Somach Simmons and Dunn, Attorneys at Law Somach Simmons & Dunn | Attorneys at Law

Areas

Education

  • George Washington University Law School (J.D., 2011)
  • University of Arizona (B.A., 2008)

Clerkship

  • Hon. Laura D. Millman, U.S. Court of Federal Claims, Office of Special Masters (2011-2012)

Selected Admissions

  • California
  • United States Supreme Court
  • United States District Court for the Eastern District of California
  • United States District Court for the Northern District of California
  • United States Court of Appeals for the Ninth Circuit
  • United States Court of Federal Claims

Brittany K. Johnson
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LinkedIn Bio

Respected for her leadership and resourceful lawyering, Brittany Johnson blends creativity with laser-focused research to deliver value for her water quality and water resources clients inside and outside the courtroom. Her practice focuses on helping water users and wastewater dischargers understand and comply with regulations affecting operations and facilities.

In the water quality arena, Brittany advises publicly owned wastewater treatment plants and private companies on compliance with waste discharge permits and avoidance of permit violations. Brittany helps facilities with permit renewal and negotiation to ensure sound and agreeable permit terms. She comfortably collaborates among key stakeholders and senior leadership at regional water quality control boards, cities, municipalities, and other agencies to ensure her clients operate efficiently and effectively for their customers. When lawsuits or regulatory enforcement threaten those services, Brittany seamlessly transitions to strategist and problem-solver in defending enforcement actions.

Brittany also represents water users on water rights matters and in litigation arising from the management and implementation of their water rights. This work includes years of litigation on Endangered Species Act (ESA) cases challenging consultations on historic water contracts held by senior water right holders in the Sacramento Valley, and ESA cases challenging the complex consultations for operations of the Central Valley Project and the Klamath Project.

Known for her experience with interstate water matters, Brittany is an integral member of the litigation team for the State of Texas in the original jurisdiction action before the United States Supreme Court, Texas v. New Mexico, regarding the interpretation and enforcement of the Rio Grande Compact. She has worked on the case since the filing of the complaint in 2013, managing the briefing efforts to the Special Master and the Court to defeat New Mexico’s motion to dismiss, and working with the team on all aspects of discovery.

Brittany also advises clients on the Colorado River, working with Section 5 water contractors to navigate the Law of the River and providing strategic and legal advice on water transfers and other projects under the complex set of authorities. On a different aspect of Colorado River operations, Brittany represented the Arizona Power Authority and assisted the agency in developing its historic allocation of Hoover power within Arizona and negotiating its 50-year contract with federal agencies for its Hoover power allocation.

Prior to practicing natural resources law and litigation, Brittany served as a judicial law clerk to the Honorable Laura D. Millman at the U.S. Court of Federal Claims, Office of Special Masters, where she had the unique experience of working on Vaccine Act claims.

A native of Arizona, Brittany spends her time outside with her husband chasing their young daughters, whether on the walking trails along the American River Parkway or in the backyard with their pack of three dogs. Brittany enjoys shopping at local nurseries in Sacramento to find plants and flowers to add color to her home and garden, experimental dining nights with friends, and drinking Amador County wine on patios and playdates. Brittany is an everyday skier with plans to master the black diamonds and keep up with her Boulder colleagues one day.

Representative Matters

Water Resources

Assist in representation of State of Texas in Original Action No. 141 before United States Supreme Court regarding interpretation and enforcement of the Rio Grande Compact, including successfully defending the State of New Mexico’s motion to dismiss Texas’s Complaint.

Represent numerous water right permit and license holders, including irrigation districts, Central Valley Project contractors, and their representative associations, in Northern California Water Association v. State Water Resources Control Board, the long-running litigation challenging the State Water Resources Control Board’s water right fees scheme.

Represent irrigation district and growers in federal litigation challenging the management of historical agricultural lands in national wildlife refuges in the Klamath Reclamation Project.

Advise Colorado River water contractors on Colorado River management issues, including planning actions under the 2007 Guidelines, Arizona v. California Consolidated Decree, and other Law of the River authorities.

Endangered Species Act

Represent Glenn-Colusa Irrigation District and other Sacramento River Settlement Contractors in defense of federal district court lawsuit brought by environmental organizations challenging long-term water rights settlement contract renewals under the federal ESA.

Represent Glenn-Colusa Irrigation District and other Sacramento River Settlement Contractors in federal district court lawsuits challenging the Section 7 consultations for the long-term operations of the Central Valley Project.

Represent Klamath water users in federal district court lawsuits challenging the Section 7 consultations on Klamath Project operations and the interpretation of Section 7 of the ESA as it applies to Klamath Project operations.

