Chatgpt or one of the ai programming apps can do that, but it's a data heavy task.
After a about a dozen prompts, it generates a color coded map of marine and river systems, with changes over time controlled by a slider.
This would generate the code needed, and then you'd need to save the file and run it on a machine, or host the code on the web.
Interesting project, looks like it could be created for free with some time and ai programming bots.
I got this, after getting an outline of the program:
Ultimately, the application could let you:
Drag the slider from 1970 → 2026 and watch opportunities change.
Click the Skagit, Cowlitz, Hoh, or any other river to see how regulations evolved.
Toggle Chinook, coho, steelhead, and other species independently.
Compare freshwater and Marine Area opportunities side by side.
View annotations explaining major changes such as ESA listings, hatchery policy shifts, and major regulation updates.
To make the history as accurate as possible, the project would need a curated dataset assembled from historical WDFW regulations and GIS layers. That data work is the largest part of the project.
If your goal is to create something that others can use, this could become a valuable public resource. I can continue helping with the software architecture, code, data model, and visualization design as the historical data are assembled.