Mapping
In addition to collaborating with Cal-IPC, the Los Angeles County WMA, and other regional WMA's on invasive plant mapping issues (e.g. standards, data sharing, methodology, etc), the Council for Watershed Health has two CDFA-funded mapping initiatives that it is currently engaged in. The first effort focuses on collecting a comprehensive suite of existing invasive plant datasets from other agencies, organizations, and residents for the Los Angeles Basin. While this information is being collected and compiled into one central database, we have an ongoing field mapping program to collect information within select pilot areas where no data is currently available. Field work in these select areas will target approx. 6-8 common highly invasive species within our region (including such plants as Arundo, tree of heaven, yellow star thistle, castor bean, pampas grass, periwinkle, and palms).

Our second initiative includes compiling all existing data for giant reed (Arundo donax) within the Southern California Wetlands Recovery Project territory (including the coastal watersheds of Los Angeles, Orange, Riverside, San Bernardino, San Diego, Santa Barbara, and Ventura counties). This effort is being worked in partnership with the Santa Margarita and San Luis Rey Watersheds WMA.



GIS Data*
Updated: April 22, 2010

A- Metadata
B- Data snapshot
C- Download data
A B C Data Description
Cal-IPC Invasive Plant Survey within
California Coastal Watersheds from Salinas
to Tijuana ( 9.3 File GDB)
- NOTE: Data is in DRAFT form for select areas
---(posted 4.20.10) (75MB)

Existing invasive plant data for coastal watersheds of southern California. Compiled as part of a CDFA grant. (Geodatabase)
- NOTE: Metadata is still underdevelopment.
---(posted 12.09.07) (151MB)

2007 Wildfire perimeter locations for Los Angeles County. (Shapefile)
- Developed by CalFire, Updated by CWH
---(posted 12.09.07)
  Malibu Creek Watershed Invasive Plant Inventory 2000-2004. (Shapefile)
- Developed by Heal The Bay, Stream Team
---(posted 12.09.07)
  2005 Upper Santa Clara River Watershed Arundo and Tamarisk Removal Program (Shapefiles)
- Developed by Ventura Co. RCD, Condor Environmental Planning Services, Inc., and AMEC
---(posted 12.09.07)
Iceplant distribution (6 species) for 24 coastal wetlands in Southern California (Shapefile)
- Developed by Eric Zahn, CSULB, 2005
---(posted 1.02.07)
Arundo donax within the Los Angeles River (Shapefile)
- Developed by CWH, 2002
---(posted 1.02.07)
* Additional data will be made available as we process the information.

If your organization would like to include your weed data to our clearinghouse, please contact Cas at 213-229-9946.

Maps

Arundo Acreage Estimates Along the Los Angeles River at Glendale Narrows (PDF) - mapped in 2002

Other Regional Datasets Online

Southern California -

Arundo donax distribution - Arundo distribution mapped at a small scale for major river systems. Data and maps available for download.
- Developed by the SMSLR Watersheds WMA

Ventura County -

Arundo donax - Point feature data mapped for the Matilija River. Data viewable in an ArcIMS only.
- Developed by David Magney Consulting

Arundo donax - Polygon feature data mapped for the Ventura River. Data viewable in an ArcIMS only.
- Developed by David Magney Consulting

San Diego County -

Arundo, perennial pepperweed, periwinkle, german/cape ivy, and tamarisk - Polygon feature data mapped on the Santa Margarita and San Luis Rey Watersheds. Data and maps available for download.
- Developed by the SMSLR Watersheds WMA