Houston Open Data Explorer

Houston Open Data Catalog

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.

7,221datasets and layers found
17portals and publishers
153loaded and joinable in the explorer
Where the data lives (17 sources)
SourceWhat it isItemsLoaded
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. 3,11216
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. 2,8880
Houston Advanced Research Center (HARC) ArcGIS Online
services2.arcgis.com
Environmental and regional research layers; source of the 2021 city cool-center list. 5281
City of Houston GIS (ArcGIS Hubs)
geohub.houstontx.gov
Two Hub sites (Public Works geohub, citywide mycity) over several ArcGIS servers. Official. 314119
Harris County Flood Control District ArcGIS Online
services2.arcgis.com
High-water marks, floodplains, projects, acreage by program. Source of the storm HWM layers. 2654
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. 940
U.S. Census Bureau
api.census.gov
43
FEMA (OpenFEMA and National Flood Hazard Layer)
www.fema.gov
43
U.S. Environmental Protection Agency
data.epa.gov
22
Centers for Disease Control and Prevention
data.cdc.gov
22
Texas Commission on Environmental Quality
www.tceq.texas.gov
21
Texas Water Development Board
www.twdb.texas.gov
11
U.S. Geological Survey water data
waterservices.usgs.gov
10
City of Houston 311 public data extracts
www.houstontx.gov
11
METRO (Harris County transit)
www.ridemetro.org
10
Stanford Open Policing Project
openpolicing.stanford.edu
10
TxDOT Crash Records Information System (CRIS)
cris.dot.state.tx.us
10

505 matches (likely staff working copies and non-Houston research layers hidden)

Houston Advanced Research Center (HARC) ArcGIS Online · layer · polygon

Solar potential for the opportunity zones in Texas MSA. The supplementary demographic data is from ACS 2013-2017.

Not loaded

PACE Districts

Houston Advanced Research Center (HARC) ArcGIS Online · layer · polygon

Boundaries of the PACE regions. Some boundaries have been simplified for better cartographic rendering.

Not loaded

PACE Regions

Houston Advanced Research Center (HARC) ArcGIS Online · layer · polygon

Boundaries of the PACE regions for refreshed PACE tool in 2024. Some boundaries have been simplified for better cartographic rendering.

Not loaded

PACE Regions Stats

Houston Advanced Research Center (HARC) ArcGIS Online · layer · polygon

Boundaries of the PACE regions for refreshed PACE tool in 2024. Some boundaries have been simplified for better cartographic rendering.

Not loaded

Protected Areas

Houston Advanced Research Center (HARC) ArcGIS Online · layer · polygon

Combined USGS PAD-US geodatabase and TPWD LWRCRP property for H2B Riparian Corridors project.

Houston Advanced Research Center (HARC) ArcGIS Online · layer · polyline

Water utility facility lines as submitted to the PUCT. Updated 10/2020.

Houston Advanced Research Center (HARC) ArcGIS Online · layer · polygon

Water utility boundaries and facility lines as submitted to the PUCT. Updated 10/2020.

Houston Advanced Research Center (HARC) ArcGIS Online · layer · polygon

This folder includes climate data processed from grid level to 9-county level.

Houston Advanced Research Center (HARC) ArcGIS Online · layer · polygon

CCAP Land Cover summary statistics for 22 classes.

Houston Advanced Research Center (HARC) ArcGIS Online · table

RMD NOAA CCAP Land Cover summary stats table.

Houston Advanced Research Center (HARC) ArcGIS Online · table

RMD NOAA CCAP Land Cover summary stats table.

Houston Advanced Research Center (HARC) ArcGIS Online · table

RMD Commercial Harvest table.

Houston Advanced Research Center (HARC) ArcGIS Online · table

RMD Commercial Landings table.

Not loaded

RMD Counties

Houston Advanced Research Center (HARC) ArcGIS Online · layer · polygon

Counties within the RMD study area.

Not loaded

RMD Fish CPUE Year

Houston Advanced Research Center (HARC) ArcGIS Online · table

The Catch Per Unit Effort (CPUE) was calculated by HARC using long-term coastal fisheries data from the Marine Resource Monitoring Program within the Galveston Bay system to produce a relative measure of abundance for annual periods.

Houston Advanced Research Center (HARC) ArcGIS Online · table

RMD NOAA CCAP Land Cover and USGS NLCD Imperviousness stats table.

Houston Advanced Research Center (HARC) ArcGIS Online · table

RMD USGS NLCD Imperviousness stats table.

