North Fork Whetstone River near Milbank
Future / Actual / Minor
OWP 2.0 WWA Modal Title
01/11/2021, 10:04 PM UTC through 01/11/2021, 10:04 PM UTC
Sender
Sent
- Upstream gauge unavailableDownstream gauge unavailableWarning: no valid ratings curve available. Transformations to and from FEET/CFS/KCFS will not happen.
Traces and Thresholds Click to turn on/off display
Observed (OBS) 06/12/2025 6:15 AM CDTCATEGORY STAGE 
Major Flooding 1062 ft Moderate Flooding 1060 ft Minor Flooding 1056 ft Action 1054 ft Reliability of the Forecast:
NOTE: Graphical forecasts are not available during times of high water, forecast crest information can be found in the local WFO web page.
National Water Model Hydrograph
Official NWS streamflow forecasts are produced by NWS hydrologic forecasters for river gauge locations using hydrologic models which are calibrated to that location. This process considers additional guidance and information, including local expertise and experience, to produce the best forecast possible. The NWM output provides supplemental guidance to NWS forecasters and should not be considered an official NWS river forecast.
Flood Impacts
- 1064 - The bridges are overtopped on 145th Street and 480th Avenue.
- 1063 - The intersection of 145th Street and 480th Avenue begins to flood, and 144th Street begins to flood.
- 1062 - Water reaches the top of the bridge on 144th Street.
Gauge Info
| Coordinates | 45.2837, -96.5964 |
| RFC | NCRFC |
| State | SD |
| WFO | ABR |
| County | Grant |
| Data Provider(s) | |
| South Dakota -DANR | South Dakota -DANR |
Gauge Location
Vertical Datum Table
| type | NAVD88 |
|---|---|
| major Flooding | 1062.00 ft |
| moderate Flooding | 1060.00 ft |
| minor Flooding | 1056.00 ft |
| action | 1054.00 ft |
| Latest Value | 1049.93 ft |
| Gauge Zero | 0.00 ft |
Gauge Photos
No Images Found
Probability Information
No Images Available
Collaborative Agencies
The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.