Water Watch Realtime River and Stream flow maps https://waterwatch.usgs.gov/

Geology resource for Lakes, Rivers, and other Water Resources https://geology.com/lakes-rivers-water

USCG Recreational Boating Stats https://www.uscgboating.org/library/accident-statistics/Recreational-Boating-Statistics-2016.pdf

ACA and USCG Paddle Sports Fatality Information http://c.ymcdn.com/sites/www.americancanoe.org/resource/resmgr/spp-documents/Paddlesports_Fatality_Statis.pdf