$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
08/04/2020	17.0	62.6	Yes	560	427
07/28/2020	17.0	62.6	Yes	340	308
07/21/2020	17.0	62.6	Yes	410	249
07/14/2020	15.0	59.0	Yes	210	281
07/07/2020	15.0	59.0	Yes	180	276
06/29/2020	14.0	57.2	Yes	590	730
06/23/2020	15.0	59.0	Yes	200	717
06/16/2020	14.0	57.2	Yes	3300	717
06/09/2020	13.0	55.4	Yes	560	220
06/02/2020	13.0	55.4	Yes	200	132
05/26/2020	13.0	55.4	Yes	96	99
05/19/2020	13.0	55.4	Yes	120
05/12/2020	14.0	57.2	Yes	86

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