Alturas Field Office

Modoc County Weed Management Project Area

Map of the Weed Prevention Program area in Modoc County. For more information regarding the contents of this map; contact the Alturas Field Office at 530-233-4666


Property Descrition:
The Modoc County WMA covers 2,141,254 acres in Modoc County, California, within the Alturas Field Office boundary. 147,250 of these acres are public lands managed by the BLM.  The vast majority of this land is Juniper and Sagebrush rangeland. Developed facilities at the West Valley and Centerville Fire Stations are also part of the Modoc County Weed Management Area (WMA).

2011 Modoc County BLM Property Weed Inventory:
9,510 acres of BLM land were inventoried for noxious weeds in Modoc County during the 2011 field season. Below is a summary of the weed sites found and treated.


Table 1 - 2011 Modoc County 
Weed Points

 # Sites

 Weed Name

 Acres

 2

Bull Thistle 

0.007 

 2

 Canada Thistle

0.009

 5

 Russian Knapweed

0.029

 6

 Dyers Woad

 0.356

 23

 Yellow Starthistle

 4.593

 37

 Mediterranean Sage

 2.763

 78

 Scotch Thistle

 5.973

 153

 Totals

 13.732


Table 2 - 2011 Modoc County Weed Lines

# SitesWeed NameAcres

3

Dyers Woad

5.142

2

Scotch Thistle

4.009

5

Totals

9.151

 

In total, 158 weed sites totaling 22.9 acres were inventoried on Modoc County BLM land in 2011.