GENERAL EXPLANATION 3 
A Flood 
Knots 
3 ol (eae Stee see soe ena a nae day som eeacesaes seer es sae >| 
2 —— 
[ONS 
/ \ 
! 
(@) 
| —= 
2 
3 
Ebb 
FIGURE 2.—Current in New York Harbor Entrance at time of tropic tides. 
4 Flood 
Knots k Te Ue al ea ae ARTE Ie LCE iors cpa is wa ince cama ce atari >| 
y Ebb 
FIGURE 3.—Current in Portsmouth Harbor Entrance, N. H., showing effect of short-period constituents., 
A Flood 
Knots 
2 
kk eS ae eh ele Se SNS Gee Som se I ee es | 
! 1 $t-max. Flood--%5 --- 299. max.flood 
e) 
‘Min. flood 
! 
2 
Ebb 
FIGURE 4.—Current in Seekonk River, R. I., showing effect of short-period constituents. 
