ARMY ENGINEER DISTRICT GTAvailable from the National Technical Information Service As Pb-206 058-F, $3 00 in Paper Copy December 18, 1971 389 P, 22 Fig, 6 Plate, 33 Tab, 2 Append2010-02-152010-02-151971 3http://hdl.handle.net/1969.3/232013-THE PROJECT INVOLVES CONSTRUCTION OF A LOW EARTH DAM IN THE DELTA OF THE TRINITY RIVER NEAR ITS ENTRANCE INTO TRINITY BAY. THE BAY IS PART OF THE GALVESTON, TEXAS BAY ESTUARINE SYSTEM. THE DAM WILL FORM A MULTIPLE PURPOSE RESERVOIR WITH A 45,000 ACRE-FEET STORAGE CAPACITY. THE PROJECT IS DESIGNED TO PROVIDE SALINITY CONTROL, NAVIGATION, WATER SUPPLY, RECREATION, AND FISH AND WILDLIFE ENHANCEMENT. ENVIRONMENTAL IMPACTS OF THE PROJECT INCLUDE PREVENTION OF SALT WATER INTRUSION WHICH NOW EXISTS, PROVISION FOR NAVIGATION PASSAGE UPSTREAM, AUGMENTATION OF THE WATER SUPPLY, AND CREATION OF A SHALLOW FRESHWATER LAKE WHICH CAN BE USED FOR WATER SUPPLY. ADVERSE IMPACTS OF THE PROJECT INCLUDE LOSS OF 7,200 ACRES OF ESTUARINE NURSERY AREA IN UPPER TRINITY BAY, WHICH WILL REDUCE SALT WATER H INCLUDE CESSATION OF CONSTRUCTION; COMPLETION OF THE NAVIGATION CHANNEL, LOCK AND FLOODGATES, AND CONSTRUCTION OF A SALT WATER BARRIER UPSTREAM; AND OTHER VARIATIONS IN SCOPE AND LOCATION OF PROJECT FEATURES. (GRANT-FLORIDA)*DAM CONSTRUCTION*ENVIRONMENT EFFECTS*ENVIRONMENTAL IMPACT STATEMENTS*MULTIPLE-PURPOSE PROJECTS*Texas*WALLISVILLE LAKEAQUATIC HABITATSBAYConstructionEnvironmental impact statementEstuariesESTUARINE FISHERIESfishFISH CONSERVATIONFISH REPRODUCTIONFISHERIESFLOOD CONTROLFRESHWATERGALVESTONLakesNavigationrecreationRIVERSaline water intrusionSALINE WATER-FRESHWATER INTERFACESSALINITYSW 3070 Water quality controlSW 4050 Water law and institutionsSW 4070 Ecological impact of water developmentSW 6010 StructuresTEXTexasTIDAL MARSHESTRINITY RIVERWATERWater supplyJournal