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 |
2,869 matches (likely staff working copies and non-Houston research layers hidden)
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
COVID19
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.
Hub keywords: TDO;NTMP;Neighborhood Traffic Management Program;Traffic
Oil and Gas Pipelines
OLD_HOUSTON_HEIGHTS_PROJECT
OLD_HOUSTON_HEIGHTS_PROJECT
OMB_CIP_FY2025
FWS Gage locations that is used to generate the stream elevations service
Harris County ITC help center operator look up layers
Harris County ITC help center operator look up layers
Harris County ITC help center operator look up layers
Harris County ITC help center operator look up layers
Harris County ITC help center operator look up layers
Harris County ITC help center operator look up layers
Harris County ITC help center operator look up layers
Harris County ITC help center operator look up layers
Harris County ITC help center operator look up layers
Harris County ITC help center operator look up layers
Harris County ITC help center operator look up layers
Harris County ITC help center operator look up layers
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.