Find out current and historic rainfall amounts in Harris County
Gauges measuring height and flow on local and state rivers and streams
Note that while most (though not all) of our bayous and streams flow into Buffalo Bayou, they are all in the larger San Jacinto River Basin watershed. (These do not include the Brazos, Colorado or Trinity rivers, of course.) On this site, at the bottom of the page for a particular gauge, you can set up alerts to receive notices of how high the water is flowing.
Water Resources Links for the Buffalo Bayou-San Jacinto River Watershed. From the US Geological Survey
US Geological Survey Interactive Watershed Map
See also Watershed Maps
Real-time Data for Addicks and Barker reservoirs and dams on Buffalo Bayou
Flood Zone Maps
Find your flood zone where you live.
Texas Coastal Atlas
An interactive map showing transportation, drainage patterns, ecoregions, wetlands, green space, and more. From the Center for Texas Beaches and Shores, Texas A&M, Galveston
Galveston Bay Watershed and Wetland Permit Planning Tool
Wetlands Mapping Tool, Houston Advanced Research Center (HARC)
Searchable real estate database of flood risk from the Center for Texas Beaches and Shores, Texas A&M, Galveston
Sea Level Rise
Temperature, Precipitation, Drought: National Oceanic and Atmospheric (NOAA) Climate at a Glance