Reservoir · Massachusetts · United States · USGS NWIS
Quabbin Reservoir
80.6% full
Capacity
1,559.59 hm³
Volume stored
1257 hm³
Coordinates
42.300°N, 72.345°W
Last updated
2026-08-01
Current fill
80.6%vs 7 days ago
0.0%stable
vs 1 year ago
N/A7-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: 2026-08-01.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 42.300, -72.345 · Open in Google Maps
About Quabbin Reservoir
As of August 1, 2026, Quabbin Reservoir is filled to 80.6% of its total capacity, holding roughly 1,257 hm³ of water out of a maximum 1,560 hm³. At this level the reservoir is high.
Over the most recent week on record the fill level has held broadly steady (+0.0 pts).
Across the readings we hold for Quabbin Reservoir — 1 data points between August 1, 2026 and August 1, 2026 — the level has ranged from a low of 80.6% (August 1, 2026) to a high of 80.6% (August 1, 2026).
It is operated by MWRA primarily for water supply. It lies within the Massachusetts basin at 42.300°N, 72.345°W.
Key facts
- Current fill level
- 80.6%
- Water stored
- 1,257 hm³
- Total capacity
- 1,560 hm³
- 7-day change
- No change
- Primary use
- Water supply
- River basin
- Massachusetts
- Operator
- MWRA
- Coordinates
- 42.300°N, 72.345°W
- Last updated
- August 1, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 1 Aug 2026 | 80.6% | 1,257 |
Frequently asked questions
What is the current water level of Quabbin Reservoir?
As of August 1, 2026, Quabbin Reservoir is at 80.6% of its capacity, holding approximately 1,257 hm³ of water, according to MWRA (Massachusetts Water Resources Authority) data.
Is Quabbin Reservoir reservoir full?
No. As of August 1, 2026, Quabbin Reservoir is high at 80.6% of its capacity, so it is not full.
Is the water level at Quabbin Reservoir rising or falling?
The level at Quabbin Reservoir has been broadly stable over the latest week on record (0.0 points).
How much water can Quabbin Reservoir hold?
Quabbin Reservoir has a total capacity of 1,560 hm³.
Where is Quabbin Reservoir reservoir located?
Quabbin Reservoir is located in Massachusetts, United States, within the Massachusetts basin (coordinates 42.300°N, 72.345°W).
What is Quabbin Reservoir used for?
Quabbin Reservoir is used primarily for water supply, and is managed by MWRA.