2005 California Desert Exotic Mustard Roadside Survey

U.S. Highway 95 - May 2005 - Raw data.
Nevada; and California's San Bernardino & Riverside Counties

Surveyed and Copyright © 2005 by Craig Dremann

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


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PICTURES

Photos from 2005, May 17-19, NORTH TO SOUTH:

US 95 California Nevada border, no mustard.

US 95 looking northward across the California/Nevada border.
No mustard. What is Nevada doing right?

US 95 on Nevada side of the border, no mustard. What is the Nevada DOT doing?

US 95 at California border. Oh, no, there's mustard lurking underneath a creosote bush!

US 95 - California side of the border, mustards along the roadside and into the desert.
What is Caltrans doing wrong? ... Just wait until you go only two miles south into the State of California..when you hit...


"The Great Wall of Mustard" US 95 San Bernardino County PM 71 (to PM 78), starts 2 miles from the Nevada border and is 14-20 miles north of I-40. "No Smoking!!". Photo 5/19/2005


"The Great Wall of Mustard" US 95 San Bernadino County PM 71. Takes your breath away!


The native perennial Datura seems to be one of the few native desert plants that can grow on an equal basis within the exotic invasive mustard. US 95 San Bernardino County PM 74.

US 95 San Bernardino County PM 74. When the mustards gets as thick along the roadsides as at the "Great Wall of Mustard", it will then shortly thereafter be marching out into the desert.



US 95 PM 44 San Bernardino County, mustards are still within 50 feet of the roadsides and not in the desert yet.


US 95 San Bernardino County PM 35, 24 miles north of Vidal Junction. Mustards thick along road and starting to spread into the desert. Photo 5/18/2005.


US 95 San Bernardino County PM 35 showing density of mustards in desert, the infestation starting to move off the roadsides into the creosote bush habitat.


US 95 PM 30 San Bernardino Co., the mustard solid out into the desert.


US 95 San Bernardino County PM 20, 9 miles south of Vidal Junction, when the mustard gets this thick along the roadsides, it starts moving out into the desert. Notice that Caltrans scraped this ditch very recently. Photo. 5/18/2005


US 95 PM 18 San Bernardino County, roadsides solid but only scattered plants in the desert



US 95 PM 8 San Bernardino County, one mile south of Vidal Junction, along roadside but not out into the desert yet.

US 95 PM 32 Riverside County, Colorado Indian Reservation, fortunately no mustard yet.



California Highway 95 - May 2005 - Raw data.

Results of a 70 mph windshield survey (or whatever the local speed limits were), of Sahar mustard (Brassica tournefortii): 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 = No Sahara mustard was 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 iwth Sahara mustard. MED = In divided highways, in medians.

DES = Sahara mustard has 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 SURVEYED for:

BT = Brassica tournefortii or Sahara 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)



NEVADA to California border, southbound

Survey 5/19/2005, notebook 194, pages 19-20

(Post Miles, Start 6 miles north of California border, in Nevada)

6 - Nevada
5 -
4 -
3 -
2 -
1 -
0 -
Nevada-California border


SAN BERNARDINO COUNTY, south from Nevada border

Survey 5/17/2005, data to follow, notebook 194, pages 19-20 & notebook 193, pages 35-40.

Survey starts at Nevada/California border (PM 80.4)

80 -
79 -
78 -
77 -
76 -
75 -
74 -
73 -
72 -
71 -
70 -
69 -
68 -
67 -
66 -
65 -
Railroad crossing
64 -
63 -
62 -
61 -
60 -
59 -
58 -
Junction Interstate 40 (PM 57.7)
57 -
56 -
55 -
54 -
53 -
52 -
51 -
50 -
49 -
48 -
47 -
46 -
45 -
44 -
43 -
42 - Summit
41 -
40 -
39 -
38 -
Havasu Lake Road
37 -
36 -
35 -
34 -
33 -
32 -
31 -
30 -
29 -
28 -
27 -
26 -
25 -
24 -
23 -
22 -
21 -
20 -
19 -
18 -
17 -
16 -
15 -
14 -
13 -
12 -
11 -
10 -
Junction California 62, V idal Junction
9 -
8 -
7 -
6 -
5 -
4 -
Ghost Town of Vidal, and Railroad crossing
3 -
2 -
1 -
0 -

RIVERSIDE COUNTY LINE



Start San Bernardino/Riverside County line (PM 36.19)

36 -
35 -
34 - (ColoradoRiver Indian Reservation)
33 -
32 -
31 -
30 -
29 -
28 -
27 -
26 -
25 -
24 -
23 -
22 -
21 -
20 -
19 -
18 -
17 -
16 -
Blythe Intaglios, ancient Native American made figures in desert, 95 to 167 feet long.
15 -
14 -
13 -
12 -
11 - (good road, to Colorado River)
10 -
9 -
8 -
7 -
6 -
5 -
4 -
3 -
2 -
1 -
0 -

End Junction Interstate 10, Blythe



Updated September 7, 2005 - BACK TO MAIN PAGE