Reservoir · Arizona · United States · USGS NWIS
Roosevelt Lake
35.2% full
Capacity
2,012.47 hm³
Volume stored
708 hm³
Coordinates
33.672°N, 111.161°W
Last updated
2026-09-16
Current fill
35.2%vs 7 days ago
-0.3%losing
vs 1 year ago
-10.4%year-over-year
7-day trend
→stable
Data source: USGS National Water Information System (NWIS) — daily reservoir storage volume. Design capacity is unavailable for this site, so fill % is estimated against the 5-year maximum storage and may overstate fullness. Last reading: 2026-09-16.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 33.672, -111.161 · Open in Google Maps
About Roosevelt Lake
As of September 16, 2026, Roosevelt Lake is filled to 35.2% of its total capacity, holding roughly 708 hm³ of water out of a maximum 2,012 hm³. At this level the reservoir is low.
Over the most recent week on record the fill level has held broadly steady (-0.3 pts), and it is 10.4 points below its level on the same date a year earlier.
Across the readings we hold for Roosevelt Lake — 1142 data points between August 2, 2023 and September 16, 2026 — the level has ranged from a low of 35.1% (September 15, 2026) to a high of 96.7% (April 29, 2024). On average the reservoir is fullest around April and at its lowest around July.
It is operated by SRP primarily for multiple purposes. It lies within the Salt River basin at 33.672°N, 111.161°W.
Key facts
- Current fill level
- 35.2%
- Water stored
- 708 hm³
- Total capacity
- 2,012 hm³
- 7-day change
- ▼ 0.3 pts
- Year-on-year
- ▼ 10.4 pts
- Primary use
- Multipurpose
- River
- Salt River
- River basin
- Salt River
- Operator
- SRP
- Coordinates
- 33.672°N, 111.161°W
- Last updated
- September 16, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 16 Sep 2026 | 35.2% | 708 |
| 15 Sep 2026 | 35.1% | 706 |
| 14 Sep 2026 | 35.2% | 709 |
| 13 Sep 2026 | 35.2% | 709 |
| 12 Sep 2026 | 35.2% | 709 |
| 11 Sep 2026 | 35.4% | 713 |
| 10 Sep 2026 | 35.4% | 713 |
| 9 Sep 2026 | 35.5% | 715 |
| 8 Sep 2026 | 35.6% | 717 |
| 7 Sep 2026 | 35.6% | 716 |
| 6 Sep 2026 | 35.7% | 718 |
| 5 Sep 2026 | 35.8% | 720 |