https://www.sanmarcosriver.org/water-quality-monitoring
Water Quality Monitoring — The San Marcos River Foundation
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https://www.bonfire.com/store/san-marcos-river-foundation-merchandise/
San Marcos River Foundation Merchandise | Bonfire
San Marcos River Foundation Merch Store. The San Marcos River Foundation's mission is to preserve and protect the flow and purity of the San Marcos Springs and...
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https://www.sanmarcosriver.org/sponsors
Sponsors — The San Marcos River Foundation
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https://www.sanmarcosriver.org/cart
The San Marcos River Foundation
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https://www.sanmarcosriverresort.com/
San Marcos River Resort
Cabins, RV Sites, and Tent Sites along the San Marcos River.
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https://www.sanmarcosriver.org/invasive-species-removal
Invasive Species Removal — The San Marcos River Foundation
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https://www.sanmarcosriver.org/parks-greenspaces
Parks & Greenspaces — The San Marcos River Foundation
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https://www.sanmarcosriver.org/awardrecipients
Award Recipients — The San Marcos River Foundation
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https://www.sanmarcosriver.org/staff
Staff — The San Marcos River Foundation
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https://www.sanmarcosriver.org/history
History — The San Marcos River Foundation
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https://www.sanmarcosriver.org/sanmarcosriver
San Marcos River — The San Marcos River Foundation
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https://texasstatetubes.com/
Texas State Tubes | San Marcos River Tubing Adventures
Come join us for a fun tubing trip! We are located right off the San Marcos River – just east of San Marcos and only 35 minutes south of Austin. Book today.
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https://www.sanmarcosriver.org/
The San Marcos River Foundation
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https://www.tubesanmarcos.com/
San Marcos River Tubing | Lions Club Tube Rental
Float the spring fed San Marcos River with Lions Club Tube Rental, a nonprofit tube rental and shuttle at City Park in San Marcos, Texas that supports local...
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https://sanmarcosriverresort.com/
San Marcos River Resort
Cabins, RV Sites, and Tent Sites along the San Marcos River.
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https://austintubingtrips.com/
Austin Tubing Trips | San Marcos River Tubing Near Austin
Apr 13, 2026 - Austin Tubing Trips on the San Marcos River with transportation, cooler-friendly floats, and easy booking for groups near Austin.
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