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Olentangy River at Mount Air, 3 mi. SE of Powell, from sewage plant upstream 0.7 mi.

Mississippi River at US Rt. 18 bridge, in main channel, 1.5 mi. W of Prairie du Chien

Mississippi River, 1.2 mi. N of Bellevue, 1.8 mi. N of mouth of Spruce Creek

Big Darby Creek, Sycamore Riffle, 0.7 mi S of Georgesville, OEPA River Mile 33.2

Big Darby Creek at OH Rt. 104 bridge, [1.0 mi. S of Fox, 4.0 mi. NW of Circleville]

Mississippi River, E side main channel, 3.0 mi. SSW of Prairie du Chien

Tennessee River, [1.0 mi. W of Oak Grove, 3.7 mi. N of Savannah]

Stillwater River at Rt. 121 bridge, 3 mi. SW of Versailles

Crawfish River at Aztalan archaeological site, (47JE1), [0.6 mi. SSE of Aztalan, 4.8 mi. NW of Jefferson]

Muskingum River, 1.9 mi. SW of Coal Run, 5.6 mi. WNW of Lowell

Tennessee River, below Pickwick Dam

Fourche la Fave River at AR Rt. 28 bridge, 2 mi. E of Parks, 12 mi. SE of Waldron

Muskingum River, below Luke Chute Dam, [4.5 mi. WSW of Beverly]

Olentangy River at 2.2 mi. S of Powell Rd. bridge, 3.2 mi. SE of Powell

Little Muskingum River at access, 1.2 mi. SE of Mechanicsburg, 1.8 mi. S of Antioch

Walhonding River at Tonawanda, 2.5 mi. W of Warsaw, E of Nellie

Lake Erie at Monument Bay, South Bass Island

Stones River at Jefferson Springs Rd. bridge, 1 mi. N of Old Jefferson, 1 mi. below confluence of East & West Forks, ca. 4 mi. ENE of Smyrna

Ottawa River

Big Darby Creek at mouth of Hellbranch Run

Sabine River at Rt. 43 bridge, 10 mi. SW of Marshall

Tombigbee River at Columbus, [at US Rt. 82 bridge?]

Muskingum River, just below Luke Chute Dam, 4.5 mi. WSW of Beverly

Imi n'Takandout

St. Francis River, "from old shell heap below Marked Tree"

Olentangy River 200 yds. below Powell Rd. bridge, 1.6 mi. E of Powell, 9.9 mi. S of Delaware

Tennessee River at Smithsonia Landing, shell mound on N bank, opposite mouth of Mulberry Creek, 12 mi. W of Florence

Cahaba River at Co.Rt. 29 bridge, [8.2 mi. NW of Chelsea, 10.1 mi. NE of Helena]

Cahaba River, opposite mouth of Wells Creek, [3.3 mi. SSE of Sprott, 4.4 mi. E of Marion]

West Fork Choctawhatchee River at AL Rt. 105 bridge, [3.1 mi. E of Skipperville, 11.5 mi. NE of Ozark]

Ohio River, from Lock and Dam 52 (ca. 4 mi. below Paducah, KY) to Mound City, IL

Lake Whatcom

Walhonding River at [and below 1st] OH Rt. 715 bridge, [above Mohawk Dam], 2.4 mi. WNW of Nellie, 14.2 mi. WNW of Coshocton

Tombigbee River, just below mouth of Tibbee Creek, [approx. 4.5 mi. NW of Columbus, 8.7 mi. ENE of Mayhew]

Bourbeuse River at MO T bridge, about 7 mi S of Rosebud [0.11 mi S of Tea; 6.08 mi SE of Owensville]

Vermilion River at bridge, 2.3 mi. NE of Clarksfield, 2.5 mi. SSE of Wakeman

Big Darby Creek at OH Rt. 104 bridge, [1.0 mi.] S of Fox, [4.0 mi. NW of Circleville]

Glover River above OK Rt. 3/OK Rt. 7 bridge, 2 mi. N of Glover, 11 mi. NW of Broken Bow

Elk River, 0.5 mi. below mouth of King Shoals Run, 3 mi. NE of Queen Shoals, 20 mi. ENE of Charleston

Mississippi River below Clinton St. bridge, in old channel of Black River (R.Mi. 1.7), 2.6 mi. NNW of center of La Crosse

Mississippi River, [1.5-1.7 mi. WNW of Prairie du Chien], East Channel

Alabama River at US Rt. 80 bridge, [0.2 mi. SSE of center of Selma, 6.7 mi. NNE of Cahaba]

Muskingum River at Lowell, [9 mi. NW of Marietta]

Lake Erie at Fishery Bay, South Bass Island, 100-300 feet N of Oak Point, 0.4 mi. NW of Put-in-Bay

Alum Creek at "Meanders", at between mouth of Africa Run and Co.Rt. 109 bridge, 2.5 mi. ESE of Lewis Center, 9.8 mi. SE of Delaware

Scioto River, "7 mi. W of Delaware"

Red River, tributaries in the vicinity of Lake Texoma

Mississippi River above I-90 bridge, dredge spoils [3.3 mi. SE of Dresbach, 4.8 mi. SE of Dakota]

Lake Erie at East Harbor State Park

Specific locality unknown