cityofchicago/elevation-benchmarks-zgvr-7yfd

  • benchmarks
  • gis

Elevation Benchmarks

Elevation Benchmarks

The following dataset includes "Active Benchmarks," which are provided to facilitate the identification of City-managed standard benchmarks. Standard benchmarks are for public and private use in establishing a point in space. Note: The benchmarks are referenced to the Chicago City Datum = 0.00, (CCD = 579.88 feet above mean tide New York). The City of Chicago Department of Water Management’s (DWM) Topographic Benchmark is the source of the benchmark information contained in this online database. The information contained in the index card system was compiled by scanning the original cards, then transcribing some of this information to prepare a table and map. Over time, the DWM will contract services to field verify the data and update the index card system and this online database.This dataset was last updated September 2011. Coordinates are estimated. To view map, go to https://data.cityofchicago.org/Buildings/Elevation-Benchmarks-Map/kmt9-pg57 or for PDF map, go to http://cityofchicago.org/content/dam/city/depts/water/supp_info/Benchmarks/BMMap.pdf. Please read the Terms of Use: http://www.cityofchicago.org/city/en/narr/foia/data_disclaimer.html.

Columns

NameSocrata field nameColumn name in sgr mountData typeDescription
ESTIMATED LOCATION (address)estimated_location_addressestimated_location_addressText
ESTIMATED LOCATION (zip)estimated_location_zipestimated_location_zipText
ESTIMATED LOCATION (city)estimated_location_cityestimated_location_cityText
Wards:@computed_region_43wa_7qmu:@computed_region_43wa_7qmuNumber
Zip Codes:@computed_region_6mkv_f3dw:@computed_region_6mkv_f3dwNumber
Boundaries - ZIP Codes:@computed_region_rpca_8um6:@computed_region_rpca_8um6Number
BENCHMARK NUMBERbenchmark_numberbenchmark_numberNumber
NORTHINGnorthingnorthingNumber
ELEVATIONelevationelevationNumber
LOCATION DESCRIPTIONlocation_descriptionlocation_descriptionText
LOCATION DESCRIPTION 2location_description_2location_description_2Text
MARK DESCRIPTIONmark_descriptionmark_descriptionText
YEAR BENCHMARK ELEVATION FIXEDyear_benchmark_elevation_fixedyear_benchmark_elevation_fixedNumber
BOOK NUMBERbook_numberbook_numberNumber
LATITUDElatitudelatitudeNumber
LONGITUDElongitudelongitudeNumber
Community Areas:@computed_region_vrxf_vc4k:@computed_region_vrxf_vc4kNumber
Census Tracts:@computed_region_bdys_3d7i:@computed_region_bdys_3d7iNumber
EASTINGeastingeastingNumber
ESTIMATED LOCATIONestimated_locationestimated_locationPoint
ESTIMATED LOCATION (state)estimated_location_stateestimated_location_stateText
Historical Wards 2003-2015:@computed_region_awaf_s7ux:@computed_region_awaf_s7uxNumber

Upstream Metadata