TABLES (Continued) 

 Number Page 



3.40 Volume of industrial and municipal water intake (millions of cubic meters) by source 



in southwestern Louisiana 58 



3.41 Daily (cubic meters) and annual (millions of cubic meters) industrial and municipal 



water use by basin 58 



3.42 Annual volume of water use (millions of cubic meters) in the Sabine (Texas) Basin 58 



3.43 Summary of waterbome commerce (short tons) in the Chenier Plain for 1976 59 



3.44 Comparison of area covered by dredged material in each basin in 1952 and 1974 60 



3.45 Length (km) of canals associated with transportation embankments in the basins 60 



3.46 Mean coastal tidal fluctuations for Chenier Plain basins 66 



3.47 Mean annual rise in water level by basin 66 



3.48 Total freshwater input and estimated renewal time by basin for the Chenier Plain 69 



3.49 Minimum fetch and duration required for full development of set-up associated with 



various wind speeds 70 



3.50 Duration of water above local MWH, frequency of inundation, and mean inundation duration 



in 1971 in the Calcasieu Basin and in Barataria Bay 70 



3.5 1 Flow model of primary and secondary effects of cultural modifications of the hydrologic 



regime on the Chenier Plain ecosystem 72 



3.52 Lengths (km) of various canal types in Chenier Plain basins 73 



3.53 Defmitionsof the habitats of the Chenier Plain 76 



3.54 The area of Chenier Plain habitats in 1974 77 



3.55 Net habitat change in the Chenier Plain from 1952 to 1974 78 



3.56 Loss of natural marsh in the Chenier Plain in 1952 to 1974 79 



3.57 Percentage of onshore area occupied by canals in each basin in the Chenier Plain, excluding 



spoil bank area 80 



3.58 Percentage of land loss in the Chenier Plain 80 



3.59 Calculated net photosynthesis (primary production) by basin 82 



3.60 Estimated annual sportfish catch and the effort this catch will support by basin, in the Chenier 



Plain 88 



3 .6 1 The area (ha) of various habitat types required to support one man-day of hunting for various 



wildlife species 88 



3.62 Average peak populations and harvest of waterfowl species in the Chenier Plain 89 



3.63 Annual water balance for Chenier Plain basins 91 



3.64 Permissible, and excessive loading rates for phosphorus as an index of eutrophication 92 



3.65 Summary of discharge, loading rate, and eutrophic state of surface waters of Chenier Plain 



Basin 93 



3.66 Comparison of constituents of brine water from some southwestern Louisiana oil fields 



witii constituents found in sea water -94 



3.67 Water quahty of Chenier Plain basins 95 



3.68 Summary of natural and cultural features of VermiUon Basin 97 



3.69 Summary of natural and cultural features of Memientau Basin 109 



3.70 Summary of natural and cultural features of Chenier Basin 114 



3.71 Summary of natural and cultural features of Calcasieu Basin 122 



3.72 Summary of natural and cultural features of Sabine Basin 131 



3.73 Commercial fish landings (kg) for Sabine Lake for 1970-1975 140 



3.74 Texas landings of blue crab for Sabine Lake, and Galveston and Trinity bays, showing 



amount and value of landing, 1962 to 1975 142 



3.75 Summary of natural and cultural features of East Bay Basin 143 



4.1 Estimates of organic export from wetlands 160 



4.2 Summary of annual net shoot production by six marsh plants 160 



4.3 Above ground yield of smooth cordgrass in September 1973 in a streamside location in 



Barataria Bay, Louisiana as affected by appUcations of nitrogen and phosphorus 161 



4.4 Fish biomass in small marsh ponds compared to open estuarine waters of the Caminada 



Bay system, Louisiana 1 70 



4.5 Numbers of vertebrate consumer species reported to use the different wetland habitats 172 



4.6 Plant species present and their percent coverage in the salt marsh habitat in the Louisiana 



portion of the Chenier Plain by basin 1 74 



4.7 Estimated net primary production per square meter for the salt marsh habitat. Total 



net primary production is calculated as S" (percent coverage times net primary 



production) for n species 1 74 



4.8 Plant species present and their percent coverage for the intermediate marsh habitat in the 



Louisiana portion of the Chenier Plain by basin 1 78 



4.9 Plant species present and tiieir percent coverage for the brackish marsh habitat in the 



Louisiana portion of tlie Chenier Plain by basin 179 



xiv 



