Texas treats water under two separate legal systems. Groundwater beneath a ranch generally belongs to the landowner under the rule of capture and transfers with the surface estate unless it has been severed. Surface water — rivers, streams, and most creeks — belongs to the State of Texas and is used only under a permit issued by the TCEQ. Buying the land does not automatically buy the right to use the water on it.
That distinction is the whole subject. Understanding water rights when purchasing a Texas ranch means knowing which of the two systems governs each water feature on the property, and confirming in writing what conveys at closing. At The Agency Dallas, water is the first item we investigate on any ranch file, because it is the variable that most often changes what the land can actually be used for.
Who owns the groundwater under a Texas ranch?
The surface owner does, as a general rule. Texas adopted the rule of capture in 1904, and it remains the governing doctrine: a landowner owns the water beneath their land and may pump it, subject to limits.
Those limits are real and they have grown:
- Groundwater Conservation Districts (GCDs) regulate spacing, production, well registration, and permitting across much of the state. Whether the ranch sits inside a district — and which district — determines how much water you may legally produce and what you must file to do it. Two adjoining tracts in different districts can operate under materially different rules.
- Groundwater rights can be severed from the surface estate and conveyed or reserved separately, the same way minerals are. A previous owner may have kept them.
- Historic use and existing permits may or may not transfer automatically. Permits are administered by the district, and transfer requirements vary.
Ask three questions on every ranch: Is the property inside a GCD, and which one? Are the groundwater rights intact with the surface estate, or has any portion been severed or reserved? Are there existing wells, and are they registered and permitted?
What about ponds, tanks, creeks, and rivers?
Surface water in Texas belongs to the state and is allocated under prior appropriation — first in time, first in right. A right to divert and use state water comes from a TCEQ water right permit, not from owning the bank.
There is an important exemption for ranch operations. Under Texas Water Code §11.142, a landowner may construct a dam or reservoir on their own property to impound up to 200 acre-feet of water for domestic and livestock purposes without obtaining a permit. That is the legal basis for the stock tank on nearly every North Texas ranch. Note the boundaries of the exemption: it covers domestic and livestock use, not irrigation of a commercial crop, not a commercial fishery, not resale.
Where an actual TCEQ water right exists — for irrigation, for example — it is a property interest of its own. It must be expressly conveyed by a recorded document, and after closing the new owner must file a change-of-ownership notice with the TCEQ. A water right does not follow the deed by silence.
What does the seller have to disclose about water?
As of 2026 there is a dedicated form. TREC Form 61-0, "Seller's Disclosure Notice about Groundwater and Surface Water Rights" (adopted under 22 TAC §537.68 on May 4, 2026, effective July 1, 2026) requires a seller to disclose what they know about:
- Whether the property lies within a Groundwater Conservation District
- Existing wells, their status, and their registration or permitting
- Whether any groundwater rights have been severed, leased, or reserved
- Any surface water rights, permits, or claims associated with the property
- Ponds, tanks, and impoundments on the property
The form is a disclosure of the seller's knowledge, not a title opinion. Treat it as the starting point of the investigation rather than the conclusion. A seller who has run cattle on a place for twenty years may sincerely not know that a predecessor reserved a half interest in the groundwater.
What should you actually do during the option period?
A workable water-diligence sequence on a Texas ranch:
- Get the TREC 61-0 disclosure and read it against the title commitment.
- Identify the GCD, if any, and call the district. District staff will tell you the well registration status, the production limits, and the spacing rules that apply to the tract.
- Run a groundwater title review. Ask the title company specifically whether the commitment reflects any severance or reservation of groundwater. This is not part of a routine residential review and must be requested.
- Search TCEQ records for any water right of record associated with the property, and confirm whether the seller intends to convey it.
- Inspect and test every well — flow rate in gallons per minute as well as water quality. Confirm the casing depth, the pump condition, and whether the well is registered.
- Measure the impoundments. If the ranch has a tank or a series of tanks, confirm the total impounded volume sits inside the 200 acre-foot domestic-and-livestock exemption, and that the dam was built lawfully.
- Match the water to the intended use. A property with adequate water for forty cow-calf pairs may be badly short for a vineyard, a commercial hay operation, or a twenty-lot subdivision.
That last item is where most disappointment originates. Water in Texas is not a yes-or-no asset. It is a quantity, tied to a use, governed by a district or a permit. The Agency Dallas approaches water rights when purchasing a Texas ranch by defining the buyer's intended use first and then testing whether the property's water actually supports it — because the same 300 acres can be entirely sufficient or entirely inadequate depending on what you plan to do.
Water sits alongside the rest of rural due diligence — see our companion piece on what surveys and inspections you need when buying acreage in Texas for the full sequence, and our land and ranch page for how we work these files. Buyers weighing a ranch against other North Texas options may also want our explanations of builder phase pricing and lot premiums and how to analyze a Dallas rental property before making an offer.
Frequently asked questions
Do water rights automatically transfer when I buy a Texas ranch?
Groundwater rights generally pass with the surface estate unless they were previously severed or reserved. Surface water rights do not pass by silence — a TCEQ permit must be expressly conveyed by a recorded document and the new owner must notify the TCEQ of the ownership change after closing.
Can I build a new stock tank on my ranch without a permit?
Texas Water Code §11.142 allows a landowner to impound up to 200 acre-feet on their own property for domestic and livestock use without a TCEQ permit. Irrigation of a commercial crop, commercial fish production, and resale fall outside that exemption and require a permit.
What is a Groundwater Conservation District and how do I know if I am in one?
A GCD is a local entity that regulates groundwater production, well spacing, and well registration within its boundaries. Coverage is not statewide. Call the district directly, or ask your agent to confirm the property's district status — the answer changes how much water you may legally produce.
Does the seller have to tell me about wells and water rights?
Since July 1, 2026, TREC Form 61-0 requires sellers to disclose known information about groundwater districts, wells, severed groundwater rights, surface water rights, and impoundments. It reflects the seller's knowledge only, so verify each item independently through the district, the title company, and the TCEQ.
How do I find out whether a well produces enough water?
Have the well tested for flow rate in gallons per minute in addition to a standard potability test. Potability tells you the water is safe; flow rate tells you whether it can actually serve a household, livestock, and any irrigation you intend. Both tests are inexpensive relative to the consequence of skipping either.
