117° 116° 49° CANADA K 49° oo 15h Ecoregions of Idaho te n 15h a i R 10 Columbia Plateau 12 Snake River Plain 16 Idaho Batholith (continued) i v e 10f Dissected Loess Uplands 12aTreasure Valley 16e Glaciated Bitterroot Mountains and r 10hPalouse Hills 12bLava Fields Canyons 15m Bonners 10j Nez Perce Prairie 12cCamas Prairie 16f Foothill Shrublands–Grasslands Priest Ferry Lake 10l Lower Snake and Clearwater Canyons 12dDissected Plateaus and Teton Basin 16gHigh Glacial Drift-Filled Valleys 15y 15h 15 11 Blue Mountains 12eUpper Snake River Plain 16hHigh Idaho Batholith P 12f Semiarid Foothills 16i South Clearwater Forested r 15q i e 11dMelange 15 s t 12gEastern Snake River Basalt Plains Mountains R 11eWallowas/Seven Devils Mountains i v e 15h 15h Libby 12hMountain Home Uplands 16j Hot Dry Canyons r 11f Canyons and Dissected Highlands 15w Sandpoint 12i Magic Valley 16kSouthern Forested Mountains ille R. 11gCanyons and Dissected Uplands re 12j Unwooded Alkaline Foothills Pend O 11i Continental Zone Foothills 17 Middle Rockies 15u 11l Mesic Forest Zone 13 Central Basin and Range 17e Barren Mountains Lake 11mSubalpine–Alpine Zone Pend 13bShadscale-Dominated Saline 17hHigh Elevation Rockland Alpine 48° Oreille Basins Zone 48° 15s Level III ecoregion 13cSagebrush Basins and Slopes 17j West Yellowstone Plateau 15w Level IV ecoregion 13dWoodland- and Shrub-Covered 17l Gneissic–Schistose Forested Low Mountains Mountains County boundary 15o 13i Malad and Cache Valleys 17nCold Valleys Coeur d’Alene State boundary 15h 17oPartly Forested Mountains Spokane 15 Northern Rockies International boundary 17aaDry Intermontane Sagebrush Coeur 15f Grassy Potlatch Ridges d’Alene Valleys Lake Kellogg 115° 114° 15hHigh Northern Rockies 17abDry Gneissic–Schistose–Volcanic 15h 15i Clearwater Mountains and Breaks 15 Hills 15j Lower Clearwater Canyons 17adWestern Beaverhead Mountains 15h 15mKootenai Valley Saint St. Jo 15v e Riv 15nWeippe Prairie 10h Maries er 41 18 Wyoming Basin N 15oCoeur d’Alene Metasedimentary O 18c Wet Valleys T 15p G 15 Zone 18dSemiarid Bear Hills N I 15pSt. Joe Schist–Gneiss Zone H 47° S 15qPurcell–Cabinet–North Bitterroot 19 Wasatch and Uinta Mountains A 47 W 15h ° Mountains 19dWasatch Montane Zone 15h 15h Missoula 15sSpokane Valley Outwash Plains 19f Semiarid Foothills 15uInland Maritime Foothills and 80 Northern Basin and Range Moscow Valleys 80a Dissected High Lava Plateau 15f rk Clearwater River 10 Dworshak Fo 15vNorthern Idaho Hills and Low h 80bSemiarid Hills and Low Mountains Reservoir rt 15h No Relief Mountains 10h 80c High Elevation Forests and a 16b 17 15wWestern Selkirk Maritime Forest Cle rwate 15i Shrublands r River Orofino 15ySelkirk Mountains 10l 80e High Desert Wetlands 15j 15n Lewiston 15f er 16 Idaho Batholith 80f Owyhee Uplands and Canyons 10f iv R 16b sa 16bLochsa Uplands 80hSaltbush-Dominated Valleys ch 16h Lo 16h 16h 16c Lochsa–Selway–Clearwater 80i Sagebrush Steppe Valleys 10l Nezperce Canyons 80j Semiarid Uplands 16dDry, Partly Wooded Mountains 80kPartly Forested Mountains 11f 16c 10j 16e Selway River 46° 46° 11f 15 10 5 0 30 60 mi Grangeville 11g 16h S 30 20 10 0 60 120 km na ke 16 R Albers equal area projection 11 i 16i v e r 16h Standard parallels 43° N and 48° N 16h 113° 112° 111° on Rive 16i Riggins lm r Sa 16j 17ad Hells Canyon NRA 11e r e v 16h i R r e 16h n iv o R m l n Salmon Dillon a 16h o S 11m m l 16h 11l k F a S 16k h 16h t k u r o 45° 11e S o 45° F 17 11f e 16g l d 11i d i M McCall Camas C r r e v 16g i 11d R L n em o 17h h 16h m i l R 17e a iv Cascade 16h S e 11d r Reservoir P a h 16h 16h s 17l im 16k e ro MON Challis i TANA 17e 11i R iv 17e 17aa 17e e 17e r 12j 12f 17j Weiser 16g 16g 17ab Dubois Stanley 17e 12 16d 17e 17ab 16j iver 16h Fork 12j R s ry 17h 12g n 17e L e te i H 44° t 17h t 44° e t 17e l y e a L Saint P o 16h 17ab s Anthony Emmett t 12d R iv e 16k r 17h 12e Rexburg 12j Idaho Driggs City 17e Caldwell 16h 16h 16h Ketchum W 12a Rigby Y r O Boise e Arco M iv Nampa R I Bi st 17h N 16h 16d g Lo Idaho G N 12d O Falls 17n G Hailey E 12b R 16f O Craters of the 16f Moon NM 80f 12h 12c 12b 17 Fairfield 80c Murphy 12c 12f 12b Palisades 12f 12g 12g 17n Reservoir Blackfoot 80b Mountain 17o Home 12i American Falls Grays 43° 80k 12a Reservoir 12e Lake 43° (Dry) 80j Snake River 80c 12j Blackfoot Gooding Shoshone 17o 12i Pocatello Reservoir 12b 80c 80i 80 12i American 80c Soda 80j Falls Springs 80a Jerome 80c B Rupert r Shoshone Lake u n Falls Walcott e 80c a Twin u Falls R Burley 80i 80c i 80i 80j v e r 80a 80i 19f 80c Owy Montpelier hee R ive 80c 80h 80c r 80i 18d 80c 18c 80b 80b 13i 19d 80e 80b Malad 80c City 80i 13i 80c Bear 80j 80i 13c 18d 80a 13b 13d Preston Lake 42° 80j 13b 42° NEVADA UTAH 80 80 13 19 18 117° 116° 115° 114° 113° 112° INTERIOR—G EOLOG ICAL S U RVEY, RES TON, VIRG INIA—2002 111°.