The relevant fact is not that Austin has water. It is that Austin's water stays the same temperature all twelve months. Constant spring flow near seventy degrees means a dog with genuine water drive — and a coat described in the standard as water-resistant, which is a working gundog trait rather than a decorative one — will swim in January as readily as in July. Add Red Bud Isle and the Lady Bird Lake shoreline and there is no season in which a determined Welsh Springer stays dry.
That removes something owners in colder cities get for free. Elsewhere, a winter break gives an irritated canal months to settle, which is often why a summer infection does not become a chronic pattern. In Austin the exposure is continuous, so the management has to be continuous too. This is not an argument against swimming — it is genuinely the best exercise available for this breed in a city with dozens of hundred-degree days. It is an argument for treating post-swim drying as a twelve-month routine and building the cost of it into the annual budget rather than the summer one.