Datasets > Polygon data > California > 2005-2009

Hydrologic Sub Area Watersheds: San Francisco Bay Area, California, 2009

Bay Area Open Space Council · 2009 Full Details

Full Details

Title
Hydrologic Sub Area Watersheds: San Francisco Bay Area, California, 2009
Description
This polygon shapefile depicts a dissolve that was run on the Hydrologic Sub Areas for the nine county San Francisco Bay Area Region, California. Hydrologic Sub Areas are those ranging in size from 195-243 square miles or 125,000-155,999 acres (Myers & Peltz-Lewis, 2004). This data was derived from the California Watershed Map (CalWater version 2.2), a set of standardized watershed boundaries meeting standardized delineation criteria. The hierarchy of watershed designations consists of six levels of increasing specificity: Hydrologic Region (HR), Hydrologic Unit (HU), Hydrologic Area (HA), Hydrologic Sub Area (HSA), Super Planning Watershed (SPWS) and Planning Watershed (PWS). The primary purpose of CalWater is the assignment of a single, unique code to a specific watershed polygon. Watersheds are useful for many aspects of the Project, including development of watershed integrity analysis. These data were critical for the Fish and Riparian Focus Team portion of the Project., This dataset was developed/compiled for use in the San Francisco Bay Area Upland Habitat Goals Project, a Project used to identify a Conservation Lands Network (CLN) for biodiversity preservation to inform conservation investments and lasting cooperative conservation partnerships. The Conservation Lands Network GIS Database is the primary output of the Project. The data depicts the spatially explicit CLN that is recommended for the nine county San Francisco Bay Area Region, California., This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.
Creator
Bay Area Open Space Council, Conservation Lands Network, San Francisco Bay Area Upland Habitat Goals Project, GreenInfo Network (Firm)
Publisher
Bay Area Open Space Council
Subject
Hydrography, Hydrological surveys, Watersheds, Environment, Boundaries, Inland Waters
Temporal Coverage
2009
Date Issued
2011
Rights
This item is in the public domain. There are no restrictions on use.
Rights Holder
This work is in the Public Domain, meaning that it is not subject to copyright.
Access Rights
Public
Format
Shapefile
Language
English
Date Added
October 01, 2025

Location

Cite and Reference

  • Citation
    Bay Area Open Space Council, Conservation Lands Network, San Francisco Bay Area Upland Habitat Goals Project, GreenInfo Network (Firm) (2011). Hydrologic Sub Area Watersheds: San Francisco Bay Area, California, 2009. Bay Area Open Space Council. (dataset)
  • BTAA Geoportal Link

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