Data Coverage
Waderly pulls real-time flow, weather, and fishing-condition data from public sources and shows you what's happening on the water before you go. This page lists exactly what's available, and where.
Available everywhere (all 50 states)
These data sources are national, so they show up for any gauge or location you search — no state restrictions.
- USGS stream gauges18,456 indexed gauge pages with real-time flow, gauge height, and water temperature.
- NWS weather forecast & alertsHourly and daily forecasts plus active National Weather Service alerts.
- NOAA river flood forecastsAction and flood stage forecasts from the NOAA National Water Prediction Service.
- NOAA tidesTide predictions and current stage for coastal waters.
- Public lands (PAD-US)Public land boundaries for legal access context around the water.
- EPA water-quality advisoriesActive EPA advisories layered onto the map.
- Solunar feeding windowsFeeding-window times computed from sun and moon position — zero API calls.
State-by-state layers
These overlays depend on a state agency (or a small group of them) publishing the underlying data, so coverage grows one state at a time.
Wild trout streams
State-designated wild trout waters, shown as a map overlay.
Trout stocking schedules
Scheduled and recent hatchery stocking events by water.
Special fishing regulations
Special-regulation water boundaries and the rules that apply.
Official access points
Verified, agency-sourced boat launches and fishing access points.
PA has official state access-point data; everywhere else Waderly shows a baseline from federal boating-access and OpenStreetMap data.
State gauge pages
Every state below has its own hub page linking to all of its indexed USGS gauges.
Featured states
All states
- Alabama238 indexed gauges
- Alaska194 indexed gauges
- Arizona350 indexed gauges
- Arkansas282 indexed gauges
- California813 indexed gauges
- Connecticut120 indexed gauges
- Delaware77 indexed gauges
- District of Columbia10 indexed gauges
- Florida996 indexed gauges
- Georgia451 indexed gauges
- Hawaii209 indexed gauges
- Idaho461 indexed gauges
- Illinois358 indexed gauges
- Indiana394 indexed gauges
- Iowa254 indexed gauges
- Kansas296 indexed gauges
- Kentucky296 indexed gauges
- Louisiana381 indexed gauges
- Maine104 indexed gauges
- Maryland248 indexed gauges
- Massachusetts234 indexed gauges
- Michigan354 indexed gauges
- Minnesota275 indexed gauges
- Mississippi229 indexed gauges
- Missouri330 indexed gauges
- Nebraska228 indexed gauges
- Nevada316 indexed gauges
- New Hampshire75 indexed gauges
- New Mexico382 indexed gauges
- North Dakota188 indexed gauges
- Ohio460 indexed gauges
- Oklahoma264 indexed gauges
- Oregon700 indexed gauges
- Puerto Rico210 indexed gauges
- Rhode Island57 indexed gauges
- South Carolina409 indexed gauges
- South Dakota227 indexed gauges
- Tennessee281 indexed gauges
- Texas1,089 indexed gauges
- Utah350 indexed gauges
- Vermont80 indexed gauges
- Virginia409 indexed gauges
- Washington600 indexed gauges
- West Virginia212 indexed gauges
- Wisconsin607 indexed gauges
- Wyoming231 indexed gauges