Biological Survey — Oswego Watershed 23 



Table 5. — Analyses of Springs and Spring Runs 



The gaseous content of the Avater of two ponds was studied with 

 reference to its suitability for trout, — one known as Lowery pond, 

 a deep marl pond of about 30 acres situated 5.5 miles north of 

 Geneva (Map 4A) and the other, Green lake, a very deep pond of 

 some 62 acres situated in Onondaga county (Map 3B) about 2.5 

 miles northeast of Fayetteville. In the former although the 

 temperature conditions were suitable at depths ranging from about 

 16 feet to the bottom (52 feet), the oxygen was found to be zero 

 from about 30 feet down, the asphyxial point being reached at 

 some place between the 16 and 24 foot depths (Table 6). For this 

 and other reasons pertaining to the bottom topography, absence of 

 inlet, etc., the pond was considered unsuitable for any species of 

 trout. 



Table 



-Temperature and Gaseous Relations in Lowery Pond, 

 July 18, 1927 



DEPTH IN FEET 



Temp. C° 



2 p. p. m. 



*C0 2 p. 



p. m. 



pH 



Methyl orange 

 alkalinity 

 as p. p. m. 

 calc. carb. 



Surface 



8 



25.3 



21.5 



13.5 



9.8 



9.5 



9.5 



8.3 

 11.8 

 3.2 

 0.54 

 0. 

 0. 





0. 



0. 



8. 

 20. 

 60. 

 60. 



8.3 

 8.4 

 7.5 

 7.1 

 7.1 

 7.1 



128 

 136 



16 



140 



24 



151 



30 



315 



52 



442 







* Hydrogen sulphide being present, these figures represent phenolphthalein acidity calculated as 

 p. p. m. carbon dioxide. 



