This feature layer contains a composite of control points collected from a variety of projects for Linn County, Iowa, the City of Cedar Rapids, and the City of Marion.Update FrequencyAs neededAdditional ResourcesVisit Linn County, Iowa on the web.Visit Linn County, Iowa GIS on the web.Visit the Linn County, Iowa GIS portal. This site is updated as needed to reflect maps, apps, and data of interest from various County departments.Contact InformationQuestions? Contact the GIS Division by phone at 319.892.5250 or by email.

This feature layer contains planimetric polygons located within Linn County, Iowa and outside the City of Cedar Rapids boundaries. Examples of features found within this layer may include:Building footprintsSidewalksDrivewaysEdge of road pavementPaved parkingFor planimetric data within the City of Cedar Rapids boundaries, please contact the City GIS department.Update FrequencyApproximately once a monthAdditional ResourcesVisit Linn County, Iowa on the web.Visit Linn County, Iowa GIS on the web.Visit the Linn County, Iowa GIS portal. This site is updated as needed to reflect maps, apps, and data of interest from various County departments.Contact InformationQuestions? Contact the GIS Division by phone at 319.892.5250 or by email.

A map highlighting damage to the Cedar Rapids, IA, area from the August 10, 2020, Midwest Derecho event. Polygons showing maximum estimated wind gusts. Points showing specific areas of damage and estimated wind speeds.Point locations are from National Weather Service damage surveys or information shared with the National Weather Service after the event. Polygon wind contours represent an estimate of maximum wind gusts produced using a combination of weather station observations, damage reports, and storm surveys.This map is used by the August 10, 2020, Midwest Derecho story map:https://storymaps.arcgis.com/stories/f98352e2153b4865b99ba53b86021b65/

This feature layer contains Linn County, Iowa 2 foot contours.These contour lines were generated from a 2016 LiDAR project. LiDAR collection covering the City of Cedar Rapids was collected at approximately 3 foot spacing, and the rest of the County was collected at approximately 6 foot spacing.The Elevation field within this feature layer represents the elevation above sea level in feet.The Index Contour field within this feature layer represents whether the feature is a 10 foot contour line.Update FrequencyAs neededAdditional ResourcesVisit Linn County, Iowa on the web.Visit Linn County, Iowa GIS on the web.Visit the Linn County, Iowa GIS portal. This site is updated as needed to reflect maps, apps, and data of interest from various County departments.Contact InformationQuestions? Contact the GIS Division by phone at 319.892.5250 or by email.

This historic feature layer contains Linn County, Iowa 5 foot contours created in 2000.These contour lines were generated from a DEM created in 2000 during a Linn County and Cedar Rapids Orthoimagery project with Surdex.The Elevation field within this feature layer represents the elevation above sea level in feet.Update FrequencyNone, this data is an archive.Additional ResourcesVisit Linn County, Iowa on the web.Visit Linn County, Iowa GIS on the web.Visit the Linn County, Iowa GIS portal. This site is updated as needed to reflect maps, apps, and data of interest from various County departments.Contact InformationQuestions? Contact the GIS Division by phone at 319.892.5250 or by email.

This feature layer contains FEMA flood zones within Linn County, Iowa and surrounding counties.*** Note ***This information is sourced from FEMA. For current FEMA information, please see official FEMA data.Update FrequencyAs neededAdditional ResourcesVisit Linn County, Iowa on the web.Visit Linn County, Iowa GIS on the web.Visit the Linn County, Iowa GIS portal. This site is updated as needed to reflect maps, apps, and data of interest from various County departments.Contact InformationQuestions? Contact the GIS Division by phone at 319.892.5250 or by email.

This historic feature layer contains Linn County, Iowa 5 foot contours created in 2005.These contour lines were generated from a DEM updated in 2005 during a Linn County and Cedar Rapids Orthoimagery project with Sanborn.The Elevation field within this feature layer represents the elevation above sea level in feet.Update FrequencyNone, this data is an archive.Additional ResourcesVisit Linn County, Iowa on the web.Visit Linn County, Iowa GIS on the web.Visit the Linn County, Iowa GIS portal. This site is updated as needed to reflect maps, apps, and data of interest from various County departments.Contact InformationQuestions? Contact the GIS Division by phone at 319.892.5250 or by email.

This historic feature layer contains Linn County, Iowa 2 foot contours created in 2010.These contour lines were generated from a 2010 LiDAR project where LiDAR collection covering the City of Cedar Rapids was collected at approximately 3 foot spacing, and the rest of the County was collected at approximately 6 foot spacing.The Elevation field within this feature layer represents the elevation above sea level in feet.The Index Contour field within this feature layer represents whether the feature is a 10 foot index contour line.Update FrequencyNone, this data is an archive.Additional ResourcesVisit Linn County, Iowa on the web.Visit Linn County, Iowa GIS on the web.Visit the Linn County, Iowa GIS portal. This site is updated as needed to reflect maps, apps, and data of interest from various County departments.Contact InformationQuestions? Contact the GIS Division by phone at 319.892.5250 or by email.

A map highlighting damage to the Cedar Rapids, IA, area from the August 10, 2020, Midwest Derecho event. Polygons showing maximum estimated wind gusts. Points showing specific areas of damage and estimated wind speeds.Point locations are from National Weather Service damage surveys or information shared with the National Weather Service after the event. Polygon wind contours represent an estimate of maximum wind gusts produced using a combination of weather station observations, damage reports, and storm surveys.This map is used by the August 10, 2020, Midwest Derecho story map:https://storymaps.arcgis.com/stories/f98352e2153b4865b99ba53b86021b65/