Livestock Water Rights in South Dakota: What Every Producer Needs to Know

Water is the foundation of every livestock operation in South Dakota, yet many ranchers and farmers are surprised to learn how tightly the state regulates who can use it, how much, and when. Whether you run cattle on the shortgrass prairies west of the Missouri or manage a hog confinement east of the river, the rules governing your water access are more specific — and more consequential — than most producers realize.

South Dakota sits squarely on the 100th Meridian, the climate dividing line between the wetter eastern United States and the semi-arid west. That geography shaped a water law system that blends two distinct doctrines, and understanding how those doctrines interact is the first step toward protecting your operation’s water supply. This guide walks through each layer of the system as it applies to livestock producers.

Important Note: This article is for general informational purposes only and does not constitute legal advice. Water rights law is fact-specific. Consult a licensed South Dakota attorney or contact the South Dakota Department of Agriculture and Natural Resources (DANR) Water Rights Program directly at 605-773-3352 for guidance on your specific situation.

How South Dakota’s Water Rights System Affects Livestock Producers

According to South Dakota Codified Law (SDCL) 46-1-3, all water within the state is the property of the people of the state, but the right to use water may be acquired by appropriation as provided by law. That single sentence carries enormous practical weight for livestock producers. You do not own the water under your land or flowing through your pasture — you hold a right to use it, and that right must be established and protected.

South Dakota became a hybrid state with both a riparian system and a prior appropriation system. The riparian system is used primarily for small domestic water uses, while the doctrine of prior appropriation is used for managing all other water uses. Domestic riparian water uses take preference over other water uses, and the doctrine of prior appropriation is the means now used to protect water users and manage South Dakota’s water resources.

South Dakota water rights are administered by a system commonly called the “Doctrine of Prior Appropriation.” This means the first in time (senior priority) is the first in right, except for individual domestic use. Priority is established based on the date of filing the application. For livestock producers, this means that if two ranchers both want water from the same creek during a dry summer, the one who filed first wins — and the junior right holder may receive nothing.

The seven-member Water Management Board regulates water use, approves and denies permits, validates vested rights, cancels water right permits or rights, and establishes ordinary high and low water marks for lakes as well as setting lake outlet elevations. The Board is the central authority you will deal with whenever your water use grows beyond the domestic exemption threshold. You can learn more about related South Dakota agricultural regulations in our overview of goat ownership laws in South Dakota.

Key Insight: Vested water rights — those established before March 2, 1955 for surface water or February 28, 1955 for groundwater — can still be claimed today. If your family has operated a stock water source since before those dates, you may qualify for a vested right rather than a new permit.

Stock Water Exemptions and What They Cover in South Dakota

The most important concept for small and mid-sized livestock operations is the domestic use exemption. The only type of water use that does not require a water right permit is domestic use. However, even domestic use of water requires a permit if your water use exceeds either 25,920 gallons per day or a peak pump rate of 25 gallons per minute.

Examples of domestic water uses include drinking, washing, sanitary, and culinary uses by an individual or household; irrigation of a noncommercial garden, trees, and similar uses not exceeding one acre in size; stock watering; and 18 gallons per minute for use in schools, parks, and public recreation areas. Stock watering is explicitly listed as a domestic use, which means a typical ranch well supplying cattle, horses, or hogs at reasonable volumes operates without a formal water right permit.

The exemption, however, has clear edges. Livestock uses within a confinement operation not exceeding reasonable domestic use, or stock watering outside of a confinement operation, are exempt from permit requirements. Once a confinement operation’s water demand grows beyond “reasonable domestic use,” the exemption no longer applies and a permit is required. The South Dakota DANR Water Rights Dictionary defines stock watering as the watering of domestic and other farm animals, and livestock in confinement feeding operations that do not exceed reasonable domestic use.

Domestic use for farm, ranch, household, and livestock use from other than a common water distribution system in excess of either 25,920 gallons per day (18 gpm continuously for a day) or 25 gpm (peak rate) requires a permit. If you are running a large feedlot, a commercial dairy, or any operation where your water pull consistently approaches those thresholds, you need a water right permit — not just a well.

Water Use Scenario	Permit Required?	Relevant Authority
Stock watering on open range (below 25,920 gpd / 25 gpm peak)	No	SDCL 46-1-6(7); ARSD 74:02:01:03
Livestock confinement operation within reasonable domestic use	No	ARSD 74:02:01:03
Livestock confinement operation exceeding reasonable domestic use	Yes	ARSD 74:02:01:03
Farm/ranch well exceeding 25,920 gpd or 25 gpm peak	Yes	DANR Water Rights Program

How to Secure a Water Right for Livestock Use in South Dakota

If your operation exceeds the domestic exemption thresholds — or if you simply want a documented, protected priority date for your stock water source — you will need to apply for a water right permit through the South Dakota DANR Water Rights Program.

