Maps of Salvinia molesta infestation in the lower Colorado River

Links below are to files showing surveys from the PVID outfall drain to below Laguna Dam. For all of the links, upper refers to the area from Palo Verde to below Walter's Camp, middle refers to the area from below Walter's Camp to east of Adobe Lake, and lower covers the area from east of Adobe Lake to below Laguna Dam. Comparing from year to year in the same months provides an example of spread over time. Thanks to Ben Ladaire and Jennifer Green, BLM for conducting the surveys and providing the maps.

2005

January,
point counts 1(801 KB), 2 (1.03 MB)
Map 1 (737 KB), 2 (1.14 MB), 3 (792 KB)

2004

April, Map 1 (708 KB), 2 (1.95 MB), 3 (2.01 MB), 4 (1.4 MB)
June, Map 1 (915 KB), 2 (1.85 MB), 3 (2.09MB), 4 (1.4 MB)
August, Map 1 (915 KB), 2 (1.6 MB), 3 (1.7 MB), 4 (1.3 MB), 5 (818 KB)
September, Map 2 (1.6 MB), 3 (1.7 MB), 4 (1.28 MB), 5 (818 KB)
October, Map 2 (1.6 MB), 3 (582 KB)

2003

February - upper (2.72 MB)
February - middle (2.64 MB)
March - upper (2.37 MB)
March - middle (2.76 MB)
March - lower (2.58 MB)

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2002

April - upper (2.26 MB)
April - middle (2.72 MB)
April - lower (2.54 MB)
June - upper (2.70 MB)
June -middle (2.72 MB)
June - lower (2.53 MB)
August - lower (2.49 MB)
September - upper (2.40 MB)
September - middle (2.79 MB)
September - lower (2.53 MB)

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2001

July - upper (2.60 MB)
July - middle (2.80 MB)
July -  lower (2.53 MB)
September - upper (2.30 MB)
September -middle (2.78 MB)
September - lower (2.50 MB)

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