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Extract of Performance of SCARMS during Warragamba Turbidity event – June 2007

Extract of Performance of SCARMS during Warragamba Turbidity event – June 2007. Access to real time monitoring data. Temperature Data: Thermistor chains record temperature profile data Lake Diagnostic System (LDS) monitors temperature profile and weather data. Graph title here.

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Extract of Performance of SCARMS during Warragamba Turbidity event – June 2007

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  1. Extract of Performance of SCARMS during Warragamba Turbidity event – June 2007

  2. Access to real time monitoring data Temperature Data: Thermistor chains record temperature profile data Lake Diagnostic System (LDS) monitors temperature profile and weather data Graph title here LDS Station in Lake Burragorang Thermistor Locations in Lake Burragorang

  3. June 2007 Warragamba Turbidity incident • 14-26 June Rainfall 150mm • Total System storage increased from 37% to 57% • Lake Burragorang rose by 9m (402 GL) • Three major inflow peaks • 65% of the flows came from Wollondilly River • Temperature of inflows 10 degC

  4. June 2007 Warragamba Turbidity incident Forecast on 19 June showing arrival of First inflow peak on 20 June Concentration of suspended solids on a longitudinal section of Lake Burragorang from the dam wall to 45km upstream into the Wollondilly.

  5. June 2007 Warragamba Turbidity incident Turbidity profile on 22 June compared with simulated

  6. June 2007 Warragamba Turbidity incident Arrival of inflows at the dam wall (Second inflow peak arrived on 26 June at the dam wall) Concentration of suspended solids on a longitudinal section of Lake Burragorang from the dam wall to 45km upstream into the Wollondilly.

  7. Comparison of Simulation with measurements Warragamba Turbidity incident declared Measurements show intrusion just reaching screens Screens> Predicted the time of arrival accurately but model under predicted upward spread by 9m

  8. Daily operations • Sediment sample results showed lighter and fine sediments in turbid layers • Model predicted slightly warmer top layer • Parameters adjusted in consultation with CWR • Self Learning features will recalibrate automatic Graph title here Typical comparison after recalibration Model under predicted upward spread on 26 & 27 June

  9. Wind scenarios in first week July 2007 50km for 2 days High wind 20-25km daily

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