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snippet: Updated 20250814 with 2025 data
summary: Updated 20250814 with 2025 data
accessInformation:
thumbnail:
maxScale: 18025.282035439803
typeKeywords: ["ArcGIS Server","Data","Image Service","Service"]
description: <span style='color:oklch(0.304 0.04 213.681); font-family:__fkGroteskNeue_598ab8, __fkGroteskNeue_Fallback_598ab8, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, &quot;Segoe UI&quot;, Roboto, &quot;Helvetica Neue&quot;, Arial, &quot;Noto Sans&quot;, sans-serif, &quot;Apple Color Emoji&quot;, &quot;Segoe UI Emoji&quot;, &quot;Segoe UI Symbol&quot;, &quot;Noto Color Emoji&quot;; font-size:16px; background-color:oklch(0.99 0.004 106.471);'>The Cook County Bureau of Technology (BOT) and the U.S. Geological Survey (USGS) have collaborated on a comprehensive project to survey and map selected surface water bodies in Cook County, Illinois. This initiative addresses critical needs in surface-water and storm water management, emergency response, construction permitting, and aquatic habitat research. The carefully selected water bodies were surveyed based on size, accessibility, existing data availability, and current usage. The project involved collecting, processing, and analyzing bathymetric data and ancillary water-quality information. Notably, the collected data has been meticulously preprocessed into high-resolution lake polygons and detailed 2-foot interval contours. By combining cutting-edge data collection techniques with advanced preprocessing methods, this project sets a new standard for aquatic mapping in urban areas, ultimately contributing to more sustainable and effective water management practices in Cook County.</span>
licenseInfo:
catalogPath:
title: bathymetric_survey_3m_depth_surfaces_raster
type: Image Service
url: https://gis.cookcountyil.gov/imagery
tags: ["bathymetric_survey_3m_depth_surfaces_raster","ImageServer"]
culture: en-US
portalUrl:
name: bathymetric_survey_3m_depth_surfaces_raster
guid:
minScale: 576809.0251340737
spatialReference: NAD_1983_StatePlane_Illinois_East_FIPS_1201_Feet