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Hydrograph River at a Glance Download Inundation
Mapping
Boise River at Eagle Island River Discharge (cfs)Stage (ft)Observed: 4056 cfs at 9:45AM Apr 16, 2018Observed: 4056 cfs at 10:00AM Apr 16, 2018Observed: 4016 cfs at 10:15AM Apr 16, 2018Observed: 4016 cfs at 10:30AM Apr 16, 2018Observed: 4030 cfs at 10:45AM Apr 16, 2018Observed: 3990 cfs at 11:00AM Apr 16, 2018Observed: 3964 cfs at 11:15AM Apr 16, 2018Observed: 4003 cfs at 11:30AM Apr 16, 2018Observed: 3924 cfs at 11:45AM Apr 16, 2018Observed: 4003 cfs at 12:00PM Apr 16, 2018Observed: 3977 cfs at 12:15PM Apr 16, 2018Observed: 3911 cfs at 12:30PM Apr 16, 2018Observed: 3911 cfs at 12:45PM Apr 16, 2018Observed: 3911 cfs at 1:00PM Apr 16, 2018Observed: 3924 cfs at 1:15PM Apr 16, 2018Observed: 3937 cfs at 1:30PM Apr 16, 2018Observed: 3885 cfs at 1:45PM Apr 16, 2018Observed: 3950 cfs at 2:00PM Apr 16, 2018Observed: 3911 cfs at 2:15PM Apr 16, 2018Observed: 3885 cfs at 2:30PM Apr 16, 2018Observed: 3911 cfs at 2:45PM Apr 16, 2018Observed: 3924 cfs at 3:00PM Apr 16, 2018Observed: 3937 cfs at 3:15PM Apr 16, 2018Observed: 3845 cfs at 3:30PM Apr 16, 2018Observed: 3924 cfs at 3:45PM Apr 16, 2018Observed: 3911 cfs at 4:00PM Apr 16, 2018Observed: 3898 cfs at 4:15PM Apr 16, 2018Observed: 3898 cfs at 4:30PM Apr 16, 2018Observed: 3911 cfs at 4:45PM Apr 16, 2018Observed: 3924 cfs at 5:00PM Apr 16, 2018Observed: 3898 cfs at 5:15PM Apr 16, 2018Observed: 3937 cfs at 5:30PM Apr 16, 2018Observed: 3924 cfs at 5:45PM Apr 16, 2018Observed: 3924 cfs at 6:00PM Apr 16, 2018Observed: 3872 cfs at 6:15PM Apr 16, 2018Observed: 3898 cfs at 6:30PM Apr 16, 2018Observed: 3911 cfs at 6:45PM Apr 16, 2018Observed: 3924 cfs at 7:00PM Apr 16, 2018Observed: 3872 cfs at 7:15PM Apr 16, 2018Observed: 3924 cfs at 7:30PM Apr 16, 2018Observed: 3924 cfs at 7:45PM Apr 16, 2018Observed: 3845 cfs at 8:00PM Apr 16, 2018Observed: 3885 cfs at 8:15PM Apr 16, 2018Observed: 3858 cfs at 8:30PM Apr 16, 2018Observed: 3845 cfs at 8:45PM Apr 16, 2018Observed: 3911 cfs at 9:00PM Apr 16, 2018Observed: 3885 cfs at 9:15PM Apr 16, 2018Observed: 3845 cfs at 9:30PM Apr 16, 2018Observed: 3898 cfs at 9:45PM Apr 16, 2018Observed: 3858 cfs at 10:00PM Apr 16, 2018Observed: 3872 cfs at 10:15PM Apr 16, 2018Observed: 3858 cfs at 10:30PM Apr 16, 2018Observed: 3885 cfs at 10:45PM Apr 16, 2018Observed: 3872 cfs at 11:15PM Apr 16, 2018Observed: 3858 cfs at 11:30PM Apr 16, 2018Observed: 3885 cfs at 11:45PM Apr 16, 2018Highest Observation: 4378 cfs at 12:00AM Apr 17, 2018Highest Observation: 4378 cfs at 12:15AM Apr 17, 2018Observed: 4365 cfs at 12:30AM Apr 17, 2018Observed: 3885 cfs at 12:45AM Apr 17, 2018Observed: 3832 cfs at 1:00AM