Snowpack

Upper Colorado basin SWE (% of median)

Sierra Nevada pillows (CDEC) drive State Water Project supply; the Upper Colorado basin index and its headwater SNOTEL sites lead Lake Powell inflow by 6–9 months. Shaded bands are the p10–p90 normal over the full record.

Sierra Nevada — CDEC snow (SWE)

PhillipsAMERICAN RIVER

Grizzly RidgeFEATHER RIVER

Forni RidgeAMERICAN RIVER

Alpha (SMUD)AMERICAN RIVER

Kaiser PointSAN JOAQUIN RIVER

Graveyard MeadowSAN JOAQUIN RIVER

Upper Tyndall CreekKERN RIVER

Upper Colorado — NRCS SNOTEL (SWE)

Berthoud SummitCOLORADO HEADWATERS

Fremont PassCOLORADO HEADWATERS

Grizzly PeakCOLORADO HEADWATERS

Elkhart Park G.S.UPPER GREEN

Steel Creek ParkUPPER GREEN