Level of the Lake

Jordanelle Reservoir

Elevation at Jordanelle Dam

6,117.41ft

feet above sea level

48.99 ft below full · down 1.57 ft this week

Drought territory
daily reading for Sep 28 · the agency posts once a day

Past 30 days

−6.55 ft

level change

Storage

183,896

acre-feet · 59% full

Water temp

52°F

Provo River near Charleston

Put Jordanelle’s level on your phone →

Drought watchJordanelle Reservoir 26.27 ft below its typical level for this date

Below normal for the date

26.27

ft (typical today: 6,143.68 ft)

Jordanelle deficit

127,083

acre-feet below full

Above 2022 drought low

15.40

ft (6,102.01 ft, 2022 drought)

How past droughts played out →

Jordanelle is easing down (−1.57 ft this week). Releases, evaporation and intake are taking out more than the rivers bring in (≈61 cfs). That puts it in the “Drought territory” range, 15.41 ft above the “Below the record” line.

Past 30 days

−6.55 ft over this window
6,120.006,125.00Aug 29Sep 13Sep 28↑ typical for these dates: 6,127.89–6,154.46 ft
Lake elevation, past 30 days, now 6,117.41 ft, down 6.55 ft over the window
DateElevation (ft)
Aug 296,123.96
Aug 306,123.78
Aug 316,123.56
Sep 16,123.36
Sep 26,123.14
Sep 36,122.91
Sep 46,122.68
Sep 56,122.45
Sep 66,122.22
Sep 76,121.99
Sep 86,121.76
Sep 96,121.54
Sep 106,121.31
Sep 116,121.08
Sep 126,120.85
Sep 136,120.61
Sep 146,120.34
Sep 156,120.11
Sep 166,119.90
Sep 176,119.70
Sep 186,119.60
Sep 196,119.37
Sep 206,119.17
Sep 216,118.98
Sep 226,118.75
Sep 236,118.52
Sep 246,118.33
Sep 256,118.12
Sep 266,117.89
Sep 276,117.66
Sep 286,117.41

Daily pool elevation · Bureau of Reclamation daily · provisional

Typical for these dates: the middle half of years since 1996 in the lake’s record, median dashed.

The lake in cross-section

Fuse-plug spillway 6…Historic high 6168.061997Full pool 6166.42022 drought 6102.0148.99 ft to full6,117.41 ft

Rivers into the lake

Rivers & rain →

Swipe sideways to follow the river to the lake →

61 cfs61 cfs284 cfsout the dam nowProvo61 cfsProvo River armProvo near Woodland59% fullJordanelle storagein 61 · out 284 cfsnet −223 cfs ≈ -2.49 in/day on the lakeProvo River below th…USGS gauge at River Roa…
SteadyReceding · high water draining downOn the rise · climbing right nowInbound wave · big rise upstreamFlooding · NWS, by river heightNo current readingRising or falling is judged from each gauge’s last 48 hours, scaled to its river. Dot speed follows the flow. NWS flood status comes from river height and outranks direction.

Streamflow at the USGS gauge, plus the current flow out through the dam (USGS). Labels are gauge readings in cfs. Line width isn’t to scale. The lake’s net is worked out from these gauges (flow in minus flow out), so it misses ungauged creeks, evaporation and withdrawals. Reclamation’s daily storage for the lake changed −545.88 af ≈ −3.08 in on Sep 28.

The rivers, gauge by gauge

61cfs combined

Gauged rivers only. Runoff below these gauges and ungauged arms aren’t counted. Streamflow: USGS (provisional). Flood status: NOAA/NWS, from river height at each gauge rather than flow.