Summary Table: Geometric Means - 2021-2025
Geometric mean E. coli concentrations (CFU/100 mL), 2021–2025
|
Stream
|
Ambient GM
|
Ambient n
|
Wet Weather GM
|
Wet Weather n
|
|
Massey
|
296
|
19
|
1136
|
17
|
|
McSorley
|
102
|
19
|
515
|
17
|
|
Woodmont
|
67
|
19
|
586
|
17
|
|
Redondo
|
49
|
19
|
394
|
17
|
|
Cold
|
15
|
19
|
129
|
17
|
Geometric mean fecal coliform concentrations (CFU/100 mL), 2021–2025
|
Stream
|
Ambient GM
|
Ambient n
|
Wet Weather GM
|
Wet Weather n
|
|
Massey
|
278
|
19
|
1221
|
18
|
|
McSorley
|
89
|
19
|
530
|
18
|
|
Woodmont
|
50
|
19
|
544
|
18
|
|
Redondo
|
47
|
19
|
410
|
18
|
|
Cold
|
15
|
19
|
162
|
18
|
Overall bacteria concentrations by stream
E. coli Concentrations by Stream & Year
Overall Daily Loads by Stream
Daily loads by Year and Stream
Exceedance summaries (E. coli single-sample threshold)
Climate context (SeaTac)
Antecedent precipitation vs bacteria
