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List of Impaired Waters (Louisiana)

Lake Pontchartrain, Lake Maurepas 8070204
Cycle 2006

ID
Num
WBID Waterbody Name State Basin Name # of
Impairments
1 LA-040401 Blind River - Amite River Diversion Canal to Lake Maurepas Lake Pontchartrain 6
2 LA-040402 Amite River Diversion Canal Lake Pontchartrain 4
3 LA-040403 Blind River - Source to Amite River Diversion Canal Lake Pontchartrain 6
4 LA-040404 New River - Headwaters to New River Canal Lake Pontchartrain 2
5 LA-040602 Lake Maurepas Lake Pontchartrain 1
6 LA-040603 Selsers Creek - Origin to South Slough Lake Pontchartrain 5
Total # of Impairments 24

Delistings for Lake Pontchartrain

Delistings for Lake Maurepas 8070204

ID
Num
WBID Waterbody Name Status Delisted Basis for Delisting
1 LA-040401 Blind River - Amite River Diversion Canal to Lake Maurepas Impaired Water Segment    
2 LA-040402 Amite River Diversion Canal Impaired Water Segment    
3 LA-040403 Blind River - Source to Amite River Diversion Canal Impaired Water Segment    
4 LA-040404 New River - Headwaters to New River Canal Impaired Water Segment    
5 LA-040602 Lake Maurepas Impaired Water Segment    
6 LA-040603 Selsers Creek - Origin to South Slough Impaired Water Segment    
7 LA-041001 Lake Pontchartrain - West of LA Hwy 11 Bridge Restored Copper, Total & Fecal Coliforms Copper - New data shows attainment; Total fecal coliforms - Ambient monitoring by LDEQ shows full support of criteria and has done so for several years. South shore beaches remain under a LDHH swimming advisory. This region of the lake was separated out as its own assessment unit within ADB and assessed as impaired with the same suspected source and cause as the former full lake listing.

In Summary:

Impaired Water Segments 6
TMDL Completed 0
Restored 1

 

Gulf of Mexico Program Office
Mail Code: EPA/GMPO
Stennis Space Center, MS 39529-6000
228-688-3726
FAX: 228-688-2709


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