The arrival at the confluence of the Snake (Kimooenem) and Clearwater (Kooskooske) rivers marks one of the most significant geographic moments of the descent toward the Pacific. The three surviving accounts from October 10, 1805 — by William Clark, Patrick Gass, and John Ordway — offer a striking demonstration of how rank, role, and physical condition shaped the expedition’s documentary record. Clark writes as cartographer and ethnographer; Gass writes as a stricken sergeant; Ordway writes as a working boatman fixated on weather and wildlife.
Clark’s Ethnographic and Geographic Survey
Clark’s entry dwarfs the others in length and ambition. Where his sergeants log the day’s mileage and mishaps, Clark constructs a regional gazetteer. He names the southern fork “Lewis’s River,” tallies fishing stations along its tributaries, and reports intelligence gathered from Nez Perce informants about a chief upstream who “has more horses than he can Count.” His description of the waters at the junction is precise and painterly:
the water of the South fork-is a greenish blue, the north as clear as cristial
Clark also captures a domestic detail neither sergeant records — “an Indian batheing in a hot bath made by hot Stones thrown into a pon of water” — and pauses at the “ragid rapid” to take a meridian altitude of the sun. His entry is the only one to record the latitude observation, the names of the Cho-pun-nish (Nez Perce) fishing places, and the visit of an Indian “from the falls” who claimed to have seen white people downriver. This is the entry of a man producing the official record.
Gass and Ordway: Sergeants in Different Modes
Patrick Gass condenses the same day into a few sentences, and the contraction is partly explained by his physical state. Where Clark hour-by-hours the rapids, Gass reports flatly:
Yesterday evening I had a fit of the ague, and have been very unwell to day; so much so that I am unable to steer my canoe.
This is a personal disclosure Clark does not make on his behalf. Gass does, however, preserve both Indigenous river names — “Koos-koos-ke” for the eastern branch and “Ki-mo-ee-nem” for the western — in a paired form cleaner than Clark’s prose offers. He also notes the “goslin-green colour” of the southwest branch, an image that rhymes with Clark’s “greenish blue” and confirms that both men were struck by the same chromatic contrast at the forks. Gass’s mileage figure — “We came 20 miles to day” — is the kind of summary metric his published journal habitually supplies where Clark’s field notes do not.
John Ordway, meanwhile, seems almost to be describing a different river. His entry is dominated by weather and fauna:
rainy morning, the waves not So high as yesterdy… we Saw porpises in the River. Saw a number of Sea otter, Sea gulls, ducks &C.
The “porpises” and “Sea otter” are almost certainly misidentifications — the party was still hundreds of river miles from tidewater — but the report illustrates how expectantly the men were scanning for signs of the Pacific. Ordway alone records that the wind forced the canoes to retreat: they “obledged us to turn back from a point of rocks and roe about 2 miles back into a cove,” unload, wait, reload, and finally camp at a “Spring run” with “scarsely room for to camp.” Neither Clark nor Gass mentions this reversal in such operational detail. Ordway is writing from the level of the paddle.
Cross-Narrator Patterns
Three patterns emerge. First, register: Clark assembles geography and ethnography; Gass abstracts to mileage and personal health; Ordway narrates the labor of moving boats. Second, convergence on color — both Clark and Gass independently note the green tint of the southern fork, suggesting it was a topic of camp conversation. Third, divergence on the day’s central difficulty: Clark frames the canoe stuck on a rock at the “ragid rapid” as a one-hour delay neatly resolved, while Gass reports a leaking canoe and wet cargo requiring a halt to dry, and Ordway records a wind-driven retreat that is absent from both other accounts. Read together, the three entries reconstruct a fuller October 10 than any one of them preserves alone — a day of rapids, illness, wind, and the meeting of two great rivers whose confluence the captains were the first Anglo-Americans to chart.
