Local: 701-444-2211
Toll Free: 888-783-8447

Watford City North Dakota based law firm with attorneys specializing in the areas of oil and gas, probate, real estate, collections, personal injury, corporation, domestic relations, estate planning, business law, wills and probate, trials and appeals and tribal law.

Attorney profiles

Dennis Edward Johnson, (Member)

Dennis Johnson and Ross Sundeen

  • Admitted to bar, 1980, North Dakota;
  • U.S. District Court, District of North Dakota;
  • U.S. Court of Appeals, 8th Circuit.
  • Education:
    • Watford City High School, 1974
    • University of North Dakota, B.A., summa cum laude, 1976
    • University of North Dakota, J.D., with distinction, 1980.
      • Order of the Coif. Senior Member
      • Moot Court
      • Recipient American Jurisprudence Award in Contracts
      • Staff Member, Student Editorial, North Dakota Law Review, 1979-1980
  • States Attorney, McKenzie County, North Dakota, 1982-2013
  • Past Associate Justice for Intertribal Court of Appeals
  • Registered Abstractor, 1985-.
  • Associations:
    • North Dakota Association for Justice
      • Past President
      • Current Member Board of Governors
      • State Delegate for American Association of Justice, former
    • North Dakota State Bar Association
      • Member Board of Governors, former
      • Ethics Committee, former
      • Judiciary Committee, present
      • Pattern Jury Instructions Committee, present
  • Awards:
    • 2015 - Nation’s Top One Percent – National Association of Distinguished Counsel
    • 2014 – Nationally Ranked Top 10 Attorney Award – National Academy of Personal Injury Attorneys
    • 2015 - selected to Top Lawyer in Global Directory of Who’s Who
    • 2015 Great Plains Super Lawyers
  • Practice Areas:
    • Personal Injury and Wrongful Death;
    • Oil and Gas Law;
    • Commercial law and litigation;
    • Products Liability;
    • Trusts and Estates;

Ross L. Sundeen, (Member)

  • Admitted to North Dakota bar, 1993;
  • U.S. District Court, District of North Dakota;
  • Tribal Court - Three Affiliated Tribes.
  • Education: 
    • Lakota High School
    • North Dakota State University (1990)
      • Major: Social Sciences w/ behavioral science emphasis
      • Congressional Intern - Hon. Byron L. Dorgan
    • University of North Dakota (J.D. 1993)
      • Member Phi Delta Phi
      • Central Legal Research
      • Moot Court
    • Associations:
      • American Bar Association
      • North Dakota Association for Justice
      • North Dakota State Bar Association
        • Young Lawyer Section Executive Committee, former
        • Fee Arbitration Committee, former
        • Inquiry West Committee, former
        • Disciplinary Board, current
        • SBAND Community Service Award
      • National Eagle Scout Association
  • Practice Areas:
    • Wills & Probate
    • Real Estate, including contract and lease review for pipeline easements, gravel and scoria mining agreements and general surface use agreements
    • Oil & Gas Matters including contract and lease review for surface and mineral estates, and title curatives
    • Personal Injury and Wrongful Death;
    • Business Association

Ariston Johnson (Associate)

Ari is a motorcycle and sports car enthusiast. He is an accomplished amateur musician. He also enjoys flying an antique 1941 Piper J-3 Cub airplane.

