Good So Far
Dissolved oxygen concentrations were all above 5 mg/L with the lowest concentration observed at Station C1 (5.12 mg/L). During the 2008 survey, DO levels were below 5 mg/L at seven stations; in 2007 survey concentrations were still above 5 mg/L during the HYJUN07 survey. The 2006 survey found concentrations below 5 mg/L at two stations. Water temperatures continue to rise; the maximum surface temperature was 18.57ºC (65.4ºF) and the maximum bottom temperature was 18.2ºC (64.8ºF).
My guess is that while water temperatures are rising, they were cooler than usual for June, which helped keep DO's high. The next water quality survey is next week. Historical data are here.