In terms of Water Volume: #1 Mississippi, #2 St. Lawrence, #3 Ohio, #4
Columbia, and #5 Yukon.
Maximum Depth Ranking (Deepest Point): #1 St. Lawrence (250'), #2 Hudson (216'), #3 Mississippi (200'), and #4 Ohio (167').
Where do the others fall? The longest western rivers are incredibly shallow by comparison. The Missouri River averages only 10 to 20 feet deep in many channels, and the Yukon River averages only about 30 to 60 feet deep.
Thread Replies (29)
In terms of Water Volume: #1 Mississippi, #2 St. Lawrence, #3 Ohio, #4
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-- VTVOICE
Jul 02, 2026 at 03:44 PM ET
VTVOICE
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07/02/26 03:44 PM ET
Yukon? Some of it in Canada so I don't know if that counts.**
-- vthhhi
Jul 02, 2026 at 01:31 PM ET
vthhhi
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07/02/26 01:31 PM ET
Oops--somebody already got that one.**
-- vthhhi
Jul 02, 2026 at 01:32 PM ET
vthhhi
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07/02/26 01:32 PM ET
not in the top 10**
-- HokieMacDaddy
Jul 02, 2026 at 01:19 PM ET
HokieMacDaddy
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07/02/26 01:19 PM ET
Rio Grande because it means BIG RIVER...**
-- UTPr0sim
Jul 02, 2026 at 12:33 PM ET
UTPr0sim
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07/02/26 12:33 PM ET
well big isn't the same as long (insert joke here) but yes, it's #4**
-- HokieMacDaddy
Jul 02, 2026 at 12:35 PM ET
HokieMacDaddy
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07/02/26 12:35 PM ET
correct - 3rd longest
-- HokieMacDaddy
Jul 02, 2026 at 12:34 PM ET
HokieMacDaddy
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07/02/26 12:34 PM ET
and that's just the US section, right?
-- `lag
Jul 02, 2026 at 12:53 PM ET
`lag
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07/02/26 12:53 PM ET
#6 - though not by much**
-- HokieMacDaddy
Jul 02, 2026 at 12:34 PM ET
HokieMacDaddy
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07/02/26 12:34 PM ET
Hmmm....my google and Wikipedia says it's #5
-- JoesterVT
Jul 02, 2026 at 12:58 PM ET
JoesterVT
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07/02/26 12:58 PM ET
fair point - my source says Wiki's #6 is #5
-- HokieMacDaddy
Jul 02, 2026 at 01:06 PM ET
HokieMacDaddy
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07/02/26 01:06 PM ET