Apr 17, 2018Observed: 3832 cfs at 1:15AM Apr 17, 2018Observed: 3911 cfs at 1:30AM Apr 17, 2018Observed: 3911 cfs at 1:45AM Apr 17, 2018Observed: 3898 cfs at 2:00AM Apr 17, 2018Observed: 3911 cfs at 2:15AM Apr 17, 2018Observed: 3885 cfs at 2:30AM Apr 17, 2018Observed: 3845 cfs at 2:45AM Apr 17, 2018Observed: 3858 cfs at 3:00AM Apr 17, 2018Observed: 3845 cfs at 3:15AM Apr 17, 2018Observed: 3872 cfs at 3:30AM Apr 17, 2018Observed: 3924 cfs at 3:45AM Apr 17, 2018Observed: 3911 cfs at 4:00AM Apr 17, 2018Observed: 3885 cfs at 4:15AM Apr 17, 2018Observed: 3872 cfs at 4:30AM Apr 17, 2018Observed: 3898 cfs at 4:45AM Apr 17, 2018Observed: 3911 cfs at 5:00AM Apr 17, 2018Observed: 3858 cfs at 5:15AM Apr 17, 2018Observed: 3819 cfs at 5:30AM Apr 17, 2018Observed: 3885 cfs at 5:45AM Apr 17, 2018Observed: 3872 cfs at 6:00AM Apr 17, 2018Observed: 3911 cfs at 6:15AM Apr 17, 2018Observed: 3924 cfs at 6:30AM Apr 17, 2018Observed: 3924 cfs at 6:45AM Apr 17, 2018Observed: 3898 cfs at 7:00AM Apr 17, 2018Observed: 3885 cfs at 7:15AM Apr 17, 2018Observed: 3872 cfs at 7:30AM Apr 17, 2018Observed: 3885 cfs at 7:45AM Apr 17, 2018Observed: 3872 cfs at 8:00AM Apr 17, 2018Observed: 3872 cfs at 8:15AM Apr 17, 2018Observed: 3911 cfs at 8:30AM Apr 17, 2018Observed: 3858 cfs at 8:45AM Apr 17, 2018Observed: 3832 cfs at 9:00AM Apr 17, 2018Observed: 3898 cfs at 9:15AM Apr 17, 2018Observed: 3885 cfs at 9:30AM Apr 17, 2018Observed: 3832 cfs at 9:45AM Apr 17, 2018Observed: 3885 cfs at 10:00AM Apr 17, 2018Observed: 3769 cfs at 10:15AM Apr 17, 2018Observed: 3537 cfs at 10:30AM Apr 17, 2018Observed: 3198 cfs at 10:45AM Apr 17, 2018Observed: 2995 cfs at 11:00AM Apr 17, 2018Observed: 2974 cfs at 11:15AM Apr 17, 2018Observed: 3016 cfs at 11:30AM Apr 17, 2018Observed: 3112 cfs at 11:45AM Apr 17, 2018Observed: 3252 cfs at 12:00PM Apr 17, 2018Observed: 3306 cfs at 12:15PM Apr 17, 2018Observed: 3339 cfs at 12:30PM Apr 17, 2018Observed: 3416 cfs at 12:45PM Apr 17, 2018Observed: 3449 cfs at 1:00PM Apr 17, 2018Observed: 3471 cfs at 1:15PM Apr 17, 2018Observed: 3449 cfs at 1:30PM Apr 17, 2018Observed: 3449 cfs at 1:45PM Apr 17, 2018Observed: 3383 cfs at 2:00PM Apr 17, 2018Observed: 3394 cfs at 2:15PM Apr 17, 2018Observed: 3317 cfs at 2:30PM Apr 17, 2018Observed: 3295 cfs at 2:45PM Apr 17, 2018Observed: 3306 cfs at 3:00PM Apr 17, 2018Observed: 3361 cfs at 3:15PM Apr 17, 2018Observed: 3295 cfs at 3:30PM Apr 17, 2018Observed: 3317 cfs at 3:45PM Apr 17, 2018Observed: 3295 cfs at 4:00PM Apr 17, 2018Observed: 3405 cfs at 4:15PM Apr 17, 2018Observed: 3372 cfs at 4:30PM Apr 17, 2018Observed: 3317 cfs at 4:45PM Apr 17, 2018Observed: 3372 cfs at 5:00PM Apr 17, 2018Observed: 3383 cfs at 5:15PM Apr 17, 2018Observed: 