.30- 4 7.20-
2025-12-28 09:45 am 4.648.9223.1714.0078.20 8.20- 4 7.20-
2025-12-28 09:30 am 4.649.1023.7414.4078.10 8.20- 5 7.30-
2025-12-28 09:15 am 4.949.1024.0314.6078.30 8.20- 4 7.30-
2025-12-28 09:00 am 5.249.1026.0415.9076.40 7.90- 5 7.30-
2025-12-28 08:45 am 5.649.1024.0614.6078.90 8.20- 4 7.30-
2025-12-28 08:30 am 5.649.1024.2214.7079.00 8.20- 4 7.30-
2025-12-28 08:15 am 5.949.1024.5014.9079.10 8.20- 4 7.30-
2025-12-28 08:00 am 6.248.9225.4515.5080.00 8.30- 5 7.40-
2025-12-28 07:45 am 6.648.9226.1515.9079.90 8.30- 5 7.40-
2025-12-28 07:30 am 6.648.9224.7215.0080.00 8.30- 4 7.40-
2025-12-28 07:15 am 6.948.9225.4015.5079.80 8.30- 4 7.40-
2025-12-28 07:00 am 6.948.9224.9415.1081.00 8.40- 4 7.40-
2025-12-28 06:45 am 7.248.7426.0915.9081.10 8.40- 4 7.40-
2025-12-28 06:30 am 7.248.7425.4315.5081.30 8.40- 5 7.40-
2025-12-28 06:15 am 7.548.7425.4715.5081.80 8.50- 5 7.40-
2025-12-28 06:00 am 7.548.7424.9515.2081.60 8.50- 5 7.40-
2025-12-28 05:45 am 7.548.9224.8615.1081.50 8.50- 5 7.40-
2025-12-28 05:30 am 7.249.1024.7615.0081.30 8.40- 5 7.40-
2025-12-28 05:15 am 7.249.1024.6615.0081.00 8.40- 6 7.40-
2025-12-28 05:00 am 6.949.2824.4814.8080.80 8.40- 6 7.40-
2025-12-28 04:45 am 6.949.4624.2414.7080.70 8.40- 6 7.30-
2025-12-28 04:30 am 6.649.4623.3614.1080.30 8.40- 6 7.30-
2025-12-28 04:15 am 6.249.2822.5113.6080.00 8.40- 6 7.20-
2025-12-28 04:00 am 5.949.2821.9413.2080.00 8.40- 6 7.20-
2025-12-28 03:45 am 5.649.2820.5512.3079.80 8.40- 7 7.10-
2025-12-28 03:30 am 4.948.9217.3410.2080.20 8.60- 8 7.00-
2025-12-28 03:15 am 4.648.3812.93 7.4081.10 8.90- 7 6.80-
2025-12-28 03:00 am 4.347.48 6.10 3.3083.90 9.60- 9 6.50-
2025-12-28 02:45 am 4.346.40 0.66 0.3086.5010.20- 8 6.50-
2025-12-28 02:30 am 3.946.58 0.71 0.4086.8010.20- 7 6.50-
2025-12-28 02:15 am 3.646.58 0.55 0.3087.0010.30- 7 6.50-
2025-12-28 02:00 am 3.346.58 0.51 0.3087.2010.30- 7 6.50-
2025-12-28 01:45 am 3.046.76 0.50 0.2087.4010.30- 7 6.50-
2025-12-28 01:30 am 3.046.76 0.47 0.2087.6010.30- 7 6.50-
2025-12-28 01:15 am 2.646.76 0.31 0.2087.8010.30- 7 6.60-
2025-12-28 01:00 am 2.346.76 0.30 0.1087.9010.30- 7 6.60-
2025-12-28 12:45 am 2.346.94 0.30 0.2087.9010.30- 7 6.60-
2025-12-28 12:30 am 2.046.94 0.31 0.2088.1010.30- 7 6.60-
2025-12-28 12:15 am 2.047.12 0.29 0.1088.1010.30- 9 6.60-
2025-12-28 12:00 am 1.647.12 0.30 0.1088.1010.30- 10 6.60-
2025-12-27 11:45 pm 2.047.12 0.30 0.2088.1010.30- 10 6.60-
2025-12-27 11:30 pm 1.647.30 0.30 0.2088.0010.30- 14 6.60-
2025-12-27 11:15 pm 1.647.30 0.31 0.2088.0010.30- 15 6.70-
2025-12-27 11:00 pm 1.647.30 0.31 0.2087.9010.30- 16 6.60-
2025-12-27 10:45 pm 1.647.48 0.32 0.2087.6010.20- 18 6.70-
2025-12-27 10:30 pm 2.047.48 0.32 0.2087.4010.20- 16 6.70-
2025-12-27 10:15 pm 2.047.48 0.32 0.2087.1010.20- 17 6.70-
2025-12-27 10:00 pm 2.347.66 0.34 0.2086.8010.10- 12 6.80-
2025-12-27 09:45 pm 2.347.66 0.37 0.2086.5010.10- 11 6.80-
2025-12-27 09:30 pm 2.647.84 0.50 0.2086.2010.00- 11 6.80-
2025-12-27 09:15 pm 2.648.02 3.26 1.7085.10 9.70- 10 6.70-
2025-12-27 09:00 pm 3.048.5610.42 5.9082.90 9.20- 6 6.80-