Data Source Attribution

RiseCast is built on public and openly licensed data. Sources, licenses, and the credit we owe:

USGS (United States Geological Survey)

Streamflow, gauge height, and water temperature from the USGS Water Data APIs (api.waterdata.usgs.gov). Stream lines and names from the USGS 3D Hydrography Program (3DHP), and stream elevations, used to flag likely trout water, from the USGS 3D Elevation Program (3DEP). US government work, public domain. No attribution legally required; we credit "Data: USGS" on conditions views as good practice. USGS asks that data not be presented as officially endorsed.

Colorado Division of Water Resources (DWR)

Streamflow from Colorado DWR stream gages that USGS does not carry, through Colorado's Decision Support Systems (CDSS). Public state data. Credited as "Colorado DWR" on every gauge it supplies.

Colorado Parks and Wildlife (CPW)

Gold Medal Water and Quality Water designations, fishing regulations, closures, access points, and public access units in Colorado. Used with CPW's written permission, on the condition that CPW is credited as the source. Every place CPW data appears in the app credits "Colorado Parks and Wildlife". Official designations are shown exactly as CPW publishes them and are never produced by the RiseCast rating. Regulations and closures change; the official CPW source always governs.

US Forest Service and Bureau of Land Management

Recreation sites (for example trailheads, campgrounds, and boat launches) used as access points in Colorado. US government work, public domain. Each point is labeled "Source: US Forest Service" or "Source: Bureau of Land Management".

NOAA / National Weather Service

Forecasts and alerts from api.weather.gov. US government work, public domain. Our client sends the contact User-Agent the NWS API policy requests. Credited as "Forecast: NOAA/NWS".

Open-Meteo

Supplemental weather data. Licensed CC-BY 4.0, attribution required. Credit line used in the app and on the site: "Weather data by Open-Meteo.com" with a link to https://open-meteo.com.

OpenStreetMap

Base map data underlying our tiles, plus some access points (public-land parking, boat slipways, and bridge crossings). Licensed ODbL. Required credit, displayed on every map view and on every access point drawn from OSM: "(c) OpenStreetMap contributors" linking to https://www.openstreetmap.org/copyright. OSM-derived access points are stored separately from other sources because of ODbL share-alike. A bridge crossing is a place a road meets the water, not permission to fish there.

MapTiler

Tile hosting and map styles (free tier per SETUP.md). MapTiler terms require visible attribution alongside the OSM credit: "(c) MapTiler" linking to https://www.maptiler.com/copyright/. Both credits render in the map attribution control.

PAD-US (Protected Areas Database of the United States)

PAD-US 4.1 public land used to mark which stretches of stream cross open public land (highlighted green) or restricted public land (amber). USGS product, public domain. Credited as "Public lands: USGS PAD-US" where access data is shown. RiseCast highlights public stretches of stream; it does not shade public land areas on the map. In Colorado the streambed under private land is private, so a stretch without the highlight should be treated as private.

Fly shop reports

Third-party content summarized under the ingestion policy (scraping-policy.md). Every report card carries the shop name and a link to the original report.

Compliance checklist for any new data source

1. Confirm the license and whether attribution is required.
2. Add the source here with its credit line.
3. Wire the credit into the relevant UI surface.
4. If the source is a crawled site, it goes through the ingestion policy, never a one-off fetch.

OpenFreeMap and Photon (keyless fallbacks)

When no MapTiler key is configured, base map tiles come from OpenFreeMap (openfreemap.org, OSM data under ODbL) and town search from Photon by komoot (photon.komoot.io, OSM data under ODbL). Both credits render on the attribution screen alongside the OpenStreetMap credit.