Represent county watershed protection district in federal district court lawsuit alleging violations of Section 9 of the ESA in operation of federal flood control project.

Water Quality

Advise publicly-owned treatment works (POTWs) in evaluating, negotiating, and obtaining National Pollutant Discharge Elimination System (NPDES) permits issued by regional water quality control boards, including enrollment under general NPDES permits or waste discharge requirements.

Represent POTWs in litigation of NPDES permit requirements.

Advise regional clean water association on regulatory advocacy efforts to state and regional water quality control boards.

Advise municipalities in development of stormwater management plan and compliance with municipal separate storm sewer system (MS4) permitting.

Represent sewer districts in enforcement action for penalties for sanitary sewer overflows.

Represent public and private defendants in Clean Water Act citizen suit actions.

Advise municipality in restructuring and developing municipal code ordinances for pretreatment and sewer management programs.

Provide regulatory advice and develop comments for POTWs and regional clean water association in state water quality control planning processes, including proposed requirements for sanitary sewer systems, Bay-Delta water quality control plans, and other state water quality policies.

Provide ongoing regulatory and legal advice to POTWs.

Power

Advise state power authority in 50-year allocation of Hoover power within the state.

Advise state power authority and negotiate 50-year contract with Western Area Power Administration.

Advise electric cooperative on regulatory compliance and property matters.

Advise cities in evaluating development of hydropower projects and FERC licensing process.

Selected Reported Cases

  • District court litigation challenging the biological opinions for long-term operations of the Central Valley Project on behalf of intervenor water contractors, including reported cases at:
    • Coast Fedn. of Fishermen’s Ass’ns v. Raimondo, No. 1:20-cv-00431, 2024 U.S. Dist. LEXIS 57130 (E.D. Cal. Mar. 28, 2024)
    • Coast Fedn. of Fishermen’s Ass’ns v. Raimondo, No. 1:20-cv-00431, 2023 U.S. Dist. LEXIS 44155 (E.D. Cal. Feb. 24, 2023)
    • Coast Fedn. of Fishermen’s Ass’ns v. Raimondo, No. 1:20-cv-00431, 2022 U.S. Dist. LEXIS 44155 (E.D. Cal. Mar. 11, 2022)
    • Coast Fedn. of Fishermen’s Ass’ns v. Ross, 468 F. Supp. 3d 1266 (E.D. Cal. 2020)
  • Litigation challenging the renewal of the Sacramento River Settlement Contracts under the ESA on behalf of joined defendants, including reported cases at:
    • Nat. Res. Def. Council v. Haaland, 102 F.4th 1045 (9th Cir. 2024)
    • Nat. Res. Def. Council v. Bernhardt, No. 1:05-cv-01207, 2019 U.S. Dist. LEXIS 30649 (E.D. Cal. Feb. 19, 2019)
    • Nat. Res. Def. Council v. Zinke, 347 F. Supp. 3d 465 (E.D. Cal. 2018)
    • Nat. Res. Def. Council v. Norton, 236 F. Supp. 3d 1198 (E.D. Cal. 2017)
  • District court litigation challenging the Klamath Project operations under temporary and interim operations plan on behalf of intervenor water users, including reported cases at:
    • Klamath Tribes v. U.S. Bureau of Reclamation, No. 1:22-cv-00690, 2024 U.S. Dist. LEXIS 22431 (D. Or. Feb. 7, 2024)
    • Klamath Tribes v. U.S. Bureau of Reclamation, No. 1:21-cv-00556, 2024 U.S. Dist. LEXIS 22433 (D. Or. Feb. 7, 2024)
    • Klamath Tribes v. U.S. Bureau of Reclamation, No. 1:22-cv-00690, 2023 U.S. Dist. LEXIS 198398 (D. Or. Sept. 11, 2023)
    • Klamath Tribes v. U.S. Bureau of Reclamation, No. 1:21-cv-00556, 2023 U.S. Dist. LEXIS 198400 (D. Or. Sept. 11, 2023)
    • Klamath Tribes v. U.S. Bureau of Reclamation, 537 F. Supp. 3d 1183 (D. Or. 2021)
  • Tulelake Irrigation Dist. v. U.S. Fish & Wildlife Serv., 40 F.4th 930 (9th Cir. 2022)
  • Yurok Tribe v. U.S. Bureau of Reclamation, 654 F. Supp. 3d 941 (N.D. Cal. 2023) (appeal filed)
  • Coastkeeper Alliance v. County of Sacramento, et al., No. 2:21-cv-01916-WBS-KJN (E.D. Cal. filed Oct. 14, 2021)
  • Ecological Rights Foundation v. U.S. Army Corps of Eng’rs, et al., No. 2:25-cv-04616 (C.D. Cal. filed May 21, 2025)

