3-55 



the harbor, although weather in November- January was warm. Below aver- 

 age air and water temperatures occurred in April 1975. December 1975 

 was uncommonly warm in New Haven Harbor, as were air temperatures in 

 November-December 1975. December through February 1976 was unusually 

 cold, accompanied by widespread freezing of the harbor, corresponding 

 with low air temperatures during this period. 



Only in August 1971 was an unusually warm summer month 

 reflected in water temperature measurements. In 1972, sximmer was 

 exceptionally cool. Warm winters occurred in 1972-1973, and 1975-1976, 

 while 1974-1975 and 1976-1977 were unusually cold. Cold falls were 

 characteristic of 1972 and 1974. Only in 1971 did spring temperatures 

 depart from normal, when May was unusually cool. 



Dissolved oxygen concentration patterns varied little with 

 four exceptions . The levels failed to reach typical annual peaks in 

 winter 1972-1973 and in fall and winter 1973-1974. Also, the typical 

 fall increase was delayed in fall 1976. In 1977, a midsummer peak 

 occurred in August, between July and September minima; in other years, 

 August dissolved oxygen concentrations were low and similar to other 

 midsummer minima. No correspondence was detected between these altered 

 annual patterns of dissolved oxygen concentration and climatological 

 effects. 



No seasonal, climatological or other pattern of significance 

 was evident in pH data. 



Summarij: Char act erization of New Haven Harbor Eydpogvaphy 



Physical/chemical characteristics of New Haven Harbor studied 

 were generally similar 1971 through 1977 (NAI, 1971; 1973; 1974a; 1974b; 

 1975a; 1976a; 1977a, 1978a). Salinity, temperature, and, to a lesser 

 degree, dissolved oxygen reflected the various years' climatology. 

 Winter 1977 was colder than winters of 1972 through 1976 (NOAA, 1978), 



