Credits & Acknowledgements

xlokk.com stands on the work of public agencies, open-source developers, and generous photographers. We are grateful to all of them. This page records the sources and software that make the site possible.

Data Sources

Weather, marine, and water-level data displayed on xlokk is sourced from the National Oceanic and Atmospheric Administration (NOAA) and its programs:

• National Weather Service (NWS) —
• National Data Buoy Center (NDBC) —
• NOAA Tides and Currents / CO-OPS —
• NOAA Operational Forecast Systems (OFS) —

Data produced by these U.S. Government programs is generally in the public domain. xlokk.com is an independent service and is not affiliated with, endorsed by, or sponsored by NOAA, the NWS, or any government agency. Reference to these sources does not imply their endorsement of xlokk or of any information presented here.

Maps

Interactive maps are rendered with Leaflet using map tiles and data from OpenStreetMap. Map data © OpenStreetMap contributors, available under the Open Database License (ODbL).

Open-Source Software

• Leaflet —
• Chart.js — (MIT License).
• SunCalc — by Vladimir Agafonkin (open source).

We thank the maintainers and contributors of these projects.

Photography & Video

Photography and video used on xlokk are courtesy of contributors at Pexels, including Heather Kittle, and are used under the Pexels License. Our thanks to the photographers and videographers whose work helps bring the Great Lakes to the screen.

Corrections

If you believe something here is credited incorrectly or is missing an attribution it should have, please let us know at helm@xlokk.com and we will put it right.