| Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
|
1441161
| CA | Modoc | 1 mi nw, at headwaters N Fk of Pit R., on dirt rd leading to s end Goose Lake Highway 395; North Fork Pit River | 1947 |
18020002
| Upper Pit | established |
|
1439618
| CA | Modoc | at headwaters of North Fork of Pit River, one mile northwest of Highway 395, on dirt road leading to south end of Goose Lake. | 1947 |
18020002
| Upper Pit | established |
|
1441515
| CA | Modoc | in Southern Pacific right-of-way near East Canal (s of Alturas); Pit Valley, Williams ranch | 1947 |
18020002
| Upper Pit | established |
|
1441398
| CA | San Diego | Escondido. | 1947 |
18070303
| San Luis Rey-Escondido | established |
|
213461
| GA | Clay | Fort Gaines, in spring run near railroad terminal. | 1947 |
03130004
| Lower Chattahoochee | established |
|
1692442
| IL | Tazewell | Rte 116 between East Peoria and Spring Bay Rd. | 1947 |
07130001
| Lower Illinois-Senachwine Lake | unknown |
|
234280
| MD | Frederick | Hood College Campus | 1947 |
02070009
| Monocacy | established |
|
234362
| MD | Prince George's | College Park, along stream | 1947 |
02070010
| Middle Potomac-Anacostia-Occoquan | established |
|
232924
| PA | Allegheny | Clinton area,N of Rt 30, 3.5 mi W of Clinton | 1947 |
05030101
| Upper Ohio | established |
|
1759833
| PA | Beaver | [No locality description provided] | 1947 |
05030101
| Upper Ohio | |
|
1759651
| PA | Mercer | [No locality description provided] | 1947 |
05030102
| Shenango | |
|
232925
| PA | Mercer | Mercer Park, 0.5 mi SW Mercer | 1947 |
05030102
| Shenango | established |