East Sidney Lake at East Sidney water level — New York
East Sidney Lake at East Sidney in New York was last measured at 1,150.11 ft (datum NGVD29), as of Aug 31, 2026, 3:00 AM (UTC-05:00) (USGS Water Services). Over its recent trend window the level has been falling (−0.4 ft). This reading is provisional and subject to revision.
- % of conservation pool full
- Not reported
- Storage
- 3,124 acre-ft
- Recent trend
- ↓Falling
−0.4 ft over the trend window
Recent trend
Readings this station published between Jun 2, 2026 and Aug 31, 2026 — a 89-day window — downsampled for display.
Data: USGS Water Services (waterservices.usgs.gov) and USACE CWMS Data (cwms-data.usace.army.mil), retrieved 2026-08-31. Both public domain (a work of the U.S. Government, 17 U.S.C. §105).
Source: USGS site 01499500 · USACE NAB/East Sidney, retrieved Aug 31, 2026, 8:24 AM (UTC+00:00). Official page for this lake →
About this gauge's record
This site's drainage basin covers approximately 103 sq mi of contributing watershed.
The dam behind East Sidney Lake at East Sidney
East Sidney Lake at East Sidney is held back by East Sidney Dam (also recorded as East Sidney Lake) , a concrete gravity structure, resisting the reservoir by its own weight alone , standing 130 ft high and running 2,010 ft along its crest , built across OULEOUT CREEK in Delaware County , near UNADILLA . It was completed in 1950 , and is owned by USACE - Baltimore District (a federal owner) , to a design credited to CENAB.
Its recorded primary purpose is flood risk reduction — the pool is drawn down between storms so there is empty space waiting for the next flood, which is why this level can fall in dry weather and climb sharply after rain . It also serves flood risk reduction;recreation.
It is founded on rock and soil, with a concrete core. Its spillway is ungated: once the pool reaches the crest, water leaves on its own and the operator cannot hold it back. The spillway opening is 240 ft wide.
NID classes it high hazard potential. That describes what a failure would cost downstream — loss of life would be expected — and says nothing about how likely a failure is, or what condition the dam is in.
At its normal pool the reservoir covers about 210 acres. NID records a maximum storage of 58,350 acre-ft against a normal storage of 2,836 acre-ft. Its maximum discharge capacity is 81,000 cubic feet per second.
Dam facts: National Inventory of Dams record NY01211 , filed by US Army Corps of Engineers — U.S. Army Corps of Engineers, public domain. Water levels above come from USGS Water Services and are a separate source. (How this dam was matched to this gauge →)
How East Sidney Lake at East Sidney compares nearby
4 of 5 nearby lakes with a current trend are also falling right now.
Nearby lakes
The six nearest published lakes by centroid distance (great-circle) — cross-state neighbors included.
| Lake | State | Level | Distance |
|---|---|---|---|
| Cannonsville Reservoir | NY | 1,134.38 ft | 28 km |
| Pepacton Reservoir | NY | 1,269.09 ft | 43 km |
| Whitney Point Lake at Whitney Point | NY | 973.26 ft | 61 km |
| Schoharie Reservoir | NY | 1,130.11 ft | 65 km |
| Stillwater Lake | PA | — | 73 km |
| Neversink Reservoir | NY | 1,431.19 ft | 74 km |
Frequently asked questions
- What is the current water level of East Sidney Lake at East Sidney?
- As of Aug 31, 2026, 3:00 AM (UTC-05:00), the pool elevation was 1,150.11 ft (datum NGVD29), provisional and subject to revision. See the trend chart above for the recent direction.
- Is East Sidney Lake at East Sidney full right now?
- Its managing agency does not publish a %-of-conservation-pool-full figure for this lake, so we show the bare level rather than estimate one.
- Where does this data come from?
- From USGS site 01499500 · USACE NAB/East Sidney, retrieved Aug 31, 2026, 8:24 AM (UTC+00:00).
More in New York
See every lake tracked in New York, or read the methodology behind these figures.