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The land area of Brea, CA was 12 in 2018. The land area of Kailua, HI was 8 in 2018.

Land Area

Water Area

Land area is a measurement providing the size, in square miles, of the land portions of geographic entities for which the Census Bureau tabulates and disseminates data. Area is calculated from the specific boundary recorded for each entity in the Census Bureau's geographic database. Land area is based on current information in the TIGER® data base, calculated for use with Census 2010.

Water Area figures include inland, coastal, Great Lakes, and territorial sea water. Inland water consists of any lake, reservoir, pond, or similar body of water that is recorded in the Census Bureau's geographic database. It also includes any river, creek, canal, stream, or similar feature that is recorded in that database as a two- dimensional feature (rather than as a single line). The portions of the oceans and related large embayments (such as Chesapeake Bay and Puget Sound), the Gulf of Mexico, and the Caribbean Sea that belong to the United States and its territories are classified as coastal and territorial waters; the Great Lakes are treated as a separate water entity. Rivers and bays that empty into these bodies of water are treated as inland water from the point beyond which they are narrower than 1 nautical mile across. Identification of land and inland, coastal, territorial, and Great Lakes waters is for data presentation purposes only and does not necessarily reflect their legal definitions.

Above charts are based on data from the U.S. Census American Community Survey | ODN Dataset | API - Notes:

1. ODN datasets and APIs are subject to change and may differ in format from the original source data in order to provide a user-friendly experience on this site.

2. To build your own apps using this data, see the ODN Dataset and API links.

3. If you use this derived data in an app, we ask that you provide a link somewhere in your applications to the Open Data Network with a citation that states: "Data for this application was provided by the Open Data Network" where "Open Data Network" links to http://opendatanetwork.com. Where an application has a region specific module, we ask that you add an additional line that states: "Data about REGIONX was provided by the Open Data Network." where REGIONX is an HREF with a name for a geographical region like "Seattle, WA" and the link points to this page URL, e.g. http://opendatanetwork.com/region/1600000US5363000/Seattle_WA

Geographic and Area Datasets Involving Brea, CA or Kailua, HI

  • API

    CA Water Resources Regional Offices

    data.bayareametro.gov | Last Updated 2022-07-15T06:31:53.000Z

    The Watershed Boundary Dataset (WBD) is a comprehensive aggregated collection of hydrologic unit data consistent with the national criteria for delineation and resolution. It defines the areal extent of surface water drainage to a point except in coastal or lake front areas where there could be multiple outlets as stated by the "Federal Standards and Procedures for the National Watershed Boundary Dataset (WBD)" “Standard” (http://pubs.usgs.gov/tm/11/a3/). Watershed boundaries are determined solely upon science-based hydrologic principles, not favoring any administrative boundaries or special projects, nor particular program or agency. This dataset represents the hydrologic unit boundaries to the 12-digit (6th level) for the entire United States. Some areas may also include additional subdivisions representing the 14- and 16-digit hydrologic unit (HU). At a minimum, the HUs are delineated at 1:24,000-scale in the conterminous United States, 1:25,000-scale in Hawaii, Pacific basin and the Caribbean, and 1:63,360-scale in Alaska, meeting the National Map Accuracy Standards (NMAS). Higher resolution boundaries are being developed where partners and data exist and will be incorporated back into the WBD. WBD data are delivered as a dataset of polygons and corresponding lines that define the boundary of the polygon. WBD polygon attributes include hydrologic unit codes (HUC), size (in the form of acres and square kilometers), name, downstream hydrologic unit code, type of watershed, non-contributing areas, and flow modifications. The HUC describes where the unit is in the country and the level of the unit. WBD line attributes contain the highest level of hydrologic unit for each boundary, line source information and flow modifications.