3372 cfs at 5:30PM Apr 17, 2018Observed: 3416 cfs at 5:45PM Apr 17, 2018Observed: 3427 cfs at 6:00PM Apr 17, 2018Observed: 3405 cfs at 6:15PM Apr 17, 2018Observed: 3394 cfs at 6:30PM Apr 17, 2018Observed: 3416 cfs at 6:45PM Apr 17, 2018Observed: 3383 cfs at 7:00PM Apr 17, 2018Observed: 3405 cfs at 7:15PM Apr 17, 2018Observed: 3372 cfs at 7:30PM Apr 17, 2018Observed: 3394 cfs at 7:45PM Apr 17, 2018Observed: 3438 cfs at 8:00PM Apr 17, 2018Observed: 3405 cfs at 8:15PM Apr 17, 2018Observed: 3394 cfs at 8:30PM Apr 17, 2018Observed: 3383 cfs at 8:45PM Apr 17, 2018Observed: 3383 cfs at 9:00PM Apr 17, 2018Observed: 3361 cfs at 9:15PM Apr 17, 2018Observed: 3328 cfs at 9:30PM Apr 17, 2018Observed: 3328 cfs at 9:45PM Apr 17, 2018Observed: 3317 cfs at 10:00PM Apr 17, 2018Observed: 3317 cfs at 10:15PM Apr 17, 2018Observed: 3339 cfs at 10:30PM Apr 17, 2018Observed: 3317 cfs at 10:45PM Apr 17, 2018Observed: 3317 cfs at 11:15PM Apr 17, 2018Observed: 3339 cfs at 11:30PM Apr 17, 2018Observed: 3317 cfs at 11:45PM Apr 17, 2018Observed: 3664 cfs at 12:00AM Apr 18, 2018Observed: 3690 cfs at 12:15AM Apr 18, 2018Observed: 3728 cfs at 12:30AM Apr 18, 2018Observed: 3328 cfs at 12:45AM Apr 18, 2018Observed: 3328 cfs at 1:00AM Apr 18, 2018Observed: 3306 cfs at 1:15AM Apr 18, 2018Observed: 3295 cfs at 1:30AM Apr 18, 2018Observed: 3306 cfs at 1:45AM Apr 18, 2018Observed: 3252 cfs at 2:00AM Apr 18, 2018Observed: 3274 cfs at 2:15AM Apr 18, 2018Observed: 3328 cfs at 2:30AM Apr 18, 2018Observed: 3252 cfs at 2:45AM Apr 18, 2018Observed: 3350 cfs at 3:00AM Apr 18, 2018Observed: 3306 cfs at 3:15AM Apr 18, 2018Observed: 3306 cfs at 3:30AM Apr 18, 2018Observed: 3350 cfs at 3:45AM Apr 18, 2018Observed: 3317 cfs at 4:00AM Apr 18, 2018Observed: 3339 cfs at 4:15AM Apr 18, 2018Observed: 3274 cfs at 4:30AM Apr 18, 2018Observed: 3339 cfs at 4:45AM Apr 18, 2018Observed: 3350 cfs at 5:00AM Apr 18, 2018Observed: 3317 cfs at 5:15AM Apr 18, 2018Observed: 3317 cfs at 5:30AM Apr 18, 2018Observed: 3317 cfs at 5:45AM Apr 18, 2018Observed: 3317 cfs at 6:00AM Apr 18, 2018Observed: 3306 cfs at 6:15AM Apr 18, 2018Observed: 3295 cfs at 6:30AM Apr 18, 2018Observed: 3328 cfs at 6:45AM Apr 18, 2018Observed: 3263 cfs at 7:00AM Apr 18, 2018Observed: 3339 cfs at 7:15AM Apr 18, 2018Observed: 3339 cfs at 7:30AM Apr 18, 2018Observed: 3328 cfs at 7:45AM Apr 18, 2018Observed: 3317 cfs at 8:00AM Apr 18, 2018Observed: 3317 cfs at 8:15AM Apr 18, 2018Observed: 3263 cfs at 8:30AM Apr 18, 2018Observed: 3328 cfs at 8:45AM Apr 18, 2018Observed: 3317 cfs at 9:00AM Apr 18, 2018Observed: 3306 cfs at 9:15AM Apr 18, 2018Observed: 3295 cfs at 9:30AM Apr 18, 2018Observed: 3306 cfs at 9:45AM Apr 18, 2018Observed: 3317 cfs at 10:00AM Apr 18, 