Abstract
This chapter describes the use of commercially available mobile computing and geographic information system (GIS) technologies used to inventory, monitor, and document control treatments for noxious weed populations within the Mokelumne River Hydroelectric Project watershed. It also describe a mobile GIS platform consisting of a handheld PC with wireless global positioning system (GPS) receiver, and ESRI® ArcPad TM GIS software. Ground photos hyperlink to their corresponding features in the GIS database. New feature documentation is accomplished with the GPS, or on the touch screen using a stylus. Integrated electronic data forms allow highly customized documentation of feature attributes. Long-term monitoring of natural resources at the landscape level is a challenging task. Pacific Gas and Electric Company's hydroelectric project watersheds, located throughout the Sierra Nevada Mountains of central and northern California, collectively represent tens-of-thousands of acres where ecological monitoring activities are required by the Federal Energy Regulatory Commission (FERC). Noxious weeds, and the habitats they affect, are often associated with managed linear rights-of-way that comprise elements of hydropower systems. These elements include roads, transmission corridors, canals, and penstocks. The control of noxious weeds within FERC project boundaries is increasingly made the responsibility of the licensee under specific Articles or Conditions of a federal project license.
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