Reservoir · Massachusetts · United States · USGS NWIS
Wachusett Reservoir
92.4% full
Capacity
246.05 hm³
Volume stored
227 hm³
Coordinates
42.385°N, 71.745°W
Last updated
2026-09-01
Current fill
92.4%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: 2026-09-01.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 42.385, -71.745 · Open in Google Maps
About Wachusett Reservoir
As of September 1, 2026, Wachusett Reservoir is filled to 92.4% of its total capacity, holding roughly 227 hm³ of water out of a maximum 246 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 Wachusett Reservoir — 1 data points between September 1, 2026 and September 1, 2026 — the level has ranged from a low of 92.4% (September 1, 2026) to a high of 92.4% (September 1, 2026).
It is operated by MWRA primarily for water supply. It lies within the Massachusetts basin at 42.385°N, 71.745°W.
Key facts
- Current fill level
- 92.4%
- Water stored
- 227 hm³
- Total capacity
- 246 hm³
- 7-day change
- No change
- Primary use
- Water supply
- River basin
- Massachusetts
- Operator
- MWRA
- Coordinates
- 42.385°N, 71.745°W
- Last updated
- September 1, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 1 Sep 2026 | 92.4% | 227 |