2018Observed: 3295 cfs at 10:15AM Apr 18, 2018Observed: 3317 cfs at 10:30AM Apr 18, 2018Observed: 3219 cfs at 10:45AM Apr 18, 2018Observed: 3166 cfs at 11:00AM Apr 18, 2018Observed: 3080 cfs at 11:15AM Apr 18, 2018Observed: 3048 cfs at 11:30AM Apr 18, 2018Observed: 3005 cfs at 11:45AM Apr 18, 2018Observed: 2952 cfs at 12:00PM Apr 18, 2018Observed: 2984 cfs at 12:15PM Apr 18, 2018Observed: 3016 cfs at 12:30PM Apr 18, 2018Observed: 3059 cfs at 12:45PM Apr 18, 2018Observed: 3112 cfs at 1:00PM Apr 18, 2018Observed: 3112 cfs at 1:15PM Apr 18, 2018Observed: 3091 cfs at 1:30PM Apr 18, 2018Observed: 3069 cfs at 1:45PM Apr 18, 2018Observed: 2974 cfs at 2:00PM Apr 18, 2018Observed: 2963 cfs at 2:15PM Apr 18, 2018Observed: 2984 cfs at 2:30PM Apr 18, 2018Observed: 2942 cfs at 2:45PM Apr 18, 2018Observed: 2974 cfs at 3:00PM Apr 18, 2018Observed: 2995 cfs at 3:15PM Apr 18, 2018Observed: 2974 cfs at 3:30PM Apr 18, 2018Observed: 2984 cfs at 3:45PM Apr 18, 2018Observed: 3037 cfs at 4:00PM Apr 18, 2018Observed: 3005 cfs at 4:15PM Apr 18, 2018Observed: 3134 cfs at 4:30PM Apr 18, 2018Observed: 3187 cfs at 4:45PM Apr 18, 2018Observed: 3177 cfs at 5:00PM Apr 18, 2018Observed: 3252 cfs at 5:15PM Apr 18, 2018Observed: 3166 cfs at 5:30PM Apr 18, 2018Observed: 3134 cfs at 5:45PM Apr 18, 2018Observed: 3123 cfs at 6:00PM Apr 18, 2018Observed: 3069 cfs at 6:15PM Apr 18, 2018Observed: 3069 cfs at 6:30PM Apr 18, 2018Observed: 3027 cfs at 6:45PM Apr 18, 2018Observed: 3016 cfs at 7:00PM Apr 18, 2018Observed: 3016 cfs at 7:15PM Apr 18, 2018Observed: 3091 cfs at 7:30PM Apr 18, 2018Observed: 3102 cfs at 7:45PM Apr 18, 2018Observed: 3123 cfs at 8:00PM Apr 18, 2018Observed: 3091 cfs at 8:15PM Apr 18, 2018Observed: 3069 cfs at 8:30PM Apr 18, 2018Observed: 3069 cfs at 8:45PM Apr 18, 2018Observed: 3048 cfs at 9:00PM Apr 18, 2018Observed: 3037 cfs at 9:15PM Apr 18, 2018Observed: 3069 cfs at 9:30PM Apr 18, 2018Observed: 3037 cfs at 9:45PM Apr 18, 2018Observed: 3048 cfs at 10:00PM Apr 18, 2018Observed: 2984 cfs at 10:15PM Apr 18, 2018Observed: 3027 cfs at 10:30PM Apr 18, 2018Observed: 3005 cfs at 10:45PM Apr 18, 2018Observed: 2984 cfs at 11:15PM Apr 18, 2018Observed: 3027 cfs at 11:30PM Apr 18, 2018Observed: 3005 cfs at 11:45PM Apr 18, 2018Observed: 3307 cfs at 12:00AM Apr 19, 2018Observed: 3395 cfs at 12:15AM Apr 19, 2018Observed: 3395 cfs at 12:30AM Apr 19, 2018Observed: 3069 cfs at 12:45AM Apr 19, 2018Observed: 3048 cfs at 1:00AM Apr 19, 2018Observed: 3027 cfs at 1:15AM Apr 19, 2018Observed: 3048 cfs at 1:30AM Apr 19, 2018Observed: 3037 cfs at 1:45AM Apr 19, 2018Observed: 3037 cfs at 2:00AM Apr 19, 2018Observed: 3037 cfs at 2:15AM Apr 19, 2018Observed: 3059 cfs at 2:30AM Apr 19, 2018Observed: 