Humboldt River near Imlay
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
- 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 9:05 PM PDTRecord: 14.6 ftCATEGORY STAGE 
Major Flooding 12 ft Moderate Flooding 11.2 ft Minor Flooding 10.3 ft Action 9.5 ft Reliability of the Forecast: Based on current and forecast river, weather and reservoir conditions
NOTE: Forecasts are issued routinely year-round.
Stage may be affected by ice during winter months.
Reported historic crests have been estimated using recent ratings due to previous channel, location and/or datum changes. USGS observed crests can be found at: waterdata.usgs.gov/nwis/rt Please also see Additional Information tab at the bottom of this 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
- 11.7 - Access to the Flying M Ranch is limited due to water over Old Idaho Stage Road. Flood waters up to a foot deep are possible on Tungsten Road, but the road may remain passable to high clearance, four-wheel drive vehicles.
- 10.3 - Minor flooding of Tungsten Road south of the river between the river and the Pit Taylor Canal. Some minor low land flooding is possible very near the river from the Humboldt County line to Rye Patch. At a higher level access to Flying M Ranch via Old Idaho Stage Road is flooded.
Gauge Info
| Coordinates | 40.6924, -118.204 |
| RFC | CNRFC |
| State | NV |
| WFO | REV |
| County | Pershing |
| Data Provider(s) | |
| US Geological Survey | USGS--Water Resources of the United States |
| USGS | 10333000 |
Gauge Location
Recent Crests
| 1. | 9.80 ft | on 06-17-2023 | (P) |
| 2. | 9.06 ft | on 05-21-2023 | (P) |
| 3. | 9.81 ft | on 06-25-2019 | (P) |
| 4. | 10.37 ft | on 05-29-2017 | (P) |
| 5. | 11.12 ft | on 04-06-2017 | (P) |
Recent Crests
| 1. | 9.80 ft | on 06-17-2023 | (P) |
| 2. | 9.06 ft | on 05-21-2023 | (P) |
| 3. | 9.81 ft | on 06-25-2019 | (P) |
| 4. | 10.37 ft | on 05-29-2017 | (P) |
| 5. | 11.12 ft | on 04-06-2017 | (P) |
| 6. | 12.59 ft | on 04-19-2006 | (P) |
| 7. | 12.76 ft | on 06-04-2005 | (P) |
| 8. | 10.45 ft | on 06-26-1998 | (P) |
| 9. | 9.89 ft | on 06-29-1997 | (P) |
| 10. | 10.37 ft | on 07-02-1995 | (P) |
| 11. | 10.60 ft | on 03-10-1986 | (P) |
| 12. | 14.58 ft | on 05-27-1984 | |
| 13. | 12.12 ft | on 06-17-1983 | (P) |
| 14. | 9.83 ft | on 06-22-1980 | (P) |
| 15. | 10.76 ft | on 06-04-1975 | (P) |
| 16. | 9.96 ft | on 06-10-1971 | (P) |
| 17. | 10.94 ft | on 04-24-1969 | (P) |
| 18. | 13.31 ft | on 05-09-1952 | (P) |
| 19. | 10.36 ft | on 05-31-1945 | (P) |
Historic Crests
| 1. | 14.58 ft | on 05-27-1984 | |
| 2. | 13.31 ft | on 05-09-1952 | (P) |
| 3. | 12.76 ft | on 06-04-2005 | (P) |
| 4. | 12.59 ft | on 04-19-2006 | (P) |
| 5. | 12.12 ft | on 06-17-1983 | (P) |
Historic Crests
| 1. | 14.58 ft | on 05-27-1984 | |
| 2. | 13.31 ft | on 05-09-1952 | (P) |
| 3. | 12.76 ft | on 06-04-2005 | (P) |
| 4. | 12.59 ft | on 04-19-2006 | (P) |
| 5. | 12.12 ft | on 06-17-1983 | (P) |
| 6. | 11.12 ft | on 04-06-2017 | (P) |
| 7. | 10.94 ft | on 04-24-1969 | (P) |
| 8. | 10.76 ft | on 06-04-1975 | (P) |
| 9. | 10.60 ft | on 03-10-1986 | (P) |
| 10. | 10.45 ft | on 06-26-1998 | (P) |
| 11. | 10.37 ft | on 05-29-2017 | (P) |
| 12. | 10.37 ft | on 07-02-1995 | (P) |
| 13. | 10.36 ft | on 05-31-1945 | (P) |
| 14. | 9.96 ft | on 06-10-1971 | (P) |
| 15. | 9.89 ft | on 06-29-1997 | (P) |
| 16. | 9.83 ft | on 06-22-1980 | (P) |
| 17. | 9.81 ft | on 06-25-2019 | (P) |
| 18. | 9.80 ft | on 06-17-2023 | (P) |
| 19. | 9.06 ft | on 05-21-2023 | (P) |
Vertical Datum Table
| type | NAVD88 |
|---|---|
| major Flooding | 4145.20 ft |
| moderate Flooding | 4144.40 ft |
| minor Flooding | 4143.50 ft |
| action | 4142.70 ft |
| Latest Value | 4137.93 ft |
| Gauge Zero | 4133.20 ft |
Unique Local Info
Reported historic crest estimates have been normalized using USGS Rating 35.0 (as of 10/23/2023) due to previous channel, location and/or datum changes. For observed crests please go to:https://nwis.waterdata.usgs.gov/usa/nwis/peak/?site_no=10333000
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
- Text Products
- Past Precipitation
- Forecast Precipitation
- California-Nevada River Forecast Center Homepage
- USGS Real-Time Hydrologic Data for Nevada
- USGS Real-Time Hydrologic Data for California
- NWS Climate Prediction Center: Outlook Maps, Graphs & Tables
- NV NRCS Snow Program
- Inundation Mapping Locations
- California Data Exchange
- Guide to NWS Hydrologic Information on the Web
Additional Resource Links
- NWS Precipitation and River Forecasting
- Area Hydrographs
- NWS Headquarters, Silver Spring MD
- NWS Western Region Headquarters, Salt Lake City UT
- Western Regional Climate Center, Reno NV
- NWS Forecast Office Homepage, Reno NV
- NOAA Snow Information Center
- Flood Smart Web Page
- FEMA Flood Insurance Program
- FEMA Flood Insurance Rate Maps Interface