Reservoir · Oregon · United States · BOR RISE
Haystack Reservoir and Dam (HAY)
80.1% full
Capacity
6.95 hm³
Volume stored
6 hm³
Coordinates
44.499°N, 121.154°W
Last updated
2026-07-28
Current fill
80.1%vs 7 days ago
+1.4%gaining
vs 1 year ago
+11.3%year-over-year
7-day trend
→stable
Data source: BOR RISE — US Bureau of Reclamation — 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. Last reading: 2026-07-28.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 44.499, -121.154 · Open in Google Maps
About Haystack Reservoir and Dam (HAY)
As of July 28, 2026, Haystack Reservoir and Dam (HAY) is filled to 80.1% of its total capacity, holding roughly 6 hm³ of water out of a maximum 7 hm³. At this level the reservoir is high.
Over the most recent week on record the fill level has held broadly steady (+1.4 pts), and it is 11.3 points above its level on the same date a year earlier.
Across the readings we hold for Haystack Reservoir and Dam (HAY) — 2190 data points between July 31, 2021 and July 28, 2026 — the level has ranged from a low of 10.8% (October 15, 2022) to a high of 104.5% (October 16, 2021). On average the reservoir is fullest around April and at its lowest around September.
It is operated by BOR primarily for multiple purposes. It lies within the Oregon basin at 44.499°N, 121.154°W.
Key facts
- Current fill level
- 80.1%
- Water stored
- 6 hm³
- Total capacity
- 7 hm³
- 7-day change
- ▲ 1.4 pts
- Year-on-year
- ▲ 11.3 pts
- Primary use
- Multipurpose
- River basin
- Oregon
- Operator
- BOR
- Coordinates
- 44.499°N, 121.154°W
- Last updated
- July 28, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 28 Jul 2026 | 80.1% | 6 |
| 27 Jul 2026 | 78.7% | 5 |
| 26 Jul 2026 | 76.3% | 5 |
| 25 Jul 2026 | 73.2% | 5 |
| 24 Jul 2026 | 70.2% | 5 |
| 23 Jul 2026 | 66.8% | 5 |
| 22 Jul 2026 | 65.8% | 5 |
| 21 Jul 2026 | 66.8% | 5 |
| 20 Jul 2026 | 66.5% | 5 |
| 19 Jul 2026 | 66.5% | 5 |
| 18 Jul 2026 | 65.8% | 5 |
| 17 Jul 2026 | 64.3% | 4 |
Frequently asked questions
What is the current water level of Haystack Reservoir and Dam (HAY)?
As of July 28, 2026, Haystack Reservoir and Dam (HAY) is at 80.1% of its capacity, holding approximately 6 hm³ of water, according to BOR RISE (US Bureau of Reclamation) data.
Is Haystack Reservoir and Dam (HAY) reservoir full?
No. As of July 28, 2026, Haystack Reservoir and Dam (HAY) is high at 80.1% of its capacity, so it is not full.
Is the water level at Haystack Reservoir and Dam (HAY) rising or falling?
The level at Haystack Reservoir and Dam (HAY) has been broadly stable over the latest week on record (+1.4 points).
How much water can Haystack Reservoir and Dam (HAY) hold?
Haystack Reservoir and Dam (HAY) has a total capacity of 7 hm³.
Where is Haystack Reservoir and Dam (HAY) reservoir located?
Haystack Reservoir and Dam (HAY) is located in Oregon, United States, within the Oregon basin (coordinates 44.499°N, 121.154°W).
What is Haystack Reservoir and Dam (HAY) used for?
Haystack Reservoir and Dam (HAY) is used primarily for multiple purposes, and is managed by BOR.