  • API

    Land Use_data

    opendata.utah.gov | Last Updated 2024-04-10T19:40:16.000Z

    This dataset combines the work of several different projects to create a seamless data set for the contiguous United States. Data from four regional Gap Analysis Projects and the LANDFIRE project were combined to make this dataset. In the Northwestern United States (Idaho, Oregon, Montana, Washington and Wyoming) data in this map came from the Northwest Gap Analysis Project. In the Southwestern United States (Colorado, Arizona, Nevada, New Mexico, and Utah) data used in this map came from the Southwest Gap Analysis Project. The data for Alabama, Florida, Georgia, Kentucky, North Carolina, South Carolina, Mississippi, Tennessee, and Virginia came from the Southeast Gap Analysis Project and the California data was generated by the updated California Gap land cover project. The Hawaii Gap Analysis project provided the data for Hawaii. In areas of the county (central U.S., Northeast, Alaska) that have not yet been covered by a regional Gap Analysis Project, data from the Landfire project was used. Similarities in the methods used by these projects made possible the combining of the data they derived into one seamless coverage. They all used multi-season satellite imagery (Landsat ETM+) from 1999-2001 in conjunction with digital elevation model (DEM) derived datasets (e.g. elevation, landform) to model natural and semi-natural vegetation. Vegetation classes were drawn from NatureServe’s Ecological System Classification (Comer et al. 2003) or classes developed by the Hawaii Gap project. Additionally, all of the projects included land use classes that were employed to describe areas where natural vegetation has been altered. In many areas of the country these classes were derived from the National Land Cover Dataset (NLCD). For the majority of classes and, in most areas of the country, a decision tree classifier was used to discriminate ecological system types. In some areas of the country, more manual techniques were used to discriminate small patch systems and systems not distinguishable through topography. The data contains multiple levels of thematic detail. At the most detailed level natural vegetation is represented by NatureServe’s Ecological System classification (or in Hawaii the Hawaii GAP classification). These most detailed classifications have been crosswalked to the five highest levels of the National Vegetation Classification (NVC), Class, Subclass, Formation, Division and Macrogroup. This crosswalk allows users to display and analyze the data at different levels of thematic resolution. Developed areas, or areas dominated by introduced species, timber harvest, or water are represented by other classes, collectively refered to as land use classes; these land use classes occur at each of the thematic levels. Six layer files are included in the download packages to assist the user in displaying the data at each of the Thematic levels in ArcGIS.

  • API

    Explosive Dumping Areas

    highways.hidot.hawaii.gov | Last Updated 2023-03-24T01:28:14.000Z

    Explosive dumping areas located in marine waters within the vicinity of the main Hawaiian Islands and recorded on the nautical charts. Source, NOAA raster nautical charts, 2002. For additional information, please refer to metadata at https://files.hawaii.gov/dbedt/op/gis/data/explosive_dumping_areas.pdf or contact Hawaii Statewide GIS Program, Office of Planning and Sustainable Development, State of Hawaii; PO Box 2359, Honolulu, Hi. 96804; (808) 587-2846; email: gis@hawaii.gov; Website: https://planning.hawaii.gov/gis.

  • API

    Aquifers (DLNR)

    highways.hidot.hawaii.gov | Last Updated 2023-03-24T01:14:19.000Z

    Aquifer Sector Area and (smaller, sub-region) Aquifer System Area boundaries, as determined/defined by the State Department of Land and Natural Resources, Commission on Water Resource Management to provide a consistent basis for managing ground water resources. Data updated June 2022. Aquifer sector and system area boundaries were adopted to provide a consistent method by which to reference and describe ground water resources and to assist in various water planning efforts. These boundaries are not meant to be interpreted as absolute hydrologic boundaries. For more information on aquifer area boundaries, aquifer descriptions, and sustainable yields, please refer to the Hawaii Water Plan, Water Resource Protection Plan Update, 2019. Note: The Hawaii State Department of Health maintains another GIS aquifer layer, which is more resource-oriented in nature, and which has different boundaries than the CWRM version, which is more administrative in nature. For additional information, please refer to complete metadata at https://files.hawaii.gov/dbedt/op/gis/data/aquifers_dlnr.pdf or contact Hawaii Statewide GIS Program, Office of Planning and Sustainable Development, State of Hawaii; PO Box 2359, Honolulu, Hi. 96804; (808) 587-2846; email: gis@hawaii.gov; Website: https://planning.hawaii.gov/gis.

  • API

    Recycled Water Use Management Zones

    highways.hidot.hawaii.gov | Last Updated 2023-03-24T00:53:26.000Z

    Recycled Water Use Management Zones as of 2016. Source: HDOH-Safe Drinking Water Branch. Layer designates areas where the use of recycled water is restricted, conditional, or unrestricted. Certain sensitive areas that may be potentially impacted by recycled water use are subject to notification and monitoring requirements. For additional information, please refer to complete metadata at https://files.hawaii.gov/dbedt/op/gis/data/reuse_mngmnt_zones_metadata.pdf or contact Hawaii Statewide GIS Program, Office of Planning and Sustainable Development, State of Hawaii; PO Box 2359, Honolulu, HI 96804; (808) 587-2846; email: gis@hawaii.gov; Website: https://planning.hawaii.gov/gis.

