Menu
Contact Us Search

Lake and Streambed Alteration Program

Fish Swimming
mountain stream
fish close up
Stream
Foothill yellow-legged frog
Desert wash
lake

CDFW is responsible for protecting and conserving fish and wildlife resources, and the habitats upon which they depend. The Lake and Streambed Alteration (LSA) Program reviews projects that would alter any river, stream, or lake and conditions projects to conserve existing fish and wildlife resources.

You must notify CDFW if you have a project that would do any of the following:

  • Divert or obstruct the natural flow of any river, stream, or lake
  • Change the bed, channel, or bank of any river, stream, or lake
  • Use material from any river, stream, or lake
  • Deposit or dispose of material into any river, stream, or lake

CDFW will review your notification and issue a Lake or Streambed Alteration Agreement when necessary to protect fish and wildlife resources.

Learn more about LSA Notification, LSA Agreements, and compliance with the California Environmental Quality Act (CEQA).


For project and site specific LSA questions, contact the link opens in new windowCDFW Region (PDF) where the project is located.

Email the LSA Program Sacramento



Habitat Conservation Planning Branch
1700 9th Street, 2nd Floor, Sacramento, CA 95811
Mailing: P.O. Box 944209, Sacramento, CA 94244-2090
(916) 653-4875