Ecstall Slide - 2022 - Hakai Airborne Coastal Observatory

On September 1st, 2022, Goran Exstrom detected a seismic event north of Kitimat which turned out to be an ice/rock avalanche on the Ecstall River. It slammed into a lake and created a downstream flood similar to the event at Elliot Creek (Bute Inlet). Hakai Institute worked with Marten Geertsma (BC Gov) to deploy the Airborne Coastal Observatory to collect lidar and imagery of the event in the Ecstall-Spokskuut Conservancy, a key region for Salmon.

Given that the event followed warm weather in August 2022 and then a precipitation event suggests that enhanced glacier melt may have helped trigger the event. Data from the ACO will help to understand these factors and other cascading effects of the hazard event (e.g., destruction of Salmon habitat).

The Airborne Coastal Observatory (ACO) is a collaborative program led by the Hakai Institute with partners the University of Northern British Columbia and Kisik Aerial Surveying. The program offers rapid and accurate aerial observations of coastal ecosystems, from Icefields to Oceans. A Kisik Aerial Piper Navajo aircraft is packed with an array of integrated Earth imaging sensors and technology to provide highly visual and highly accurate data. Hakai’s Airborne Coastal Observatory was developed to map and monitor icefields to oceans by using a combination of airborne Lidar (Light Detection and Ranging), high-resolution imagery, and hyperspectral imagery. Combined, the ACO sensors provide data to quantify changes in seasonal snow cover and glacier mass loss. The ACO is an aerial remote sensing platform used by the Hakai Institute to survey landscapes in detail. A Piper Navajo aircraft carries an array of integrated airborne mapping sensors installed to collect data in concert. The aircraft is operated and maintained by Kisik Aerial Surveys (Delta, BC). For more information on post processing, data quality assurance, software used, and summary of results please contact

Access and Use

Licence: Creative Commons Attribution 4.0
Limitations: Appropriate credit must be given to Hakai Institute and the authors of the dataset.

Data and Resources



Dataset extent

Map data © OpenStreetMap contributors

Metadata Reference Date(s) January 17, 2023 (Revision)
January 18, 2023 (Publication)
Data Reference Date(s) September 11, 2022 (Creation)
November 30, 2022 (Publication)
Frequency of Update As Needed

Responsible Party 1
Hakai Institute ROR logo
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Field Value
Ocean Variables Other
Scope Dataset
Status Completed
Topic Category oceans
Maintenance Note Generated from
Spatial Extent { "coordinates": [ [ [ -129.8, 53.71 ], [ -129.4, 53.71 ], [ -129.4, 54.01 ], [ -129.8, 54.01 ], [ -129.8, 53.71 ] ] ], "type": "Polygon" }
North Bounding Latitude 54.01
South Bounding Latitude 53.71
East Bounding Longitude -129.4
West Bounding Longitude -129.8
Temporal Extent
Vertical Extent
Default Locale English