Posted conditions are exceptionally reliable for the current day. Posted conditions for future days will be good but may not be quite as reliable as current days. During 2018 and 2019 conditions were posted for 5356 site days from May through September. Of the posted site days there were 574 E. coli measurements. Ninety six percent of the green measured postings were correct. There were 233 measurements on days posted green meaning the E. coli under those conditions were historically less than 235 cfu/100ml. Of the 233 measured green days 224 days had less than 235cfu/100ml. On green days the flow is less than 1 cfsm.
One hundred percent of the red measured postings were correct. There were 35 measurements on days posted red meaning the E. coli under those conditions were historically more than 235 cfu/100ml. Of the 35 days posted red and measured 34 days had more than 235cfu/100ml. On red days the flow exceeds 4 cfsm.
Yellow days with flows from 1 to 2 cfsm 35% (82)exceeded 235 cfsm. One dot
Yellow days with flows from 2 to 3 cfsm 68% (32)exceeded 235 cfsm. Two dots
Yellow days with flows from 3 to 42 cfsm 72% (18)exceeded 235 cfsm. Three dots
