Reservoir in United States
GDW 598
- Identifier
- GDW 598
- Registered area
- 13.793 km²
- Registered capacity
- 61.6 million m³
- Outline
- Global Dam Watch
Water level today
The satellite measures the height of the water surface above sea level. Every figure carries how old it is, because the age of a level is that level’s error.
484.377mplus or minus 0.14
484.377 m
98 of 100
80 percent band. Out-of-fold coverage 0.805 [0.759, 0.848] at 176 gauged reservoirs; weakest held-out country India and other at 0.511, so the band is calibrated where the labels are dense and not everywhere. Measured on archive-confirmed observations.
Where the level is heading
A three-to-four week outlook, with the range the level falls in 80 times out of 100. It widens with distance, because further ahead is less certain.
| Lead | Low | Median | High |
|---|---|---|---|
| 7 days | 484.31 | 484.38 | 484.58 |
| 14 days | 484.28 | 484.38 | 484.48 |
| 21 days | 484.19 | 484.38 | 484.50 |
| 28 days | 484.28 | 484.38 | 484.53 |
How this record was made
Every number on this page was computed once, under a frozen specification, from the sources listed here. The page computes nothing.
- Validation
- Checked against held-out gauges in this reservoir’s own climate and size group.
- Continuity
- A Sentinel-3 or Sentinel-6 radar track crosses this reservoir, so a level continues even if SWOT stops.
- If SWOT stops
- A Sentinel-3 or Sentinel-6 nadir track crosses this reservoir, but below 20 km2 the nadir series has never passed the half-metre rule (experiment 34). Without SWOT the geometry crosses it and the level is not yet supported by measurement.
- Input tier
- universal
- Specification
- 2026.09.d
- SWOT product version
- D
- Computed
- 2026-09-21T08:46:36.980159Z
- Ages computed at
- 2026-09-22T20:34:06.312469Z
- Next pass expected
- 2026-09-19
Sources
- SWOT L2 HR LakeSP, LakeSP prior, RiverSP, PIXC, PIXCVec, NASA Earth science data policy: CC0 unless marked otherwise; commercial use and redistribution permitted
- Hydrocron (PO.DAAC time-series API over SWOT products), NASA Earth science data policy, as the products it serves; no terms, rate limits or bulk restrictions stated
- ICESat-2 ATL13 V007 (NSIDC), NASA Earth science data policy, CC0
- Global Dam Watch v1.0, CC BY 4.0
- SWOT Prior Lake Database v2.02, ETALAB 2.0 (Licence Ouverte): commercial use with attribution
- SWORD v17c, CC BY 4.0
- Hydroweb lakes and rivers, ETALAB 2.0
- Copernicus Sentinel data: Sentinel-1, 2, 3, 6 level-1 and level-2 files, EU Legal Notice on the use of Copernicus Sentinel Data and Service Information: free, full and open; no commercial restriction
- Copernicus Data Space Ecosystem: OData catalogue, download and identity endpoints, Sentinel data routes to the EU Legal Notice; catalogue search and file download only
- JRC Global Surface Water, Produced under the Copernicus Programme; provided free of charge, without restriction of use
- Köppen-Geiger 1 km climate classification, CC BY 4.0
- Chronos-2 (Amazon), Apache 2.0
The rest of the record
The observation series behind this level, every version this record has been served as, and the nadir series that continues it are served with a key.