75 



Pearl River (Site 10) 



Location (Pearl River Basin) - This site is located in the Pearl River 

 State Wildlife Management Area, 8 km north of Slidell in St. Tammany 

 Parish, Louisiana. Reference USGS map Nicholson, Mississippi-Louisiana, 

 N3022.5-W8937.5/7.5, 1955. 



Hydrology data - Twenty years of hydrology data were analyzed for two 

 gauges. First 10 years data was extrapolated to present gauge on the 

 Southern Railway bridge at Pearl River, Louisiana. No slope correction 

 was necessary because the site is adjacent to the gauge. 



General vegetation - Plant communities range from Taxodium distichum- 

 Nyssa aquatica dominated communities in sloughs to Liquidambar 

 styraciflua-Quercus nigra dominated communities on low ridges. Interme- 

 diate communities are dominated by Quercus laurifolia , Acer drummondii , 

 Fraxinus pennsylvanica , Carpinus caroliniana , and Ilex opaca. 



Soils and climate - Soil series range from Rosebloom (depressional 

 phase) in sloughs to Prentiss on ridges with Arkabutla at intermediate 

 elevations. Average annual rainfall is 152 cm, and the average growing 

 season is 237 days. 



Delineated zones - Zones 2, 3, 4, and 6 were delineated. Zone 5 could 

 not be reliably delineated due to topography. 



