Reservoir · Arizona · United States · USGS NWIS
Apache Lake
93.0% full
Capacity
302.37 hm³
Volume stored
281 hm³
Coordinates
33.591°N, 111.343°W
Last updated
2026-09-16
Current fill
93.0%vs 7 days ago
+1.0%gaining
vs 1 year ago
+0.5%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. 33.591, -111.343 · Open in Google Maps
About Apache Lake
As of September 16, 2026, Apache Lake is filled to 93.0% of its total capacity, holding roughly 281 hm³ of water out of a maximum 302 hm³. At this level the reservoir is high.
Over the most recent week on record the fill level has held broadly steady (+1.0 pts), and it sits close to where it was a year earlier.
Across the readings we hold for Apache Lake — 1142 data points between August 2, 2023 and September 16, 2026 — the level has ranged from a low of 89.7% (November 12, 2023) to a high of 96.1% (April 3, 2026). On average the reservoir is fullest around April and at its lowest around December.
It is operated by SRP primarily for multiple purposes. It lies within the Salt River basin at 33.591°N, 111.343°W.
Key facts
- Current fill level
- 93.0%
- Water stored
- 281 hm³
- Total capacity
- 302 hm³
- 7-day change
- ▲ 1.0 pts
- Year-on-year
- ▲ 0.5 pts
- Primary use
- Multipurpose
- River
- Salt River
- River basin
- Salt River
- Operator
- SRP
- Coordinates
- 33.591°N, 111.343°W
- Last updated
- September 16, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 16 Sep 2026 | 93.0% | 281 |
| 15 Sep 2026 | 92.1% | 278 |
| 14 Sep 2026 | 92.7% | 280 |
| 13 Sep 2026 | 91.7% | 277 |
| 12 Sep 2026 | 92.1% | 279 |
| 11 Sep 2026 | 91.8% | 278 |
| 10 Sep 2026 | 92.1% | 278 |
| 9 Sep 2026 | 92.0% | 278 |
| 8 Sep 2026 | 92.4% | 279 |
| 7 Sep 2026 | 92.5% | 280 |
| 6 Sep 2026 | 92.8% | 281 |
| 5 Sep 2026 | 92.6% | 280 |