Bayou Lafourche

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Horner, R.R. 1992. Water quality criteria/pollutant loading estimation/treatment effectiveness estimation. In R.W. Beck and Associates. Covington Master Drainage Plan. King County Surface Water Management Division. Seattle, WA. [EPA] Environmental Protection Agency (US) 2000 March. Storm Water Phase II Compliance Assistance Guide. Washington (D.C.). Available online at www.epa.gov; EPA-833-R-00-002. US Census. 2002. Urbanized Area Outline Map (Census 2000), Houma, LA (40375). http://www.census.gov/geo/maps/urban area/uaoutline/ua2000/ua40375. Downloaded 12/18/03. MDEQ 1999a. Fecal Coliform TMDL for Okatoma Creek Pascagoula River Basin Mississippi. Report prepared by Mississippi Department of Environmental Quality. December 15, 1999. MDEQ. 1999b. Fecal Coliform TMDL for Pearl River Pearl River Basin, Leake and Neshoba Counties, Mississippi. Report prepared by Mississippi Department of Environmental Quality, December 15, 1999. SCPDC. 2001. Unknown title. Report with inventory of home sewage systems prepared for LDEQ by the South Central Planning and Development Commission Horsley & Whitten, Inc. 1996 Identification and Evaluation of Nutrient and Bacteriological Loadings to Maquoit Bay, Brunswick, and Feeport, Maine. Final Report. Casco Bay Estuary Project, Portland, ME. 63
Appendix A – Water Quality Data Water quality data for Bayou Lafourche is available from five LDEQ ambient surface water quality monitoring stations. These stations include: Site 0023 Site 0293 Site 1112 Site 0294 Site 0111 Bayou Lafourche 1 mile below Donaldsonville Bayou Lafourche at Thibodaux Canal Boulevard in Thibodaux Bayou Lafourche at US 90 bridge in Raceland Bayou Lafourche at Vacherie Street in Lockport Bayou Lafourche at LA 308 bridge in Larose Data is available for a variety of parameters and dates from the five monitoring stations. In the graphs included in this appendix, the blue or green lines represent the data for a specific parameter, and red lines represent the criteria for that parameter. Dissolved Oxygen Dissolved oxygen criteria for Bayou Lafourche represent the general minimum criteria for fresh water. Naturally occurring variations below the criterion specified may occur for short periods. These variations reflect such natural phenomena as the reduction in photosynthetic activity and oxygen production by plants during hours of darkness. However, no waste discharge or human activity should lower the DO concentrations below the specified minimum. These DO criteria are designated to protect indigenous wildlife and aquatic life species associated with the aquatic environment. For a diversified population of fresh warm water biota including sport fish, the DO concentrations should be at or above 5 mg/L. Bayou Lafourche is listed in the Louisiana Water Quality Inventory Integrated Report as being impaired for fish and wildlife propagation due to recurring violations of dissolved oxygen criteria. The majority of data shows a seasonal variability in dissolved oxygen concentrations with winter months exhibiting dissolved oxygen well above the 5.0 mg/L criteria, and diminished summer concentrations that regularly dip below the criteria. Higher summer temperatures reduce the solubility of oxygen in water, and increased productivity consumes oxygen at higher levels. These characteristics make water quality management measures especially important in summer months when low dissolved oxygen concentrations are more likely. 64
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Bayou Lafourche Watershed Implement
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Appendix A - Water Quality Data ...
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Who is a Stakeholder? In the corpor
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