South Carolina boating under the influence law applies when alcohol, drugs, or both materially and appreciably impair a person’s ability to operate a moving motorized water device or sailboat. On Lakes Hartwell and Keowee, a BUI stop may begin with unsafe operation, speed near crowded areas, missing lights, equipment concerns, a collision, or failure to heave to when signaled by law enforcement. A BUI case can involve chemical testing, boating privilege suspension, fines, jail exposure, and Alcohol and Drug Safety Action Program requirements. If you were stopped near Clemson, Greenville, Pickens, Anderson, or Spartanburg, the details of the stop, observations, testing, and officer procedure matter.
350+ Reviews
5.0 Star Average
Boating Season Brings More Patrols on Lakes Hartwell and Keowee 
Warm weekends, holiday crowds, Clemson-area lake traffic, and long afternoons on the water bring more boats to Lakes Hartwell and Keowee. Anglers, wakeboarders, pontoon operators, and personal watercraft riders share the same channels. That mix can draw attention from South Carolina Department of Natural Resources officers, local law enforcement, and, in some areas, federal officers.
A BUI stop does not always begin because an officer saw someone drinking. Many stops begin with a boating safety concern. An officer may approach because a boat appears overloaded, lacks visible navigation lights after dark, moves too fast near a congested area, creates an unsafe wake, or fails to respond when signaled. Once contact begins, the encounter can shift toward a boating under the influence investigation if the officer claims to notice alcohol, drugs, poor coordination, unsafe decisions, or other signs of impairment.
The Bateman Law Firm serves clients from offices in Greenville, Clemson, and Spartanburg, and boating under the influence defense is one of the firm’s listed practice areas. The firm also offers a free consultation.
What South Carolina BUI Law Prohibits
South Carolina Code Section 50-21-112 makes it unlawful to operate a moving motorized water device or water device under sail while under the influence of alcohol, drugs, or a combination of substances when the person’s faculties to operate are materially and appreciably impaired. The statute also defines drugs broadly to include legal drugs, illegal drugs, combinations of drugs, and combinations of alcohol and drugs.
That means a BUI case is not limited to beer or liquor on a boat. The allegation may involve prescription medication, alcohol combined with medication, marijuana, another drug, or conditions an officer mistakes for impairment, such as fatigue, heat, dehydration, glare, or motion.
Common Triggers for a BUI Stop on Lake Hartwell
Lake Hartwell stretches across South Carolina and Georgia, with heavy use near Clemson, Anderson, Seneca, and surrounding Upstate communities. During boating season, a stop may be triggered by conduct that appears unsafe or out of place.
Common Lake Hartwell BUI stop triggers include:
Weaving or drifting in a channel
Operating too close to other boats, docks, swimmers, or anchored vessels
Speeding through crowded areas or near ramps
Failure to use required lights from sunset to sunrise
Sudden turns, poor docking, or near collisions
Ignoring a no-wake area or producing excessive wake
An expired registration decal or missing visible numbers
Open containers combined with erratic operation
A complaint from another boater or marina employee
Some of these facts prove little by themselves. A new boater may dock poorly. A crowded cove may make it hard to maneuver. Wind, wake, glare, or mechanical problems can explain movement that appears unusual from a distance. The legal question is whether the stop was lawful and the BUI allegation has reliable evidence.
"John Bateman is my absolute go to peer in the legal field when it comes to questions about DUI. . . . He has an innate ability to convey to clients what really matters in their cases. As a fellow attorney, I highly recommend John to anyone in the SC or NC areas who are looking for... legal representation when facing a DUI charge." "John is an excellent DUI attorney. He has received the same field sobriety test training as all police officers in the State, and also the same training as the people who are the instructors of the police officer training courses on field sobriety tests. He is very passionate about DUI's and I recommend him often to people who are facing serious charges in the upstate area." "Very knowledgeable and thorough in his preparation and representation of his clients. He cares for each of his clients and works extremely hard to achieve results. I highly recommend this lawyer.""He has an innate ability to convey to clients what really matters in their cases."
M. Brock
"An excellent DUI attorney. He has received the same field sobriety test training as all police officers in the State"
P. Hammond
"He cares for each of his clients and works extremely hard to achieve results."
C. Grubbs
Common Triggers for a BUI Stop on Lake Keowee
Lake Keowee is known for clear water, residential shorelines, high recreational traffic, and boating routes near Seneca, Clemson, and Pickens County. Patrols may focus on speed, distance from docks, nighttime boating, safety equipment, and operator behavior.
A Lake Keowee BUI stop may start after an officer claims to observe a boat operating without proper lights, unsafe speed near homes or docks, a personal watercraft cutting too close to another vessel, a boat drifting without control, a loud party boat that draws complaints, a near miss at a ramp, or a safety inspection that leads to alcohol-related observations.
