Idaho river crests
Highest NWS-recorded flood crests for 23 of 25 Idaho gauges on Flowcast whose NWS forecast point publishes crest history. Ordered by highest crest.
Updated Nov 5, 9:33 AM PST · USGS data, provisional
| River gauge | Highest NWS-recorded crest | Date | Crests shown |
|---|---|---|---|
| Coeur d'Alene River near Cataldo NWS CTLI1 | 58.23 ft 79,000 cfs | January 16, 1974 | 8 |
| Salmon River at White Bird NWS WHBI1 | 37.5 ft 120,000 cfs | June 1, 1894 | 8 |
| Clearwater River at Spalding NWS SPDI1 | 27.77 ft | February 5, 1963 | 8 |
| St. Joe River at Calder NWS CLDI1 | 18.2 ft 46,000 cfs | April 18, 1938 | 8 |
| Snake River near Irwin NWS PALI1 | 15.25 ft 41,800 cfs | June 20, 1997 | 8 |
| Boise River near Twin Springs NWS BTSI1 | 13.84 ft 15,200 cfs | April 27, 2012 | 8 |
| Lochsa River near Lowell NWS LOCI1 | 13.5 ft 35,100 cfs | June 8, 1964 | 8 |
| North Fork Payette River near Banks NWS BNKI1 | 13.5 ft 8,830 cfs | May 11, 1947 | 8 |
| Boise River at Glenwood Bridge, near Boise NWS BIGI1 | 11.93 ft 9,590 cfs | June 6, 2017 | 8 |
| Snake River at Neeley NWS AMFI1 | 11.46 ft 46,100 cfs | June 19, 1997 | 8 |
| Snake River near Heise NWS HEII1 | 11.26 ft 43,500 cfs | June 13, 1997 | 8 |
| Middle Fork Salmon River at Middle Fork Lodge, near Yellow Pine NWS MIDI1 | 10.8 ft 20,900 cfs | June 16, 1974 | 8 |
| South Fork Clearwater River at Stites NWS STII1 | 10.79 ft 19,500 cfs | April 9, 2019 | 8 |
| South Fork Boise River at Anderson Ranch Dam NWS ANDI1 | 10.61 ft 8,500 cfs | May 13, 2017 | 8 |
| Salmon River at Salmon NWS SMNI1 | 10.33 ft | February 7, 1985 | 8 |
| Silver Creek at Sportsman Access, near Picabo NWS PBOI1 | 9.36 ft 572 cfs | April 6, 2006 | 8 |
| Henrys Fork at St. Anthony NWS ANTI1 | 8.84 ft 14,000 cfs | June 8, 2011 | 8 |
| Big Wood River at Hailey (total flow) NWS HALI1 | 8.36 ft 6,270 cfs | May 7, 2017 | 8 |
| Lemhi River near Lemhi NWS LERI1 | 7.19 ft 2,430 cfs | June 21, 1984 | 8 |
| Teton River near St. Anthony NWS TEAI1 | 6.78 ft 6,360 cfs | June 11, 1997 | 8 |
| Henrys Fork near Ashton NWS HFAI1 | 6.5 ft 8,140 cfs | May 15, 1984 | 8 |
| Henrys Fork near Island Park NWS ISLI1 | 6.15 ft 2,770 cfs | April 26, 1946 | 8 |
| Teton River above South Leigh Creek, near Driggs NWS DGGI1 | 5.17 ft 2,460 cfs | July 10, 1983 | 8 |
Crest stages and dates are the National Weather Service's own (National Water Prediction Service gauge data), shown only for gauges whose NWS forecast point lists the same USGS gauge number. Stages are in feet on each point's own NWS datum. Crests NWS marks as an older datum, and preliminary crests, are left out; only official and record crests are listed. These describe flooding history, not fishing or boating safety; Flowcast's Fishable/Floatable status is never based on them. All states.
More Idaho lists
Data from the U.S. Geological Survey (USGS). Readings are provisional and subject to revision. Flowcast statuses are automated comparisons with each gauge's own history, not safety ratings or fishing reports. Check local conditions, weather, regulations and closures before you go. Rivers can change quickly.