Google Alerts, but for ecosystems
Monitor any place on Earth for deforestation, wetland loss, and land-use changes. Free satellite-powered alerts — no hardware, no fieldwork.
Free tier: 3 watch zones, weekly scans. No credit card required.
How PatchWatch protects land
Powered by open satellite data from ESA Sentinel-2 and NASA Landsat.
Draw Your Watch Zone
Pick any spot on Earth. Draw a polygon, circle, or rectangle on the map — that's your watch zone.
Satellite Scans Automatically
We check Sentinel-2 and Landsat imagery on a schedule — weekly for free, daily for Pro.
Get Alerted on Changes
When deforestation, wetland loss, or land clearing is detected, you get an email with before/after imagery.
Community Watch Map
Opt in to show your zones on the public map. See what the global community is protecting.
Get started in minutes
Sign Up
Create a free account in seconds.
Draw a Zone
Pick a place you care about on the map.
We Monitor
Satellites scan your zone every week.
Get Alerts
Receive email alerts when changes are detected.
Simple pricing
Free for individuals. Pro for power users and organizations.
Free
$0
- Up to 3 watch zones (10 km each)
- Weekly satellite scans
- Email alerts with before/after imagery
- 6-month change history
- Public watch map (opt-in)
Pro
$9/mo
- Unlimited watch zones
- Daily satellite scans
- Custom alert rules
- 10-year historical analysis
- GeoJSON, KML, PDF exports
- API access
Start protecting the places you care about
Join a global community using satellite data to monitor and defend ecosystems.
Create Your First Watch Zone