Precipitation, storm outlook and supply pageslive

Five pages on the NOAA and CDEC feeds ingested into ca_water on 2026-09-21. Every page reads the public JSON routes under /atlas/api/.

Water-year precipitation tracker

CDEC 8-, 5- and 6-station indices: cumulative water-year precipitation against the 1991-2020 normal, driest, wettest and last-year curves, the TAB PDF season figures and a percent-of-average gauge. Any water year from 1998.

Storm outlook strip

CNRFC six-day basin QPF by forecast group with days 1-3 freezing levels, and the DWR Feather basin 10-day QPF product.

Outlook ladder

CPC 6-10 day through seasonal precipitation outlook categories for the ten DWR hydrologic regions, with ENSO status, ONI and weekly Nino anomalies.

Supply picture

Bulletin 120 water-year forecasts against the WSI exceedance forecast and observed full natural flow, by valley and water year.

Snowpack drift monitor

DWR statewide snowpack summary against the estate's 12-station snow_swe roll-up, with drift flags.

Routes