San Marcos River

During the 38th Annual Great Texas River Cleanup, volunteers will trek along various watersheds — on foot and in canoes — to keep thousands of pounds of trash from flowing into the Gulf of Mexico.

A new student-made art installation in San Marcos depicts the Coahuiltecan creation story and the five guardians of the San Marcos River.

A grassroots group, known as Protect the River, has sprung up in response to the film studio's development. Its goal is to protect the San Marcos River and the Edwards Aquifer from development.

Have you ever wondered how much water will be flowing from the San Marcos Springs in the next 10 years? 20 years? 50 years? Researchers at Texas State University's Meadows Center are working on a new public dashboard to answer those questions for communities statewide.

A research team has spent the last few months harvesting water hyacinth as part of an effort to turn invasive species into sustainable and functional materials.

Humans only knew about the San Marcos gambusia for about 10 years before it allegedly disappeared from its only known habitat.

The city received the official designation earlier this year. It will celebrate its mermaid pride at a parade and street fair Saturday.

River otters have been making a comeback in Central Texas for the past few years. But this past summer, otters were spotted where they typically haven’t…