3027 cfs at 2:45AM Apr 19, 2018Observed: 3048 cfs at 3:00AM Apr 19, 2018Observed: 3037 cfs at 3:15AM Apr 19, 2018Observed: 3048 cfs at 3:30AM Apr 19, 2018Observed: 3048 cfs at 3:45AM Apr 19, 2018Observed: 3091 cfs at 4:00AM Apr 19, 2018Observed: 3016 cfs at 4:15AM Apr 19, 2018Observed: 2995 cfs at 4:30AM Apr 19, 2018Observed: 3059 cfs at 4:45AM Apr 19, 2018Observed: 3037 cfs at 5:00AM Apr 19, 2018Observed: 3037 cfs at 5:15AM Apr 19, 2018Observed: 3059 cfs at 5:30AM Apr 19, 2018Observed: 3048 cfs at 5:45AM Apr 19, 2018Observed: 3048 cfs at 6:00AM Apr 19, 2018Observed: 3027 cfs at 6:15AM Apr 19, 2018Observed: 3048 cfs at 6:30AM Apr 19, 2018Observed: 3016 cfs at 6:45AM Apr 19, 2018Observed: 3016 cfs at 7:00AM Apr 19, 2018Observed: 3016 cfs at 7:15AM Apr 19, 2018Observed: 3037 cfs at 7:30AM Apr 19, 2018Observed: 2995 cfs at 7:45AM Apr 19, 2018Observed: 3027 cfs at 8:00AM Apr 19, 2018Observed: 3059 cfs at 8:15AM Apr 19, 2018Observed: 3048 cfs at 8:30AM Apr 19, 2018Observed: 3037 cfs at 8:45AM Apr 19, 2018Highest Forecast: 3414.62 cfs 12:00PM Apr 19, 2018Forecast: 3414.23 cfs 6:00PM Apr 19, 2018Forecast: 3400.89 cfs 12:00AM Apr 20, 2018Forecast: 3400.5 cfs 6:00AM Apr 20, 2018Forecast: 3400.11 cfs 12:00PM Apr 20, 2018Forecast: 3399.72 cfs 6:00PM Apr 20, 2018Forecast: 3386.38 cfs 12:00AM Apr 21, 2018Forecast: 3385.99 cfs 6:00AM Apr 21, 2018Forecast: 3385.6 cfs 12:00PM Apr 21, 2018Forecast: 3385.21 cfs 6:00PM Apr 21, 2018Forecast: 3371.86 cfs 12:00AM Apr 22, 2018Forecast: 3371.47 cfs 6:00AM Apr 22, 2018Forecast: 3371.08 cfs 12:00PM Apr 22, 2018Forecast: 3370.69 cfs 6:00PM Apr 22, 2018Forecast: 3357.35 cfs 12:00AM Apr 23, 2018Forecast: 3356.96 cfs 6:00AM Apr 23, 2018Forecast: 3356.57 cfs 12:00PM Apr 23, 2018Forecast: 3356.18 cfs 6:00PM Apr 23, 2018Forecast: 3342.85 cfs 12:00AM Apr 24, 2018Forecast: 3342.46 cfs 6:00AM Apr 24, 2018Forecast: 3342.07 cfs 12:00PM Apr 24, 2018Forecast: 3341.68 cfs 6:00PM Apr 24, 2018Forecast: 3328.34 cfs 12:00AM Apr 25, 2018Forecast: 3327.95 cfs 6:00AM Apr 25, 2018Forecast: 3327.56 cfs 12:00PM Apr 25, 2018Forecast: 3327.17 cfs 6:00PM Apr 25, 2018Forecast: 3313.83 cfs 12:00AM Apr 26, 2018Forecast: 3313.44 cfs 6:00AM Apr 26, 2018EAGI1(plotting QRIRZ) Graph Created (9:30AM Apr 19, 2018)ObservedForecast (issued 6:47PM Apr 18)Latest observed value: 3037 cfs at 8:45 AM MDT 19-Apr-2018. Flood Flow is 7 kcfs
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About this graph
Tabular Data (UTC)
Tabular Data (MDT)
XML Data
RSS Files
Datum: Not Available
Metadata
Reliability of the Forecast: Based on current and forecast river, weather and reservoir conditions

NOTE: Forecasts for the Boise River at Eagle Island are issued routinely year-round.

