The TCWC vigorously advocates for the natural world, but we are not a government or enforcement entity.  If you are concerned because you think someone might be doing harm to our environment, and you do not feel comfortable speaking directly to the person involved, please notify the appropriate government department charged with investigation and enforcement.


This agency has jurisdiction over all issues involving streams (sometimes even intermittent streams) – which means anything that exists or takes place between the uppermost streambanks.
STREAMBED INFO LINE  858 636 3160  leave a message, it will be forwarded to the appropriate person
TIP LINE  888 334 2258 to report a suspected violation of enivronmental regulations.
LACO Dept of Regional Planning (818)880-3799
LACO Dept of Environmental Health  (818)880-3409
LACO Dept of Building and Safety (818)880-4150
California Coastal Commission  (805)585-1800

If you have trouble figuring out who to you need to speak with, we recommend that you contact the County Supervisor’s office at (818) 880-9416. The Field Deputy assigned to Topanga Canyon can provide support and help direct your concerns to the appropriate entity.  Calls, and even follow-up conversations, can be done anonymously, if desired.