Legis
Environment
AB 2787, Chapter 222, Statutes of 2026 · Monday 14 September 2026

Water, parks, and wildlife: omnibus bill

California recognizes qualifying Nevada invasive-species decals for boats on Lake Tahoe and Topaz Lake and changes groundwater-basin review schedules.

Nevada-registered boaters meeting specified conditions can avoid California sticker citations on the two interstate lakes. The law also narrows when boundary updates trigger groundwater-priority reassessments while requiring a statewide review at least every 10 years starting in 2035.

What the law does

  • Bars citations for operating a Nevada-registered vessel on Lake Tahoe or Topaz Lake without a California invasive-mussel sticker when Nevada has an aquatic invasive-species program and the vessel displays a current Nevada decal.
  • Requires the Department of Water Resources to reassess only groundwater basins whose boundaries change when it updates Bulletin 118 basin boundaries.
  • Requires the Department of Water Resources, by January 31, 2035, and at least every 10 years afterward, to review whether reprioritizing all groundwater basins is warranted.

Who it affects

  • Nevada-registered boat owners and operators using Lake Tahoe or Topaz Lake.
  • California boating enforcement and vessel-registration administrators.
  • Groundwater sustainability agencies and local agencies overseeing groundwater basins.

Context

The Lake Tahoe and Topaz Lake exception reflects their interstate location and Nevada's reciprocal treatment of California boaters.

Breakdown

Nevada Vessels at Tahoe and Topaz

The bill creates an exception to California’s invasive-mussel sticker citation rule for certain Nevada-registered vessels operating on Lake Tahoe or Topaz Lake. A vessel operator cannot be cited for lacking a California sticker if Nevada has an aquatic invasive species management program and the vessel displays a current Nevada-issued invasive species decal.

Key takeaways

  • The bill applies to vessels and recreational vessels operating on Lake Tahoe or Topaz Lake.
  • Nevada registration is required for the citation exception.
  • The vessel must display a current aquatic invasive species decal issued by Nevada.
  • The exception applies only while Nevada has an aquatic invasive species management program in effect.
  • Eligible operators cannot be cited under California’s rule requiring a valid state-issued invasive mussel infestation prevention sticker.

Groundwater Basin Priority Reviews

The bill narrows the required priority reassessment after a groundwater basin boundary update to the basins whose boundaries changed. It also requires the Department of Water Resources to review all groundwater basin priorities by January 1, 2035, and at least once every 10 years after that, to decide whether statewide reprioritization is needed.

Key takeaways

  • After updating groundwater basin boundaries, the department must reassess priority only for basins affected by the boundary changes.
  • The department must review whether all groundwater basins should be reprioritized by January 1, 2035.
  • The department must conduct this statewide reprioritization review at least every 10 years after 2035.
  • The review determines whether changing basin priorities is warranted, rather than automatically requiring reprioritization.

Lake Tahoe and Topaz Lake

The bill makes formal legislative findings that a special statute is necessary for Lake Tahoe and Topaz Lake. These findings support treating those areas through legislation tailored to their particular circumstances.

Key takeaways

  • The bill declares that special legislation is necessary for Lake Tahoe and Topaz Lake.
  • The bill’s change in this part is limited to making legislative findings and declarations.
  • The findings identify Lake Tahoe and Topaz Lake as places requiring a special statute.