Hypoxia in the Gulf of Mexico
Streamflow and nutrient flux for all Mississippi-Atchafalaya River Basin (MARB) stations are provided herein as single worksheets for annual and monthly time intervals for the period of record through water year 2011. Streamflow and nutrient flux through 2005 are compiled from Aulenbach and others (2007). 2011 streamflow and nutrient flux, which includes the period October 2005 through September 2011, extends the information provided by Aulenbach and others (2007) using the same approach and methodologies. The information provided on this page uses final data for the water year 2011.
Note that flux estimates on a monthly time-step can be quite inaccurate and should be used with caution. They are provided with the intent to allow the user to sum up nutrient fluxes on either a seasonal basis or an annual basis other than water year.
Monitoring Network, Methods, and Data Sources
Specific information on the data and methodology used is provided by the following report sections from Aulenbach and others (2007).
Aulenbach, B.T., Buxton, H.T., Battaglin, W.T., and Coupe R.H., 2007, Streamflow and nutrient fluxes of the Mississippi-Atchafalaya River Basin and sub-basins for the period of record through 2005: U.S. Geological Survey Open-File Report 2007-1080
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