$name - King County

Juanita Beach 0806SB

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

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Sample Date	Temperature (°C)	Temperature (°F)	Included in Bacteria Geomean Calculation?	Daily Average Bacteria	Bacteria Geometric Mean – using the three most recent samples
09/23/2019	17.0	62.6	No	not sampled
09/16/2019	20.0	68.0	Yes	70	131
09/09/2019	20.0	68.0	Yes	680	154
09/03/2019	24.0	75.2	Yes	48	70
08/26/2019	25.0	77.0	Yes	112	88
08/19/2019	25.0	77.0	Yes	65	61
08/12/2019	26.0	78.8	Yes	95	80
08/05/2019	27.0	80.6	Yes	37	100
07/29/2019	25.0	77.0	Yes	146	130
07/22/2019	24.0	75.2	Yes	186	93
07/18/2019			Yes	81	133
07/15/2019	24.0	75.2	Yes	54	253
07/11/2019	19.0	66.2	Yes	546	350
07/08/2019	24.0	75.2	Yes	553	205
07/01/2019	24.0	75.2	Yes	143	193
06/24/2019	22.0	71.6	Yes	110	189
06/17/2019	24.0	75.2	Yes	459	87
06/12/2019	22.0	71.6	Yes	134	74
06/10/2019	21.0	69.8	Yes	11	176
06/06/2019	17.0	62.6	Yes	283	403
06/03/2019	22.0	71.6	Yes	1781	283
05/28/2019	18.0	64.4	Yes	130	63
05/20/2019	17.0	62.6	Yes	98
05/13/2019	18.0	64.4	Yes	20

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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PLEASE NOTE: Samples collected prior to July 31, 2018 are not included in the current geomean calculation in order to better reflect conditions following the closure on July 31st, and the subsequent reopening on August 10th.