1 ► Idaho, Ada County, Boise — 376 — Arrowrock Dam —

On State Highway 21 at milepost 17,, 0.2 miles south of Arrowrock Road, on the right when traveling north.

2 ► Idaho, Ada County, Boise — Diversion Dam —

On State Highway 21 at East Warm Springs Avenue, on the right when traveling east on State Highway 21.

3 ► Idaho, Ada County, Boise — McClelland Ferry —

On South Capitol Boulevard near Julia Davis Drive, on the right when traveling north.

4 ► Idaho, Ada County, Boise — Warm Springs Avenue —

On East Warm Springs Avenue at North Straughan Avenue, on the right when traveling west on East Warm Springs Avenue.

5 ► Idaho, Bannock County, Downey — 171 — Red Rock Pass —

On U.S. 91 at milepost 30.2 near South Old Oxford Highway, on the right when traveling north.

6 ► Idaho, Bannock County, McCammon — Location, location, location.... —

On Business Interstate 15 near Center Street, on the right when traveling south.

7 ► Idaho, Bannock County, Pocatello — Pocatello's Name in WWII — Chief Pocatello Monument —

On South 5th Avenue at South 4th Avenue (U.S. 30), on the left when traveling north on South 5th Avenue.

8 ► Idaho, Benewah County, Saint Maries — Splash Dam at Hobo Creek —

On North 23rd Street (State Highway 5) at North 23rd Street, on the right when traveling west on North 23rd Street.

9 ► Idaho, Benewah County, St. Maries — St. Maries - Steaming with History —

On Main Avenue near North Sixth Street (State Highway 5), on the right when traveling east.

10 ► Idaho, Blaine County, Bellevue — 413 — Magic Reservoir —

On U.S. 20 at milepost 170 near Rock Creek Road, on the left when traveling west.

11 ► Idaho, Boise County, Garden Valley — The Impounded Payette —

On Banks Lowman Road (County Highway 17) near Annie Lane, on the left when traveling west.

12 ► Idaho, Bonner County, Hope — Glacial Ice Dam — Filled This Basin as Far as You Can See — Glaciers moved south from Canada spreading across the lake and rivers —

On State Highway 200, on the right when traveling south.

13 ► Idaho, Bonner County, Hope — Glacial Lake Missoula — and the floods that shaped the Northwest —

On State Highway 200, on the right when traveling south.

14 ► Idaho, Bonner County, Hope — 320 — Lake Pend Oreille —

On State Highway 200, on the right when traveling south.

15 ► Idaho, Bonner County, Oldtown — Albeni Falls —

Near U.S. 2, 3 miles east of Le Clerc Road, on the right when traveling east.

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16 ► Idaho, Bonner County, Oldtown — Albeni Falls Dam at a Glance —

Near U.S. 2 at Le Clerc Road, on the right when traveling east.

17 ► Idaho, Bonneville County, Idaho Falls — 228 — Upper Snake River Valley Irrigation —

On Memorial Drive at Riverside Drive, on the left when traveling north on Memorial Drive.

18 ► Idaho, Boundary County, Bonners Ferry — 165 — Bonner's Ferry —

On Chinook Street at U.S. 95, on the right when traveling east on Chinook Street.

19 ► Idaho, Boundary County, Bonners Ferry — Crossing the Kootenai —

On Main Street near U.S. 95, on the left when traveling west.

20 ► Idaho, Boundary County, Bonners Ferry — Electrifying Bonners Ferry —

On Riverside Drive near Main Street, on the right when traveling west.

21 ► Idaho, Boundary County, Bonners Ferry — Moyie River Canyon —

On U.S. 2, 0.4 miles south of Old US Highway 2, on the right when traveling south.

22 ► Idaho, Boundary County, Bonners Ferry — Pelton Wheel —

On Riverside Street (U.S. 2) at Riverside Street, on the left when traveling east on Riverside Street.

23 ► Idaho, Boundary County, Bonners Ferry — Solving Power Problems —

On Riverside Drive near Main Street.

24 ► Idaho, Butte County, Arco — Mk 14 Torpedo —

On S. Front Street (U.S. 26) at HWY Drive, on the right when traveling west on S. Front Street.

