Accession Number:

ADA247933

Title:

Delineation of Wetlands of the Yazoo River Basin in Northwestern Mississippi

Descriptive Note:

Final rept.

Corporate Author:

ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS ENVIRONMENTAL LAB

Personal Author(s):

• Kirchner, William N.
• Kleiss, Barbara A.
• Clairain, Jr., Ellis J.
• Parker, W. B.
• Newling, Charles J.

Report Date:

1992-02-01

Pagination or Media Count:

70.0

Abstract:

This study was designed to delineate approximate wetland boundaries and estimate acreage and location of wetlands in the 4.2-million acre Yazoo River Basin in northwestern Mississippi. It is part of the US Army Engineer District, Vicksburg, reevaluation of engineering, economic, and environmental aspects of the unconstructed features of the Upper Yazoo River and Steele Bayou Projects. The Federal Manual for Identifying and Delineating Jurisdictional Wetlands was used as a technical basis for the delineation. The Manual uses a three-parameter approach, considering vegetation, hydrology, and soils, in order to identify a wetland. It was recognized early in the study that the soils provided the best diagnostic parameter in the Yazoo Basin, and much of the subsequent effort was centered on refining the use of this parameter in the study area. Based on field observations at 275 sites and extrapolation from soil survey maps, approximately 69 percent of the study area was determined to be wetlands for planning purposes. Wetland acreages in the 20 counties in the study area range from 80.9 percent of the total county area in Humphreys County to only 3.7 percent of the total county area in Tate County.

Descriptors:

• *WETLANDS
• UNITED STATES GOVERNMENT
• PARAMETERS
• HYDROLOGY
• BOUNDARIES
• SOILS
• REFINING
• SOIL SURVEYS
• MISSISSIPPI
• BASINS(GEOGRAPHIC)
• VEGETATION
• DIAGNOSIS(GENERAL)
• MAPS
• MANUAL OPERATION
• RIVERS

Subject Categories:

• Geology, Geochemistry and Mineralogy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE