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For years, I have maintained a list of bike paths in San Diego and Imperial Counties, and also some in Yuma, Arizona.
After six years without an update, the Yuma list had fallen out of date. So on November 5, 2009, I took a day trip to Yuma to resurvey the paths. I also found two new paths.
The time stamps on the image annotations are Mountain Standard Time.
Transcript of survey.
Data plotted on topo.
Philip J. Erdelsky