25 ► Idaho, Butte County, Arco — USS Hawkbill (SSN-666) —

On S. Front Street (U.S. 26) near HWY Drive, on the right when traveling west.

26 ► Idaho, Canyon County, Caldwell — Lake Lowell — Bureau of Reclamation — Lower Embankment —

On Riverside Road, on the right when traveling north.

27 ► Idaho, Canyon County, Melba — Guffey Bridge Snake River Idaho —

Near Sinker Road.

28 ► Idaho, Caribou County, Grace — Last Chance Canal —

On Last Chance Lane, 1.3 miles west of State Highway 34, on the right when traveling west.

29 ► Idaho, Caribou County, Grace — 219 — Last Chance Canal Co. Ltd. —

On Main Street (State Highway 34) near 2nd Street North, on the left when traveling south.

30 ► Idaho, Caribou County, Soda Springs — "It Roars Like a Mad Dragon" — S.E. Matthews, Soda Springs Geyer Corporation, December 1937 —

Near East 1st Street South near South Main Street.

31 ► Idaho, Cassia County, Burley — 208 — Milner Dam —

On U.S. 30 at milepost 250,, 0.2 miles east of S 800 W, on the left when traveling east.

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32 ► Idaho, Cassia County, Burley — 28 — Starrh's Ferry —

On U.S. 30 at milepost 253,, 0.2 miles east of West 7 South, on the left when traveling east.

33 ► Idaho, Cassia County, Burley — 75 — Starrh's Ferry —

On U.S. 30 at milepost 253 near South 300 West, on the left when traveling west.

34 ► Idaho, Clearwater County, Ahsahka — Dworshak Dam — Dedicated June, 1973 —

On Viewpoint Road near Old Ashahka Grade Road, on the right when traveling east.

35 ► Idaho, Clearwater County, Lenore — 250 — Slaterville — Served as the steamboat port for the Clearwater Gold Rush — which followed mineral discoveries at Pierce in 1860 —

On U.S. 12, 0.6 miles west of Lenore Grade, on the right.

36 ► Idaho, Clearwater County, Orofino — Canoe Building Site —

Near U.S. 12 at 140th Street, on the right when traveling west.

37 ► Idaho, Clearwater County, Orofino — Canoe Camp —

Near U.S. 12 at 140th Street, on the right when traveling west.

38 ► Idaho, Clearwater County, Orofino — Clearwater River Log Drives —

Near U.S. 12 near Bobbit Bench Grade, on the left when traveling east.

39 ► Idaho, Clearwater County, Orofino — 249 — Lewis and Clark — On their way West, in 1805 — Lewis and Clark descended into Clearwater Canyon on an old Indian trail across from here —

On U.S. 12, 3 miles south of Michigan Avenue, on the right when traveling west.

40 ► Idaho, Clearwater County, Orofino — Navigating the Clearwater —

Near U.S. 12 near Bobbit Bench Grade, on the left when traveling east.

41 ► Idaho, Clearwater County, Orofino — River Crossing Over Time —

Near Riverside Avenue near Dent Bridge Road / Brown Avenue, on the left when traveling north.

42 ► Idaho, Clearwater County, Orofino — Routes Through the Region —

Near Riverside Avenue near Dent Bridge Road / Brown Avenue, on the left when traveling north.

43 ► Idaho, Clearwater County, Orofino — Welcome to Canoe Camp —

Near U.S. 12 at 140th Street, on the right when traveling west.

44 ► Idaho, Custer County, Stanley — In the Early Days —

Near State Highway 75 at Yankee Fork Road, on the left when traveling west.

45 ► Idaho, Custer County, Stanley — River Recreation —

Near State Highway 75 at Yankee Fork Road, on the left when traveling west.

46 ► Idaho, Custer County, Stanley — Sunbeam Dam —

Near State Highway 75 at Yankee Fork Road, on the left when traveling west.

47 ► Idaho, Elmore County, Glenns Ferry — Glenn's Ferry —

On South Commerical Street at West Madison Avenue, on the left when traveling south on South Commerical Street.

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48 ► Idaho, Elmore County, Glenns Ferry — Rosevear's Ferry —

On South Commercial Street at West Madison Avenue, on the left when traveling south on South Commercial Street.

