Guadalupe River, Texas

This Is a River, Not a Lake -- and That Distinction Matters

Unlike every other water body in this Texas guide, the Guadalupe River is not a managed reservoir with a single operator and a stable pool elevation. It's a roughly 230-mile free-flowing river with only one major dam along its course, Canyon Dam, built by the U.S. Army Corps of Engineers between 1958 and 1964 primarily for flood control. Everything about how you research property here, from water levels to flood risk to river access, works differently than it does on a lake.

Two Genuinely Different Stretches Deserve Two Different Conversations

The stretch below Canyon Dam through Comal County and New Braunfels is regulated in a real, practical sense -- the Guadalupe-Blanco River Authority manages a recreational release schedule roughly April through August, and the river here supports a large, long-running tubing and tourism economy. The stretch above Canyon Lake, through Kerr County towns like Hunt, Ingram, and Kerrville, is unregulated and rain-driven, part of what meteorologists call "Flash Flood Alley." These two stretches carry meaningfully different risk profiles, and this guide treats them as distinct rather than describing "the Guadalupe River" as a single, uniform place.

The July 2025 Flood Is Essential Context for This River

On July 4, 2025, a catastrophic flash flood struck the unregulated upper Guadalupe in Kerr County, with the river rising over 20 feet in under an hour in places and reaching a record-setting crest near Hunt. More than 130 people died, including 27 at Camp Mystic, a girls' summer camp directly on the riverbank. This is one of the deadliest flooding events in modern Texas history, and it is essential, factual context for anyone researching property anywhere along this river's upper reaches. Our water levels and flood risk page covers this in the detail it deserves.

New Braunfels Anchors a Long-Running Tourism Economy

New Braunfels, the river's largest and fastest-growing city, has built a genuinely major tubing and outdoor recreation economy around the dam-regulated stretch below Canyon Dam, drawing an estimated $1.3 billion in local economic impact in a recent year. This is a different market, with a different risk profile, than the camps and rural communities upstream in Kerr County.

Texas Riparian Law Shapes Access Differently Than a Lake

Because most of the Guadalupe qualifies as a navigable stream under Texas law, the streambed itself belongs to the public even where private land runs to the water's edge -- but there's no automatic right to cross private property to reach it. This dual structure, public water and private banks, shapes how tubing outfitters, riverfront homeowners, and public parks all interact along this river.

Canyon Lake Itself Is a Separate, Related Water Body

Canyon Lake, the reservoir created by Canyon Dam, is a related but genuinely distinct property market from the river itself -- a stable, USACE-managed reservoir with its own marinas and lake-house dynamics, quite different from either the New Braunfels tubing corridor downstream or the free-flowing Kerr County stretch upstream. Buyers comparing river frontage against lake frontage in this same general region should treat Canyon Lake as its own separate consideration.

What This Guide Covers

The pages below cover property tax, buying considerations, river access and riparian rights, the honest flood-risk picture for both stretches of the river, fishing (including a cold-water trout fishery below Canyon Dam that wouldn't otherwise be possible in Texas), tubing and recreation, and flood insurance realities given this river's documented history. Read each page in full before drawing any conclusions about a specific stretch of this river.