Sitka Landslide Risk

Report a landslide

How do I report a landslide?

Notice something is missing? Have a new observation? Report landslides to If possible, include the following information:

  • Location (GPS coordinates or a description)
  • Photographs
  • Information about the time of the event if known (a window of time is also helpful)
  • Impacts (if any infrastructure was affected, anyone was hurt, streams were obstructed etc.)

Where can I see existing landslides?

The US Forest Service upkeeps a landslide inventory of the Tongass National Forest. The landslide inventory is updated annually. The inventory is produced using field observations and satellite imagery. It includes all mass wasting features (not just debris flows), including talus slopes, snow avalanche fields, and snow avalanche chutes.

Instructions for viewing the landslide inventory on aerial imagery instead of greyscale

  • On the linked webpage, click on I want to use this in the bottom left corner
  • Click on Create a map, then Advanced Mapping
  • In the map page that opens, click on the Basemap icon in the upper left
  • Select a basemap such as Imagery

More resources

Oral histories

Explore stories of landslides

Landslide 101

Find out more about the science behind landslides

Areas at risk

Identify where you live relative to landslide susceptibility in Sitka

How to prepare for a landslide

Learn what to do before a landslide occurs

Published work

Access articles published by our research team and related to this work

Report a landslide

Share new observations of landslides to contribute to ongoing research