Reservoirs
Below normalLake Havasu water level
Live reservoir storage and water level in Colorado (Lower) basin, Arizona / California
Data through Sep 23, 2026 · source last checked Oct 1, 2026 · page revised Sep 24, 2026
Cite
- Storage
About this data
- Source
- US Bureau of Reclamation RISE; California reservoirs via CA DWR CDEC
- Series
- End-of-day reservoir storage
- Geography
- Lake Havasu water level
- Unit
- acre-feet
- Calculation
- Daily reading
- Last observation
- Sep 23, 2026
- Update frequency
- Daily
Now 513,317 af, 11% below the 5-yr median, 83% of capacity.
Lake Havasu storage stands at 513,317 af, down 3.1% since last month. The reservoir sits 11% below its 5-year median and at 83% of capacity. Year over year, storage has declined 13.6%.
| Period | Current | Prior | Change |
|---|---|---|---|
| Week over week | 513,317 af | 517,722 af | -0.9% |
| Month over month | 513,317 af | 529,789 af | -3.1% |
| Year over year | 513,317 af | 594,337 af | -13.6% |
| vs 5-yr median | 513,317 af | 576,579 af | -11.0% |
| Measure | Value |
|---|---|
| Latest reading, Sep 23, 2026 | 447.04 ft above sea level |
| Change from a week earlier | -0.24 ft |
| Change from a year earlier | -1.7 ft |
| 5-yr median for the date | 447.82 ft |
| Below full pool | 2.96 ft |
| Five-year low | 445.89 ft (Jan 20, 2025) |
| Five-year high | 449.49 ft (Nov 26, 2025) |
| Measure | Value | Source |
|---|---|---|
| Full pool elevation | 450 ft above sea level (maximum water surface elevation) | USBR |
| Maximum depth at the dam | 80 ft | USBR |
| Surface area at full pool | 20,390 acres | USACE NID |
| Total capacity | 619,400 acre-feet | USBR |
Previous weeks
Week of Sep 15, 2026
Lake Havasu storage sat at 515,637 af, 10% below the 5-year median and 83% of capacity. The reservoir shed 0.5% on the week and 4.6% on the month. Year over year, it has declined 10.3%.
Week of Sep 2, 2026
Lake Havasu storage fell to 518,187 af, down 2.8% on the week. The level sits 11% below the 5-year median. Storage is down 12.0% year over year.
Week of Aug 25, 2026
Lake Havasu storage dropped to 530,168 af, down 9.1% on the year. The reservoir is 9% below the 5-yr median and stands at 86% of capacity. Storage shed 1.5% week to week.
Week of Aug 19, 2026
Lake Havasu storage stands at 534,356 af, down 7.7% from a year ago. A weekly gain of 2.0% follows a 2.1% monthly drop. The level remains 9% below its 5-year median.
About Lake Havasu
Lake Havasu's water level is 447.04 feet above sea level as of Sep 23, 2026, 2.96 feet below full pool (450 feet), with 513,317 acre-feet in storage (83% of capacity). That is 0.24 feet lower than a week earlier and 1.7 feet lower than a year earlier.
Parker Dam impounds Lake Havasu on the lower Colorado, the forebay for two of the Southwest's largest diversions: Metropolitan Water District's Colorado River Aqueduct to coastal Southern California and the Central Arizona Project pumping toward Phoenix and Tucson. Roughly three-quarters of Parker Dam's height sits below the original riverbed, which is why it is often called the deepest dam in the world.
Total capacity is 619,400 af, over the past five years storage has ranged from 498,457 af to 605,080 af.
Lake Havasu is one of the 21 major reservoirs this site totals each day, and one of several it tracks in the Colorado (Lower) basin. For the combined picture, western reservoir levels carries the storage of all 21 on one chart, which is the number to watch when the question is about the West as a whole rather than about this project.
Those figures describe the reservoir at full pool, not today. The chart at the top of this page tracks storage in acre-feet and the elevation table tracks the water surface in feet, so read storage against total capacity for how full the reservoir is, and the elevation against the full pool elevation and maximum depth for the size of the water column behind the dam. The two do not move together one for one: a reservoir narrows as it deepens, so one holding half its capacity still stands more than half as deep.
Sources: full pool elevation and maximum depth from the Bureau of Reclamation; surface area from the Army Corps' National Inventory of Dams; total capacity from the Bureau of Reclamation.