I too grew up on the Guadalupe River. Lived there over 30 years. I'm an old and my family homesteaded on the Guadalupe in the mid 1800's. Family still owns land on the river.
All of the land along the Guadalupe in the hill country originally was all ranches with similar homesteading backgrounds.
If you research the locations of the original barns and ranch houses, few, were ever washed away in floods.
Many of those old immigrants around Kerrville, Spring Branch, New Braunfels…were from the Elbe River valley in Germany.
They had generations of experience of river life.
Upon settling in Texas along the Guadalupe they were very attuned to reading the land and where to build homes out of the harms way of river floods.
They didn't have maps with lines of 100 year or 500 year projected floods. They had the knowledge to read the land.
An example of that is this…. Right after the war my dad purchased a small piece of land on the Guadalupe from my then great grandfather. He picked a spot for the house that surveyed 49' above normal pool stage of the river.
My grandfather told him not to build the house there. He based that on the fact that one of his fields, even higher in elevation of the house sight, had sandy loam soil that my grandfather said was deposited by the river hundreds or thousands of years ago…..evidence that the river could indeed get that high.
Mind you the family had been there since the mid 1880's and had never witnessed the river even getting close to that high…but they knew….by looking at the land….that he definitely had been that high over time.
Against what my grandfather said, Dad built our home on that spot anyway.
Well in 1978 the Guadalupe had a catastrophic flood and our house got 3' of water through it and washed our entire barn away that was 8' lower in elevation of our house. It reached the same flood stage the next night as well.
The gauge by Spring Branch measured a little over 42' but at Rebecca Creek it was measured at 51'.
In Comparison the 2025 flood measured 35' feet at Spring Branch I believe.
Bottom line is that flood in 1978 was above the then marked 100 year flood plain.
However the old homestead house and barns were not even close to getting water to them.
Those old settlers definitely had the knowledge…..we should have learned from them.
TAMU Wildlife and Fisheries Sciences
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