Reservoir · New York · United States · USGS NWIS
Cannonsville Reservoir
78.2% full
Capacity
357.34 hm³
Volume stored
279 hm³
Coordinates
42.073°N, 75.378°W
Last updated
2026-08-04
Current fill
78.2%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: 2026-08-04.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 42.073, -75.378 · Open in Google Maps
About Cannonsville Reservoir
As of August 4, 2026, Cannonsville Reservoir is filled to 78.2% of its total capacity, holding roughly 279 hm³ of water out of a maximum 357 hm³. At this level the reservoir is within its normal operating range.
Over the most recent week on record the fill level has held broadly steady (+0.0 pts).
Across the readings we hold for Cannonsville Reservoir — 1 data points between August 4, 2026 and August 4, 2026 — the level has ranged from a low of 78.2% (August 4, 2026) to a high of 78.2% (August 4, 2026).
It is operated by NYCDEP primarily for water supply. It lies within the New York basin at 42.073°N, 75.378°W.
Key facts
- Current fill level
- 78.2%
- Water stored
- 279 hm³
- Total capacity
- 357 hm³
- 7-day change
- No change
- Primary use
- Water supply
- River basin
- New York
- Operator
- NYCDEP
- Coordinates
- 42.073°N, 75.378°W
- Last updated
- August 4, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 4 Aug 2026 | 78.2% | 279 |
Frequently asked questions
What is the current water level of Cannonsville Reservoir?
As of August 4, 2026, Cannonsville Reservoir is at 78.2% of its capacity, holding approximately 279 hm³ of water, according to NYC DEP (Bureau of Water Supply) data.
Is Cannonsville Reservoir reservoir full?
No. As of August 4, 2026, Cannonsville Reservoir is within its normal operating range at 78.2% of its capacity, so it is not full.
Is the water level at Cannonsville Reservoir rising or falling?
The level at Cannonsville Reservoir has been broadly stable over the latest week on record (0.0 points).
How much water can Cannonsville Reservoir hold?
Cannonsville Reservoir has a total capacity of 357 hm³.
Where is Cannonsville Reservoir reservoir located?
Cannonsville Reservoir is located in New York, United States, within the New York basin (coordinates 42.073°N, 75.378°W).
What is Cannonsville Reservoir used for?
Cannonsville Reservoir is used primarily for water supply, and is managed by NYCDEP.