Last reading · NGVD29
Lake Powell Water Level Today
The last reading for Lake Powell, the Colorado River reservoir behind Glen Canyon Dam, was 3,520.02 ft (NGVD29) on Oct 16, 2026. That's 179.98 ft below its full pool of 3,700.00 ft. Lake Powell is 25.29 ft lower than on the same date last year.
−179.98 ft
Below full pool
3,520.02 ft
Oct 16, 2026 MST
- 7-day change+1.05 ftOct 9, 2026
- 30-day change+3.35 ftSep 16, 2026
- Vs last year−25.29 ftOct 16, 2025
- ReadingOct 16, 20263,520.02 ft
Is Lake Powell Full?
No. Lake Powell is 179.98 ft below its full pool of 3,700.00 ft. On Oct 16, 2026, the elevation was 3,520.02 ft (NGVD29 datum). Over the 30 days ending Oct 16, 2026, Lake Powell has risen 3.35 ft. The mean for this calendar day across 11 earlier years (2015–2025) is 3,583.09 ft, and the latest reading is 63.07 ft below it.
Lake Powell Level vs Last Year & Historical Average
Comparisons for Lake Powell use the same NGVD29 series as the chart. The series begins Oct 1, 2015 and has 4034 daily values. Lake Powell is 25.29 ft lower than on the same date last year. In that window, the lowest daily level was 3,516.62 ft on Sep 15, 2026, and the highest was 3,635.80 ft on Jul 11, 2017.
| Mark | Date | Elevation | Vs latest |
|---|---|---|---|
| Latest reading | Oct 16, 2026 | 3,520.02 ft | — |
| 7 days earlier | Oct 9, 2026 | 3,518.97 ft | +1.05 ft |
| 30 days earlier | Sep 16, 2026 | 3,516.67 ft | +3.35 ft |
| 1 year earlier | Oct 16, 2025 | 3,545.31 ft | −25.29 ft |
| Same-day mean (11 years) | — | 3,583.09 ft | −63.07 ft |
Lake Powell Water Level Chart
Daily elevation Full pool Latest
Full pool: 3,700.00 ft (above the chart's range).
| Start | End | Low | High | Days |
|---|---|---|---|---|
| Sep 17, 2026 | Oct 16, 2026 | 3,516.83 ft | 3,520.02 ft | 30 |
Full pool: 3,700.00 ft (above the chart's range).
| Start | End | Low | High | Days |
|---|---|---|---|---|
| Oct 16, 2025 | Oct 16, 2026 | 3,516.62 ft | 3,545.65 ft | 366 |
Full pool: 3,700.00 ft (above the chart's range).
| Start | End | Low | High | Days |
|---|---|---|---|---|
| Oct 18, 2016 | Oct 16, 2026 | 3,516.62 ft | 3,635.80 ft | 3651 |
Monthly High, Low, and Average
Each row is the high, low, and average of the daily Lake Powell elevations in that month (Oct 2025 through Oct 2026). The lowest monthly average in this table is Sep 2026 at 3,517.41 ft (30 days). The highest monthly average is Oct 2025 at 3,545.02 ft.
| Month | High | Low | Average |
|---|---|---|---|
| Oct 2025 | 3,545.65 | 3,544.03 | 3,545.02 |
| Nov 2025 | 3,545.43 | 3,543.26 | 3,544.42 |
| Dec 2025 | 3,543.16 | 3,540.31 | 3,541.68 |
| Jan 2026 | 3,540.17 | 3,535.02 | 3,537.68 |
| Feb 2026 | 3,534.86 | 3,531.00 | 3,532.93 |
| Mar 2026 | 3,530.89 | 3,527.99 | 3,529.43 |
| Apr 2026 | 3,528.11 | 3,526.29 | 3,527.38 |
| May 2026 | 3,527.96 | 3,525.95 | 3,526.97 |
| Jun 2026 | 3,527.97 | 3,525.91 | 3,527.36 |
| Jul 2026 | 3,525.76 | 3,522.27 | 3,523.93 |
| Aug 2026 | 3,522.16 | 3,517.87 | 3,519.88 |
| Sep 2026 | 3,518.08 | 3,516.62 | 3,517.41 |
| Oct 2026 | 3,520.02 | 3,518.34 | 3,519.05 |
About This Data
| Agency | U.S. Bureau of Reclamation |
|---|---|
| Station | Lake Powell Glen Canyon Dam and Powerplant (508) |
| Parameter | RISE item 508, lake/reservoir elevation, daily instant, feet |
| Datum | NGVD29 |
| Formula | U.S. Bureau of Reclamation project datum. USGS parameter 62614 (NGVD29) is the check series; 62615 (NAVD88) is not used. |
| Full pool | Full pool: 3,700.00 ft |
| Full-pool source | https://www.usbr.gov/projects/index.php?id=144 |
| Latest reading | Oct 16, 2026 MST (2026-10-16 07:00 UTC) |
| Series file | data/raw/lake-powell/rise-508-20261017T132852Z.csv, data/raw/lake-powell/usgs-check-62614-20261017T132852Z.json, data/raw/lake-powell/full-pool-20261017T132852Z.html |
| Note | Provisional data, subject to revision. |
| Cross-check | USGS 09379900 parameter 62614 averaged 3519.68 ft on 2026-10-16 (96 values) versus the primary series 3520.02 ft (difference 0.34 ft). Raw file data/raw/lake-powell/usgs-check-62614-20261017T132852Z.json. |
How We Calculate These Numbers
Daily history for Lake Powell uses the Bureau of Reclamation's daily elevation values from RISE. For Lake Powell, full pool is 3,700.00 ft. The difference on Oct 16, 2026 is −179.98 ft (3,520.02 minus 3,700.00). The same-day mean at Lake Powell uses 11 readings on this calendar day from 2015 through 2025 and equals 3,583.09 ft. All of these figures come from station 508. Percent full is shown only when an agency published it; it is never estimated by dividing elevation by a pool elevation.
FAQ
Is Lake Powell full?
No. On Oct 16, 2026, Lake Powell was 3,520.02 ft, 179.98 ft below its full pool of 3,700.00 ft.
What is full pool at Lake Powell?
Full pool at Lake Powell is 3,700.00 ft (NGVD29). On Oct 16, 2026, the lake was 179.98 ft below it. The source is linked under About This Data.
Is Lake Powell higher than last year?
No, Lake Powell is lower than last year. On Oct 16, 2025 it was 3,545.31 ft; on Oct 16, 2026 it is 3,520.02 ft (−25.29 ft).
Where does the Lake Powell data come from?
U.S. Bureau of Reclamation station 508, RISE item 508, lake/reservoir elevation, daily instant, feet. The datum is NGVD29. Provisional data are subject to revision.
Nearby Lakes
| Lake | Level | Reading | Distance |
|---|---|---|---|
| Lake Mead | 1,037.53 ft | Oct 15, 2026 | 204 mi |
| Elephant Butte Reservoir | 4,296.00 ft | Oct 16, 2026 | 353 mi |
| Folsom Lake | 402.89 ft | Oct 16, 2026 | 550 mi |
| Shasta Lake | 977.24 ft | Oct 16, 2026 | 649 mi |