American Indian Land Areas

Lands under the control of federally recognized Tribes. These boundaries have been clipped to the boundary of California so that only the portions of each Tribal area that fall within California are included. For purposes of this designation, a Tribe may establish that a particular area of land is under its control even if not represented as such on CalEPA's DAC map and therefore should be considered a DAC by requesting a consultation with the CalEPA Deputy Secretary for Environmental Justice, Tribal Affairs and Border Relations at TribalAffairs@calepa.ca.gov

The AIANNH feature class from the Census Bureau depicts actual parcels of land which fall into one of the following classifications:

  • Federally designated Tribal reservation
  • Off-reservation trust land (ORTL) (U.S. Trust '€“ owned by the US Government, managed by the BIA on behalf of the designated Tribe)

Data and Resources

Additional Info

Field Value
Last Updated January 17, 2025, 06:43 (UTC)
Created January 17, 2025, 06:43 (UTC)
category /Social and Cultural Well-Being/Equitable Opportunity
collection_name California Landscape Metrics
creation_method CalEnviroScreen, Version 4.0, is a science-based method for identifying impacted communities by taking into consideration pollution exposure and its effects, as well as health and socioeconomic status, at the census-tract level. CalEnviroScreen 4.0 uses the census tract as the unit of analysis. Census tract boundaries are available from the Census Bureau. CalEnviroScreen uses the Bureau's 2010 boundaries. New boundaries will be drawn by the Census Bureau as part of the 2020 Census but will not be available until 2022. OEHHA will address updates to census tract geography in CalEnviroScreen at that time. There are approximately 8,000 census tracts in California, representing a relatively fine scale of analysis. Census tracts are made up of multiple census blocks, which are the smallest geographic unit for which population data are available. Some census blocks have no people residing in them (unpopulated blocks). The CalEnviroScreen model is based on the CalEPA working definition in that: '— The model is place-based and provides information for the entire State of California on a geographic basis. The geographic scale selected is intended to be useful for a wide range of decisions. '— The model is made up of multiple components cited in the above definition as contributors to cumulative impacts. '— The model includes two components representing Pollution Burden '€“ Exposures and Environmental Effects '— The model includes two components representing Population Characteristics '€“ Sensitive Populations (e.g., in terms of health status and age) and Socioeconomic Factors. The American Community Survey (ACS) is an ongoing survey of the US population conducted by the US Census Bureau and has replaced the long form of the decennial census. Unlike the decennial census, which attempts to survey the entire population and collects a limited amount of information, the ACS releases results annually based on a sub-sample of the population and includes more detailed information on socioeconomic factors. Multiple years of data are pooled together to provide more reliable estimates for geographic areas with small population sizes. Each year, the HUD receives custom tabulations of ACS data from the US Census Bureau. These data, known as the "CHAS" data (Comprehensive Housing Affordability Strategy), demonstrate the extent of housing problems and housing needs, particularly for low-income households. The most recent results available at the census tract scale are the 5-year estimates for 2013-2017. The data are available from the HUD user website (see page 174 in the document link below: https://oehha.ca.gov/media/downloads/calenviroscreen/report/calenviroscreen40reportf2021.pdf
data_units Categorical
data_vintage 05/2022
encoding utf8
file_name SB535tribalBoundaries_202205_202312_T1_v5
format GeoTiff
harvest_object_id 9621f1bb-b464-4e31-bd7c-a92bfc5f787a
harvest_source_id a2637971-af12-457f-ae4a-831d2202a539
harvest_source_title WIFIRE Commons
maximum_value 2.0
metric_definition_and_relevance Lands under the control of federally recognized Tribes. These boundaries have been clipped to the boundary of California so that only the portions of each Tribal area that fall within California are included. For purposes of this designation, a Tribe may establish that a particular area of land is under its control even if not represented as such on CalEPA's DAC map and therefore should be considered a DAC by requesting a consultation with the CalEPA Deputy Secretary for Environmental Justice, Tribal Affairs and Border Relations at TribalAffairs@calepa.ca.gov The AIANNH feature class from the Census Bureau depicts actual parcels of land which fall into one of the following classifications: * Federally designated Tribal reservation * Off-reservation trust land (ORTL) (U.S. Trust '€“ owned by the US Government, managed by the BIA on behalf of the designated Tribe)
minimum_value 1.0
spatial {"type": "Polygon", "coordinates": [[[-124.5090833859125, 32.4242698701859], [-113.49380570277376, 32.4242698701859], [-113.49380570277376, 42.1119747450123], [-124.5090833859125, 42.1119747450123], [-124.5090833859125, 32.4242698701859]]]}
tier 1