Stream Gages

IDWR maintains a series of gages in the Upper Salmon River Basin. These gages are used to monitor flows in the streams and rivers where water is being leased and to collect hydrologic data. Some are maintained through contracts with Idaho Power and Idaho Water Engineering. To download raw data for these gages, visit the Idaho Power website and the IWE website. Permanent and temporary USGS gaging stations in the basin are also used in monitoring efforts. Several gages are maintained by IDWR staff.


Stream Gage Graphs and Data

Status Location Graph Raw Data Map
Active Agency Creek Graph Raw Data Map
Active Bayhorse Creek Graph Raw Data Map
Active Beaver Creek Graph Raw Data Map
Active Big Eightmile Creek, Lower Graph Raw Data Map
Active Big Eightmile Creek, Upper Graph Raw Data Map
Active Big Springs Creek, Lemhi Lower Graph Raw Data Map
Active Big Springs Creek, Lemhi Upper Graph Raw Data Map
Active Big Timber Creek, Lower Graph Raw Data Map
Active Big Timber Creek, Upper Graph Raw Data Map
Active Bohannon Creek, Lower Graph Raw Data Map
Active Bohannon Creek, Upper Graph Raw Data Map
Active Canyon Creek Graph Raw Data Map
Active Carmen Creek, Lower Graph Raw Data Map
Active Carmen Creek, Upper Graph Raw Data Map
Active Challis Creek, Lower Graph Raw Data Map
Active Challis Creek, Upper Graph Raw Data Map
Active East Fork Salmon River Graph Raw Data Map
Active Eighteenmile (Hawley) Creek Graph Raw Data Map
Active Fourth of July Creek Graph Raw Data Map
Active Hawley Creek Graph Raw Data Map
Active Hayden Creek Graph Raw Data Map
Active Iron Creek Graph Raw Data Map
Active Kenney Creek Graph Raw Data Map
Active Lee Creek Graph Raw Data Map
Active Lemhi River above L-63 Graph Raw Data Map
Active Lemhi River above Big Springs Graph Raw Data Map
Active Lemhi River at Cottom Lane Graph Raw Data Map
Active Lemhi River at L-1 Graph Raw Data Map
Active Lemhi River at McFarland Campground Graph Raw Data Map
Active Little Springs, Lower Graph Raw Data Map
Active Little Springs, Upper Graph Raw Data Map
Active Morgan Creek Graph Raw Data Map
Active Pahsimeroi River at Furey Lane Graph Raw Data Map
Active Pahsimeroi River below P-9 Graph Raw Data Map
Active Patterson/Big Springs Creek, Upper Graph Raw Data Map
Active Pole Creek Graph Raw Data Map
Active Texas Creek Graph Raw Data Map
Discontinued Alturas Lake Creek Graph Raw Data Map
Discontinued Big Hat Creek Graph Map
Discontinued Eighteenmile Creek Mouth Graph Map
Discontinued Falls Creek Graph Map
Discontinued Garden Creek Graph Map
Discontinued Herd Creek Graph Map
Discontinued Lemhi River at Baker Graph Map
Discontinued Lemhi River at Hayden Creek Graph Map
Discontinued Little Morgan Creek Graph Map
Discontinued North Fork Salmon River Graph Map
Discontinued Patterson/Big Springs Creek, Lower Graph Map
Discontinued Salmon River at Obsidian Graph Map
Discontinued Salmon River near Stanley Graph Map

Stream Gage Map

Contact Information

For more information on IDWR Stream Gaging, please contact:


Idaho Water Resource Board
322 East Front Street
PO Box 83720
Boise, ID 83720-0098
Phone: (208) 287-4800
Fax: (208) 287-6700