Reclamation (Bureau of Reclamation) has constructed four temperature control curtains to reduce release water temperature at structures in the Sacramento and Trinity River drainages in northern California. These curtains provide selective withdrawal at intake structures, control topography induced mixing, and control itnerfacial shear mixing associated with plunging density currents entering reservoirs. comprehensive field monitoring has been conducted to measure curtain perforamcne characteristics. Monitoring included continuous temperature profiling, and velocity profiling using an ADCP (acoustic Doppler current profiler). This paper presents and summarizes performance data collected near curtains in Lewiston and Whiskeytown Reservoirs.
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