By Ryan Switzer, Co-Owner of Waterfront Luxury Group. Last updated November 5, 2026.
Lake Dunlap, Lake McQueeney and Lake Placid are stretches of the Guadalupe River held back by small hydroelectric dams. That’s what makes them good for boating, but it also means a lake home here sits on a river that can flood. Flood insurance is one of the first things to look at when you buy, and one of the most misunderstood.
Here’s how flood insurance works for lake homes on these lakes, what it covers, what it doesn’t, and what to check before you make an offer.
The Short Answer
- The dams aren’t flood control: GBRA says that in major floods the lakes become an uncontrolled flooded river.
- Homeowners insurance usually doesn’t cover floods. Flood insurance is a separate policy.
- Your dock and bulkhead aren’t covered by the standard federal flood policy.
- Timing matters: New policies usually take 30 days to start, unless you buy one when you close on a mortgage.
Why Flooding Matters on These Lakes
The dams on Lake Dunlap, Lake McQueeney and Lake Placid were built to make electricity, not to hold back floods. GBRA’s flood safety guide says that in floods bigger than the spillways can handle, which is the case in major floods, the lakes become an uncontrolled flooded river and the dams provide no flood protection. The same guide notes that Canyon Dam, upstream, is the only flood control dam on the Guadalupe.
So when you look at a home on these lakes, look at it the way you’d look at any home on a river: how high it sits, how close it is to the water, and what has happened there before. Our Guadalupe lakes comparison explains how the six lakes differ.
Is Flood Insurance Required?
It depends on the flood zone and the loan. FEMA’s flood maps mark high-risk areas, called special flood hazard areas, with zones that begin with A or V. Federal law requires flood insurance for a building in one of those areas when it has a loan from a federally regulated or insured lender. If you’re financing a home in a high-risk zone, expect your lender to require it.
Outside the high-risk zone, flood insurance is usually optional, but that doesn’t mean the risk is zero. FEMA says almost one-third of flood insurance claims from 2014 to 2024 came from outside high-risk areas. If you’re paying cash, nobody will require it, so the decision is yours.
How to Check a Home’s Flood Risk
- Look up the address on FEMA’s flood map service to see its flood zone.
- Read the seller’s disclosure. In Texas, the seller’s disclosure notice asks about current flood insurance, past flooding from a natural flood or a reservoir release, and whether the property is in a 100-year or 500-year floodplain, a floodway, a flood pool or a reservoir.
- Ask for an elevation certificate. It shows how high the home sits compared with expected flood levels. The seller, the county floodplain office or a licensed surveyor may be able to provide one.
- Ask about the current policy. If the seller has flood insurance, ask for the declarations page and the premium.
What Flood Insurance Covers, and What It Doesn’t
Most flood insurance is written through FEMA’s National Flood Insurance Program (NFIP). For a home, FEMA says building coverage goes up to $250,000 and contents coverage up to $100,000, bought separately.
For lake homes, the bigger surprise is what’s left out. FEMA’s list of things outside the building that aren’t covered includes landscaping, septic systems, decks and patios, fences and pools. The standard dwelling policy also excludes retaining walls, seawalls, bulkheads, piers and docks, and boathouses or other structures that boats float into.
In other words, the waterfront you’re paying a premium for usually isn’t covered by flood insurance. Ask your insurance agent what, if anything, can cover the dock, lift and boathouse, and keep good records of their condition. Our guide to inspecting a lake home explains how to check them before you buy.
If the home would cost more than $250,000 to rebuild, ask about excess flood coverage too. Private insurers also sell flood policies, so it’s worth comparing quotes with an agent who writes both.
Timing: The 30-Day Wait
A new NFIP policy normally takes effect 30 days after you buy it. There’s no wait when you buy it while making, increasing, extending or renewing a mortgage, so a policy bought for your closing can start at closing. Cash buyers should plan around the 30 days.
If the seller already has an NFIP policy, FEMA says it can be transferred to the buyer. Ask your insurance agent whether taking over the existing policy or starting a new one makes more sense for you.
Either way, get a quote during your option period, before you’re locked in. A flood premium can change what a home really costs you each year.
Before You Buy: A Quick Checklist
- Flood zone from FEMA’s map
- Seller’s disclosure answers about flooding and flood insurance
- Elevation certificate, if one exists
- The seller’s current flood policy and premium
- Quotes for NFIP and private flood insurance
- Your lender’s flood insurance requirement, if you’re financing
Planning to build or rebuild a dock or bulkhead later? Guadalupe County requires a floodplain permit for that kind of work in a regulated flood zone, on top of GBRA’s permit. Our GBRA dock permit guide covers both.
Frequently Asked Questions
Do the dams protect lake homes from floods?
No. GBRA says the hydroelectric dams weren’t built for flood control, and in major floods the lakes become an uncontrolled flooded river. Canyon Dam is the only flood control dam on the Guadalupe.
Does homeowners insurance cover flooding?
Usually not. FEMA says most homeowners and renters policies don’t cover flood damage, so flood insurance is a separate policy.
Is flood insurance required on a lake home?
It’s required if the home is in a high-risk flood zone and you have a loan from a federally regulated or insured lender. Outside those zones it’s usually optional, though some lenders still ask for it.
Does flood insurance cover my dock or bulkhead?
Not under the standard NFIP dwelling policy, which excludes docks, piers, bulkheads, seawalls and retaining walls. Ask your agent about other options.
How long does it take for flood insurance to start?
Usually 30 days. There’s no wait if you buy it while making, increasing, extending or renewing a mortgage.
Questions About a Lake Home?
We live on these lakes, and we’re happy to help you sort out what’s on record for a home you’re considering. Call us at 830.369.2032, send us a message, or search lakefront homes for sale.
This post is general information, not insurance or legal advice. It reflects FEMA, GBRA and Texas sources as of November 5, 2026. Coverage, prices and rules vary, so talk with a licensed insurance agent about a specific property before you act.
About the Author
Ryan Switzer is co-owner of Waterfront Luxury Group with Keller Williams Heritage, co-founded with Chad Johnson. Based on Lake Placid in Seguin, Ryan helps buyers and sellers find the right spot on the water on Lake Dunlap, Lake McQueeney, and Lake Placid.