Area	Guerneville
Topic	WQ: Estuary 1998 Hydrolab Temp, Salinity and DO Station #3 Sept-Nov

 

Caption:  An automated Hydrolab data probe was placed near the mouth of Willow Creek from September 22 to November 10, 1998 and temperature, salinity and dissolved oxygen measurements are shown above. MSC (1999) noted that: "There was a diel DO sag in the creek of 2-3 ppm. Lowest DO values often coincided with draining after breaching events: minima were 2.5 and 2.2 ppm following the third and fourth breaching events (breached at 7.8 and 6.5 feet, respectively). The overall lowest DO recorded was 1.5 ppm at 0800 hr on 29 October, just after the brief bar-open period following the breaching of 27 October (breached at 7.4 ft)." Breaching events in this period were September 20, October 12 and November 4. See the Picture tab for monitoring locations. Click on InfoLinks for more information.

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