Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
1441450
| CA | Lassen | 1.3 mi w of Pit River bridge (at Bieber, Pit River Overflow, Bridge 7-03); Pit River Overflow, Bridge 7-03 | 1971 |
18020002
| Upper Pit | established |
1442613
| CA | Lassen | About 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. | 2012 |
18020002
| Upper Pit | established |
1442766
| CA | Lassen | About 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. | 2012 |
18020002
| Upper Pit | established |
1442715
| CA | Lassen | In meadow, about 30 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber | 2008 |
18020002
| Upper Pit | established |
1442395
| CA | Modoc | Ash Creek State Wildlife Area, about 4 miles (air) west of Adin, about 8 miles (air) northeast of Bieber, Big Valley. | 2015 |
18020002
| Upper Pit | established |
1442829
| CA | Modoc | In the drying pond, north of the large culvert, east of the large levee, mountain meadow, in Big Valley, about 2.8 miles (air) north of the Headquarters at Ash Creek State Wildlife Area, about 5.4 miles (air) northeast of Bieber. | 2008 |
18020002
| Upper Pit | established |
1442608
| CA | Modoc | N side of Ash Creek Floodplain, 0.54 air miles SE of Pilot Butte parking area, 1.1 air miles S of County Road 87, 6.8 air miles W of Adin, Big Valley. | 2013 |
18020002
| Upper Pit | established |
1442790
| CA | Modoc | North edge of Ash Creek, south of the gravel pit, about 1/8 mile east of the parking area on the east side of Elkins Lane, Ash Creek State Wildlife Area, about 4 miles (air) west of Adin, about 8 miles (air) northeast of Bieber, Big Valley. | 2012 |
18020002
| Upper Pit | established |
1441581
| CA | Modoc | On muddy spit and shore of N Fork of Pit River 3.4 mi. N of Alturas where crossed by Highway 395. | 1969 |
18020002
| Upper Pit | established |
1441256
| CA | Modoc | several miles s of Alturas (Irrigation ditch by Jones' Lane, off Highway 395) | 1947 |
18020002
| Upper Pit | established |
1442696
| CA | Modoc | South of Ash Creek, Ash Creek State Wildlife Area, 0.79 mile (air) south of County Road 87, 1.73 miles (air) west of Adin, Big Valley. | 2016 |
18020002
| Upper Pit | established |