Supporting data for the federal briefing, LMI, SVI, Justice 40, R/ECAP datasets.
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 |
221 matches (likely staff working copies and non-Houston research layers hidden)
Supporting data for the federal briefing, LMI, SVI, Justice 40, R/ECAP datasets.
Supporting data for the federal briefing, LMI, SVI, Justice 40, R/ECAP datasets.
FEMA FIRM Panels
FEMA NFHL Cross Sections
Floodplain Administrators for the MAAPNext Program
Floodplain_Preservation_by_Year
FWS Regional Channels in the HCFCD & SJRA Region.
Harris County Precinct Boundaries
HCAD City Limits
This is a customized version Harris County Parcels that includes estimated FFE elevations. The FFE elevation comes from two possible sources. If available, the elevation is copied from the parcels in the Structure Inventory dataset maintained by the Harris County Flood Control Di…
HC_ENG_Projects
Additional Project Areas
HCFCD All ROW
Appendix F Channels
HCFCD Regional Detention Basins
Points that show the general location of the bond id.
HCFCD_Bond_Project_Tracking_Gray
HCFCD_Bond_Project_Tracking_Gray
HCFCD_Channels_LinearReferencing
HCFCD_Channels_LinearReferencing
HCFCD_Channels_LinearReferencing
CIP Structural Community Input
CIP Structural Community Input Ellipse
CIP Structural Community Input Lines
CIP Structural Bond Points
HCFCD CIP Structural Cost Shared Detention Projects
HCFCD CIP Structural Cost Shared Linear Projects
CIP Structural Bond Points
HCFCD CIP Structural Local Only Detention Projects
HCFCD CIP Structural Local Only Linear Projects
HCFCD Corps of Eng Cost Shared Projects
HCFCD County Bond Mask
HCFCD Detention Basins
As of 03/09/2015, this dataset follows the new schema required for the submittal of geospatial data by FEMA. The FIRM is the basis for floodplain management,...
As of 03/09/2015, this dataset follows the new schema required for the submittal of geospatial data by FEMA. The FIRM is the basis for floodplain management, mitigation, and insurance activities for the National Flood Insurance Program (NFIP). Insurance applications include enfor…
Location of HCFCD Facilities
HCFCD FEMT Query Layer
HCFCD Flood Forecasting Layers
HCFCD Flood Forecasting Layers
HCFCD Flood Forecasting Layers
HCFCD Flood Forecasting Layers
HCFCD Flood Forecasting Layers
HCFCD Floodplain Reference Marks
Addicks and Barker Reservoirs Government Owned Land Boundaries and Lake Houston Boundary
Addicks and Barker Reservoirs Government Owned Land Boundaries and Lake Houston Boundary
HCFCD City Limits
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.