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Upstream Locations Upstream Gauge Downstream Gauge Downstream Locations
Flood Categories (in KCFS)
Major Flood Flow: 15
Moderate Flood Flow: 11
Flood Flow: 7
Action Flow: 6.5
Low Stage (in feet): -9999

Historic Crests
(1) 9,840 cfs on 06/13/1983
(2) 8,350 cfs on 05/31/1998
(3) 8,310 cfs on 05/05/2012
(4) 8,030 cfs on 06/07/1986
(5) 7,630 cfs on 06/29/1982
(6) 7,564 cfs on 06/06/1983
(7) 7,440 cfs on 04/30/2006
(8) 7,300 cfs on 03/27/1997
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 2,040 cfs on 04/09/2014
(2) 1,520 cfs on 05/21/2013
(3) 8,310 cfs on 05/05/2012
(4) 7,230 cfs on 05/18/2011
(5) 6,180 cfs on 06/11/2010
(6) 6,320 cfs on 06/07/2009
(7) 7,270 cfs on 05/20/2008
(8) 7,440 cfs on 04/30/2006
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 4.43 ft on 10/05/1989
(2) 4.43 ft on 10/26/1983
(3) 4.43 ft on 10/18/1990
Show More Low Water Records
Zoom Level:15
KML Image
Gauge LocationGauge Map Marker
Disclaimer
Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.
Flood Impacts & Photos Collapse
If you notice any errors in the below information, please contact our Webmaster
16000 Or 13.8 feet, 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 Or 13.0 feet, 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 Or 12.5 feet, 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.
9500 Or 11.9 feet, flooding of low areas near the river in Boise, Garden City, Eagle, Star, and Caldwell will occur. Debris in the river will collect on bridges crossing the river. The water may affect some residential property near the river, but should stay below the level of most residential structures.
8900 Or 11.5 feet, large sections of the green belt will be submerged and severe bank erosion will occur. Flooding will occur in low areas close to the river in Boise, Garden City, Eagle and Caldwell, but the water should remain below the level of most residential areas.
8500 Or 11.2 feet, large sections of the green belt will be submerged and severe bank erosion will occur. Flooding will occur in low areas close to the river in Boise, Garden City, Eagle and Caldwell, but the water should remain below the level of most residential areas. Water will begin seeping into the Garden City warehouse district between 45th and 47th streets.
8200 Or 11.0 feet, large sections of the green belt will be submerged and severe bank erosion will occur. Flooding will occur in low areas close to the river in Boise, Garden City, Eagle and Caldwell, but the water should remain below the level of most residential areas. Water will begin seeping into the Garden City warehouse district between 45th and 47th streets.
7000 Or 10.3 feet, large sections of the greenbelt path adjacent to the river will be submerged. Erosion of river banks will also become a significant problem. Debris in the river including small trees and logs may begin piling up at bridge crossings. Minor flooding will be observed on sections of Eagle Island and in other low spots near the river. Minor flooding will spread downstream to low areas near the river in Star and Caldwell.
6500 Or 10.0 feet, large sections of the greenbelt path adjacent to the river will be submerged. Minor flooding may affect portions of Eagle Island.
4000 Or 8.2 feet, water will begin seeping onto low spots on the greenbelt path next to the river especially near bridge underpasses.
About This Location Collapse

Latitude: 43.670278° N, Longitude: 116.307500° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS flow Not Available Not Available Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)
Elevation
(gauge height = flood stage)
Elevation information source
NAVD88 Not Available Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 Not Available Not Available Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other Not Available Not Available  
Additional Information Collapse
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.
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Hydrologic Resources Additional Resources
Collaborative Agencies Collapse
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.
NWS Information
National Weather Service
Boise Weather Forecast Office
NIFC Building 3807
Boise, ID 83705-5354
(208) 334-9860
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Page last modified: 21-Dec-2016 5:19 PM
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