Skip to main content
U.S. flag

An official website of the United States government

Water-quality summary of the San Marcos Springs Riverine System, San Marcos, Texas, July-August 1994

August 1, 1997

San Marcos Springs is the second largest spring in Texas and is the headwaters for the San Marcos River in San Marcos. Spring Lake (fig. 1) was built in 1848 at the site of a marsh formed by the springs to provide hydropower to a mill. The San Marcos River originates from the 15-acre lake and flows approximately 4 river miles (mi) south to its confluence with the Blanco River. The mean annual flow of the San Marcos River is about 170 cubic feet per second (ft3/s).

Citation Information

Publication Year 1997
Title Water-quality summary of the San Marcos Springs Riverine System, San Marcos, Texas, July-August 1994
DOI 10.3133/fs05997
Authors R.N. Slattery, Lynne Fahlquist
Publication Type Report
Publication Subtype USGS Numbered Series
Series Title Fact Sheet
Series Number 059-97
Index ID fs05997
Record Source USGS Publications Warehouse
USGS Organization Texas Water Science Center