40 
Years 
1948 
1949-1953 
1954 
Mean 
Maximum 
Mean Max, 
Mean Min. 
Minimum 
1958 
1958 
1944-1948 
1949-1953 
1954 
1955 
1956 
1957 
1958 
Mean 
Maximum 
Mean Max. 
Mean Min. 
Minimum 
1956 
1957 
1958 
Mean 
Maximum 
Mean Max, 
Mean Min, 
Minimum 
1958 
January 
67.9 
February 
(e3 3168 
March 
32.9 
April 
Temp. 
°F 
78.8 
Sal. 
So 
2505 
28.2 
29.05 
28.0 
Bio ( 
30.8 
26.1 
20.3 
QRr~a 
O.o 
e e 
aor 
ees Wee 
NO 
Ww Ronwowuwn 
S 
81.5 
*Observations for the year are incomplete; extremes are for the months shown. 
Table 1.- Surface Water 
June 
Temp. 
°F 
86.4 
86.4 
85.0 
86.2 
Ch 
89.2 
82.8 
82 
Sal. 
to 
Sila 
29.3 
333 
30.3 
36.6 
33.5 
2723 
19.7 
Temp. 
°F 
87.4 
9h 
90.1 
84.29 
8h 
Means and 
July 
Sal. 
%o 
ROCKPORT, 
88.4 
87.3 
87.1 
34.9 
33-7 
370) 
3he 5 
40.6 
3702 
30.6 
19.1 
PORT ARANSAS, 
Sh.2' 3305) SO.Onmsoe9, 
BRAZOS SANTIAGO, 
81.5 35.8 62.2) 3603 
83.9 
Bhe5 
85.5 
84.3 
8565 
84.1 
85.6 
84.5 
90 
87.5 
81.5 
ug 
PORT ISABEL, 
3406 
35.0 
3765 
3725 
3705 
34.1 
3505 
3503 
38.8 
3705 
31.5 
20.0 
85.7 
85.4 
84.5 
85.5 
84.1 
86.0 
85.9 
B54 
90 
87.8 
83.0 
81 
3705 
3722 
3703 
3604 
3703 
3603 
3528 
Si/oal 
3907 
38.4 
3501 
32.0 
TAMPICO, 
