Fish Biological Response Data
This is the fish biological response data.
Fish group 1: 10/14/03 10:54
through 11/01/03 10:52
No fish mortality occurred during monitoring period
Six alarm events and two events of interest occurred during the monitoring.
Click on the graphs below to enlarge.
Event 1 (10/22/03 23:38 through
10/24/03 12:07): Alarm event was caused by decreasing average depth
resultant from increased conductivity. The variable gain amplification
was unable to adequately compensate for the increased conductivity due
in part to fowling of the amplifier conductivity sensor.
Event 3 (11/20/03 12:08 through 11/20/03 12:23): Response event 3 lasted for only 15 minutes was associated with maintenance activities on-site. Water quality (temp, DO, pH, and conductivity) does not appear to be dramatically different than periods prior to the alarm event.
Event 4 (11/25/03 7:59 through 11/25/03 9:29): Alarm event was caused primarily by decreased average ventilatory depth. The alarm event was at the beginning of a rapid conductivity increase from 1.54 to 5.63 mS/cm. A ventilation rate increase was also noted.
Event 5 (12/02/03 1:20 through 12/07/03 15:43): Alarm events were caused by decreased average depth. A concomitant increase in conductivity did not occur during the alarm although clogging/fowling of the variable gain conductivity probe was most likely the cause of the event since average depth recovered during the next monitoring period following maintenance and calibration of the probe.
Event 6 (1/6/04 5:36 through 1/6/04 5:51): Alarm event lasted for 15 minutes. Alarm event was caused by a drop in dissolved oxygen, increase in temperature, and a significant increase in conductivity (4.98mS/cm to 14.18 mS/cm in 2 hours). The water quality changes resulted in a rapid increase in ventilation rate and cough rate, and a decrease in average depth.
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