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)
[Administration and Regulatory Affairs] This dataset includes all service requests filed in BARC's work order management system (Chameleon). This system includes service requests filed by the public through 311 along...
[Administration and Regulatory Affairs] BARC Dog intakes for Calendar Years 2011 and 2012 and the associated outcomes. This dataset was used for a study by Rice University Computational and Applied Math Interns.
Trash cleanups data used in Galveston Bay Report Card. It's courtesy of Bayou Greenways.
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STOP Texas Litter sites. Updated: 01/25/2021
311 incoming calls related to Hurricane Beryl 0 7/8-10/2024
Hub keywords: DIR;Misc;Miscellaneous;Bikeways
Hub keywords: HPC;Billboards
Hub keywords: res;survey section
Texas extract of Census Blocks from the Census Bureau's 2020 Census Redistricting Data (P.L. 94-171) TIGER/Line® shapefile. All legal boundaries and names are as of January 1, 2020. The boundaries shown are for Census Bureau statistical data collection and tabulation purposes onl…
HCFCD BMP Data
HCFCD BMP Data
HCFCD BMP Data
HCFCD BMP Data
HCFCD BMP Data
HCFCD BMP Data
HCFCD BMP Data
HCFCD Bond Website - Judges Office
HCFCD Bond Website - Judges Office
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.