69 



Yazoo River (Site 6) 



Location (Yazoo River Basin) - This site is located on the north side of 

 the Yazoo River, 8 km west of the U.S. Highway 61 bridge and 12.0 miles 

 north of Vicksburg, Mississippi in Issaquena County. Reference USGS 

 map, Long Lake, Mississippi-Louisiana, N3222 . 5-W9052 . 5/7 . 5 , 1962. 



Hydrology data - Twenty years of hydrologic zone elevations were com- 

 puted by analyzing flow data from gauges on the Mississippi River at 

 Vicksburg, Mississippi, on the Yazoo River 2.4 km east of the site, and 

 at the Steele Bayou control structure immediately adjacent to the study 

 site. 



General vegetation - Plant communities range from Quercus lyrata-Carya 

 aquatica at lowest elevations to a Liquidambar styraciflua-Ulmus ameri- 

 cana-Celtis laevigata association at the highest elevations. Other 

 commonly occurring species include Ilex decidua, Carya illinoensis , and 

 CercLs canadensis . 



Soils and climate - Soils were determined to be in the Sharkey series. 

 Average annual rainfall is 127 cm. The average growing season is 

 221 days. 



Delineated zones for study - Only Zones 3 and 4 were delineated for this 

 study. Zones 2, 5, and 6 were either too narrow or too disturbed to 

 provide reliable data. 



