Water resources of St. Tammany Parish, Louisiana

Fact Sheet 2009-3064
Prepared in cooperation with the Louisiana Department of Transportation and Development



St. Tammany Parish, located in southeastern Louisiana, contains fresh groundwater and surface-water resources. In 2005, about 22.8 million gallons per day (Mgal/d) were withdrawn from water sources in St. Tammany Parish. Almost 100 percent (22.7 Mgal/d) was withdrawn from groundwater, and less than 1 percent (0.06 Mgal/d) was withdrawn from surface water. Withdrawals for public supplies accounted for 70 percent (16 Mgal/d) of the total water withdrawn. Withdrawals for domestic use were 28 percent (6 Mgal/d). Generally, water withdrawals in the parish increased from 1960 to 1970, decreased from 1970 to 1985, and again increased from 1985 to 2005.

This fact sheet summarizes basic information on the water resources of St. Tammany Parish, La. Information on groundwater and surface-water availability, quality, development, use, and trends is based on previously published reports listed in the references section.

Study Area

Publication type Report
Publication Subtype USGS Numbered Series
Title Water resources of St. Tammany Parish, Louisiana
Series title Fact Sheet
Series number 2009-3064
DOI 10.3133/fs20093064
Edition Version 1.0: December 2009; Version 1.1: February 2012; Version 1.2: June 2015; Version 1.3: January 2017
Year Published 2009
Language English
Publisher U.S. Geological Survey
Publisher location Reston, VA
Contributing office(s) Louisiana Water Science Center
Description 6 p.
Country United States
State Louisiana
County St. Tammany Parish
Online Only (Y/N) N
Additional Online Files (Y/N) N
Google Analytic Metrics Metrics page
Additional publication details