Cleanest/Best States

National Average

Dirtiest/Worst States

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 counties in LOUISIANA or in the U.S. by assessed use impairments.
Rank watersheds in LOUISIANA by assessed use impairments
Rank states by assessed use impairments, impairments due to specific causes, or impairments due to specific sources

LOUISIANA contains a portion of 53 watersheds.

Percentage of Surface Waters with Reported Problems (state + EPA data): 22%

Number of Waterbodies with Reported Problems (as reported by the state): 196

Beneficial Use Most Frequently Impaired	Percent of All Impairments
Aesthetics / Scenic	94%
Shellfish Consumption	92%
Drinking Water Supply	91%
Aquatic Life Support	86%
Wildlife Support	86%
Agriculture	85%
Primary Contact Recreation (Swimming)	47%
SecondaryContact Recreation (Boating)	35%

Beneficial uses not reported for 100% of waterbodies.

Priority for Regulation	Number of Waterbodies
Targeted	0
High	63
Medium	35
Low	97
Not Assessed for TMDL Priority	0
Not Reported to US EPA for TMDL Priority	1

Rivers, Streams, and Creeks
Number of impaired waterbodies: 136
Percent of Rivers, Streams and Creeks in LOUISIANA assessed by agencies for 1997-98 reporting period: 9%

	Percent Waterbodies Affected
Pathogens	56%
Mercury	56%
Low Dissolved Oxygen/Organic Enrichment	55%
Metals	49%
Sediments	21%
More...

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

Rivers, Streams, and Creeks
Number of impaired waterbodies: 136
Percent of Rivers, Streams and Creeks in LOUISIANA assessed by agencies for 1997-98 reporting period: 9%

	Percent Waterbodies Affected
Unknown Sources	71%
Other Sources	56%
Municipal Point Sources	33%
Agriculture	26%
Land Disposal	26%
More...

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