Reservoir · Washington · United States · USGS NWIS
ALDER RESERVOIR AT ALDER, WA
Current fill: N/A
Capacity
264.58 hm³
Volume stored
N/A
Coordinates
46.802°N, 122.311°W
Station not currently reporting
The most recent storage reading from this gauge is from 2026-02-01, more than 45 days ago, so the current fill is shown as N/A. The history below reflects that older reading.
Current fill
N/Avs 7 days ago
N/Avs 1 year ago
N/A7-day trend
N/AData source: USGS National Water Information System (NWIS) — daily reservoir storage volume. Capacity is the design (normal full-pool) capacity from the US National Inventory of Dams (NID); fill % = current volume ÷ design capacity.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 46.802, -122.311 · Open in Google Maps
About ALDER RESERVOIR AT ALDER, WA
It is operated by USGS primarily for multiple purposes. It lies within the Washington basin at 46.802°N, 122.311°W.
Key facts
- Total capacity
- 265 hm³
- Primary use
- Multipurpose
- River basin
- Washington
- Operator
- USGS
- Coordinates
- 46.802°N, 122.311°W
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 1 Feb 2026 | 74.5% | 197 |
| 31 Jan 2026 | 74.5% | 197 |
| 30 Jan 2026 | 74.8% | 198 |
| 29 Jan 2026 | 75.1% | 199 |
| 28 Jan 2026 | 75.5% | 200 |
| 27 Jan 2026 | 76.1% | 201 |
| 26 Jan 2026 | 76.8% | 203 |
| 25 Jan 2026 | 77.5% | 205 |
| 24 Jan 2026 | 78.1% | 207 |
| 23 Jan 2026 | 78.7% | 208 |
| 22 Jan 2026 | 79.3% | 210 |
| 21 Jan 2026 | 79.9% | 211 |
Frequently asked questions
How much water can ALDER RESERVOIR AT ALDER, WA hold?
ALDER RESERVOIR AT ALDER, WA has a total capacity of 265 hm³.
Where is ALDER RESERVOIR AT ALDER, WA reservoir located?
ALDER RESERVOIR AT ALDER, WA is located in Washington, United States, within the Washington basin (coordinates 46.802°N, 122.311°W).
What is ALDER RESERVOIR AT ALDER, WA used for?
ALDER RESERVOIR AT ALDER, WA is used primarily for multiple purposes, and is managed by USGS.