| Specimen ID | 1697424 |
| Group | Crustaceans-Crayfish |
| Genus | Pacifastacus |
| Species | leniusculus |
| Common Name | Signal Crayfish |
| State | CA |
| County | Marin |
| Locality | Found at a series of natural cascades 3 to 7 meters high at Fern Creek, 900 meters from the confluence with Redwood Creek in the Muir Woods National Monument |
| Mapping Accuracy | Accurate |
| HUC8 Name | Tomales-Drake Bays |
| HUC8 Number | 18050005 |
| HUC10 Name | Drakes Bay-Frontal Pacific Ocean |
| HUC10 Number | 1805000505 |
| HUC12 Name | Redwood Creek-Frontal Pacific Ocean |
| HUC12 Number | 180500050506 |
| Map | |
| Collection Year | 1997 |
| Year Accuracy | Actual |
| Reference 1 |
| Ref. Number: | 28504 |
| Author: | Fong, D., and J.A. Howell. |
| Date: | 2006 |
| Title: | Distribution and abundance of California Giant Salamander (Dicamptodon ensatus) and Signal Crayfish (Pacifastacus leniusculus) in the Upper Redwood Creek Watershed, Marin County, California: USGS Open-File Report 2006-1066. |
| Publisher: | U.S. Geological Survey |
| Pages: | 45 |
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| Comments | Surveys were conducted from 1997 to 1998 |
| Record Type | Literature |
