Cleanest/Best Watersheds

National Average

Dirtiest/Worst Watersheds

0%					50%					100%

Percentage of Surface Waters with Impaired or Threatened Uses (state + EPA data):

Number of Impaired Waterbodies (as reported by the state):

NOTE: Data limitations affect the accuracy of these rankings.

Rank watersheds by assessed use impairments
Rank counties by assessed use impairments.
Rank states by assessed use impairments, impairments due to specific causes, or impairments due to specific sources

Lower Mississippi-Natchez contains a portion of 7 counties:

ADAMS County, MS

CLAIBORNE County, MS

CONCORDIA Parish, LA

MADISON Parish, LA

TENSAS Parish, LA

WARREN County, MS

WILKINSON County, MS

Percentage of Surface Waters with Reported Problems (state + EPA data): 100%

Number of Waterbodies with Reported Problems (as reported by the state): 4

Central Lower Mississippi River

Mississippi River

Mississippi River Below Vicksburg- Da

South Central Lower Mississippi River

Beneficial Use Most Frequently Impaired	Percent of All Impairments
Aquatic Life Support	75%
Shellfish Consumption	25%
Aesthetics / Scenic	25%
SecondaryContact Recreation (Boating)	25%
Primary Contact Recreation (Swimming)	25%
Agriculture	25%

Priority for Regulation	Number of Waterbodies
Targeted	0
High	0
Medium	0
Low	1
Not Assessed for TMDL Priority	3
Not Reported to US EPA for TMDL Priority	0

Rivers, Streams, and Creeks
Number of impaired waterbodies: 4
Percent of Rivers, Streams and Creeks in MISSISSIPPI assessed by agencies for 1997-98 reporting period: 47%
Percent of Rivers, Streams and Creeks in LOUISIANA assessed by agencies for 1997-98 reporting period: 9%

	Percent Waterbodies Affected
Pesticides	100%
Sediments	100%
Nutrients	75%
Low Dissolved Oxygen/Organic Enrichment	50%
Flow Alterations	25%
More...

NOTE: Possible inconsistencies between data on (a) impaired waterbodies and (b) percentage of waterbodies assessed.

Rivers, Streams, and Creeks
Number of impaired waterbodies: 4(cause not reported for 75%)
Percent of Rivers, Streams and Creeks in MISSISSIPPI assessed by agencies for 1997-98 reporting period: 47%
Percent of Rivers, Streams and Creeks in LOUISIANA assessed by agencies for 1997-98 reporting period: 9%

	Percent Waterbodies Affected
Impairment source not reported	75%
Agriculture	25%
Industrial Point Sources	25%
Land Disposal	25%
Municipal Point Sources	25%
More...

NOTE: Possible inconsistencies between data on (a) impaired waterbodies and (b) percentage of waterbodies assessed.

U.S. EPA Watershed Health Index

U.S. EPA Condition and Vulnerability Indicators

U.S. EPA Watershed Profile

U.S. Geological Survey: Water Resources Links