Hydrology Polygons 2007

Download In State Plane Projection Here.

This dataset represents the water feature areas (for example, lakes and ponds) of Lake County, Illinois. The features captured in this polygon dataset include: lakes, ponds, detention/retention basins, river/streams/creeks greater than five feet wide, and islands.

The data has not been field verified and errors and/or omissions may be present.

The names used for the water bodies were collected from a number of sources including: existing datasets, historic maps and/or atlases, US Geologic Survey (USGS) Geographic Names Information System (GNIS), current and historical USGS topographic quadrangle maps, local publications on place names within the county, and platted subdivisions.

The dataset was traced from aerial photography captured spring 2007. The water features were compiled using softcopy analytical stereoplotters. This dataset should meet National Map Accuracy Standards for a 1:1200 product and it is georeferenced to the Illinois State Plane, Eastern Zone, using the NAD83 HARN horizontal datum.

Data and Resources

Field	Value
accessLevel	public
catalog_@context	https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_conformsTo	https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy	https://project-open-data.cio.gov/v1.1/schema/catalog.json
identifier	https://data-lakecountyil.opendata.arcgis.com/maps/lakecountyil::hydrology-polygons-2007
issued	2020-12-15T18:19:50.000Z
landingPage	https://data-lakecountyil.opendata.arcgis.com/maps/lakecountyil::hydrology-polygons-2007
license	https://www.arcgis.com/sharing/rest/content/items/89679671cfa64832ac2399a0ef52e414/data
metadata_type	geospatial
modified	2022-03-15T14:50:44.167Z
old-spatial	-88.1994,42.1537,-87.7870,42.4947
publisher	Lake County Illinois GIS
resource-type	Dataset
source_datajson_identifier	true
source_hash	a6ccd0bf9450258f99cbf5c1220ab41fe8940a94
source_schema_version	1.1
spatial	{"type": "Polygon", "coordinates": [[[-88.1994, 42.1537], [-88.1994, 42.4947], [-87.7870, 42.4947], [-87.7870, 42.1537], [-88.1994, 42.1537]]]}
theme	{geospatial}
Groups	AmeriGEOSS National Provider North America
Tags	amerigeo amerigeoss ckan geo geoss hydrology lake-county-illinois national north-america surface-water surface-water-spatial-data united-states water
isopen	False
license_id	other-license-specified
license_title	other-license-specified
maintainer	LakeCounty_Illinois
maintainer_email	gis@lakecountyil.gov
metadata_created	2025-11-22T02:40:27.956635
metadata_modified	2025-11-22T02:40:27.956639
notes	<p style='margin-top:0px; margin-bottom:1.5rem; font-family:"Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px;'><b><a href='https://s3.amazonaws.com/lakecountygis-public/water/hydrology2007.zip' rel='nofollow ugc' style='color:rgb(0, 121, 193); text-decoration-line:none; font-family:inherit;' target='_blank'>Download In State Plane Projection Here</a>. </b><br /></p><p style='margin-top:0px; margin-bottom:1.5rem; font-family:"Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px;'></p><p style='margin-top:0px; margin-bottom:1.5rem; font-family:"Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px;'>This dataset represents the water feature areas (for example, lakes and ponds) of Lake County, Illinois. The features captured in this polygon dataset include: lakes, ponds, detention/retention basins, river/streams/creeks greater than five feet wide, and islands.</p><p style='margin-top:0px; margin-bottom:1.5rem; font-family:"Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px;'>The data has not been field verified and errors and/or omissions may be present.</p><p style='margin-top:0px; margin-bottom:1.5rem; font-family:"Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px;'>The names used for the water bodies were collected from a number of sources including: existing datasets, historic maps and/or atlases, <a href='https://geonames.usgs.gov/' rel='nofollow ugc' target='_blank'>US Geologic Survey (USGS) Geographic Names Information System (GNIS)</a>, current and historical USGS topographic quadrangle maps, local publications on place names within the county, and platted subdivisions.</p><p style='margin-top:0px; margin-bottom:1.5rem; font-family:"Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px;'>The dataset was traced from aerial photography captured spring 2007. The water features were compiled using softcopy analytical stereoplotters. This dataset should meet National Map Accuracy Standards for a 1:1200 product and it is georeferenced to the Illinois State Plane, Eastern Zone, using the NAD83 HARN horizontal datum.</p>
num_resources	6
num_tags	13
title	Hydrology Polygons 2007