Flood Operation Summary
October 2018

Event Details

River Basins Affected: Rio Grande, Red, San Antonio, Guadalupe, Colorado, Brazos and Trinity

Number of USGS Crews Deployed: 20

As of October 16, 38 USGS streamgages are over National Weather Service flood levels, and water continues to rise at 172 gages throughout Texas. USGS real-time maps of flood and high flow conditions may be accessed using the USGS Texas Water Dashboard.

Twenty USGS field crews are measuring floodwaters and verifying streamgage operations on the Rio Grande, Red, San Antonio, Guadalupe, Colorado, Brazos and Trinity River Basins. Crews will be flagging high-water marks on the Llano River, west of Austin, as it nears record flooding.

Static image of the Texas Water Dashboard, October 18. Click on the image to go to the interactive map. Circles outlined in bright pink indicate USGS gages above NWS flood stage.

Sites in the table below are USGS gaging stations currently above National Weather Service flood stage. Data are provisional and subject to revision.

Station NWS Flood Stage Current Stage Measured Rising / Falling
Loading Data...

Week of October 8, 2018

Click on a photo for a larger version. Any of the photos on this page may be used with credit to USGS Texas Water Science Center.

USGS scientists Scott Grzyb and Michael Scheider pause at sunset at the end of a long day collecting high-water measurements along the Llano River on October 8, 2018.

USGS scientist Scott Grzyb reviews high-water data collected by boat on the Llano River in Llano, Texas in response to a flash flood on October 8, 2018.

Llano River at Llano, Tex., during a flash-flood event on October 8, 2018.

Week of October 15, 2018

Llano River at Llano, Tex.

Llano River at Llano, Tex.

Llano River at Llano, Tex.

USGS scientists preparing to use a drone to capture flood imagery. This imagery is being tested as a new way to estimate streamflow.

Drone footage of the Llano River. This imagery is being tested as a new way to estimate streamflow.

USGS scientists launching a drone to capture flood imagery.