Friday, 17 October 2014

Autumn rains arrive


Today we worked in the rain, measuring the discharge at a moderately high stage of 56 cm. A maximum velocity of 0.91 m/s was recorded, and the total discharge came to 2.71 m3/s. We can see in the stage hydrograph below that a series of rainfall events has raised the baseflow water level as the catchment soil moisture and groundwater levels increase through the autumn season. Rainfall is becoming more frequent, and evapotranspiration is decreasing with falling temperatures.


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