California Counties and Islands:name (code) Modoc (MOD), Shasta (SHA), Siskiyou (SIS), Trinity (TRI)
Quads:name (DWR code) USGS code Reading Peak (625B) 4012144, Lassen Peak (626A) 4012145, West Prospect Peak (643C) 4012154, Thousand Lakes Valley (644A) 4012165, Manzanita Lake (644D) 4012155, Warren Peak (690B) 4112042, Rainbow Mtn. (697B) 4112148, Mount Eddy (699C) 4112234, City of Mount Shasta (699D) 4112233, China Mtn. (700A) 4112245, Scott Mountain (700C) 4112236, South China Mtn. (700D) 4112235, Davis Creek (708A) 4112063
Definitions of codes preceding a county and/or quad:
Uncertain about distribution or identity
Uncertain about distribution, but presumed extirpated if once present
Occurrence confirmed, but possibly extirpated
Species may be present in other areas where conditions are favorable.
This data should NOT be substituted for pre-project review or for on-site surveys.
Quad data is not available for all List 3 and 4 plants. For those that do contain this data, it has not been quality controlled and is potentially incomplete, inaccurate, and/or out of date. Please use caution when referencing this information. We are currently working hard to maintain this data and hope to provide accurate and up to date information in the near future.