$name - King County

Juanita Creek 0446

For algal toxin data please visit the State Toxic Algae web page and follow the “Find Lake” menu.

Please select a site and a year

Sample Date	Temperature (°C)	Temperature (°F)	Included in Bacteria Geomean Calculation?	Daily Average Bacteria	Bacteria Geometric Mean – using the three most recent samples
08/19/2019	17.0	62.6	Yes	500	513
08/12/2019	20.0	68.0	Yes	630	492
08/05/2019	18.0	64.4	Yes	430	351
07/29/2019	17.0	62.6	Yes	440	399
07/22/2019	17.0	62.6	Yes	230	335
07/18/2019			Yes	630	325
07/15/2019	16.0	60.8	Yes	260	294
07/11/2019	16.0	60.8	Yes	210	328
07/08/2019	16.0	60.8	Yes	470	455
07/01/2019	16.0	60.8	Yes	360	417
06/24/2019	15.0	59.0	Yes	560	405
06/17/2019	17.0	62.6	Yes	360	419
06/10/2019	16.0	60.8	Yes	330	361
06/06/2019			Yes	620	430
06/03/2019	15.0	59.0	Yes	230	338
05/28/2019	14.0	57.2	Yes	560	392
05/20/2019	14.0	57.2	Yes	300
05/13/2019	13.0	55.4	Yes	360

Table Legend

Cell Color	Bacteria Value	Concern Level
	Individual day <= 200 CFU/100 ml	Low Concern - safe for swimming
	Individual day > 200 & <= 1000 CFU/100 ml	Moderate Concern – still safe for swimming
	Individual day > 1000 CFU/100 ml or geometric mean > 200 CFU/100 ml	High Concern – probable closure. For more information see Beach Closure Protocol

NOTE: Beach closure and reopening decisions are made by Public Health – Seattle & King County. Decisions are based on these results plus additional information about beach conditions, and may not always match the concern levels shown here.

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We suggest you avoid contact with this creek due to high bacteria levels