The Spring Lake Preserve: A Undiscovered Jewel for Walkers and Birders|
https://irvinglandmarks.opalvector.com/posts/the-san-marcos-area-where-the-waterway-runs-crystal-clear-365-days-a-year
Venture Into Spring Lake Natural Area in San Marcos—hundreds of acres of pathways, wildflower flats, and woodlands above the River birthplace