An application to appropriate water must be filed on forms supplied by the chief engineer. Information needed on the application includes the water source, amount of water to be claimed, diversion point locations, annual period during which water may be used, and type of use. The application also needs to include a map of the project, the application fee, and supplemental information such as the storage capacity of impoundment structures or a well driller’s test hole or well log, when applicable.

Upon receipt of a completed application, the Water Rights Program prepares a report and a recommendation is prepared by the chief engineer to either approve, deny, or defer action on the application. If recommended for approval, qualifications are often attached restricting water use under certain conditions and requiring annual reporting of water use. A permit to appropriate water may be issued only if there is a reasonable probability that unappropriated water is available and the proposed diversion can be developed without unlawful impairment of existing rights.

The permit includes information supplied on the application, any qualifications attached by the chief engineer or Water Management Board, and the time periods during which the project must be constructed and water placed to beneficial use. The statutory length of time allowed for construction of works is five years from the date of approval and an additional four years to place the water to beneficial use. Missing these deadlines without an approved extension can result in permit cancellation.

The time frame for completing your project — five years to construct and four additional years to place water to beneficial use — and a priority date are assigned to the permit. This priority date is important because during periods of limited water availability the oldest water right permit has first call on any available water.

Pro Tip: File your application as early as possible. Your priority date is set by the date your application is received, not the date your well or diversion structure is completed. Earlier filing means a more senior priority, which matters most during drought years.

Once construction is complete, you must file a Notice of Completion of Works with the Water Rights Program. You will be provided a “Notice of Completion of Works” form so that you may notify the Water Rights Program when your project is completed. This notice informs the program that your project is ready for an inspection to license your water use, which is the final step in getting a water right.

Stock Ponds, Reservoirs, and Impoundment Rules in South Dakota

Stock ponds and dugouts are a cornerstone of South Dakota range management, providing reliable water for cattle across thousands of acres of pasture. The state’s rules on when these structures require a permit depend on where you build and how much water they hold.

A water permit is not required to construct a dam or dugout on either a dry draw as defined by SDCL 46-1-6(8) or a nonnavigable watercourse if the dam or dugout stores 25 acre-feet or less of water. That threshold gives most small ranch stock ponds a clear path to construction without a permit. An acre-foot equals roughly 325,851 gallons, so 25 acre-feet represents a substantial pond volume suited to most range livestock operations.

However, the permit-free window has firm limits. A water permit is required to construct a dam across a navigable watercourse for any purpose. A water permit is also required to construct a dam or dugout on either a dry draw or nonnavigable watercourse if the dam or dugout stores more than 25 acre-feet of water.

Diversion of water from any dam or dugout requires a water right permit or right unless exempted from permitting by this section. This is a detail many producers overlook: even if your pond itself does not require a permit, pumping or diverting water out of it for use elsewhere on your operation may trigger a separate permit requirement. Always check with DANR before installing pump systems on an existing impoundment.

• Pond on a dry draw or nonnavigable watercourse storing 25 acre-feet or less: no permit needed for construction
• Pond on a dry draw or nonnavigable watercourse storing more than 25 acre-feet: permit required
• Dam on any navigable watercourse: permit required regardless of storage volume
• Diversion of water from any impoundment: permit required unless a specific exemption applies

If you are planning a larger reservoir project, the Safety of Dams program within DANR applies additional engineering and inspection requirements for structures meeting certain height and storage thresholds. For the purpose of the dam safety chapter, an artificial barrier that impounds or diverts water and is 25 feet or more in height from the natural bed of the stream or has an impounding capacity of 50 acre-feet or more is regulated as a dam. A barrier is not considered a dam for the purpose of that chapter if the height does not exceed 6 feet regardless of storage capacity, or if the storage capacity does not exceed 15 acre-feet regardless of height.

For producers interested in other aspects of managing their South Dakota land and animals, our guide to tick season in South Dakota covers pasture-related health risks you should also keep in mind.

Groundwater Access for Livestock Operations in South Dakota

Many South Dakota livestock producers rely on wells rather than surface water, particularly in the drier western counties. Groundwater access comes with its own set of rules, and the state’s approach to aquifer management directly affects how much you can pump.

The South Dakota legislature passed South Dakota Codified Law 46-6-3.1 in 1978 concerning water rights and the management of groundwater. The law essentially prevents the withdrawal of groundwater in excess of the average estimated annual recharge to the groundwater source. It is meant to ensure that groundwater supplies will be available in perpetuity to all domestic users and water right permit holders.

South Dakota water laws do not allow the “mining” of groundwater. “Mining” occurs when the average quantity of water pumped annually from a groundwater aquifer exceeds the estimated average annual recharge to the aquifer. There are a few areas in South Dakota where additional water right permits are not being approved for this reason. If your operation is located in one of these restricted aquifer zones, you may not be able to obtain a new groundwater permit even if you meet all other requirements.