49 ► Idaho, Elmore County, Mountain Home — 2005 — Mountain Home Irrigation District —

Near American Legion Boulevard (State Highway 51) near East 8th Street North, on the left when traveling west.

50 ► Idaho, Franklin County, Preston — 432 — Old Delta Sediments —

On U.S. 36 at milepost 12.9 at North Sage Ridge Road, on the right when traveling north on U.S. 36.

51 ► Idaho, Franklin County, Preston — 236 — Pioneer Ferry and Bridge —

On State Highway 91, on the left when traveling north.

52 ► Idaho, Gem County, Emmett — 377 — Black Canyon Dam —

Near Black Canyon Highway (State Highway 52 at milepost 38), 0.2 miles east of Old Dam Road.

53 ► Idaho, Idaho County, Lucile — 175 — Hydraulic Mining —

On U.S. 95, 0.4 miles south of McKinley Mine Road, on the left when traveling north.

54 ► Idaho, Idaho County, Riggins — More Valuable Than Gold — Riggins' Water Supply — Salmon River Heritage Waking Tour —

On Main Street (U.S. 95) near Well Street, on the right when traveling north.

55 ► Idaho, Idaho County, Riggins — The Scow — Captain Guleke’s Whitewater Raft — Salmon River Heritage Waking Tour —

On North Main Street (U.S. 95) near North Dixon Street, on the right when traveling north.

56 ► Idaho, Idaho County, White Bird — 298 — Salmon River —

On U.S. 95 at Old White Bird Hill Road, on the right when traveling north on U.S. 95.

57 ► Idaho, Idaho County, White Bird — 313 — Salmon River Canyon — Some 15 million years ago, Salmon River ran across great Miocene lava flows — above here and started to carve this deep canyon —

On U.S. 95, 1 mile south of Slate Creek Road, on the left when traveling north.

58 ► Idaho, Jefferson County, Rigby — 528 — The Holt Ferry —

On North 5050 East near Heise Road, on the right when traveling north.

59 ► Idaho, Jefferson County, Ririe — 453 — The Great Feeder —

On Main Street near Smith Street, on the right when traveling north.

60 ► Idaho, Kootenai County, Cataldo — Dug-Out Canoe — An Eight Week Building Project —

On South Mission Road near U.S. 90.

61 ► Idaho, Kootenai County, Cataldo — Mission Landing — Steamboat Transfer Point —

Near South Mission Road near Interstate 90.

62 ► Idaho, Kootenai County, Cataldo — Old River Channel —

Near South Mission Road near Interstate 90.

63 ► Idaho, Kootenai County, Coeur d'Alene — 170 — Coeur d'Alene Lake —

On State Highway 97 at milepost 96 near East Wolf Lodge Bay Road, on the left when traveling north.

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64 ► Idaho, Kootenai County, Coeur d'Alene — 268 — Lake Steamers —

On East Coeur d'Alene Lake Drive near South Silver Beach Road.

65 ► Idaho, Lemhi County, Salmon (Elk Bend) — 507 — Idaho Hermits —

On U.S. 93 near Elk Horn Road, on the right when traveling south.

66 ► Idaho, Lemhi County, Tendoy — A Communication Across the Continent by Water — “. . . this I can scarcely hope . . .” —

Near Warm Springs Road (Forest Road 185) near Forest Road 158 when traveling south.

67 ► Idaho, Lewis County, Greer — 466 — Gold Rush Ferry —

On U.S. 12, 1.5 miles south of State Highway 11, on the right when traveling west.

68 ► Idaho, Lincoln County, Shoshone — 398 — Magic Dam —

On State Highway 75, 0.9 miles south of West Magic Road, on the right when traveling north.

69 ► Idaho, Madison County, Rexburg — 70 — North Fork Ferry —

On State Highway 33 at Plano Road, on the right when traveling east on State Highway 33.

70 ► Idaho, Minidoka County, Acequia — 341 — Minidoka Dam —

On State Highway 24 at milepost 10 at North 374 Lane East, on the right when traveling east on State Highway 24.

71 ► Idaho, Minidoka County, Rupert — 372 — Montgomery Ferry —

On East Baseline Road near North 200 East, on the right when traveling east.

