TABLES 

 Number Page 



2.1 Average number of freeze days annually at various places in Louisiana 19 



2.2 Mean values of parameters of synoptic weather types at Lake Charles during each 



January from 1971 to 1974; number of observations in parenthesis 20 



2.3 Synoptic weather types and percent of hours recorded at Lake Charles, 1971 through 



1974 20 



3.1 Socioeconomic components and ecologically sensitive activities generated by them. 



The matrix identifies major activities associated with each sector of the economy 28 



3.2 Human population distribution in the Chenier Plain basins and adjacent northern 



parishes (counties) 29 



3.3 Annual value of major resources of the Chenier Plain 29 



3.4 The 1974 production of oil and gas in the Chenier Plain 30 



3.5 Louisiana brine disposal by basin, in mbbl 30 



3.6 Expected oil spillage due to non-catastrophic incidents (vessel not sunk) involving sea- 



going vessels in superport region 32 



3.7 Pipeline spillage incidents and volume for the United States and its territories during 



1971 and 1972 32 



3.8 Lengths and areas of oil production related canals for each basin and the total for the 



Chenier Plain 33 



3.9 Estimated fami area and value of all agricultural products and of crops by basin in 1974 33 



3.10 Areal changes in agriculture habitats from 1952 through 1974 35 



3.1 1 Hectares of natural habitat converted to agriculture, and agricultural habitat converted to 



urban use in the Chenier Plain from 1952 to 1974 35 



3.12 Length and density of agricultural drainage and access canals in the Chenier Plain basins 36 



3.13 Area of agricultural lands, fertUized lands, and tons of fertilizer used for each Chenier Plain 



basin 37 



3.14 Source and volume (millions of cubic meters) of water for irrigation in southwest Louisiana 38 



3.15 Harvest and value of fur animals in Louisiana in 1973 40 



3.16 Estimated Chenier Plain harvest of muskrat and nutria, based on habitat area and yield 



per unit area 40 



3.17 Estimated value of the muskrat and nutria fur industry for each basin 41 



3.18 Value of alligators harvested from the Louisiana portion of the Chenier Plain for 1972 



through 1976 41 



3.19 Weight and value of commercial landings of fish in western Louisiana and the Galveston 



area in 1975 42 



3.20 Estimated commercial catch per hectare of inshore area in 1963 - 1973 for estuarine- 



dependent fishes and shellfishes 43 



3.21 Estimated contribution of each Chenier Plain basin to the commercial harvest of fishes 



and shellfishes (kg x 1000) 44 



3.22 Estimated landed value ($ x 1,000) of estuarine-related fishes and shellfishes, by basin 44 



3.23 Commercial production (kg) per unit of area (ha) of freshwater fishes for each basin 45 



3.24 Estimated total commercial production of freshwater fishes by basin (number of 



hectares of freshwater area in parentheses) 45 



3.25 Estimated value ($) of the freshwater fishery in the Chenier Plain, by basin 45 



3.26 Estimated value ($ x 1000) of commercial fishes, shellfishes, and the fur industry 



in the Chenier Plain 46 



3.27 Length (km) and area (km^) of navigation canals in the Chenier Plain 47 



3.28 Estimated percent of population that engages in sportfishing and hunting according to 



various studies in the United States and Louisiana 48 



3.29 Total fishing and hunting license sales for Calcasieu, Cameron, and Vermilion parishes 



1967 through 1975 48 



3.30 Man-days of hunting and recreation per year for coastal Louisiana 49 



3.3 1 Estimated recreational and hunting use and value of wildlife in the Chenier Plain 50 



3.32 Estimated sportfishing demand in the Louisiana coastal zone 51 



333 Demand for and value of sportfishing in the Chenier Plain 51 



3.34 Refuges, parks, and management areas in the Chenier Plain 52 



3.35 Population of parishes (counties) overlapping the Chenier Plain region 53 



336 Area and changes in urban-industrialized land in the Chenier Plain 53 



337 Habitat type and amount converted to urban and industrial use between 1952 



and 1974 in Calcasieu Basin 55 



3.38 Typical daily per capita inputs and outputs of a U.S. city with one million residents 55 



3.39 Industrial and urban phosphorus discharges (kg/yr) in the Chenier Plain basins 55 



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