As is my wont I wished to do a computer solution. My first obstacle was that the Wikipedia article List of rivers of the United States, was divided into links to subsets, either letters of the alphabet or states of the U.S. (you could follow links either way).
I first tried ParseHub, touted as a crawler for websites. But that worked horribly at understanding what I needed. HTTrack website copier worked much better, bringing me all the links from the main page, from which I could extract what I wanted via program.
I concatenated the files for letter A through that for XYZ into one file using a command prompt command COPY list* riversall.txt. I then used the SPFLite Editor to delete any lines that did not have <li> starting in column 1 or did not have title= at all.
After than I ran the following program to list all those cases where the first word after title= and a quote mark had no other vowel except A, as "River" or "Creek", etc. should not be counted as disqualifying.
Open "riversall.txt" For Input As #1
Do
Line Input #1, l$
ix = InStr(l, "title=" + Chr(34))
If ix > 0 Then
ix2 = InStr(ix + 7, l, Chr(34))
n$ = Mid(l, ix + 7, ix2 - ix - 7)
good = 1
ix = InStr(n, " ")
If ix > 0 Then
n2$ = Left(n, ix - 1)
Else
n2 = n
End If
For i = 1 To Len(n2)
If InStr("eiou", Mid(n2, i, 1)) > 0 Then good = 0: Exit For
Next
If good Then
Text1.Text = Text1.Text & n & crlf
End If
End If
DoEvents
Loop Until EOF(1)
Close 1
As you can see, the raw output included rivers with multi-word names where the second word might have non-allowed vowels, possibly even hidden by an abbreviated St. for Saint.:
Agawam River
Alabama River
Alagnak River
Alapaha River
Alatna River
Allagash River
Altamaha River
Anna River (Michigan)
Aransas River
Ararat River
Arkansas River
Atchafalaya River
Back River (Powwow River)
Bad River (South Dakota)
Bad River (Wisconsin)
Bad Axe River
Bald River
Bald Eagle Creek (West Branch Susquehanna River)
Bark River (Michigan)
Bark River (Lake Superior) (page does not exist)
Bark River (Rock River)
Bass River (Nantucket Sound)
Bass River (New Jersey)
Black River (Arkansas)
Black River (New Jersey)
Black River (New York)
Black River (North Carolina)
Black River (Ohio)
Black River (South Carolina)
Black River (Lake Memphremagog)
Black River (Connecticut River)
Black River (Chehalis River)
Black River (Duwamish River)
Black River (Wisconsin-Lake Michigan) (page does not exist)
Black River (Wisconsin)
Black River (Nemadji River) (page does not exist)
Black River (Wisconsin-Michigan)
Black Butte River
Black Fork (Cheat River)
Black Fork Mohican River
Black Lake Bayou
Black Mallard River
Black Warrior River
Blacks Fork
Blanchard River (Ohio)
Branch River (New Hampshire)
Branch River (Rhode Island)
Branch River (Wisconsin)
Brays Bayou
Byram River
Cahaba River
Carmans River
Carp River (Michigan)
Carr River
Cass River (Michigan)
Catawba River
Chakachatna River
Chandalar River
Chazy River
Clackamas River
Clam River (Wisconsin)
Clark Fork (river)
Clarks Fork Yellowstone River
Clarks River
Crystal River (Colorado)
Crystal River (Florida)
Crystal River (Michigan)
Crystal River (Wisconsin) (page does not exist)
Dan River
Dan Hole River
Days River
Dry Fork (Cheat River)
Dry Fork (Tug Fork)
Dry River (New Hampshire)
Dry Wolf Creek
Fall River (Kansas)
Falls River (Connecticut River)
Falls River (Michigan)
Fawn River (Michigan)
Flat River (Michigan)
Flat River (North Carolina)
Flat River (South Branch Pawtuxet River)
Flat River (Wood River)
Glady Fork
Grand River (Missouri)
Grand River (Ohio)
Grand River (Oklahoma)
Grand River (South Dakota)
Grand River (Wisconsin) (page does not exist)
Grand Calumet River
Grant River
