Business Analyst Rezarta Hoxhallari Layers
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)
Business Analyst Rezarta Hoxhallari Layers
Business Analyst Rezarta Hoxhallari Layers
RG_Stadium_FIFA_Games
Hub keywords: DIR;Landbase and Roads;Mowing
RMD NOAA CCAP Land Cover summary stats table.
RMD NOAA CCAP Land Cover summary stats table.
RMD Commercial Harvest table.
RMD Commercial Landings table.
Counties within the RMD study area.
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.
RMD NOAA CCAP Land Cover and USGS NLCD Imperviousness stats table.
RMD USGS NLCD Imperviousness stats table.
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…
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.
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.
RMD TWDB Galveston Inflow Monthly
Estimated total freshwater inflows to the Trinity-San Jacinto Estuary (Galveston Bay) in acre-feet by and year.
The water level of groundwater wells measured as depth of water in feet below land surface.
Groundwater well water quality sampling values for analyzed constituents including parameters identified as priority contaminants and associated health threat levels.
Geographic locations of groundwater wells along with well attributes including aquifer information, total well depth, and well use.
Groundwater wells along with water quality and water level information.
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…
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.
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.
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.
Spatially referenced biogeographic accounts of nonindigenous or invasive aquatic species observations.
RMD watersheds. It combines updated GBEP and four HUC 10 watersheds.
RMD watersheds and subbays. It combines updated GBEP, four HUC 10 watersheds, and GBEP subbays.
RMD combined water quality datasets.
RMD water quality Tissue datasets.
Harris County Road Log for cataloging managed and unmanaged road segments.
Harris County Road Log for cataloging managed and unmanaged road segments.
Harris County Road Log for cataloging managed and unmanaged road segments.
Harris County Road Log for cataloging managed and unmanaged road segments.
Harris County Road Log for cataloging managed and unmanaged road segments.
Harris County Road Log for cataloging managed and unmanaged road segments.
City of Houston's Major Thoroughfare & Freeway Plan for 2022.
Right-of-ways for drainage related property distributed by Harris County Flood Control District
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.