the water by a combination of sea state and meteorological 

 conditions. Background fluorescence had returned to 

 pre-storni levels by the time dye injection began on 23 

 Au gu St . 



No correlation is found between tidal phase and background 

 fluorescence as has been observed on similar surveys 

 conducted by OSI . 



4.2 



Current, Temperature, and Salinity Data 



In situ recording current tneters were installed at Stations 

 JCE and JCW (Figure 1) for approximately 10 hours each on 24 

 and 25 August. These data were collected to characterize the 

 tidal currents and associated temperature and salinity at the 

 entrance to Jordan Cove to the east of Millstone Point 

 ( Fi gures 4 and 5 ) . 



As indicated on Figure 4, a well defined NNE-SSW trending 

 ti dally driven current is developed between Fox Island and 

 High Rock. Similarly, Figure 5 shows an ENE-SU tidal current 

 developed between High Rock and Flat Rock. Flood tidal 

 currents to the NNE and ENE have a greater speed than the SSW 

 and SU ebb currents. Water temperatures on the flood tide 

 tend to be lower than the ebb tide, representing the 

 difference between Long Island Sound/Block Island Sound water 

 and water which has been heated in relatively shallow Niantic 

 Bay and Jordan Cove. Salinities remain relatively constant 

 indicating no significant influx of fresh water runoff or 

 excessive evaporation. 



To augment the dye concentration survey, recording current 

 meters were deployed at Station TTIC in Twotree Island 

 Channel off White Point and at Station MP directly off 

 Millstone Point on 26 August. Millstone Point data (Figure 



11 



