National Water-Quality Assessment (NAWQA) Project

   Home    Headlines    Featured Studies    Liaison Committee    Informing Decision Makers    Data    Modeling/Software    Publications    Maps

Amounts and Sources of Nutrients Delivered to Estuaries in the Gulf of Mexico

Gulf of Mexico > Back to Estuary Selection Page

Click on a watershed to access maps of nutrient contributions to an estuary.

Total Nitrogen

index map Tampa Suwannee Apalachicola Pensacola Brazos Mobile East Mississippi West Mississippi Lake Borgne Barataria Atchafalaya Mermentau Calcasieu Sabine Galveston Matagorda San Antonio Aransas Lower Laguna Madre Upper Laguna Madre Corpus Christi Mississippi/Atchafalaya

Total Phosphorus

index map Tampa Suwannee Apalachicola Pensacola Brazos Mobile East Mississippi West Mississippi Lake Borgne Barataria Atchafalaya Mermentau Calcasieu Sabine Galveston Matagorda San Antonio Aransas Lower Laguna Madre Upper Laguna Madre Corpus Christi Mississippi/Atchafalaya


Additional information describing nutrient loads and delivery maps

Data Tables (UPDATED 10/7/2014)

Data Tables with estimates of total nitrogen and phosphorus delivered to estuaries draining into the Gulf of Mexico with the percent delivered by major source.

Online Decision Support System

explore the regional SPARROW models online to determine nutrient sources, track nutrient transport to downstream reservoirs and estuaries of interest, and evaluate combinations of nutrient reduction scenarios:

Related Links

Accessibility FOIA Privacy Policies and Notices

Take Pride in America home page. FirstGov button U.S. Department of the Interior | U.S. Geological Survey
URL: http://water.usgs.gov/nawqa/sparrow/mrb/gom/index.html
Page Contact Information: gs-w_nawqa_whq@usgs.gov
Page Last Modified: Tuesday, 02-Aug-2016 08:14:09 EDT