FIGURES 



No. Page 



1. The Galveston Bay system and associated watersheds 2 



2. Study areas of the Galveston Bay system showing bay areas, 



habitats, and locations of sampling stations 3 



3. Average water temperature by date and year and the monthly 



mean, standard deviation, and range of temperatures in the 

 Galveston Bay system for all years combined, 1963-66 4 



4. Mean bottom salinity by date and habitat within each bay 



area of the Galveston Bay system, 1963-66 5 



5. Mean values of bottom salinity by date, habitat, and year in 



the Galveston Bay system. 1963-66 6 



6. Maximum, minimum, and mean salinity compared with stream 



flow in the Galveston Bay system, Texas, 1963-66 6 



7. Annual isohalmes and the average isohaline based on 4 years 



of data, 1963-66 7 



8. Mean concentrations of dissolved organic nitrogen by date 



and habitat within each bay area of the Galveston Bay 



system, 1964-66 7 



9. Isopleths (annual average) for dissolved organic nitrogen in 



the Galveston Bay system, 1964-65 8 



10. Mean values of dissolved organic nitrogen by date, habitat, and 



year in the Galveston Bay system, 1964-66 8 



11. Mean concentrations of total phosphorus by date and habitat 



within each bay area of the Galveston Bay system, 1964-66 9 



12. Isopleths (annual average) for total phosphorus in the 



Galveston Bay system, 1964-65 9 



13. Mean values of total phosphorus by date, habitat, and year m 



the Galveston Bay system, 1964-66 10 



14. Mean concentrations of dissolved oxygen by date and habitat 



within each bay area of the Galveston Bay system, 1964-66 11 



15. Mean values of dissolved oxygen by date, habitat, and year 



m the Galveston Bay system, 1964-66 11 



IV 



