Not loaded
Houston and Harris County publish a huge amount of open data, scattered across dozens of portals nobody tracks. This catalog lists every dataset we've found in one place, whether or not it's loaded into the explorer. Know a source we're missing? Add it, and it's shared with everyone.
| Source | What it is | Items | Loaded |
|---|---|---|---|
| Harris County ArcGIS Online services.arcgis.com |
One organization shared by county departments, precincts and staff. Mixes authoritative layers (fire stations, parks, crashes) with many working copies and one-off maps; review before use. | 3,112 | 16 |
| Rice University ArcGIS Online services.arcgis.com |
Research and class projects. Houston gems (HCFCD buyout lots, draft 2026 FEMA flood map, historical census, redlining) among worldwide student work. Research copies of agency data need permission before reuse. | 2,888 | 0 |
| Houston Advanced Research Center (HARC) ArcGIS Online services2.arcgis.com |
Environmental and regional research layers; source of the 2021 city cool-center list. | 528 | 1 |
| City of Houston GIS (ArcGIS Hubs) geohub.houstontx.gov |
Two Hub sites (Public Works geohub, citywide mycity) over several ArcGIS servers. Official. | 314 | 119 |
| Harris County Flood Control District ArcGIS Online services2.arcgis.com |
High-water marks, floodplains, projects, acreage by program. Source of the storm HWM layers. | 265 | 4 |
| City of Houston Open Data (data.houstontx.gov) data.houstontx.gov |
Separate from the GIS hubs. Mostly spreadsheets; finance (checkbook, payroll, budget) and census stay current, much else frozen since a 2023 migration. | 94 | 0 |
| U.S. Census Bureau api.census.gov |
4 | 3 | |
| FEMA (OpenFEMA and National Flood Hazard Layer) www.fema.gov |
4 | 3 | |
| U.S. Environmental Protection Agency data.epa.gov |
2 | 2 | |
| Centers for Disease Control and Prevention data.cdc.gov |
2 | 2 | |
| Texas Commission on Environmental Quality www.tceq.texas.gov |
2 | 1 | |
| Texas Water Development Board www.twdb.texas.gov |
1 | 1 | |
| U.S. Geological Survey water data waterservices.usgs.gov |
1 | 0 | |
| City of Houston 311 public data extracts www.houstontx.gov |
1 | 1 | |
| METRO (Harris County transit) www.ridemetro.org |
1 | 0 | |
| Stanford Open Policing Project openpolicing.stanford.edu |
1 | 0 | |
| TxDOT Crash Records Information System (CRIS) cris.dot.state.tx.us |
1 | 0 |
505 matches (likely staff working copies and non-Houston research layers hidden)
Houston Parks and Recreation Department proposed nature preserves.
Houston Parks and Recreation Department Parks.
Houston Parks and Recreation Department prairie restoration sites.
USGS HUC10 Summary Stats in all classes and all years.
USGS HUC12 Summary Stats in all classes and all years.
USGS HUC6 Summary Stats in all classes and all years.
USGS HUC8 Summary Stats in all classes and all years.
These HUD-provided data are the Low and Moderate Income Summary Data LMISD based on special tabulations of 2011-2015 American Community Survey (ACS) joined to the 2015 National Geodatabase from the U.S. Census Bureau. FY 2021.
Low-Income Housing Tax Credit Qualified Census Tracts must have 50 percent of households with incomes below 60 percent of the Area Median Gross Income (AMGI) or have a poverty rate of 25 percent or more. Difficult Development Areas (DDA) are areas with high land, construction and…
Pre and post Hurricane Harvey (8/01/2017-9/26/2017) Ozone data for TCEQ Region 12. Counties: Austin, Brazoria, Chambers, Colorado, Fort Bend, Galveston, Harris, Liberty, Matagorda, Montgomery, Walker, Waller, Wharton.
The hurricane observations data is merged by two data sources - NHC best track(2009-2017) and IBTrACS (1851-2008).
The hurricane tracks data is merged by two data sources - NHC best track(2009-2017) and IBTrACS (1851-2008).
This map layer depicts the climate zone designations used by the U.S. Department of Energy Building America Program by county boundaries (detailed).
FEMA IHP applicants data. It shows the number of owners/renters and applications/approvals for each impacted census block group in hurricane Harvey.
JPB project study area.
The community tabulation areas (CTAs) developed by the Kinder Institute are designed to serve as approximations of neighborhoods, based specifically on census geographic boundaries, to facilitate the aggregation of census data to geographies larger than census tracts, but smaller…
The dataset includes publicly accessible, K-12 & College, and Special Access Required Coastal Prairie.
The dataset includes publicly accessible, K-12 & College, and Special Access Required Coastal Prairie.
SWQM sampling stations in the Lake Livingston area (Lower Trinity-Kickapoo - HUC 8 watershed). Sys_Class field is defined by HARC. Sampling stations are sites where surface water quality data are collected by the TCEQ and its partner agencies (such as the Clean Rivers Program, US…
Vegetation Canopy Coverage by Census Tract.
Known locations of Low Impact Development projects in the greater Houston-Galveston region.
The Land & Water Resources Conservation & Recreation Plan statewide properities inventory.
Centerpoint, Entergy, Oncor, and Pedernales boundaries from HIFLD (https://harcresearch.maps.arcgis.com/sharing/rest/content/items/f4cd55044b924fed9bc8b64022966097/info/metadata/metadata.xml?format=default&output=html) . Austin Energy boundary is from Austin Energy. CPS Energy (h…
Montgomery County Commissioner Precincts.
Municipal Utility District (MUD) boundaries in Montgomery County, Texas. Updated October 4, 2021.
NBS project locations.
NBS project locations.
Yearly averages for 2011 of summer temperature and heat index variables by Harris County Census Tracts.
Yearly averages for 2012 of summer temperature and heat index variables by Harris County Census Tracts.
Yearly averages for 2013 of summer temperature and heat index variables by Harris County Census Tracts.
Yearly averages for 2014 of summer temperature and heat index variables by Harris County Census Tracts.
Yearly averages for 2015 of summer temperature and heat index variables by Harris County Census Tracts.
Yearly averages for 2016 of summer temperature and heat index variables by Harris County Census Tracts.
This data was created for the purpose of identifying North American Electric Reliability Corporation (NERC) Regions.
Summary statistics for Texas Counties with the high resolution NOAA CCAP 2021.
The ESI data were collected, mapped, and digitized to provide environmental data for oil spill planning and response.
The ESI data were collected, mapped, and digitized to provide environmental data for oil spill planning and response.
The ESI data were collected, mapped, and digitized to provide environmental data for oil spill planning and response.
The ESI data were collected, mapped, and digitized to provide environmental data for oil spill planning and response.
The ESI data were collected, mapped, and digitized to provide environmental data for oil spill planning and response.
Flower Garden Banks National Marine Sanctuary Boundary.
eBird trends data. Each 27km x 27km region is represented by a circle polygon scaled by the relative abundance. For more info, please check https://science.ebird.org/en/status-and-trends/faq
The dataset includes the integration of easement boundaries and their accompanying tabular data from the National Easements Staging Tool(NEST) database
Output generated from running the Join Features analysis tool.
Found Houston or Harris County open data we don't list? A portal, a map service, a spreadsheet on an agency page, a research dataset? Tell us where it is. Reviewed suggestions are added to the catalog for everyone.