Data is recorded roughly 300 times during a weekly period (every 30 minutes). When disolved oxygen (DO) falls below 4.00 mobile fauna begins to migrate towards higher DO areas and fish begin to avoid the waters.

During the week of 7/7 - 7/13/24 the average DO was 5.07. However, DO recorded 141 individual times below 4.0.

During the week of 9/8-9/14 average DO was 3.38. DO recorded 188 individual times below 4.0.

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South Midway