Daily river and stream water temperature surfaces, conterminous United States (2026-07-25)

CF-1.10 NetCDF grids of daily median river/stream water temperature and 1-sigma uncertainty, ML-interpolated (LightGBM quantile regression + residual kriging) from a multi-network in-situ observation catalogue with QARTOD-style quality control and NHDPlus COMID reach linkage. watertemp_ml_surface_20260724.nc: Daily ML-interpolated river and stream water temperature surface, Pacific Northwest, 2026-07-24 watertemp_gradient_field_20260725.nc: Daily station-interpolated water temperature gradient field, the conterminous United States (CONUS), 2026-07-25 Produced by watertemperatureforecast.com. Version 2: coverage extended from the Pacific Northwest to the full conterminous United States (4,062 training stations, 11.85M station-days; conformalized quantile regression calibration, 90% interval empirical coverage 0.90).