Figure 1-1: St. Louis Encephalitis Virus Neuroinvasive Disease Cases Reported by State, 1964–2010 .......................................................................................................................1-3

Figure 1-2: Reported Cases of Human Plague – United States, 1970–2012 .............................1-8

Figure 2-1: Napa County Mosquito Abatement District Program Area ......................................2-3

Figure 4-1: Aquatic Zoogeographic Provinces ...................................................................................4-3

Figure 4-2: Ecological Food Web Concept.......................................................................................4-62

Figure 5-1: Terrestrial Ecoregion Provinces.......................................................................................5-3

Figure 5-2: Ecological Food-Web Concept ......................................................................................5-35

Figure 6-1: Ecological Food Web Concept.......................................................................................6-14

Figure 9-1: Napa County Mosquito Abatement District Program Area and California Hydrologic Regions with Major Waterbodies ...................................................................9-3