  • Education:
    • Watford City High School, 2000
    • University of North Dakota, B.S., summa cum laude with departmental honors, 2000
      • Major: Computer Science
      • Minor: Mathematics
      • Member of Honors Program
      • Officer of Association of Computing Machinery
    • College of William & Mary School of Law, J.D., 2007
      • Member of Federalist Society
      • Researcher for Supreme Iraqi Criminal Tribunal
      • Recipient of Courtroom 21 Basic Technology-Augmented Litigator certificate
    • Admissions:
      • Virginia, 2007
      • North Dakota, 2007
      • Minnesota, 2008
      • Montana, 2009
      • United States District Court for the District of Montana, 2015
      • United States District Court for the District of North Dakota, 2008
      • United States Court of Appeals for the Eighth Circuit, 2012
    • Practice areas:
      • Personal injury and wrongful death
      • Products liability
      • Oil and gas litigation
      • Corporate formation
      • Commercial litigation
      • Jury trials
      • Appeals
      • Probate
      • Estate planning
    • Reported cases:
      • Schmidt v. Gateway Community Fellowship, 2010 ND 69, 781 N.W.2d 200 (negligence and immunity issues)
      • Reiss v. Komatsu Am. Corp., 735 F.Supp.2d 1125 (D.N.D. 2010) (products liability)
      • Brigham Oil v. Lario Oil, 2011 ND 154, 801 N.W.2d 677 (oil and gas, probate)
      • Bornsen v. Pragotrade, LLC, 2011 ND 183, 804 N.W.2d 55 (products liability)
      • Wisness v. Nodak Mutual Ins. Co., 2011 ND 197, 806 N.W.2d 146 (insurance)
      • Gadeco v. Industrial Commission, 2012 ND 33, 812 N.W.2d 405 and 2013 ND 72, 830 N.W.2d 535 (oil and gas, administrative law)
      • Rickert v. Dakota Sanitation Plus, 2012 ND 37, 812 N.W.2d 413 (corporate governance)
      • Johnson v. N.D. Workforce Safety and Insurance, 2012 ND 27, 812 N.W.2d 467 (administrative law)
      • Waldock v. Amber Harvest Corp., 2012 ND 180, 820 N.W.2d 755 (oil and gas, property rights)
      • Dish Network Service v. Laducer, 725 F.3d 877 (8th Cir. 2013) (tribal jurisdiction)
      • In the Interest of S.R.B., 2013 ND 75, 830 N.W.2d 565 and 2013 ND 109, 832 N.W.2d 42 (mental health)
      • Wagner v. Baker Hughes Oilfield Operations, 2013 ND 219, 840 N.W.2d 81 (easements)
      • Dickson v. American Bankers Insurance Company, 739 F.3d 397 (8th Cir. 2014) (flood insurance)
      • Tank v. Citation Oil & Gas Corp., 2014 ND 123, 848 N.W.2d 691 (oil and gas)
      • Norby v. Kuykendall, 2015 ND 232, 869 N.W.2d 405 (riparian rights)
      • Fleck v. Missouri River Royalty Corporation, 2015 ND 287 (oil and gas)

Aaron J. Weber (Associate)

Aaron also worked as a wildland firefighter for four summers while in college. He received various certifications and was on one of the largest fires in New Mexico state history, the Las Conchas Fire. He recently joined the Alexander Volunteer Fire Department, and is pursuing certification as a structural firefighter.

  • Education:
    • Watford City High School, 2008
    • University of North Dakota, B.S., summa cum laude, 2012
      • Major: Unmanned Aircraft Systems
      • Received Certified Flight Instructor Certificate and Commercial Pilot Certificate
    • University of North Dakota, J.D., with distinction, 2015
      • Order of the Coif
      • Academic Success TA
      • Moot Court
      • Criminal Law Association
      • William J. Holland Foundation Law Scholarship – highest grade in Contract Law
      • Thormodsgard Law School Award – highest grade in Administrative Law
    • Admissions:
      • North Dakota, 2015
    • Associations:
      • North Dakota State Bar Association
      • North Dakota Association of Justice
      • Alexander Volunteer Fire Department
    • Practice areas:
      • Personal injury and wrongful death
      • Oil and gas
      • Business formation
      • Commercial litigation
      • Probate
      • Estate planning
      • Criminal
      • Evictions
      • Collections

Based in Watford City, in the heart of North Dakota's booming Bakken oil fields, Johnson & Sundeen provides quality legal expertise with common sense and small-town service.

Learn more about the firm's origins.

Johnson & Sundeen 
P.O. Box 1260
109 5th St SW
Watford City, ND 58854

Local: 701-444-2211
Toll Free: 888-783-8447

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