South Carolina law requires operators and crew on state waters to heave to when signaled or hailed and to allow boarding by law enforcement officers or U.S. Coast Guard personnel. Operators, crew, and passengers are also required to cooperate. A delayed response to an officer’s signal can create its own legal issue and may also become part of a later BUI narrative.
What Officers Look for After the Stop
After a boating stop begins, an officer may look for evidence that supports impairment. On the water, these observations can be more complicated than they look in a report. Boats rock. Decks are wet. Sun glare affects vision. Heat can cause red eyes. Wind can make speech hard to hear. Many people are unsteady while stepping between boats even when sober.
An officer may note odor of alcohol, red or watery eyes, slurred speech, confusion, difficulty producing registration, poor balance, admissions to drinking, open containers near the operator, boating field sobriety tasks, or breath, blood, or urine test results.
These details deserve careful review. If passengers were drinking, the smell of alcohol may not show the operator was impaired. If testing happened on an uneven dock or boat deck, the conditions may have affected balance. If the officer watched from a distance, the report may not tell the whole story.
Refusing Field Sobriety Tests Choosing a DUI AttorneyRelated Videos
BUI Testing and the 0.08 Inference
South Carolina boating law includes chemical testing provisions. A person who operates a water device is considered to have given consent to breath, blood, or urine testing after an arrest for certain BUI offenses. The law states that if a breath test shows 0.08 percent or more by weight of alcohol in the blood, it may be inferred that the person was under the influence of alcohol. A result of 0.05 percent or less creates a conclusive presumption that the person was not under the influence of alcohol. Results above 0.05 but below 0.08 may be considered with other evidence.
A refusal can also carry consequences. South Carolina law says a person must be informed that refusal can result in suspension or denial of the privilege to operate a water device for 180 days. Refusal, resistance, obstruction, or opposition to testing may also be admissible in court. If testing is part of your case, the firm’s page on breath testing may be helpful: https://duigreenville.com/breathalyzer/
Potential Penalties After a South Carolina BUI Charge
A first-offense BUI under Section 50-21-112 is a misdemeanor punishable by a $200 fine or imprisonment for 48 hours to 30 days, with public service employment possible in place of the 48-hour minimum jail term. A second offense carries a fine from $2,000 to $5,000 and imprisonment from 48 hours to one year. A third offense carries a fine from $3,500 to $6,000 and imprisonment from 60 days to three years.
A conviction also affects boating privileges. South Carolina law provides for a prohibition from operating a water device for six months for a first conviction, one year for a second conviction, and two years for a third conviction. A person must also complete Alcohol and Drug Safety Action Program requirements before privileges are restored.
More serious allegations can arise if a boating under the influence incident causes property damage, injury, great bodily injury, or death. For more background on serious BUI consequences, you can review this related page: https://duigreenville.com/bui-and-federal-waterways-jurisdiction-and-laws/
How a Defense Lawyer Reviews a BUI Stop
A BUI defense begins with the details. The Bateman Law Firm can review whether the officer had a lawful basis for the stop, whether the safety inspection expanded properly into an impairment investigation, and whether the State can connect the alleged impairment to operation of the boat.
A defense review may include the location of the stop, lake conditions, lighting, wake, boating traffic, officer signals, video footage, witness statements, field sobriety conditions, chemical testing procedure, officer training, report accuracy, and whether another person was operating the vessel. If field sobriety tasks are part of your case, the firm’s field sobriety test resource may help you understand why testing conditions matter: https://duigreenville.com/field-sobriety-test/
What to Do After a BUI Stop on Hartwell or Keowee
After a BUI stop, do not assume the case is already decided. Reports can omit key details. A passenger may remember facts the officer did not include. Video may show calmer speech, better coordination, or a more reasonable response than the written report suggests.
Write down where the stop happened, the stated reason for the stop, how the boat was moving before contact, who was operating, what tests were requested, and whether breath, blood, or urine testing occurred. Save marina receipts, fuel receipts, photos, videos, GPS tracks, and witness contact information. If your case is connected to Clemson, Pickens County, Greenville County, Anderson County, or Spartanburg County, local court procedure and agency practices can affect what happens next. You can contact the firm here: https://duigreenville.com/contact/
Talk With The Bateman Law Firm About a South Carolina BUI Charge
The Bateman Law Firm helps people facing DUI and BUI accusations in Greenville, Clemson, Spartanburg, and the Upstate, with a defense-focused approach that looks closely at the stop, testing, officer procedure, and facts surrounding the lake encounter.
If you were stopped on Lake Hartwell, Lake Keowee, or another South Carolina waterway, contact The Bateman Law Firm for a free consultation. You can also learn more about related BUI defense topics here: https://duigreenville.com/spartanburg-boating-under-the-influence-lawyer/
This article is for informational purposes only and is not legal advice. Consult an attorney about your specific situation.