Data health

Storm Mode / Observations

Station and river observations

METAR/SPECI uses the existing AviationWeather.gov bulk cache over the lower 48 and its margin. NWPS retains only gauges in the existing action-stage-or-above observed list; forecast-only gauges can have no observation. Absence never establishes zero wind, low water, or safe conditions.

Water-level gauge ESLN8

current · Observed 49.89 ft at 2026-10-17 09:15:00 UTC · Major flooding.

Lake or reservoir level · Lakota · Eastern Stump Lake · -98.3575, 47.868611. Units ft; datum not supplied.

Source checked 2026-10-17 10:45:05.522Z · current.

Stage in this gauge’s units, not a regional flood depth. Tide/lake gauges remain water levels; datum is not supplied by this feed. Historical observations and the latest forecast keep separate times.

Retained observations: 6; target 24 hours, at most 96 reports per station. Recording began 2026-10-17 06:15:05.234Z; oldest available reading 2026-10-17 04:15:00 UTC.

Observed stage and separate NWS forecast at ESLN8 (ft)Dots are retained observations. Lines break for missing fields, long intervals or changed station location or units. 0 recorded discontinuities. Dashed lines, when present, are the separately issued NWS forecast.50.948.9ft10-17 04:15Z10-17 09:15Z2026-10-17 04:15:00 UTC · 49.89 ft2026-10-17 05:15:00 UTC · 49.92 ft2026-10-17 06:15:00 UTC · 49.91 ft2026-10-17 07:15:00 UTC · 49.89 ft2026-10-17 08:15:00 UTC · 49.88 ft2026-10-17 09:15:00 UTC · 49.89 ft
Observed stage and separate NWS forecast · 6 retained observations; 0 discontinuities. Lines join reported values only; missing intervals are not interpolated.

NWS forecast · current

No forecast maximum supplied.

Forecasts are not available. Only observed stages are available for this point.

Placeholder thresholds are not used or plotted.

NWS gauge impact statements
  • 59 ft: Prior to January 2010, the height that Devils Lake/Stump Lake spills into Sheyenne River through Tolna Coulee. Combined area of Devils and Stump Lakes would be 450 sq mi.
  • 58 ft: Tolna Coulee Control Structure spill height (May 2012). Tolna Coulee clean-out height (January 2010).
  • 55.9 ft: Elevation of State Highway 1 (raised in 2001).
  • 54.4 ft: **** Record level - July 2, 2011 - USGS Max Daily Average ****
  • 51.5 ft: Nelson Co. Road 27 flooded.
  • 48 ft: Nelson Co. Road 23 (north) flooded.
  • 46.5 ft: Approximate height of Jerusalem Coulee from East Lake to West Stump Lake (surveyed by ND SWC 2021).
  • 35 ft: Nelson Co. Road 23A flooded.
  • 34 ft: Nelson Co. Road 23 (middle) flooded.
  • 25 ft: Nelson Co. Road 23 (south) and Nelson Co. Road 15 flooded.
  • 6 ft: Nelson Co. Road 4 flooded.
  • -1 ft: West and East Stump Lakes merge.
Observed reports as a table (6)
Observed (UTC)Stage / unitsSource category / water
2026-10-17 04:15:00 UTC49.89 ftMajor flooding · Lake or reservoir level
2026-10-17 05:15:00 UTC49.92 ftMajor flooding · Lake or reservoir level
2026-10-17 06:15:00 UTC49.91 ftMajor flooding · Lake or reservoir level
2026-10-17 07:15:00 UTC49.89 ftMajor flooding · Lake or reservoir level
2026-10-17 08:15:00 UTC49.88 ftMajor flooding · Lake or reservoir level
2026-10-17 09:15:00 UTC49.89 ftMajor flooding · Lake or reservoir level
Capture times, quality and provenance

Each report keeps its observation time, first capture of this version, and the SHA-256 of the source bulk body. Corrections at the same observation time replace that point and are marked; unrelated bulk-file changes do not freshen a report.

  • Observed 2026-10-17 04:15:00 UTC, captured 2026-10-17 06:15:05.234Z; source body SHA-256 59def4ab364727656cb6987939ba27a3a22ae792b74344565dc73a5086b5ca2b.
  • Observed 2026-10-17 05:15:00 UTC, captured 2026-10-17 06:25:04.966Z; source body SHA-256 a55d6ab71db55a2ee8a268331c449d3fbde4abd1e4608ff87b0cd2cbc8b1e784.
  • Observed 2026-10-17 06:15:00 UTC, captured 2026-10-17 07:25:05.694Z; source body SHA-256 192576bd8ef9fd4b46c5bad0ab08cbe3f965bb0d8d07d80380e66ed2331749bd.
  • Observed 2026-10-17 07:15:00 UTC, captured 2026-10-17 08:25:04.581Z; source body SHA-256 608146df439df6605f743df87dc6a9ef7de4b31142f1c3b38ab76306641f4590.
  • Observed 2026-10-17 08:15:00 UTC, captured 2026-10-17 09:25:05.138Z; source body SHA-256 37602d700c20a8e6d2579725b16a68a2439c91437f32f2cf89853986f7e530f7.
  • Observed 2026-10-17 09:15:00 UTC, captured 2026-10-17 10:25:07.123Z; source body SHA-256 503ac40ded76b5d404f4e3d833c8e73f53a40cf19d40759af09f6b4a1fbabb51.

Only observed gauge records enter this history. Forecast maxima and forecast hydrograph points never become observations. A missing datum or unsupported flow value remains unknown.

Observation source page · Cached readings as JSON · Official source

Gauges in the latest cached source

115 total · source current; checked . Showing 15 on page 2. 0 gauges have suspect readings set aside.

Source status · Storm Mode