  • API

    All Ocean

    highways.hidot.hawaii.gov | Last Updated 2023-03-24T01:30:55.000Z

    Layer developed by Office of Planning for cartographic use – provides a large polygon around the main 8 Hawaiian islands for use as a mask or background when making maps. For additional information, please refer to metadata at https://files.hawaii.gov/dbedt/op/gis/data/Ocean_Mask.pdf or contact Hawaii Statewide GIS Program, Office of Planning and Sustainable Development, State of Hawaii; PO Box 2359, Honolulu, Hi. 96804; (808) 587-2846; email: gis@hawaii.gov; Website: https://planning.hawaii.gov/gis.

  • API

    Watersheds

    highways.hidot.hawaii.gov | Last Updated 2023-03-24T01:12:25.000Z

    Surface Water Hyrdrologic Unit Boundaries (Watersheds) for the 8 major Hawaiian Islands. Source: GDSI, 1995, 1999; State of Hawaii Commission on Water Resource Management (CWRM), 2008. Provided to State GIS, August, 2017. Update: 2022 - Revised surface water management area (SWMA) designations to reflect recent designation of West Maui. Provided to Statewide GIS Program, August 2022. Note: The Hawaii Statewide GIS Program was notified in February 2023 that some values for the area_sqmi field were incorrect. GIS staff corrected the errors and republished the layer, March 2, 2023. For additional information, please refer to complete metadata at https://files.hawaii.gov/dbedt/op/gis/data/watersheds_cwrm.pdf or contact Hawaii Statewide GIS Program, Office of Planning and Sustainable Development, State of Hawaii; PO Box 2359, Honolulu, Hi. 96804; (808) 587-2846; email: gis@hawaii.gov; Website: https://planning.hawaii.gov/gis.

  • API

    Dumping Areas

    highways.hidot.hawaii.gov | Last Updated 2023-03-24T01:30:04.000Z

    Dumping areas located in marine waters within the vicinity of the main Hawaiian Islands and recorded on the nautical charts. Source, NOAA raster nautical charts, 2002. For additional information, please refer to metadata at https://files.hawaii.gov/dbedt/op/gis/data/dumping_areas.pdf or contact Hawaii Statewide GIS Program, Office of Planning and Sustainable Development, State of Hawaii; PO Box 2359, Honolulu, Hi. 96804; (808) 587-2846; email: gis@hawaii.gov; Website: https://planning.hawaii.gov/gis.

  • API

    Non Designated ORMAs

    highways.hidot.hawaii.gov | Last Updated 2023-03-24T01:25:16.000Z

    Non-Designated Ocean Recreation Management Areas (ORMAs) (Unverified): All waters outside of designated ORMAs but within 3000 ft. seaward of the shoreline, as defined in HAR Ch. 256. This layer is "unverified." Boundaries were generated using the HAR rule descriptions and other DOBOR documents, but they have not been officially verified. For additional information, please refer to metadata at https://files.hawaii.gov/dbedt/op/gis/data/ormas.pdf or contact the Hawaii Statewide GIS Program, Office of Planning and Sustainable Development, State of Hawaii; PO Box 2359, Honolulu, Hi. 96804; (808) 587-2846; email: gis@hawaii.gov; Website: https://planning.hawaii.gov/gis.

  • API

    Area With Potential for Warm Ground Water

    highways.hidot.hawaii.gov | Last Updated 2023-03-23T23:23:20.000Z

    Areas with potential for warm ground water in the State of Hawaii. Source: Geothermex, 2000. For more information, see metadata at https://files.hawaii.gov/dbedt/op/gis/data/potential_warm_ground_water.pdf or contact Hawaii Statewide GIS Program, Office of Planning and Sustainable Development, State of Hawaii; PO Box 2359, Honolulu, Hi. 96804; (808) 587-2846; email: gis@hawaii.gov; Website: https://planning.hawaii.gov/gis.