In the explorer
HWM20150526
High Water Marks - May 26, 2015
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)
High Water Marks - May 26, 2015
High Water Marks - April 18, 2016
High Water Marks - August 27, 2017
High Water Marks - September 09, 2019
Official HCFCD buyout areas (80) with priority rankings, % publicly owned, structures remaining
Centroid location of HCFCD Buyout Target Areas
Acreage_by_Interest
AcreageByPrecinct
AcreageByProgram
Acreage_by_Watershed
Active Construction Projects
Active Construction Projects
Mask for the Armand Bayou watershed
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
Fake Data
Bond Overview table for the January 2023 Bond Update to commissioners court.
Fake Data
Project overview table for the January 2023 Bond Update to commissioners court.
FAKE DATA TESTING ONLY
FAKE DATA TESTING ONLY
Bond Program Summary Report Projects for the Jan 31, 2023 Court Agenda.
Bond Program Summary Report Projects for the Jan 31, 2023 Court Agenda.
Bridge Adventures starring the iconic duo Nathan Alston and Max Gordon.
HCFCD City Limit Boundaries
City of Houston City Council Districts.
This data layer is defined by the City of Houston Planning and Development Department and maintained by Neighborhood Planning Division.
Mask for Clear Creek Watershed
Boundary of the Clear Creek watershed surrounding Harris County.
Regional Detention Basins for Clear Creek
Studied channels for Clear Creek watershed.
Points of interest within the Clear Creek watershed.
HCFCD County Boundaries
County boundaries created by HCFCD for mapping purposes.
County boundaries created by HCFCD for mapping purposes.
Mask for the Cypress Creek watershed.
Portion of Cypress Creek watershed outside Harris County boundary.
Drainage Network alignment. This channel centerline alignment is considered to be a draft product. This data is a refined version of the TSARP centerlines, adjustments were based on the 2018 LiDAR and 2021 Aerials. QA participants include Property Management, Special Projects, a…
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.
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.