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RMD TCEQ SWQM Trash

Houston Advanced Research Center (HARC) ArcGIS Online · layer · point

TCEQ SWQM Sampling stations for trash related records. 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 Geological Survey, Texas State Soil and Water Conservation Board, or the T…

Not loaded

RMD TPWD Creel

Houston Advanced Research Center (HARC) ArcGIS Online · table

The Galveston Bay Regional Monitoring Database (RMD) is an interactive portal that provides quality assured data related to the conservation and management of Galveston Bay.

Not loaded

RMD TPWD Creel Unq

Houston Advanced Research Center (HARC) ArcGIS Online · table
Houston Advanced Research Center (HARC) ArcGIS Online · table

Ecological Mapping Systems data documents the distribution and quantity of natural and human influenced vegetation communities and land uses in Texas. HARC clipped the data into the RMD study area. Summary statistics table.

Houston Advanced Research Center (HARC) ArcGIS Online · table

Estimated total freshwater inflows to the Trinity-San Jacinto Estuary (Galveston Bay) in acre-feet by and year.

Houston Advanced Research Center (HARC) ArcGIS Online · table

The water level of groundwater wells measured as depth of water in feet below land surface.

Houston Advanced Research Center (HARC) ArcGIS Online · table

Groundwater well water quality sampling values for analyzed constituents including parameters identified as priority contaminants and associated health threat levels.

Houston Advanced Research Center (HARC) ArcGIS Online · table

Geographic locations of groundwater wells along with well attributes including aquifer information, total well depth, and well use.

Houston Advanced Research Center (HARC) ArcGIS Online · table

Groundwater wells along with water quality and water level information.

Not loaded

RMD TxGLO Spills

Houston Advanced Research Center (HARC) ArcGIS Online · table

A threat is a spill or release that did not hit coastal water. Examples are a spilled bucket on the deck of a vessel; a vessel pipe leak on board; an internal spill on a boat, or a sunken vessel in which there is a possibility of fuel onboard. A threat can also occur within a fac…

Houston Advanced Research Center (HARC) ArcGIS Online · table

The Galveston Bay Regional Monitoring Database (RMD) is an interactive portal that provides quality assured data related to the conservation and management of Galveston Bay.

Houston Advanced Research Center (HARC) ArcGIS Online · table

The Galveston Bay Regional Monitoring Database (RMD) is an interactive portal that provides quality assured data related to the conservation and management of Galveston Bay.

Houston Advanced Research Center (HARC) ArcGIS Online · table

The Galveston Bay Regional Monitoring Database (RMD) is an interactive portal that provides quality assured data related to the conservation and management of Galveston Bay.

Not loaded

RMD USGS NAS

Houston Advanced Research Center (HARC) ArcGIS Online · layer · point

Spatially referenced biogeographic accounts of nonindigenous or invasive aquatic species observations.

Not loaded

RMD Watersheds

Houston Advanced Research Center (HARC) ArcGIS Online · layer · polygon

RMD watersheds. It combines updated GBEP and four HUC 10 watersheds.

Houston Advanced Research Center (HARC) ArcGIS Online · layer · polygon

RMD watersheds and subbays. It combines updated GBEP, four HUC 10 watersheds, and GBEP subbays.

Not loaded

RMD WQ Combined

Houston Advanced Research Center (HARC) ArcGIS Online · table

RMD combined water quality datasets.

Not loaded

RMD WQ Tissue

Houston Advanced Research Center (HARC) ArcGIS Online · table

RMD water quality Tissue datasets.

Not loaded

SFA 2

Houston Advanced Research Center (HARC) ArcGIS Online · layer · polygon

Feature layer generated from running the Merge Layers analysis tool.

Not loaded

SFA Contractors

Houston Advanced Research Center (HARC) ArcGIS Online · layer · point
Not loaded

SFA Texas

Houston Advanced Research Center (HARC) ArcGIS Online · layer · polygon
Houston Advanced Research Center (HARC) ArcGIS Online · layer · polygon
Houston Advanced Research Center (HARC) ArcGIS Online · layer · polyline

The ESI data were collected, mapped, and digitized to provide environmental data for oil spill planning and response.

Not loaded

SOTB Study Area

Houston Advanced Research Center (HARC) ArcGIS Online · layer · polygon
Not loaded

SOTB Subbays

Houston Advanced Research Center (HARC) ArcGIS Online · layer · polygon

The State of the Bay's sub bay classifications are based on the GBEP segments.

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SOTB TCEQ Stations

Houston Advanced Research Center (HARC) ArcGIS Online · layer · point

TCEQ stations in the State of the Bay study area.

Not loaded

SOTB TDSHS Stations

Houston Advanced Research Center (HARC) ArcGIS Online · layer · point

TDSHS bacteria sampling stations in the State of the Bay study area.

Houston Advanced Research Center (HARC) ArcGIS Online · layer · polyline

TCEQ segments for streams/linear features and statistics based on 300 meters buffer.

Add a dataset

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.