72 ► Idaho, Nez Perce County, Lapwai — Clearwater River — kú・s kayxkáyx —

Near Watson's Store Road near 403 Road, on the left when traveling east.

73 ► Idaho, Nez Perce County, Lapwai — Spalding’s Gristmill Canals —

Near Watson's Store Road near 403 Road, on the left when traveling east.

74 ► Idaho, Nez Perce County, Lewiston — 501 — 18th St. Bridge —

On Highway 12 at 5th Street, on the right when traveling west on Highway 12.

75 ► Idaho, Nez Perce County, Lewiston — A Confluence of Rivers & Steam —

On Snake River Avenue, 0.2 miles south of U.S. 12, on the right when traveling south.

76 ► Idaho, Nez Perce County, Lewiston — A Man and His Island Dream —

On Snake River Avenue, 0.2 miles south of U.S. 12, on the right when traveling south.

77 ► Idaho, Nez Perce County, Lewiston — 502 — John Silcott —

On U.S. 12 at 5th Street, on the right when traveling west on U.S. 12.

78 ► Idaho, Nez Perce County, Lewiston — Northwest Passage Scenic Byway —

On U.S. 12, 1 mile east of Nez Perce Road, on the right when traveling east.

79 ► Idaho, Nez Perce County, Lewiston — 418 — Steamboats —

On Old Spiral Highway at Beacon Drive, on the left when traveling west on Old Spiral Highway.

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80 ► Idaho, Nez Perce County, Lewiston — Traveling on the River —

On Snake River Avenue, 0.3 miles south of U.S. 12, on the right when traveling south.

81 ► Idaho, Nez Perce County, Lewiston — 495 — Tsceminicum — "Meeting of the Waters" —

On 1st Street at Capital Street, on the left when traveling north on 1st Street.

82 ► Idaho, Nez Perce County, Lewiston — Writings on the River —

On Snake River Avenue, 0.3 miles south of U.S. 12, on the right when traveling south.

83 ► Idaho, Owyhee County, Marsing — 283 — Froman's Ferry —

On State Highway 55 at milepost 3,, 0.1 miles east of River Front Drive, on the left when traveling west.

84 ► Idaho, Owyhee County, Melba — 194 — Steamer "Shoshone" —

On State Highway 45 at milepost 10,, 0.5 miles south of Ferry Road, on the right when traveling south.

85 ► Idaho, Payette County, Fruitland — 263 — Snake River —

On Interstate 84 at milepost 1,, 1.9 miles north of U.S. 95, on the right when traveling east.

86 ► Idaho, Power County, American Falls — 383 — American Falls Power Plants —

Near Aberdeen Highway (Highway 39 at milepost 3) at Lamb Weston Road, on the right when traveling north.

87 ► Idaho, Twin Falls County, Buhl — Buhl —

On East 4100 North (U.S. 30) near Kacy Meadows Lane, on the right when traveling west.

88 ► Idaho, Twin Falls County, Hagerman — 206 — Payne's Ferry —

On U.S. 30 at milepost 190,, 0.6 miles N 1000 E, on the right.

89 ► Idaho, Twin Falls County, Hansen — Rock Creek —

On Pumpland Road/3200 North at Stricker Cabin Road, on the right when traveling east on Pumpland Road/3200 North.

90 ► Idaho, Twin Falls County, Kimberly — History Through the Eyes of a Camera —

On Twin Falls Grade near 4050 North Road, on the right when traveling north.

91 ► Idaho, Twin Falls County, Rogerson — 240 — Salmon Dam —

On U.S. 93 at milepost 11 near 1900 East Road, on the right when traveling south.

92 ► Idaho, Twin Falls County, Twin Falls — Shoshone Falls — The History of Shoshone Falls Dam —

On Champlin Road (Route N3300E).

93 ► Idaho, Twin Falls County, Twin Falls — Shoshone Falls —

On Champlin Road near North 3339 East.

94 ► Idaho, Twin Falls County, Twin Falls — Shoshone Falls Project —

95 ► Idaho, Valley County, Smiths Ferry — 496 — Splash Dams —

On State Highway 55 at milepost 95,, 3.3 miles south of Smiths Ferry Drive, on the left when traveling south.

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