Survival rates of fishes and macroinvertebrates impinged on the vertically revolving intake screens of a power plant on Galveston Bay, Texas.

Survival rates were determined for organisms impinged during intermittent and continuous operation of the intake screens for Units 1 and 2 (450 megawatts each) and for Units 3 and 4 (565 and 750 megawatts) at the P.H. Robinson Generating Station, Bacliff, Texas. From the 73,033 specimens sampled in 203 collections, there were 66 species of fish, 17 species of decapod crustaceans, and 1 cephalopod (squid) species. The most abundant species were white shrimp, Penaeus setiferus; brown shrimp, Penaeus aztecus; blue crab, Callinectes sapidus; Gulf menhaden, Brevoortia patronus; sand seatrout, Cynoscion arenarius; Atlantic bumper, Chloroscombrus chrysurus; Atlantic cutlassfish, Trichiurus lepturus; Atlantic croaker, Micropogon undulatus; sea catfish, Arius felis; bay anchovy, Anchoa mitchilli; Atlantic spadefish, Chaetodipterus faber; spot, Leiostomus xanthurus; and least puffer, Sphoeroides parvus.