Insights and Activities

  • Author, Brittany K. Johnson & Mekha Pereira, Setting the Table: Where Are We in Colorado River Hydrology and Law of the River, 57 Ariz. St. L.J. 1371 (2026)
  • Co-presenter, “Setting the Table: Where Are We in Colorado River Hydrology and Law of the River?” ASU Law Journal Symposium, Law of the Colorado River: The View from the Lower Basin, November 2025
  • Presenter and author, “Adjudications As A Gold Standard or A Lead Balloon: Lessons from the Acquavella and Klamath Basin Adjudications as the Nooksack Adjudication Gets Started,” The Foundation for Natural Resources and Energy Law, 71st Annual Institute, July 2025
  • Moderator, “The Future of the New BiOps: Do They Survive or Does the Cycle Continue?” Mid‑Pacific Water Users Conference, Reno, NV, January 30, 2025
  • Panelist, “ESA: Is anything fixed? Fixable?” Mid-Pacific Water Users Conference, Reno, NV, January 25, 2024
  • Co-author, “Texas v. New Mexico & Colorado: An Update from Year Six in the Original Action,” The Water Report, April 2019
  • Presenter, “Water and Power at Hoover Dam – New 50-Year Contracts in Arizona, California, and Nevada,” Western Water Law Conference, San Diego, CA, February 8, 2017
  • Presenter, “Post-2017 Hoover Power Contracting: Managing Risk and Resolving Other Challenges with a 50-Year Contract,” APPA Legal & Regulatory Conference, Long Beach, CA, October 17, 2016
  • Presenter, “Managing Sacramento River Water Supplies for Agriculture and Multiple Beneficial Uses,” California Water Law & Policy Conference, San Francisco, CA, June 14, 2016
  • Presenter, “Post-2017 Hoover Power Contracting: Managing Risk and Resolving Other Challenges with a Fifty-Year Contract,” Western Conference of Public Service Commissioners, Lake Tahoe, NV, May 23, 2016
  • Membership Committee, 2020; and Regional Team Member, 2016-2022, Association of Women in Water, Energy, and Environment
  • Northern California Water Association, Norcal Water Leaders Program, Class of 2020
  • Attorneys Committee, California Association of Sanitation Agencies
  • Member, Sacramento County Bar Association, Environmental Law Section, 2013-present
  • Northern California Super Lawyers, Super Lawyers, 2025
  • Northern California Super Lawyers, Rising Stars, 2019-2022

Recent Articles

U.S. Supreme Court Holds that General Narrative Prohibitions in NPDES Permits Are Not Authorized Under the Clean Water Act

In a split decision in City and County of San Francisco, California v. Environmental Protection Agency, the United States Supreme Court held the Clean Water Act (CWA) does not authorize ... Read More

Ninth Circuit Rejects ESA Challenges to 2005 Renewal of Sacramento River Settlement Contracts and Delta-Mendota Canal Contracts

On May 23, 2024, the Ninth Circuit Court of Appeals issued a 68-page decision in NRDC, et al. v. Haaland, et al. (Case No. 21-15163), which affirmed the district court’s ... Read More

Biden Administration’s Final Endangered Species Act Regulations Set to Take Effect on May 6

On March 28, 2024, the U.S. Fish and Wildlife Service (FWS) and the National Marine Fisheries Service (NMFS) (collectively, the “Services”) finalized revisions to regulations that implement Section 4 and ... Read More

District Court Finds that the Endangered Species Act Preempts State Agency’s Order Enforcing State Water Law

On February 6, 2023, the District Court for the Northern District of California issued its order on pending motions for summary judgment in Yurok Tribe, et al. v. U.S. Bureau ... Read More

State Water Resources Control Board Adopts Resolution Approving State Wetland Definition and Dredge and Fill Procedures

On April 6, 2021, the State Water Resources Control Board (State Board) approved the application of the State Wetland Definition and Procedures for Discharges of Dredged or Fill Material to ... Read More

Education

  • George Washington University Law School (J.D., 2011)
  • University of Arizona (B.A., 2008)

Clerkship

  • Hon. Laura D. Millman, U.S. Court of Federal Claims, Office of Special Masters (2011-2012)

Selected Admissions

  • California
  • United States Supreme Court
  • United States District Court for the Eastern District of California
  • United States District Court for the Northern District of California
  • United States Court of Appeals for the Ninth Circuit
  • United States Court of Federal Claims