0.80 



0.70 



0.60 



0.50 



0.40 



0.30 



0.20 



0.10 







-0.10 



-0.20 



-0.30 



-0.40 



-0.50 



-0.60 



-0.70 



-0.80 



-0.90 



- 1.00 



- I. 10 



- 1.20 



- 1.30 



1 1 1 r 





Symbo 



Son Luis Pass 

 Freeporf (NOS) 

 Freeporf Entrance Channel 

 Chocolate Bayou 

 Golvesfon South Jetty 

 Sabine Pass (NOS) 

 Golveston Pleasure Pier 

 I I I I L 



X 



Jon. Feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec. 



Figure 4. Upper Texas coast monthly mean tide level variability, 1974. 



16 



