Geospatial data about St. Clair County, Alabama Parcels. Export to CAD, GIS, PDF, CSV and access via API.

2017 TIGER/Line® Shapefiles: Roads

Definition/Description

Flood hazard areas identified on the Flood Insurance Rate Map are identified as a Special Flood Hazard Area (SFHA). SFHA are defined as the area that will be inundated by the flood event having a 1-percent chance of being equaled or exceeded in any given year. The 1-percent annual chance flood is also referred to as the base flood or 100-year flood. SFHAs are labeled as Zone A, Zone AO, Zone AH, Zones A1-A30, Zone AE, Zone A99, Zone AR, Zone AR/AE, Zone AR/AO, Zone AR/A1-A30, Zone AR/A, Zone V, Zone VE, and Zones V1-V30. Moderate flood hazard areas, labeled Zone B or Zone X (shaded) are also shown on the FIRM, and are the areas between the limits of the base flood and the 0.2-percent-annual-chance (or 500-year) flood. The areas of minimal flood hazard, which are the areas outside the SFHA and higher than the elevation of the 0.2-percent-annual-chance flood, are labeled Zone C or Zone X (unshaded).Visit our website

Geospatial data about St. Clair County, Alabama Buildings. Export to CAD, GIS, PDF, CSV and access via API.

These data provide an accurate high-resolution shoreline compiled from imagery of DETROIT RIVER, LAKE ST CLAIR TO LAKE ERIE, MI-ONT . This vector shoreline data is based on an office interpretation of imagery that may be suitable as a geographic information system (GIS) data layer. This metadata describes information for both the line and point shapefiles. The NGS attribution scheme 'Coastal...

Geospatial data about St. Clair County, Alabama Streams & Rivers. Export to CAD, GIS, PDF, CSV and access via API.

Lake St. Clair ShorelineMore Metadata

Geospatial data about St. Clair County, Alabama Lakes & Ponds. Export to CAD, GIS, PDF, CSV and access via API.

Geospatial data about St. Clair County, Alabama Fire Stations. Export to CAD, GIS, PDF, CSV and access via API.

Lake St. Clair Bathymetric ContoursMore Metadata

A bathymetric layer for Lake Saint Clair. NOAA is engaged in a program to compile Great Lakes bathymetric data and make them readily available to the public, especially to the communities concerned with Great Lakes science, pollution, coastal erosion, response to climate changes, threats to lake ecosystems, and health of the fishing industry. This program is managed by NGDC and it relies on the cooperation of NOAA/Great Lakes Environmental Research Laboratory, NOAA/National Ocean Service, the Canadian Hydrographic Service, other agencies, and academic laboratories. Compilation of new bathymetry for the Great Lakes is an important part of this program, being carried out cooperatively between NOAA (NGDC and GLERL), and the Canadian Hydrographic Service. This new bathymetry provides a more detailed portrayal of lakefloor topography, and reveals some lakefloor features seen for the first time.Date: 2006-10-02

Michigan DNR Fisheries Division hydroacoustic survey data (2003-2011) were collected annually at survey stations in Lake St. Claire to document the abundance and distribution of submerged aquatic vegetation. The hydrouacoustic surveys at each station consisted of 11 parallel east-west boat transects spaced 10 m apart within a square hectare plot. Not all survey stations were sampled every year; to allow for sufficient data for mapping, sonar records across multiple years were compiled and averaged on a per station basis. Plant height, percent of lake bottom covered by aquatic plants and percent of water column containing plant biomass interpolated layers were generated from this data using ordinary kriging and the ArcGIS Geostatistical Analyst. The MDNR Fisheries Research Report 2099, documenting hydroacoustic survey methods and results from the years 2003-2007. Kriging parameters are as follows: SAV_mean_per_cover_2003_2007; no transformations, no trend removal; Gaussian semivariogram model, nugget = 745, major range = 9902, partial sill = 579, number of lags = 12, lag size = 1089; smooth search neighborhood, smoothing factor = 0.1

The TIGER/Line shapefiles and related database files (.dbf) are an extract of selected geographic and cartographic information from the U.S. Census Bureau's Master Address File / Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) Database (MTDB). The MTDB represents a seamless national file with no overlaps or gaps between parts, however, each TIGER/Line File is designed to stand alone as an independent data set, or they can be combined to cover the entire nation. The Area Hydrography Shapefile contains the geometry and attributes of both perennial and intermittent area hydrography features, including ponds, lakes, oceans, swamps (up to the U.S. nautical three-mile limit), glaciers, and the area covered by large rivers, streams, and/or canals that are represented as double-line drainage. Single-line drainage water features can be found in the Linear Hydrography Shapefile (LINEARWATER.shp). Linear water features includes single-line drainage water features and artificial path features, where they exist, that run through double-line drainage features such as rivers, streams, and/or canals, and serve as a linear representation of these features.

