If you’re thinking about relocating to the Highland Lakes, the swim-safety question usually shows up alongside a bigger one: should you buy on the water, near the water, or a few miles back from it? I’ve written up the general swim-safety breakdown for Lake LBJ and Lake Marble Falls in detail over on my full guide at RobbieEnglish.com — that’s the place to go if you want the specifics on bacteria after rain, Naegleria fowleri risk, and general swim conditions. What I want to cover here is what that safety picture actually means once you’re evaluating a specific property.
Quick Answer
Generally, yes — with real conditions worth knowing. Lake LBJ and Lake Marble Falls are LCRA-managed lakes, and under normal conditions they’re no riskier than any other Texas Hill Country lake. The real caution windows are specific and predictable: after heavy rain or flood events, the Lower Colorado River Authority (LCRA) has advised avoiding the Highland Lakes for roughly two weeks due to elevated bacteria (including E. coli) and floating debris washed in from upstream. LCRA has also, at times, detected cyanotoxins (blue-green algae) in Lake LBJ specifically, and has monitored for them across the Highland Lakes chain since 2021. Outside of storm aftermath, LCRA’s standing guidance is simple: avoid cloudy, smelly, or murky water and any area with visible debris or stirred-up sediment. That’s normal lake common sense, not a sign these particular lakes carry unusual risk.
Why This Question Comes Up During House Hunting
I hear a version of “is it safe to swim here?” from almost every buyer touring waterfront or near-water listings in Marble Falls, Horseshoe Bay, Kingsland, and the rest of the Highland Lakes. It’s rarely just curiosity — it’s usually a proxy for a handful of real, practical questions: Will my kids be able to swim off our own dock? Does this lot flood or silt up after heavy rain? Is this the kind of water frontage that holds its value?
How Lake Type Affects the Property, Not Just the Swim
Lake LBJ and Lake Marble Falls are both LCRA pass-through lakes, kept within a fairly narrow operating range under normal conditions rather than swinging with rainfall and dam releases the way Lake Buchanan and Lake Travis do. That’s a meaningful detail for a buyer, not just a swimmer: a dock that’s usable in June is usually still usable in December on either lake, and shoreline erosion patterns are more predictable than on the larger flood-control reservoirs. Even so, both lakes can still rise above their normal range during a flood event, so steady isn’t the same as fixed. Lake Marble Falls is smaller and quieter than Lake LBJ, which suits different priorities, and I walk buyers through which one matches how they actually plan to use the water.
Questions Worth Asking Before You Write an Offer
- Does the lot have deeded water access, or is it a shared/easement access point? This affects both usability and resale value.
- Is there an existing dock, and is it permitted? Unpermitted docks on Highland Lakes properties can become the buyer’s problem to resolve after closing.
- What’s the shoreline like at low water versus normal pool? A gorgeous waterfront lot in May can look very different by late summer on a level-fluctuating lake.
- Is the cove or inlet prone to sediment buildup or poor circulation? Slow-moving water in a shallow cove is exactly the kind of spot to be more cautious about — both for swimming and for long-term water quality near the property.
- What are the HOA or POA rules on docks, boat lifts, and shoreline modifications? Some Highland Lakes communities have specific requirements that affect what you can build or change.
How This Plays Into Insurance and Long-Term Costs
Waterfront and near-water properties in the Highland Lakes can carry different insurance considerations than a home a few streets back — flood zone designation, dock/boathouse coverage, and sometimes higher premiums depending on the specific lake and location. I always encourage buyers to get a real insurance quote on a specific property before finalizing an offer, not after, since it can meaningfully change the true cost of ownership.
Choosing the Right Distance From the Water for How You’ll Actually Live
Not every buyer relocating here needs to be directly on the lake. Plenty of my clients end up happier a short golf-cart ride from a community boat ramp or marina than dealing with shoreline maintenance, dock upkeep, and the premium price tag that comes with true waterfront. Part of my job is helping you figure out which version of “near the water” actually fits your life — not just which listing photos look the best.
Frequently Asked Questions
Is Lake LBJ safe to swim in?
Generally yes. LCRA-managed lakes like LBJ and Marble Falls carry normal Texas-lake precautions rather than unusual risk, with the main caution window being roughly two weeks after major rain or flood events.
Does rain affect swimming safety on Lake LBJ?
Yes. LCRA has advised avoiding the Highland Lakes for about two weeks after significant flooding due to elevated bacteria, including E. coli, and floating debris washed in from upstream.
Has toxic algae been found in Lake LBJ?
LCRA has at times detected cyanotoxins (blue-green algae) in Lake LBJ and has monitored for them across the Highland Lakes chain since 2021.
Does Lake LBJ’s water level stay constant?
Yes, under normal conditions. Lake LBJ and Lake Marble Falls are LCRA pass-through lakes kept within a narrow operating range, unlike Lake Buchanan and Lake Travis, which fluctuate more with rainfall and water demand.
Related Reading
Let’s Talk About Your Specific Situation
If you’re weighing a waterfront lot against a near-water property anywhere in the Highland Lakes, I’d rather walk the actual shoreline with you than have you guess from listing photos. Reach out and let’s talk through what you’re looking for, or start browsing what’s currently available in Marble Falls and the surrounding lake communities.
Water quality guidance referenced from LCRA.
