Every flood and every drought since Jordanelle Dam closed. Jordanelle Reservoir has swung across 66 vertical feet — from a record low of 6102.01 ft to a record high of 6168.06 ft. Today’s 6134.98 ft is higher than 34% of all months on record.
Monthly mean (line) with monthly min–max band. Dashed teal line = full pool (6166.4 ft).
Record high
6168.06 ft
1997-06-23
Record low
6102.01 ft
2022-03-23
Fuse-plug spillway
6182 ft
never reached
Full pool
6166.4 ft
conservation pool
Daily record aggregated here to monthly min/mean/max. Pool elevation and storage from the Bureau of Reclamation (Upper Colorado hydrodata, site 964); streamflow from USGS; reference elevations and capacity from Reclamation/DOI Central Utah Project documents; ramp status from Utah State Parks. Historical daily values are agency-reviewed; recent values are provisional.