Grass River (Michigan)
Gray Wolf River
Grays River (Washington)
Chazy River
Halls Stream
Ham Branch
Hamma Hamma River
Hassayampa River
Haw River
Hay River (Wisconsin)
Jacks Fork
Kalama River
Kanab Creek
Kanawha River
Kansas River
La Moine River
La Plata River (San Juan River)
Lac qui Parle River
Lackawanna River
Lamar River
Lampasas River
Lavaca River
Sandy River (South Carolina)
Mad River (California)
Mad River (Cold River)
Mad River (Cocheco River)
Mad River (Pemigewasset River)
Mad River (Ohio)
Mad River (Vermont)
Mad River (Washington)
Malad River (Gooding County, Idaho)
Malad River (Idaho-Utah)
Manhan River
Marys River (Illinois)
Marys River (Oregon)
Matanzas River
Matta River
Nantahala River
Napa River
Nash Stream
Park River (Connecticut)
Paw Paw River
Raft River
Rahway River
Salt River (Kentucky)
Sac River
Sacandaga River
St. Clair River
St. Croix River (Wisconsin–Minnesota)
St. Francis River (Minnesota)
St. Francis River
St. Johns River
St. Jones River
St. Joseph River (Lake Michigan)
St. Joseph River (Maumee River)
St. Lucie River
St. Marks River
St. Martin River
St. Mary River (Alberta–Montana)
St. Marys River (Florida–Georgia)
St. Marys River (Indiana and Ohio)
St. Marys River (Maryland)
St. Marys River (Michigan–Ontario)
St. Regis River (Montana)
St. Regis River
St. Vrain Creek
Salcha River
Salt Creek (Sangamon River tributary)
Salt Fork Arkansas River
Salt Fork Red River
Salt Fork Vermilion River
Salt Lick Creek (Susquehanna River)
Salt River (Arizona)
Salt River (Kentucky)
Salt River (Michigan)
Salt River (Wyoming)
San Antonio River
San Benito River
San Bernard River
San Diego River
San Francisco River
San Gabriel River (California)
San Gabriel River (Texas)
San Gorgonio River
San Jacinto River (California)
San Jacinto River (Texas)
San Joaquin River
San Juan River (Colorado River)
San Lorenzo River
San Luis Rey River
San Marcos River
San Miguel River (Colorado)
San Pedro River (Arizona)
San Rafael River
San Saba River
Sand Fork (Little Kanawha River)
Sand Hill River
Sand River (Wisconsin) (page does not exist)
Sandy Creek (Ohio)
Sandy Creek (Allegheny River)
Sandy Creek (Ohio River)
Sandy River (Oregon)
Sandy River (South Carolina)
Santa Ana River
Santa Clara River (California)
Santa Cruz River (Arizona)
Santa Fe River (Florida)
Santa Fe River (New Mexico)
Santa Margarita River
Santa Maria River (Arizona)
Santa Ynez River
Saranac River
Sassafras River
Savannah River
Saw Kill River
Saw Mill River
Shark River (Florida)
Shark River (New Jersey)
Shasta River
Slab Fork
Smyrna River
Styx River (Alabama)
Swan River (Colorado)
Swan River (northern Minnesota)
Swan River (Montana)
Swatara Creek
Sycan River
Tanana River
Tar River
Trask River
Tygart Creek
Tygart Valley River
Tygarts Creek
Waccamaw River
Waccasassa River
Walla Walla River
Warm Springs River
Watab River
Yachats River
Yahara River
Yampa River
Manually deleting the ineligible leaves:
Agawam River
Alabama River
Alagnak River
Alapaha River
Alatna River
Allagash River
Altamaha River
Anna River (Michigan)
Aransas River
Ararat River
Arkansas River
Atchafalaya River
Back River (Powwow River)
Bad River (South Dakota)
Bad River (Wisconsin)
Bald River
Bald Eagle Creek (West Branch Susquehanna River)
Bark River (Michigan)
Bark River (Lake Superior) (page does not exist)
Bark River (Rock River)
Bass River (Nantucket Sound)
Bass River (New Jersey)
Black River (Arkansas)
Black River (New Jersey)
Black River (New York)
Black River (North Carolina)
Black River (Ohio)
Black River (South Carolina)
Black River (Lake Memphremagog)
Black River (Connecticut River)
Black River (Chehalis River)
Black River (Duwamish River)
Black River (Wisconsin-Lake Michigan) (page does not exist)
