Boise River at Eagle Island
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.
Traces and Thresholds Click to turn on/off display
Observed (OBS) 06/12/2025 11:45 AM MDTCATEGORY FLOW Major Flooding 15 kcfs Moderate Flooding 11 kcfs Minor Flooding 7 kcfs Action 6.5 kcfs Reliability of the Forecast: Based on current and forecast river, weather and reservoir conditions
NOTE: Forecasts are issued routinely year-round.
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
- 16000 - Major flooding will occur near the river in Boise, Garden City, Eagle, Star, and Caldwell. Some residential areas in low lying areas near the river will be flooded with water entering some houses. A flood of this magnitude has not occurred on the Boise River since 1943. Most of the area within the 100 year flood plain, including many city parks near the river, will be underwater. Debris piling up on bridge crossings will cause additional flood damage.
- 12000 - Flooding will occur in low areas and parkland adjacent to the river in Boise, Garden City, Eagle, Star, and Caldwell. Flooding of low lying residential streets in areas adjacent to the river is likely, especially on portions of Eagle Island. Debris damming on bridges crossing the river will occur and may cause water to spill over the road surfaces leading up to the bridge.
- 10500 - Flooding near the river will occur in low areas of Boise, Garden City, Eagle, Star and Caldwell. Portions of Eagle Island will be submerged with flooding of residential property in low lying areas near the river likely. The water should remain below the level of most residential structures, but access in and out of some neighborhoods may be limited by high water.
Gauge Location
Recent Crests
1. | 10.01 ft | on 05-06-2019 |
2. | 9.71 ft | on 05-28-2018 |
3. | 11.93 ft | on 06-06-2017 |
4. | 9.98 ft | on 04-11-2016 |
5. | 6.42 ft | on 05-19-2015 |
Recent Crests
1. | 10.01 ft | on 05-06-2019 |
2. | 9.71 ft | on 05-28-2018 |
3. | 11.93 ft | on 06-06-2017 |
4. | 9.98 ft | on 04-11-2016 |
5. | 6.42 ft | on 05-19-2015 |
6. | 6.68 ft | on 04-09-2014 |
7. | 6.39 ft | on 05-21-2013 |
8. | 10.93 ft | on 05-05-2012 |
9. | 10.07 ft | on 05-18-2011 |
10. | 9.72 ft | on 06-11-2010 |
11. | 9.84 ft | on 06-07-2009 |
12. | 10.56 ft | on 05-20-2008 |
13. | 10.65 ft | on 04-30-2006 |
14. | 11.10 ft | on 05-31-1998 |
15. | 10.52 ft | on 03-27-1997 |
16. | 10.19 ft | on 03-15-1996 |
17. | 10.24 ft | on 05-23-1993 |
18. | 10.61 ft | on 06-07-1986 |
19. | 10.37 ft | on 05-29-1984 |
20. | 11.54 ft | on 06-13-1983 |
21. | 10.47 ft | on 06-06-1983 |
22. | 10.54 ft | on 06-29-1982 |
Historic Crests
1. | 11.93 ft | on 06-06-2017 |
2. | 11.54 ft | on 06-13-1983 |
3. | 11.10 ft | on 05-31-1998 |
4. | 10.93 ft | on 05-05-2012 |
5. | 10.65 ft | on 04-30-2006 |
Historic Crests
1. | 11.93 ft | on 06-06-2017 |
2. | 11.54 ft | on 06-13-1983 |
3. | 11.10 ft | on 05-31-1998 |
4. | 10.93 ft | on 05-05-2012 |
5. | 10.65 ft | on 04-30-2006 |
6. | 10.61 ft | on 06-07-1986 |
7. | 10.56 ft | on 05-20-2008 |
8. | 10.54 ft | on 06-29-1982 |
9. | 10.52 ft | on 03-27-1997 |
10. | 10.47 ft | on 06-06-1983 |
11. | 10.37 ft | on 05-29-1984 |
12. | 10.24 ft | on 05-23-1993 |
13. | 10.19 ft | on 03-15-1996 |
14. | 10.07 ft | on 05-18-2011 |
15. | 10.01 ft | on 05-06-2019 |
16. | 9.98 ft | on 04-11-2016 |
17. | 9.84 ft | on 06-07-2009 |
18. | 9.72 ft | on 06-11-2010 |
19. | 9.71 ft | on 05-28-2018 |
20. | 6.68 ft | on 04-09-2014 |
21. | 6.42 ft | on 05-19-2015 |
22. | 6.39 ft | on 05-21-2013 |
Gauge Photos
No Images Found
Probability Information
No Images Available
Unique Local Info
This is a pseudo gage being used as a place- holder for flood inundation maps on the Boise River for the river reach from the head of Eagle Island to the Ada-Canyon County line. Data from upstream gage BIGI1 is being used to populate observed and forecast data, flood flows and impacts, and historical crest information.
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.