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The land area of Poway, CA was 39 in 2018. The land area of East Honolulu, HI was 23 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 Poway, CA or East Honolulu, HI

  • 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

    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

    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

    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.

  • API

    Wetlands

    highways.hidot.hawaii.gov | Last Updated 2023-03-24T00:40:00.000Z

    Wetlands in the State of Hawaii. Source: USFWS, August, 2019. This data set represents the extent, approximate location and type of wetlands and deepwater habitats in the United States and its Territories. These data delineate the areal extent of wetlands and surface waters as defined by Cowardin et al. (1979). The National Wetlands Inventory - Version 2, Surface Waters and Wetlands Inventory was derived by retaining the wetland and deepwater polygons that compose the NWI digital wetlands spatial data layer and reintroducing any linear wetland or surface water features that were orphaned from the original NWI hard copy maps by converting them to narrow polygonal features. Additionally, the data are supplemented with hydrography data, buffered to become polygonal features, as a secondary source for any single-line stream features not mapped by the NWI and to complete segmented connections. Wetland mapping conducted in WA, OR, CA, NV and ID after 2012 and most other projects mapped after 2015 were mapped to include all surface water features and are not derived data. The linear hydrography dataset used to derive Version 2 was the U.S. Geological Survey's National Hydrography Dataset (NHD). For additional information, please refer to metadata at https://files.hawaii.gov/dbedt/op/gis/data/wetlands.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

    2020 Agricultural Land Use

    highways.hidot.hawaii.gov | Last Updated 2023-03-24T00:47:00.000Z

    The 2020 Update to the Hawaiʻi Statewide Agricultural Land Use Baseline layer was created to provide a snapshot of contemporary commercial agricultural land use activity in Hawaiʻi. It is based upon an assemblage of geospatial datasets, primarily high-resolution WorldView-2 and WorldView-3 satellite imagery (2018 – 2020) used as a base layer for digitization. Additional datasets used in this work include GIS layers provided by the state of Hawaiʻi, Office of Planning Statewide GIS Program and other data provided by major land owners and managers. County Real Property Tax and Agricultural Water Use data were also used to identify commercial farm operations. Not all properties that receive County agricultural tax assessment rates or reduced water cost for agricultural uses were mapped due to the small scale of some of their operations. These data sources were used to verify mapped commercial farms and identify operations that might have been missed using the imagery alone. Digitized crop locations and boundaries were verified through a combination of on-the-ground site visits, meetings and presentations of draft layers with agricultural stakeholders and landowners, solicitations through a publicly accessible online web mapping portal, and spot- checking using Google Earth™ and other high resolution imagery sources. The 2020 Update to the Hawaiʻi Statewide Agricultural Land Use Baseline layer represents our best efforts to capture the scale and diversity of commercial agricultural activity in Hawaiʻi in 2020 and should be used for informational purposes only. Note: February 2022: Maui County added, Several additional minor updates have been made to the original 2020 Update to the Hawaii Statewide Agricultural Land Use Baseline that was published in May 2021. Note: April 2022: Several users of the data discovered that the original Hawaiʻi Statewide Agricultural Land Use Baseline layer and the 2020 Update to the Hawaiʻi Statewide Agricultural Land Use Baseline layer did not overlay properly, with an offset between the layers of 10 feet to 40 feet, depending on the area. As a result, both the original and the updated layers have been republished, and now overlay as they should. The underlying data itself has not changed. Please note - if you download data from the State's geoportal (https://geoportal.hawaii.gov/), the data is exported in WGS84 coordinates, although it is stored internally (in the State’s geodatabase), served in the State's web services (https://geodata.hawaii.gov/arcgis/rest/services) and made available in the State's legacy download site (https://planning.hawaii.gov/gis/download-gis-data-expanded/) in UTM / NAD 83 coordinates. For additional information, please refer to complete metadata at https://files.hawaii.gov/dbedt/op/gis/data/aglanduse_2020_haw.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.