2005 California Desert Exotic Mustard Roadside Survey

Cal. Hwy 247 - March-April 2005 - Raw data

Surveyed and Copyright © 2005 by Craig Dremann

Box 361, Redwood City, CA 94064 - (650) 325-7333


Intellectual Property Notice: You are welcome to reprint this data, for your own personal use. However, if you want to distribute, reproduce, modify or incorporate this data into another product including maps, you need to obtain a license for use. Craig Dremann owns the title, copyright, and other intellectual propertiy rights on this data, and the data is licensed, not sold. Reprinting the data or utilizing it for economic purposes including projects funded by grants, without obtaining a license, the user agrees to pay liquidated damages of $100 per mile. Use of this web site constitutes your acceptance of this agreement, and Craig Dremann reserves the right to change the terms and conditions under which it offers this site. - Licenses are available for use of the data by researchers, universities, or agencies at $8 per mile.




Cal. Hwy 247 - March-April 2005 - Raw data

Results of a 70 mph windshield survey (or whatever the local speed limits were), of three exotic Mustards: Either not present; is present along roadsides or in medians; or is outside of the roadside to the fence line or has moved from the roadsides to infest adjacent land.

NS = None Seen. None of the three exotic Mustards of concern were seen along roadside ditches; or if divided highway, also not seen in the roadside median, or in lands adjacent to the road.

RS = Road Sides were infested. MED = In divided highways, in medians.

DES = One or more Exotic Mustards have moved from the roadsides into the desert, agricultural areas, or other lands adjacent to the roadsides. FL = Only found along the highway cyclone-fence line, but is far enough off the roadside to pose an immediate problem for the lands adjacent to the fences. At the time of the survey, did not appear to be moving off the fence line yet.

SPECIES PRESENT:

BT = Brassica tournefortii = Sahara Mustard
SL = Sisymbrium irio = London Rocket
SO = Sisymbrium orientale = Indian Hedge Mustard

PM = Post miles along highways, and numbers indicate the averages found not just at each post mile, but for 1/2 mile on either side of the post mile marker.

(Landmarks and other notes on other exotics or native plants will be in parentheses)



SAN BERNARDINO COUNTY, Cal. Hwy 247,
Barstow to Jct. Cal 62, Yucca Valley

Raw data March 19, 2005, updated April 4 and may be periodically updated.

Start Jct. I-15, Cal. 247 (PM 78 )

78 - RS - BT
77 - RS - BT
76 - RS - BT
75 - DES - BT
74 - DES - BT
73 - DES - BT - scattered
72 - RS - BT
71 - RS - BT
ends in middle of Stoddard Valley
70 - RS - SL begins - scattered

69 - NS -
(Slash X Ranch Cafe)
68 - NS
67 - NS
66 - NS
65 - NS
64 - NS
63 - NS
62 - NS (Amsinckia & Phacelia)
61 - NS (Amsinckia & Phacelia)
60 - NS
(Pass, Elevation 4048 feet)
59 - RS- SL
58 - RS - SL - thick
57 - RS - SL

56 - NS
55 - NS
54 - NS
53 - RS - SL - thin and scattered
52 - RS - SL - solid
51 - DES - SL
50 - NS -
Lucerne Lake, full of water
49 - NS -
Lucerne Lake
48 - NS -
Lucerne Lake
47 - DES - SL - Agriculture fields solid to horizon, 100s of acres.
Click here for
46 - DES - SL - Valley solid
45 - RS - SL
44 - RS - SL
43 - DES & RS - SL scattered
42 - RS - SL - scattered
41 - RS - SL - scattered
40 - RS - SL - very scattered
39 - RS - SL - thick next to field
38 - DES - SL
37 - RS - SL - south side of road
36 - RS - SL - south side of road
35 - RS - SL - solid stands
34 - RS - SL - thin
33 - RS - SL - thick
32 - DES & RS - SL
31 - DES - SL - solid!
(Johnson Valley ORV)
30 - DES - SL - solid to horizon
29 - DES - SL - thin
28 - RS - SL - thin (Perhaps solid in hills to east?)
27 - DES & RS - SL - thin
26 - DES - SL thick

25 - RS - SL - thin
24 - RS - SL - scattered
23 - RS - SL - scattered
22 - RS - SL - scattered
21 - RS - SL - scattered
20 - RS - SL - scattered
19 - RS - SL - thick in stands
18 - DES & RS - thick along roadsides, homes in area
17 - DES - SL - thick
16 - RS - SL - thick
15 - RS - SL - thin
14 - RS - SL - scattered
13 - RS - SL - scattered
(Linn Road)
12 - RS - SL - edge of town
11 - RS - SL - thick in places
10 - RS - SL - thick in places
9 - RS - SL - thick in places

8 - NS - (Amsinckia)
7 - NS - (Amsinckia)
6 - NS - (Joshua tree forest)
5 - NS
4 - NS -
edge of town of Yucca valley
3 - RS - BT
2 - RS - BT thick
1 - RS - BT scattered

0.00 - NS,
center of Yucca Valley town (Jct. of Cal. Hwy 62)




Updated December 23, 2005 - BACK TO MAIN PAGE