

ORTH CAROLIN 



L S () I' r II C, A 1! O ^ 1 N A 











^^" 



I. p- 





t 











^6 



:■«•- 







,^ 









-^:^^ 



= 20 TO 2 3° C 



2 3 TO 2 6° C 



74* 



Figure 4.--Average spring surface water temperatures (°C). 



6 



