Big Sioux River at Trent
Future / Actual / Minor
OWP 2.0 WWA Modal Title
01/11/2021, 10:04 PM UTC through 01/11/2021, 10:04 PM UTC
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- Warning: no valid ratings curve available. Transformations to and from FEET/CFS/KCFS will not happen.
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Observed (OBS) 06/18/2025 4:15 AM CDTRecord: 1501.4 ftCATEGORY STAGE 
Major Flooding 1499 ft Moderate Flooding 1496 ft Minor Flooding 1495 ft Action 1494 ft Reliability of the Forecast:
NOTE: Forecasts are not available. Only observed stages are available for this point.
No forecasts are available for this location
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
- 1501 - Water reaches the bottom of the bridge at the gauge site on 240th St.
- 1499 - Several houses in Trent will be surrounded by water.
- 1498 - Flood waters reach into the backyards of several houses in Trent. 240th St on the west side of Trent begins to flood.
- 1496 - 478th Avenue and 242nd Street begin to flood.
- 1495 - Flooding begins to affect agricultural lands west of Trent along 240th Street. The river access road just east of the bridge on 240th begins to flood.
Gauge Info
| Coordinates | 43.9063, -96.6631 |
| RFC | MBRFC |
| State | SD |
| WFO | FSD |
| County | Moody |
| Data Provider(s) | |
| South Dakota DANR | Observations courtesy of South Dakota DANR |
Gauge Location
Recent Crests
| 1. | 1497.33 ft | on 06-22-2024 |
| 2. | 1498.12 ft | on 04-10-2023 |
| 3. | 1495.79 ft | on 03-14-2020 |
| 4. | 1501.42 ft | on 09-13-2019 |
| 5. | 1500.00 ft | on 03-24-2019 |
Recent Crests
| 1. | 1497.33 ft | on 06-22-2024 |
| 2. | 1498.12 ft | on 04-10-2023 |
| 3. | 1495.79 ft | on 03-14-2020 |
| 4. | 1501.42 ft | on 09-13-2019 |
| 5. | 1500.00 ft | on 03-24-2019 |
| 6. | 1498.00 ft | on 04-26-2018 |
| 7. | 1495.84 ft | on 03-25-2018 |
Historic Crests
| 1. | 1501.42 ft | on 09-13-2019 |
| 2. | 1500.00 ft | on 03-24-2019 |
| 3. | 1498.12 ft | on 04-10-2023 |
| 4. | 1498.00 ft | on 04-26-2018 |
| 5. | 1497.33 ft | on 06-22-2024 |
Historic Crests
| 1. | 1501.42 ft | on 09-13-2019 |
| 2. | 1500.00 ft | on 03-24-2019 |
| 3. | 1498.12 ft | on 04-10-2023 |
| 4. | 1498.00 ft | on 04-26-2018 |
| 5. | 1497.33 ft | on 06-22-2024 |
| 6. | 1495.84 ft | on 03-25-2018 |
| 7. | 1495.79 ft | on 03-14-2020 |
Vertical Datum Table
| type | NAVD88 |
|---|---|
| major Flooding | 1499.00 ft |
| moderate Flooding | 1496.00 ft |
| minor Flooding | 1495.00 ft |
| action | 1494.00 ft |
| Latest Value | 1486.30 ft |
| Gauge Zero | 0.00 ft |
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.
Resources
Hydrologic Resource Links
- River Forecast Centers
- NWS Sioux Falls Flooding Resource Page
- NOHRSC Snow Information
- USACE Missouri River Water Management
- USGS National Water Dashboard
- FEMA Flood Insurance Information
- South Dakota Flood Information System
- Iowa Flood Information System
- Missouri River Flood Information System
- Minnesota DNR
- Nebraska Real-Time Flood Forecasting
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