3-49 



highly variable pH, and low dissolved oxygen and transparency were char- 

 acteristic of the confluence. The influence of runoff on salinity and 

 temperature was always evident there. 



Long Wharf Shore 



The Long Wharf Shore area extends from the East Street sewage 

 treatment plant to City Point and was sampled at Stations 4 and 5. This 

 area is influenced by the sewage treatment plant discharges at its north 

 and south boundaries, flow from the Mill-Quinnipiac confluence and West 

 River, and eddy circulation as dociomented by Duxbury (1963) and con- 

 firmed by NAI {1974a) . The area is characteristically shallow (3-6 m, 

 MLW) and is typically less influenced by runoff than the head of the 

 estuary. We observed peak summer temperatures in this area which were 

 sometimes 1-2 C wanner than the rest of the inner or outer harbor. 

 Salinity, dissolved oxygen, and pH were less variable than at the Mill- 

 Quinnipiac confluence but still occurred over a very broad range. Low 

 summer dissolved oxygen concentrations were similar to those found 

 upstream. 



West River Mouth 



Station 6 was located near the mouth of the West River in the 

 shallow (4m, MLW) West River Channel. Only during peak runoff periods 

 did this area differ substantially from the Long Wharf Shore area; at 

 these times, salinities 3-5 ppt lower than adjacent areas were observed 

 in the West River mouth area. 



Inner Harbor Shipping Channel 



Two stations (8, 9) were situated near the shipping channel 

 just off New Haven Harbor Station in 13 and 7 m (MLW) of water, respect- 



