Transect of 20 radar stream gauges on I-10 Radar measures water - - PowerPoint PPT Presentation

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Jun 16, 2023 175 likes •256 views

Transect of 20 radar stream gauges on I-10 Radar measures water level and surface velocity Gauges installed on TxDOT bridges Project sponsored by TxDOT Site 105: Hillebrandt Bayou in Beaumont Gauge is in the coastal zone Normally measures

SLIDE 1

Transect of 20 radar stream gauges on I-10

Radar measures water level and surface velocity

Gauges installed on TxDOT bridges Project sponsored by TxDOT

SLIDE 2

Site 105: Hillebrandt Bayou in Beaumont

Coastal zone

Beaumont I-10 I-10

Gauge is in the coastal zone

Normally measures standing water at sea level

Gulf of Mexico

SLIDE 3

Sensor, LIDAR DEM, and LIDAR Point Cloud on Bridge

Used to characterize elevation profiles at site

LIDAR DEM Bridge Point Cloud Sensor

SLIDE 4

Stream Cross-Section and Road Profile

Developed from LIDAR and sonar measurement

‐10 ‐5 5 10 15 20 50 100 150 200 250 300 350 Elevation Above Geodetic Datum (ft) Distance (ft)

Normal Conditions at Site 105: Hillebrandt Bayou at TX‐124

Sensor Road Low Chord Stream Bed Sea Level

Standing water at sea level

SLIDE 5

Radar Streamflow Measurement during TS Imelda

Gauge simultaneously measures water level and surface velocity, then computes discharge

1000 2000 3000 4000 5000 6000 5 10 15 20 25 18-Sep-19 19-Sep-19 20-Sep-19 21-Sep-19 22-Sep-19 Discharge (cfs) Water Level (ft), Velocity (ft/s) Water Level Velocity Discharge

SLIDE 6

EarthViews 360°Imagery at Hillebrandt Bayou

Virtual Staff Gauge

Radar Sensor https://arcgis.earthviews.com/public/105-hillerbrandt-bayou#22

SLIDE 7

Water Level on Virtual Staff Gauge

5 10 15 20 18-Sep-19 19-Sep-19 20-Sep-19 21-Sep-19 22-Sep-19 Water Level (ft)

Tropical Storm Imelda at Hillebrandt Bayou

Peak water level 19.7 feet above stream bed