Black River (Wisconsin)
Black River (Nemadji River) (page does not exist)
Black River (Wisconsin-Michigan)
Black Mallard River
Blacks Fork
Blanchard River (Ohio)
Branch River (New Hampshire)
Branch River (Rhode Island)
Branch River (Wisconsin)
Brays Bayou
Byram River ** left in, but Y is really a vowel here **
Cahaba River
Carmans River
Carp River (Michigan)
Carr River
Cass River (Michigan)
Catawba River
Chakachatna River
Chandalar River
Chazy River ** left in, but Y is really a vowel here **
Clackamas River
Clam River (Wisconsin)
Clark Fork (river)
Clarks Fork Yellowstone River
Clarks River
Crystal River (Colorado) ** left in, but Y is really a vowel here **
Crystal River (Florida) ** left in, but Y is really a vowel here **
Crystal River (Michigan) ** left in, but Y is really a vowel here **
Crystal River (Wisconsin) ** left in, but Y is really a vowel here **
Dan River
Days River
Dry River (New Hampshire) ** left in, but Y is really a vowel here **
Fall River (Kansas)
Falls River (Connecticut River)
Falls River (Michigan)
Fawn River (Michigan)
Flat River (Michigan)
Flat River (North Carolina)
Flat River (South Branch Pawtuxet River)
Flat River (Wood River)
Glady Fork ** left in, but Y is really a vowel here **
Grand River (Missouri)
Grand River (Ohio)
Grand River (Oklahoma)
Grand River (South Dakota)
Grand River (Wisconsin) (page does not exist)
Grand Calumet River
Grant River
Grass River (Michigan)
Gray Wolf River
Grays River (Washington)
Chazy River ** left in, but Y is really a vowel here **
Halls Stream
Ham Branch
Hamma Hamma River
Hassayampa River
Haw River
Hay River (Wisconsin)
Kalama River
Kanab Creek
Kanawha River
Kansas River
La Plata River (San Juan River)
Lackawanna River
Lamar River
Lampasas River
Lavaca River
Sandy River (South Carolina) ** left in, but Y is really a vowel here **
Mad River (California)
Mad River (Cold River)
Mad River (Cocheco River)
Mad River (Pemigewasset River)
Mad River (Ohio)
Mad River (Vermont)
Mad River (Washington)
Malad River (Gooding County, Idaho)
Malad River (Idaho-Utah)
Manhan River
Marys River (Illinois)
Marys River (Oregon)
Matanzas River
Matta River
Nantahala River
Napa River
Nash Stream
Park River (Connecticut)
Paw Paw River
Raft River
Rahway River
Salt River (Kentucky)
Sac River
Sacandaga River
Salcha River
Salt River (Arizona)
Salt River (Kentucky)
Salt River (Michigan)
Salt River (Wyoming)
San Saba River
Sand River (Wisconsin) (page does not exist)
Sandy Creek (Ohio) ** left in, but Y is really a vowel here **
Sandy Creek (Allegheny River) ** left in, but Y is really a vowel here **
Sandy Creek (Ohio River) ** left in, but Y is really a vowel here **
Sandy River (Oregon) ** left in, but Y is really a vowel here **
Sandy River (South Carolina) ** left in, but Y is really a vowel here **
Santa Ana River
Santa Clara River (California)
Saranac River
Sassafras River
Savannah River
Shark River (Florida)
Shark River (New Jersey)
Shasta River
Slab Fork
Smyrna River ** left in, but Y is really a vowel here **
Styx River (Alabama) ** left in, but Y is really a vowel here **
Swan River (Colorado)
Swan River (northern Minnesota)
Swan River (Montana)
Swatara Creek
Sycan River ** left in, but Y is really a vowel here **
Tanana River
Tar River
Trask River
Tygart Creek ** left in, but Y is really a vowel here **
Tygarts Creek ** left in, but Y is really a vowel here **
Waccamaw River
Waccasassa River
Walla Walla River
Watab River
Yachats River ** left in, but Y is really a vowel here **
Yahara River ** left in, but Y is really a vowel here **
Yampa River ** left in, but Y is really a vowel here **
Rivers in the U.S. -- computer findings
