Time: circa 4:30 pm
Weather Conditions: Rain in the morning with periods of heavy rain.Overcast afternoon with fog creeping in in the early hours of the evening. Most of the day fluctuated between mid 40's and low 50's.
Water Quality Observations:
-High Turbidity (most likely due to increase in flow rate and precipitation in the morning)
-Temperature and pH in stream had a fast decrease during heavy rain period
-DO increase synchronized with temperature decrease during heavy rain period
-Specific Conductivity also decreased during rain period
Water Quantity Observations:
-Peak Flow rate of 110 cfs
-Stage reading: 26 cm Actual reading: 47cm
-Weir overwhelmed by amount of water and did not aid in controlling water flow as the depth of the stream was higher than the weir itself during the higher flow rates. During the end of the day, a hydraulic jump was observed at the exit of the weir's crest (see photo below)
-An increase of flow from the storm drain
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| Storm Drain and Culvert after storm event on Feb. 3, 2016. The stream's turbidity has been increasing when comparing to Feb. 1 and Feb. 2 conditions. |
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| At center of weir's crest a hydraulic jump can be observed. |
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| Live LEWAS data. Stream flow rate and turbidity peaks can be observed approximately at 10 am with a corresponding decreasing in stream's temperature. |
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