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
Version Version 5.0
Last Updated March 28, 2025, 08:36 (UTC)
Created March 28, 2025, 08:36 (UTC)
categorical_values {"2": 149339, "1": 2878508}
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 ofCalifornia on a geographic basis. The geographic scale selected is intended tobe useful for a wide range of decisions.'— The model is made up of multiple components cited in the above definition ascontributors to cumulative impacts.'— The model includes two components representing Pollution Burden '€“ Exposuresand Environmental Effects'— The model includes two components representing Population Characteristics '€“Sensitive Populations (e.g., in terms of health status and age) andSocioeconomic Factors.The American Community Survey (ACS) is an ongoing survey of the US populationconducted by the US Census Bureau and has replaced the long form of thedecennial census. Unlike the decennial census, which attempts to survey theentire population and collects a limited amount of information, the ACSreleases results annually based on a sub-sample of the population and includesmore detailed information on socioeconomic factors. Multiple years of data arepooled together to provide more reliable estimates for geographic areas withsmall population sizes. Each year, the HUD receives custom tabulations of ACSdata from the US Census Bureau. These data, known as the "CHAS" data(Comprehensive Housing Affordability Strategy), demonstrate the extent ofhousing problems and housing needs, particularly for low-income households.The most recent results available at the census tract scale are the 5-yearestimates for 2013-2017. The data are available from the HUD user website (seepage 174 in the document link below:https://oehha.ca.gov/media/downloads/calenviroscreen/report/calenviroscreen40reportf2021.pdf
data_units Categorical: Definition of field name COMPTYPE (Component type): "R" is Federally recognized American Indian Reservations (AIRs) . "T" is Off-Reservation Trust Lands (ORTL)
data_vintage 05/2022
date_updated August 2024
element Equitable Opportunity
encoding utf8
file_name SB535tribalBoundaries_202205_202312_T1_v5
format GeoTiff
harvest_object_id d32d557f-7474-475e-8a07-2c82524dd6ad
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.govThe AIANNH feature class from the Census Bureau depicts actual parcels of landwhich 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
pillar Social and Cultural Well-Being
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