All wells drilled for livestock operations are subject to construction standards. All wells must be completed in accordance with South Dakota Well Construction Standards. A well driller must be licensed to drill water wells in South Dakota. The driller is required by law to file a copy of a well completion report with the Water Rights Program within 30 days of completion of each well. Hiring an unlicensed driller can create legal complications with your water right and void your ability to claim a priority date.

A well owner is not necessarily guaranteed that water from a flowing well or from a pump placement that relies on head pressure will always be available. A pump must be capable of being placed 20 feet into the aquifer or set as near to the bottom of the aquifer as practical if the aquifer is less than 20 feet thick. This design requirement ensures that wells remain functional as aquifer levels fluctuate — a real concern during multi-year drought cycles on the plains.

Pro Tip: Even if your livestock well currently falls under the domestic exemption (below 25,920 gpd or 25 gpm peak), consider voluntarily registering a water right permit. A documented priority date protects you if a neighboring operation later drills a high-volume well that affects your aquifer.

To monitor groundwater recharge and withdrawals, the South Dakota Water Rights Program relies on pumping information provided by water permit holders, groundwater levels measured through the South Dakota Observation Well Network and its collection of nearly 1,600 monitoring wells, along with past and future hydrologic studies. Permit holders are expected to report their annual water use, and that data feeds directly into decisions about whether new permits will be approved in your area. You can contact the DANR Water Rights Program for current aquifer status information relevant to your county.

For more context on South Dakota’s broader animal and land regulations, see our article on livestock trailer requirements in South Dakota and the rules around transporting livestock in South Dakota.

Water Rights During Drought and Shortage in South Dakota

Drought is not a hypothetical risk for South Dakota livestock producers — it is a recurring operational reality. The state’s prior appropriation system was specifically designed to manage scarcity, and understanding how it functions under shortage conditions can mean the difference between keeping your herd watered and watching your junior water right get shut off.

During a drought, the South Dakota Water Rights Program will see an increase in permit applications. According to Water Rights personnel, the permitting load can increase anywhere from two to four times what they might see in a normal year. This surge happens because producers who have relied on informal water sources suddenly need documented rights when those sources dry up and competition for remaining water intensifies.

The prior appropriation doctrine governs shortage allocation directly. During periods of limited water availability, the oldest water right permit has first call on any available water. However, domestic water uses typically take preference over all water uses for which a permit is needed. This means that even a senior irrigator can be cut off if the remaining water is needed for domestic stock watering — a protection that benefits small livestock operations using the domestic exemption.

A water shortage is defined under South Dakota Administrative Rules as the lessened water supply conditions existing in an aquifer during a period of substantially less than average annual recharge. When a shortage is declared for a specific aquifer, the Water Management Board has authority to restrict or curtail permitted groundwater withdrawals based on priority dates, with junior permit holders facing restrictions first.

A permit can only be revoked if the water is not used, if more groundwater than can be recharged is being used, or if more than was originally permitted is taken. During drought, the second condition — pumping beyond the recharge rate — becomes the key enforcement trigger. The state actively monitors aquifer levels through its observation well network and can act on permits that are contributing to aquifer depletion.

Water Right Type	Priority During Shortage	Notes
Domestic use (incl. stock watering within exemption)	Highest — takes precedence over all permits	No permit required; protected by statute
Senior permit holder (older priority date)	First call on available water among permit holders	Priority date set at application filing
Junior permit holder (newer priority date)	Last to receive water; first to be curtailed	May receive nothing during severe shortage
Unpermitted commercial/confinement use	No legal protection	No right to water against any permit holder

This information is used to determine whether water is available to meet existing and proposed water uses and to manage water resources during drought conditions. The DANR Water Rights Program publishes current stream gauge and aquifer data, and producers with permitted rights should monitor those reports during dry years. Acting early — applying for temporary permits, adjusting livestock numbers, or hauling water — is far less costly than losing animals to a water shortage you did not anticipate.

Temporary permits are another tool available during drought. Temporary permits may be granted to use water from either public or privately owned sources of water. Approval of a temporary permit does not grant trespass rights to access the water. If you need to access a neighbor’s pond or an alternative source during an emergency, a temporary permit from DANR provides legal authorization — but you still need the landowner’s permission to cross private property.

For additional resources on South Dakota animal and agricultural law, explore our articles on roadkill laws in South Dakota, rooster crowing laws in South Dakota, and exotic pets that are legal in South Dakota. You can also reach the SDSU Extension Water Rights in a Time of Drought resource for producer-focused drought planning guidance, and review the official South Dakota Water Rights Laws and Rules Summary from DANR for the full statutory framework.