Millions of anglers are on the water every day. We turn their observations into the world's largest dataset for fishery health, bridging the gap between recreation and rigorous science.
Data Trusted By Partners In
Government agencies are underfunded and understaffed. They can only survey less than 5% of waterways annually. Meanwhile, climate change and habitat loss are altering aquatic ecosystems faster than ever before.
We are losing species not because we don't care, but because by the time the official data comes in, it is often too late.
Anglers are the eyes and ears of the water. You notice when the hatch is late. You notice when the water levels are historically low. You notice when invasive species appear.
AnglerGap.org provides the secure infrastructure to aggregate this decentralized wisdom into actionable scientific data.
How we turn a cast into a contribution.
Use our app to snap a photo. AI automatically identifies the species. You confirm details like tackle used and water clarity.
We protect your spots. Exact GPS coordinates are fuzzed into a generic 10km grid for public view. Only verified biologists see raw data.
Data is aggregated to track population trends, migration timing, and disease outbreaks across regions.
Reports are sent to local conservancies to advocate for habitat restoration, dam removals, or pollution controls.
Democratizing access to environmental insights.
Total Biomass Index
+12.4% ↑ YOY
Water Temp (Avg)
62.4°F ↑ 1.2°
Contributors Online
1,842
The heavy metal accumulating in our waterfowl populations is traceable directly to lost tackle. Here are the tungsten alternatives we recommend.
AnglerGap volunteers spent the summer documenting flow rates and trout stress levels during the historic heatwave.
How proper handling increases survival rates by 40% after release. A guide to photographing your catch responsibly.
Absolutely not. This is our #1 priority. Exact GPS data is encrypted and only visible to you. For public research and maps, we "fuzz" the location to a large 10x10km grid square, ensuring no specific pools or banks are identifiable.
No. AnglerGap.org is a 501(c)(3) non-profit. Data is licensed under Creative Commons for academic research, conservation planning, and educational use only. We strictly prohibit commercial exploitation of our user data.
Our model is currently 94% accurate for North American freshwater species. However, every flagged entry is reviewed by community moderators or biologists to ensure data integrity before it enters the scientific record.