General InformationThe SWAP defines "targets" throughout the state and describes "Strategies" for each target. The grouping for these targets is based on "Hydrologic Units" which are defined by "Hydrologic Unit Codes" (HUCs). Each code defines a watershed. 4-digit HUCs describe large watersheds which group the watersheds of many rivers. As the watersheds become more specific, numbers are added to the HUC to define them in more detail, so that an 8-digit hydrologic unit (HUC8) is much smaller than a 4 -digit hydrologic unit (HUC4). The HUCs in this data set are defined in the National Hydrography Dataset (NHD), which describes watersheds and waterbodies throughout the United States.Aquatic Targets in the SWAP are grouped by 4 to 12-digit HUCs into "Conservation Units". These units are described in the first table of each section of Chapter 5 of the SWAP report, which is available at https://www.wildlife.ca.gov/SWAP/Final. Each 4-digit HUC has one or more "Conservation Targets", which are composed of groups of specific targeted fish and/or other aquatic species or, in the Deserts, specific aquatic features. The foundation of the smaller groupings of this data set is the "Zoogeographic Provinces of California", a map in "Inland Fishes of California" by Peter Moyle. This document describes the native fish assemblage areas. The data defining these units was acquired from University of California at Davis Center for Watershed Science. This data set describes the Conservation Units, Targets, and conservation strategies (including Climate Change strategies) and provides the specific SWAP document pages on which to find details about strategies and other information about the targets.