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Report Site Map > Graphics of Streamflow and Nutrient Flux > Graphics of Streamflow and Nutrient Flux Delivered from the Mississippi-Atchafalaya River Basin to the Gulf of Mexico > Graphics of Streamflow and Nutrient Flux for the Mississippi-Atchafalaya River Basin to the Gulf of Mexico

USGS Open-File Report 2007-1080 - Streamflow and Nutrient Fluxes of the Mississippi-Atchafalaya River Basin and Subbasins for the Period of Record Through 2005

Graphics of Streamflow and Nutrient Flux for the Mississippi-Atchafalaya River Basin to the Gulf of Mexico

The following graphs depict annual flux of dissolved nitrite plus nitrate (figure 1), total nitrogen (figure 2), total phosphorus (figure 3), dissolved orthophosphate (figure 4), and dissolved silica (figure 5), along with concurrent annual streamflow delivered to the Gulf of Mexico by the Mississippi-Atchafalaya River Basin. Graphs of nutrient flux and streamflow for the Mississippi River near St. Francisville, Louisiana, and the Lower Atchafalaya River at Melville, Louisiana, are also available on separate pages.

Figure 1. Annual dissolved nitrite plus nitrate flux and streamflow for total Mississippi-Atchafalaya River Basin.	Figure 2. Annual total nitrogen flux and streamflow for total Mississippi-Atchafalaya River Basin.
Figure 3. Annual total phosphorus flux and streamflow for total Mississippi-Atchafalaya River Basin.	Figure 4. Annual dissolved orthophosphate flux and streamflow for total Mississippi-Atchafalaya River Basin.
Figure 5. Annual dissolved silica flux and streamflow for total Mississippi-Atchafalaya River Basin.

The data used to generate the above graphs are available on the following page.

• Annual MARB Nutrient Flux to the Gulf of Mexico for the Period of Record (through 2005)

The U.S. Geological Survey defines a water year as October 1^st of the previous year to September 30^th of the designated year; for example, water year 2005 is from October 1^st, 2004 to September 30^th, 2005.

Report Site Map > Graphics of Streamflow and Nutrient Flux > Graphics of Streamflow and Nutrient Flux Delivered from the Mississippi-Atchafalaya River Basin to the Gulf of Mexico > Graphics of Streamflow and Nutrient Flux for the Mississippi-Atchafalaya River Basin to the Gulf of Mexico