Soil SurveyThis map shows the Soil Survey Geographic (SSURGO) by the United States Department of Agriculture's Natural Resources Conservation Service. It also shows data that was developed by the National Cooperative Soil Survey and supersedes the State Soil Geographic (STATSGO) dataset published in 1994. SSURGO digitizing duplicates the original soil survey maps. This level of mapping is designed for use by landowners, townships, and county natural resource planning and management. The user should be knowledgeable of soils data and their characteristics. The smallest scale map shows the Global Soil Regions map by the United States Department of Agriculture’s Natural Resources Conservation Service.Length of Growing PeriodLength of growing period is defined as the period during the year when average temperatures are greater than or equal to 5oC (Tmean >=5o C) and precipitation plus moisture stored in the soil exceed half the potential evapotranspiration (P>0.5PET). A normal growing period is defined as one when there is an excess of precipitation over pet (i.e. a humid period). Such a period meets the full evapotransiration demands of crops and replenishes the moisture definite of the soil profile. An intermediate growing period is defined as one in which precipitation does not normally exceed PET but does for part of the year. No growing period is when temperatures are not conducive to crop growth or P never exceeds PET (FAO 1978). Determining LGP is a difficult process that requires extensive calculations based on precipitation, evapotranspiration and soil moisture holding capacity. It also requires an understanding of the moisture requirements of specific crops since the growing period for many extends beyond the rainy season. Coarse resolution LGP data is available as part of IIASA/FAO’s initial GAEZ project (IIASA/FAO 2001). Geology UnitsThe geologic units in this layer depict formations at or near the surface. The emphasis is on pre-Quaternary geology, so Quaternary surficial deposits are shown only where they completely conceal the underlying units in significant areas. The extensive glacial deposits of the continental interior and Canadian shield are not shown, but Quaternary surficial deposits are shown in the intermontane basins in the Cordillera, in parts of the Atlantic and Gulf coastal plains, and in the Orinoco basin.Geology correlates closely with soil, elevation, vegetation, and ecosystems. It also used as a precedent for where there might be deposits of valuable resources. This dataset is not fine enough in scale for use for large scale analytical purposes, but can be used as context for visual analysis in conjunction with other data that may show correlations and trends.

The TIGER/Line shapefiles and related database files (.dbf) are an extract of selected geographic and cartographic information from the U.S. Census Bureau's Master Address File / Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) Database (MTDB). The MTDB represents a seamless national file with no overlaps or gaps between parts, however, each TIGER/Line shapefile is designed to stand alone as an independent data set, or they can be combined to cover the entire nation.

Linear Water Features includes single-line drainage water features and artificial path features that run through double-line drainage features such as rivers and streams, and serve as a linear representation of these features. The artificial path features may correspond to those in the USGS National Hydrographic Dataset (NHD). However, in many cases the features do not match NHD equivalent feature and will not carry the NHD metadata codes. These features have a MAF/TIGER Feature Classification Code (MTFCC) beginning with an "H" to indicate the super class of Hydrographic Features.

BY USING THIS WEBSITE OR THE CONTENT THEREIN, YOU AGREE TO THE TERMS OF USE. The project consisted of color digital aerial imagery acquisition and color digital orthophoto production at 0.5-foot ground sample distance (GSD) for Oakland County (approximately 907 square miles). The aerial photography plan and the 2, 500 foot x 2, 500 foot digital orthophoto tiles were based on the SEMCOG approved Tile system, based upon the State Plane Grid.

In the Spring of 2010, Southeast Michigan Council of Government (SEMCOG) obtained new orthoimagery for all seven of the membership counties - Livingston, Macomb, Monroe, Oakland, Washtenaw, Wayne, and St. Clair.

Annexation boundaries, dates and related information for O'Fallon, Illinois.

By using this data, you agree to the SEMCOG Copyright License Agreement. 1-foot elevation contour lines for St. Clair County, Michigan, stored in file geodatabase format. Created from LiDAR data collected in 2017-2018.

This dynamic World Elevation Terrain (ID = 58a541efc59545e6b7137f961d7de883) layer returns float values representing ground heights in meters and compiles multi-resolution data from many authoritative data providers from across the globe. Heights are orthometric (sea level = 0), and water bodies that are above sea level have approximated nominal water heights. This Group Layer presents the shared transboundary drainage basins between the United States and Canada, offering a visual overview of hydrologic connectivity across the international border. Each basin polygon reflects authoritative delineations from federal and binational sources, providing consistent spatial definitions of major watershed boundaries that flow between both nations.

To provide geographic context, the basin boundaries are overlaid on the Living Atlas World Terrain Shaded Relief basemap. This shaded relief visualization enhances the understanding of basin topography, elevation gradients, and landscape features influencing water flow and watershed delineation.This Group Layer is designed to support cross-border water governance, transboundary watershed management, and policy discussions led by entities such as the International Joint Commission (IJC) and its affiliated Boards and Studies. It may be used as a foundational geographic reference in dashboards, applications, or other GIS analyses that require a harmonized view of U.S.–Canada watershed geography.

Components:

Shared Basin Boundaries Layer (Polygon): Generalized delineations of transboundary basins

Living Atlas World Terrain (Shaded Relief): Provides elevation-based terrain context for intuitive map reading

Use Cases:Visualizing international hydrologic connectivity

Supporting transboundary water policy discussions

Enhancing storytelling in public-facing applications

Providing context for environmental monitoring or modeling initiatives across the U.S.–Canada border

Map Flint - Feature Service layer(s) : ACS5YR 2011-2015 estimates for St. Clair County, Michigan, USA by county of Tenure by Vehicles Available.

Data Dictionary: https://mapflint.org/dictionaries/2015_St_Clair_by_county_ACS5YR_Tenure_by_Vehicles_Available_vars015_data_dictionary.pdf

Note: Layer(s) not initially visible and must be turned on.

This feature layer is an American Community Survey (ACS) estimate (U.S. Census Bureau) that is derived from the National Historical Geographic Information System (NHGIS) and has been customized for various Map Flint analyses and projects pertaining to the City of Flint, Genesee County, Michigan U.S.A. and other surrounding counties - e.g., counties and communities in the greater Flint vicinity that also overlap with the mission of the University of Michigan-Flint EDA University Center for Community and Economic Development. All NHGiS layers in Map Flint projects maintain the uniquely-valued GISJOIN geographic ID assigned by the NHGIS in order to work with multiple data sets.

For more information, visit https://mapflint.org